The Open Dentistry Journal




ISSN: 1874-2106 ― Volume 13, 2019

Dietary Strategies to Optimize Wound Healing after Periodontal and Dental Implant Surgery: An Evidence-Based Review



Beatrice Y Lau1, Bryan D Johnston1, Peter C Fritz2, Wendy E Ward1, *
1 Center for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, St. Catharines, Ontario, Canada
2 Reconstructive Periodontics and Implant Surgery Clinic, Fonthill, Ontario, Canada; Staff Periodontist, Niagara Health System; and Center for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, St. Catharines, Ontario, Canada

Abstract

Methods to optimize healing through dietary strategies present an attractive option for patients, such that healing from delicate oral surgeries occurs as optimally as possible with minimal patient-meditated complications through improper food choices. This review discusses findings from studies that have investigated the role of diet, either whole foods or individual dietary components, on periodontal health and their potential role in wound healing after periodontal surgery. To date, research in this area has largely focused on foods or individual dietary components that may attenuate inflammation or oxidant stress, or foster de novo bone formation. These studies suggest that a wide variety of dietary components, including macronutrients and micronutrients, are integral for optimal periodontal health and have the potential to accelerate oral wound healing after periodontal procedures. Moreover, this review provides guidance regarding dietary considerations that may help a patient achieve the best possible outcome after a periodontal procedure.

Keywords: Anti-inflammation, anti-oxidants, dietary strategies, implant surgery, minerals, oral wound healing, periodontal surgery, vitamins.


Article Information


Identifiers and Pagination:

Year: 2013
Volume: 7
First Page: 36
Last Page: 46
Publisher Id: TODENTJ-7-36
DOI: 10.2174/1874210601307010036

Article History:

Received Date: 03/1/2013
Revision Received Date: 14/2/2013
Acceptance Date: 22/2/2013
Electronic publication date: 5 /4/2013
Collection year: 2013

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© Lau et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.


* Address correspondence to this author at the Center for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, 500 Glenridge Ave. St. Catharines, Ontario, L2S 3A1, Canada; Tel: 905 688 5550 X3024; Fax: 905 688 6840; E-mail: wward@brocku.ca





INTRODUCTION

Periodontal and dental implant surgeries typically involve invasive techniques with possible post-operative complications that may delay healing times and subsequently negatively affect a successful clinical outcome. The duration of the surgical procedure, the patient’s physical anatomy, health condition, and smoking status, as well as the clinician’s skill, will in turn affect the rates of healing of the surrounding periodontal and bone tissues. However, often overlooked is the patient’s role in healing during the post-operative period, as mastication carries inherent risks not typical for surgeries in other parts of the body and patients often adopt a restricted soft diet with limited nutrition.

Methods to optimize healing through dietary strategies present an attractive option for patients, such that healing from delicate oral surgeries occurs as optimally as possible with minimal patient-meditated complications through improper food choices. Although the application of growth factor-containing agents in osseous grafts and collagen gels is a common method for periodontal wound healing [1Raja S, Byakod G, Pudakalkatti P. Growth factors in periodontal regeneration Int J Dent Hyg 2009; 7(2 ): 82-9.], specialized dietary strategies pre- and post-surgery may provide an ideal approach to optimizing healing after dental implant and periodontal surgery, particularly since such a healthful diet would benefit overall health as well as oral health. The dietary strategy must also take into account the swelling of the tissues post-surgery as well as extreme temperatures, which may aggravate hypersensitive teeth or promote edema and hemorrhage. The consistency of the diet must also restrict trauma to the incisions, and in some cases account for an edentulous situation as with overdenture implant surgery. In order to develop such strategies, it is imperative to review studies to date that have investigated the relationship between dietary components and oral wound healing. Moreover, because of the paucity of data in this area, a review of the evidence regarding dietary components and periodontal health is useful to more fully understand how nutrients – either in foods or as dietary supplements - contribute to overall periodontal health. This review provides an up to date synopsis of these studies and discussion of dietary considerations that may help a patient achieve the best possible outcome after a periodontal procedure.

THE ROLE OF VITAMIN SUPPLEMENTS IN ORAL WOUND HEALING

Few intervention studies have investigated if and how specific dietary components modulate oral wound healing [2Barroso AB, Lima V, Guzzo GC, et al. Efficacy and safety of combined piroxicam, dexamethasone, orphenadrine, and cyanocobalamin treatment in mandibular molar surgery Braz J Med Biol Res 2006; 39(9 ): 1241-7.-5Bashutski JD, Eber RM, Kinney JS, et al. The impact of vitamin D status on periodontal surgery outcomes J Dent Res 2011; 90(8 ): 1007-2.] (Table 1). One study showed that vitamin B12 supplementation resulted in lower pain scores at 6 and 120 hours post-extraction with no effect on facial swelling [2Barroso AB, Lima V, Guzzo GC, et al. Efficacy and safety of combined piroxicam, dexamethasone, orphenadrine, and cyanocobalamin treatment in mandibular molar surgery Braz J Med Biol Res 2006; 39(9 ): 1241-7.]. Among patients undergoing surgical removal of an oral tumor, a selenium supplement was associated with a reduction in associated-lymphedema [3Zimmermann T, Leonhardt H, Kersting S, et al. Reduction of postoperative lymphedema after oral tumor surgery with sodium selenite Biol Trace Elem Res 2005; 106(3 ): 193-203.]. As expected with lymphedema, there was a positive correlation between extent of lymphedema and reactive oxygen species (ROS) concentration. Moreover, there was an inverse correlation between lymphedema severity and circulating selenium concentration and glutathione peroxidase activity. This suggests that selenium may have attenuated lymphedema via an antioxidant mechanism such as elevated glutathione peroxidase activity. In patients with generalized moderate to severe chronic periodontitis who had undergone access flap surgery, a vitamin B complex given daily for 30 days post-operation led to greater clinical attachment levels than a placebo, although there was no effect on gingival index, plaque index and bleeding on probing [4Neiva RF, Al-Shammari K, Nociti FH Jr, Soehren S, Wang HL. Effects of vitamin-B complex supplementation on periodontal wound healing J Periodontol 2005; 76(7 ): 1084-91.]. Another study showed that vitamin D status – determined by measurement of serum 25(OH)D – was associated with better post-operative surgical outcome. Among patients with severe chronic periodontitis, vitamin D sufficiency (serum 25(OH)D of >20 ng/mL) before periodontal surgery was associated with improved clinical attachment levels and reduced probing depth for up to 12 months after surgery [5Bashutski JD, Eber RM, Kinney JS, et al. The impact of vitamin D status on periodontal surgery outcomes J Dent Res 2011; 90(8 ): 1007-2.]. In contrast, patients who were vitamin D deficient (serum 25(OH)D of <20 ng/mL), prior to periodontal surgery did not experience clinical benefits with the 6 week supplementation of vitamin D (800 IU) and calcium (1000 mg). However, as noted by the authors, a longer supplementation period, i.e. 3 months or more, is required to observe elevations in serum 25(OH)D [6Vieth R, Chan PC, MacFarlane GD. Efficacy and safety of vitamin D3 intake exceeding the lowest observed adverse effect level Am J Clin Nutr 2001; 73(2 ): 288-94.]. A subset of patients who were vitamin D sufficient and taking teriparatide (parathyroid hormone), experienced more bone gain from 6 to 12 months after surgery. This would be expected given the anabolic nature of teriparatide. While mechanisms were not identified, vitamin D is known to have immunomodulatory functions in addition to its well-established role in regulation of calcium metabolism. These studies provide some evidence to suggest that certain minerals and vitamins improve post-surgical outcomes. Exact mechanisms are not known, but it can be speculated based on potential antioxidant properties of selenium while the B vitamins are integral to saturated fatty acid. energy metabolism and thus may facilitate healing through these activities. Vitamin D has favorable effects by having direct positive effects on bone metabolism as well as immunomodulatory activity. As discussed later in this review, higher serum 25(OH)D levels are associated with less periodontal attachment loss [5Bashutski JD, Eber RM, Kinney JS, et al. The impact of vitamin D status on periodontal surgery outcomes J Dent Res 2011; 90(8 ): 1007-2., 7Miley DD, Garcia MN, Hildebolt CF, et al. Cross-sectional study of vitamin D and calcium supplementation effects on chronic periodontitis J Periodontol 2009; 80(9 ): 1433-9.-9Dietrich T, Joshipura KJ, Dawson-Hughes B, Bischoff-Ferrari HA. Association between serum concentrations of 25-hydroxyvitamin D3 and periodontal disease in the US population Am J Clin Nutr 2004; 80(1 ): 108-3.] and these studies suggest an immunomodulatory role for vitamin D.

Table 1

Studies Investigating the Effects of Dietary Components on Post-Operative Outcomes in Adults




ASSOCIATIONS BETWEEN PERIODONTAL HEALTH AND DIETARY COMPONENTS WITH ANTI-INFLAMMATORY, OSTEOGENIC OR ANTIOXIDANT ACTIVITY

Because of the paucity of intervention studies examining diet and healing after an oral surgical procedure, a review of studies that examined the association between dietary components and periodontal health in adults, both healthy participants and those with varying degrees of periodontitis, is useful to more fully understand the role of diet in periodontal health (Table 2). In Table 2, these studies are grouped by category – macronutrients or micronutrients - and within these categories, by their potential biological effect such as anti-inflammatory activity, osteogenic activity or antioxidant activity.

Table 2

Studies Relating Dietary Components and Periodontal Health in Adults




A prospective, randomized study was conducted with 148 families to determine whether educating the parents to adopt anti-atherogenic diets would influence any health outcomes including periodontal status [10Karjalainen S, Sewon L, Soderling E, et al. Oral health of 3-year-old children and their parents after 29 months of child-focused antiatherosclerotic dietary intervention in a prospective randomized trial Caries Res 1997; 31(3 ): 180-5.]. After 29 months, there were no differences in periodontal health of parents who consumed diets with a high ratio of polyunsaturated fatty acid (PUFA) to saturated fat acid (SFA), suggesting that fat quality has no effect on the adult periodontium. However, a recent prospective study in older individuals, i.e. 75 years of age and older, suggests that a diet high in SFA may increase the risk of periodontal disease in non-smokers [11Iwasaki M, Manz MC, Moynihan P, et al. Relationship between Saturated Fatty Acids and Periodontal Disease J Dent Res 2011; 90(7 ): 861-7.]. It is suspected that a diet high in SFA produces a pro-inflammatory environment that enables the initiation and progression of periodontal disease. In contrast, although smoking is a well-established risk factor for developing periodontal disease, there was no relationship between SFA intake and periodontal disease among smokers. It is possible that a relationship was masked because the negative effects of smoking to periodontium may dominate and mask the proinflammatory effects of SFA.

A clinical trial showed positive effects of borage oil [12Rosenstein ED, Kushner LJ, Kramer N, Kazandjian G. Pilot study of dietary fatty acid supplementation in the treatment of adult periodontitis Prostaglandins Leukot Essent Fatty Acids 2003; 68(3 ): 213-8.], a rich source of gamma linolenic acid (GLA). The known anti-inflammatory properties of GLA led to the postulation that they may attenuate inflammation in many different disease states [13Chapkin RS, Kim W, Lupton JR, McMurray DN. Dietary docosahexaenoic and eicosapentaenoic acid: emerging mediators of inflammation Prostaglandins Leukot Essent Fatty Acids 2009; 81(2-3 ): 187-91.]. Among patients with periodontitis, significant improvements from baseline were observed with three grams of borage oil supplementation but not with three grams of fish oil per day [12Rosenstein ED, Kushner LJ, Kramer N, Kazandjian G. Pilot study of dietary fatty acid supplementation in the treatment of adult periodontitis Prostaglandins Leukot Essent Fatty Acids 2003; 68(3 ): 213-8.]. Further study is needed to understand how the type and ratio of specific fatty acids impacts periodontal health. Dose-response studies with specific fatty acids are also warranted, particularly as data from the National Health and Nutritional Examination Survey (NHANES), suggests that diets that are higher in docosahexaenoic acid (DHA), a n-3 PUFA, are associated with decreased odds of periodontal disease [14Naqvi AZ, Buettner C, Phillips RS, Davis RB, Mukamal KJ. n-3 fatty acids and periodontitis in US adults J Am Diet Assoc 2010; 110(11 ): 1669-75.]. This association has recently been substantiated by a prospective study in which the incidence of periodontal disease was 1.5 times greater in those with the lowest DHA intake compared to those with the highest DHA intake [15Iwasaki M, Yoshihara A, Moynihan P, et al. Longitudinal relationship between dietary ω-3 fatty acids and periodontal disease Nutrition source journal 2010; 26(11-12 ): 1105-9.]. At present, the association between DHA intake and periodontal disease is best explained by the known anti-inflammatory effect of omega-3 fatty acids. Also, a prospective study in older adults has identified that a diet containing a higher ratio of n-6 to n-3 PUFAs was associated with significantly more periodontal disease events [16Iwasaki M, Taylor GW, Moynihan P, et al. Dietary ratio of n-6 to n-3 polyunsaturated fatty acids and periodontal disease in community-based older Japanese: a 3-year follow-up study Prostaglandins Leukot Essent Fatty Acids 2011; 85(2 ): 107-2.]. Thus, findings to date suggest that type of dietary fat may modulate periodontal health and further investigation is warranted.

Dietary carbohydrates may also modulate periodontal health. Results from a single crossover study demonstrated that a high sugar diet contributed to higher bleeding scores as compared to a low sugar diet in young adults with no differences in plaque score [17Sidi AD, Ashley FP. Influence of frequent sugar intakes on experimental gingivitis J Periodontol 1984; 55(7 ): 419-23.]. In the Health Professionals Follow Up Study, 34,160 participants aged 40-75 years were followed for 12 years and participants with the highest quintile of whole grain intake were 23% less likely to get periodontitis than those with the lowest quintile [18Merchant AT, Pitiphat W, Franz M, Joshipura KJ. Whole-grain and fiber intakes and periodontitis risk in men Am J Clin Nutr 2006; 83(6 ): 1395-400.]. This suggests that fibre may be associated with the initiation of the disease, at least in this population group of middle aged and older adults. These findings suggest that a diet low in sugar and high in fibre may be helpful in moderating inflammation in the periodontium [18Merchant AT, Pitiphat W, Franz M, Joshipura KJ. Whole-grain and fiber intakes and periodontitis risk in men Am J Clin Nutr 2006; 83(6 ): 1395-400.].

In contrast to macronutrients, more studies have investigated the role of micronutrients, particularly calcium and vitamin D in periodontal health [7Miley DD, Garcia MN, Hildebolt CF, et al. Cross-sectional study of vitamin D and calcium supplementation effects on chronic periodontitis J Periodontol 2009; 80(9 ): 1433-9.-9Dietrich T, Joshipura KJ, Dawson-Hughes B, Bischoff-Ferrari HA. Association between serum concentrations of 25-hydroxyvitamin D3 and periodontal disease in the US population Am J Clin Nutr 2004; 80(1 ): 108-3., 19Krall EA, Garcia RI, Dawson-Hughes B. Increased risk of tooth loss is related to bone loss at the whole body, hip, and spine Calcif Tissue Int 1996; 59(6 ): 433-7.-24Dietrich T, Nunn M, Dawson-Hughes B, Bischoff-Ferrari HA. Association between serum concentrations of 25-hydroxyvitamin D and gingival inflammation Am J Clin Nutr 2005; 82(3 ): 575-80.]. This is likely because supplementation with calcium and vitamin D is common among older individuals, and has proven beneficial for overall bone health including maintenance of bone mineral density and protection against fragility fractures. Because the periodontium presents unique structural and functional features apart from bone it is important to explore if and how calcium and vitamin D affect the periodontal state in an age group that is more vulnerable to periodontitis.

In a group of healthy, dentate, postmenopausal female nonsmokers with normal bone mineral density (BMD), a daily supplementation of 500 mg of calcium provided as calcium citrate malate or calcium carbonate taken for two years lowered the risk of tooth loss as compared to the non-smoking placebo group [19Krall EA, Garcia RI, Dawson-Hughes B. Increased risk of tooth loss is related to bone loss at the whole body, hip, and spine Calcif Tissue Int 1996; 59(6 ): 433-7.]. Of note is the fact that half of the participants enrolled in this study had dietary calcium intakes of less than 400 mg/day, and thus had intakes that were substantially lower than the daily recommendation of 1200 mg/day for adults over 50 years of age. The study also demonstrated a relationship between tooth retention and loss of BMD at multiple skeletal sites (spine, hip, wrist) [19Krall EA, Garcia RI, Dawson-Hughes B. Increased risk of tooth loss is related to bone loss at the whole body, hip, and spine Calcif Tissue Int 1996; 59(6 ): 433-7.]. Individuals who lost one or more teeth during the seven year follow up period also experienced a greater reduction of BMD at whole body, femoral neck, and spine sites [19Krall EA, Garcia RI, Dawson-Hughes B. Increased risk of tooth loss is related to bone loss at the whole body, hip, and spine Calcif Tissue Int 1996; 59(6 ): 433-7.]. Conversely, for each percent per year decrement in BMD, a higher relative risk of tooth loss was observed [19Krall EA, Garcia RI, Dawson-Hughes B. Increased risk of tooth loss is related to bone loss at the whole body, hip, and spine Calcif Tissue Int 1996; 59(6 ): 433-7.]. As tooth loss is dependent on alveolar bone integrity, it is likely that the deterioration of alveolar bone in age-related bone loss is coupled with the overall decrease in BMD, leading to poor tooth retention. Calcium supplementation may help maintain alveolar bone health and thus tooth retention; this may be especially important to those who have a low calcium intake, below recommended levels.

While dietary calcium may slow alveolar bone loss in healthy aging subjects, a randomized clinical trial had reported that in patients with advanced periodontitis, there were no differences in probing depth, gingival inflammation, and plaque levels between those who were administered 1 g calcium tablets daily for 180 days or those who had taken placebo tablets for the same duration [20Uhrbom E, Jacobson L. Calcium and periodontitis: clinical effect of calcium medication J Clin Periodontol 1984; 11(4 ): 230-41.]. Because the recommended intake for calcium was 800 mg/day when the study was conducted, the authors classified participants as having intakes above or below 800 mg calcium/day, and evenly randomized participants with these different intakes among the treatment and placebo group. Comparing the participants in the test group with different intakes yielded no significant differences. In contrast, those in the placebo group with a calcium intake greater than 800 mg calcium/day had a lower probing depth as well as a higher gingival index than those with an intake lower than 800 mg calcium/day. The conflicting results might arise from the fact that the intakes of most participants were around 800 mg calcium/day, limiting the difference in characteristics between the two groups. Since the etiology of periodontal disease involves heightened inflammatory processes, it is possible that supplemental calcium may not be directly involved in the attenuation of inflammation. Since tooth retention was not assessed in this study, the possible benefit of supplemental calcium in preserving alveolar bone density was not tested.

Another study also suggests that low calcium intake may be detrimental to periodontal health. Data from cross-sectional studies from the NHANES III showed that a lower calcium intake was associated with periodontal disease, as determined by clinical attachment loss, for young males and females (20-39 y) and older males (40-59 y) [21Nishida M, Grossi SG, Dunford RG, et al. Calcium and the risk for periodontal disease J Periodontol 2000; 71(7 ): 1057-66.]. The association with periodontal disease risk was dose-dependent in females. Females who had daily calcium intakes of less than 500 mg had a 54% greater risk of periodontal disease than those who took more than 800 mg. Females who consumed 500 to 799 mg of calcium daily had a 27% greater risk [21Nishida M, Grossi SG, Dunford RG, et al. Calcium and the risk for periodontal disease J Periodontol 2000; 71(7 ): 1057-66.]. It is known that calcium intakes are often substantially lower than recommended levels, and a recent cross-sectional study conducted on patients with periodontitis confirmed this finding [22Dixon D, Hildebolt CF, Miley DD, et al. Calcium and vitamin D use among adults in periodontal disease maintenance programmes Br Dent J 2009; 206(12 ): 627-31.]. Only 7% of the participants, with an average age of 64 years, consumed calcium and vitamin D at the recommended levels [22Dixon D, Hildebolt CF, Miley DD, et al. Calcium and vitamin D use among adults in periodontal disease maintenance programmes Br Dent J 2009; 206(12 ): 627-31.].

Studies investigating the combined effects of calcium and vitamin D supplementation have, in general, not shown a significant relationship with promotion of periodontal health [7Miley DD, Garcia MN, Hildebolt CF, et al. Cross-sectional study of vitamin D and calcium supplementation effects on chronic periodontitis J Periodontol 2009; 80(9 ): 1433-9., 8Krall EA, Wehler C, Garcia RI, Harris SS, Dawson-Hughes B. Calcium and vitamin D supplements reduce tooth loss in the elderly Am J Med 2001; 111(6 ): 452-6., 19Krall EA, Garcia RI, Dawson-Hughes B. Increased risk of tooth loss is related to bone loss at the whole body, hip, and spine Calcif Tissue Int 1996; 59(6 ): 433-7.]. However, dairy intake is associated with a significantly lower prevalence of periodontitis for individuals in the highest quintile of dairy intake than those in the lowest quintile [23Al-Zahrani MS. Increased intake of dairy products is related to lower periodontitis prevalence J Periodontol 2006; 77(2 ): 289-94.]. In patients with at least 3 mm of clinical attachment loss, there were no significant differences in probing depths, number of bleeding sites, gingival index values, number of furcation involvements, attachment loss, and alveolar crest height loss among subjects taking more than 1000 mg of calcium and 400 IU of vitamin D daily [7Miley DD, Garcia MN, Hildebolt CF, et al. Cross-sectional study of vitamin D and calcium supplementation effects on chronic periodontitis J Periodontol 2009; 80(9 ): 1433-9.]. However, trends for improvements in these outcomes were noted and suggest that further study is warranted. No significant differences in probing depths were found in healthy subjects over 65 years of age who took a daily supplement of 500 mg of calcium and 700 IU of vitamin D for three years, although the odds of tooth loss were associated with supplement status [8Krall EA, Wehler C, Garcia RI, Harris SS, Dawson-Hughes B. Calcium and vitamin D supplements reduce tooth loss in the elderly Am J Med 2001; 111(6 ): 452-6.].

One study reports no effect of providing calcium and vitamin D supplements on tooth loss [19Krall EA, Garcia RI, Dawson-Hughes B. Increased risk of tooth loss is related to bone loss at the whole body, hip, and spine Calcif Tissue Int 1996; 59(6 ): 433-7.]. In this study, healthy postmenopausal women received either 400 IU of vitamin D or a placebo daily for a year, and 700 IU of vitamin D or 100 IU of vitamin D daily for two years [19Krall EA, Garcia RI, Dawson-Hughes B. Increased risk of tooth loss is related to bone loss at the whole body, hip, and spine Calcif Tissue Int 1996; 59(6 ): 433-7.]. Subjects, half of whom had a daily intake of calcium less than 400 mg and half had a daily intake between 400-650 mg, were given 377 mg and 500 mg of calcium supplements respectively [19Krall EA, Garcia RI, Dawson-Hughes B. Increased risk of tooth loss is related to bone loss at the whole body, hip, and spine Calcif Tissue Int 1996; 59(6 ): 433-7.]. The fact that an inclusion criterion was a normal spine BMD may explain why tooth retention was not altered with supplementation.

Two cross-sectional studies from the NHANES III data showed a relationship between vitamin D and periodontal health. In 3781 adults over 50 years of age, there was an inverse relationship between attachment loss and serum 25(OH)D [9Dietrich T, Joshipura KJ, Dawson-Hughes B, Bischoff-Ferrari HA. Association between serum concentrations of 25-hydroxyvitamin D3 and periodontal disease in the US population Am J Clin Nutr 2004; 80(1 ): 108-3.]. In this study, the dietary calcium intake for both males and females were lower in the participants over age 50 than those from 20 to 49 years of age, and the average intakes for the four groups were below the recommended 1000-1200 mg/day [9Dietrich T, Joshipura KJ, Dawson-Hughes B, Bischoff-Ferrari HA. Association between serum concentrations of 25-hydroxyvitamin D3 and periodontal disease in the US population Am J Clin Nutr 2004; 80(1 ): 108-3.]; the lower intake of calcium may have lessened the effect of vitamin D. Similarly, it was shown that of 6700 never-smokers with the highest quintile of serum 25(OH)D (average serum concentration of 106 nmol 25(OH)D/L), were 20% less likely to bleed on probing than those in the lowest quintile with an average serum concentration of 31 nmol 25(OH)D/L [24Dietrich T, Nunn M, Dawson-Hughes B, Bischoff-Ferrari HA. Association between serum concentrations of 25-hydroxyvitamin D and gingival inflammation Am J Clin Nutr 2005; 82(3 ): 575-80.]. Although these studies do not directly link supplementation with vitamin D to periodontal status, taking dietary supplements is a viable method to increase serum levels of vitamin D in a population that has calcium and vitamin D intakes below the recommendation.

Studies that focused on other minerals are very limited. Inverse relationships between serum magnesium and probing depth and attachment loss were reported in a cross-sectional study that included 2931 adults [25Meisel P, Schwahn C, Luedemann J, et al. Magnesium deficiency is associated with periodontal disease J Dent Res 2005; 84(10 ): 937-41.]. In adults with generalized gingival inflammation, supplementing water with fluoride and other trace minerals yielded no differences in gingival inflammation compared with de-ionized water [26Rogo E, Hodges K, Herzog A. Dentinal sensitivity: a natural mineral dietary supplement study Int J Dent Hyg 2006; 4(3 ): 122-8.].

In a prospective study, older individuals (75 years of age and older) in the lowest tertile of serum vitamin E (α-tocopherol) were associated with more periodontal disease, while those in the middle and highest tertiles of vitamin E intake were associated with lower periodontal disease [27Iwasaki M, Manz MC, Taylor GW, Yoshihara A, Miyazaki H. Relations of serum ascorbic acid and alpha-tocopherol to periodontal disease J Dent Res 2012; 91(2 ): 167-72.]. Moreover, individuals with the highest intakes of fruits and vegetables had a lower number of teeth with periodontal disease progression [28Iwasaki M, Moynihan P, Manz MC, et al. Dietary antioxidants and periodontal disease in community-based older Japanese: a 2-year follow-up study Public Health Nutr 2013; 16(2 ): 330-8.]. Although supplement use was not measured in this study, it is interesting that a relationship between higher dietary vitamin E intake and lower periodontal disease was observed when examining dietary levels alone. Another study showed that individuals taking vitamin E (50 mg vitamin D/day) or acetylsalicylic acid (ASA, 100-3200 mg/day) had enhanced gingival bleeding compared to individuals taking neither vitamin E or ASA alone if they had dental plaque on 40% of measured surfaces [29Liede KE, Haukka JK, Saxen LM, Heinonen OP. Increased tendency towards gingival bleeding caused by joint effect of alpha-tocopherol supplementation and acetylsalicylic acid Ann Med 1998; 30(6 ): 542-6.]. Not surprisingly, a higher amount of dental plaque was associated with greater gingival bleeding and the enhanced bleeding with the combination of vitamin E and ASA was observed in individuals with greater but not less dental plaque [29Liede KE, Haukka JK, Saxen LM, Heinonen OP. Increased tendency towards gingival bleeding caused by joint effect of alpha-tocopherol supplementation and acetylsalicylic acid Ann Med 1998; 30(6 ): 542-6.]. The authors of the study attributed the outcome to an enhanced inhibition of blood clotting by vitamin E [29Liede KE, Haukka JK, Saxen LM, Heinonen OP. Increased tendency towards gingival bleeding caused by joint effect of alpha-tocopherol supplementation and acetylsalicylic acid Ann Med 1998; 30(6 ): 542-6.]. Further understanding of how vitamin E supplements modulate blood clot formation – one of the first steps in healing – is needed.

Low intakes of vitamin C [30Nishida M, Grossi SG, Dunford RG, et al. Dietary vitamin C and the risk for periodontal disease J Periodontol 2000; 71(8 ): 1215-23.] and low serum vitamin C [27Iwasaki M, Manz MC, Taylor GW, Yoshihara A, Miyazaki H. Relations of serum ascorbic acid and alpha-tocopherol to periodontal disease J Dent Res 2012; 91(2 ): 167-72., 31Amarasena N, Ogawa H, Yoshihara A, Hanada N, Miyazaki H. Serum vitamin C-periodontal relationship in community-dwelling elderly Japanese J Clin Periodontol 2005; 32(1 ): 93-7.] are associated with greater clinical attachment loss in adults. Moreover, a high intake of vitamin C, at a level that meets or is in excess of the current dietary recommended intakes for vitamin C in North America, is associated with a decrease in periodontal disease progression [28Iwasaki M, Moynihan P, Manz MC, et al. Dietary antioxidants and periodontal disease in community-based older Japanese: a 2-year follow-up study Public Health Nutr 2013; 16(2 ): 330-8.]. A dose-response relationship between the risk of clinical attachment loss and dietary vitamin C has been demonstrated. Subjects with a low intake of vitamin C (<29 mg/day) were 1.3 times more likely to have clinical attachment loss than those with more than 180 mg of vitamin C [30Nishida M, Grossi SG, Dunford RG, et al. Dietary vitamin C and the risk for periodontal disease J Periodontol 2000; 71(8 ): 1215-23.]. Current and former smokers were especially placed at a greater risk [30Nishida M, Grossi SG, Dunford RG, et al. Dietary vitamin C and the risk for periodontal disease J Periodontol 2000; 71(8 ): 1215-23.]. Although low levels of vitamin C intake may be indicative of poorer periodontal health, intake ceases to be influential if the individual is consuming vitamin C at recommended levels: 90 mg/d for men and 75 mg/d for women. For example, subjects who consumed vitamin C at recommended levels did not have improved outcomes (probing depth, clinical attachment levels, gingival inflammation, plaque level) after receiving 1000 mg of ascorbic acid for six months [32Woolfe SN, Kenney EB, Hume WR, Carranza FA Jr. Relationship of ascorbic acid levels of blood and gingival tissue with response to periodontal therapy J Clin Periodontol 1984; 11(3 ): 159-65.]. Another study showed that after chewing sugar free gum, each piece containing 60 mg of vitamin C, five times daily for three months, participants had lower bleeding scores than non-gum chewers, while sugar free gum without vitamin C had no effect [33Lingstrom P, Fure S, Dinitzen B, et al. The release of vitamin C from chewing gum and its effects on supragingival calculus formation Eur J Oral Sci 2005; 113(1 ): 20-7.]. Another study examined if grapefruit, a rich source of vitamin C, modulated chronic periodontitis. Patients with chronic periodontitis who consumed two grapefruits daily for two weeks had a lower sulcus bleeding index than those who did not, although there were no differences in probing depth and plaque index [34Staudte H, Sigusch BW, Glockmann E. Grapefruit consumption improves vitamin C status in periodontitis patients Br Dent J 2005; 199(4 ): 213-7.]. Although it may be difficult to sustain a grapefruit eating habit for a prolonged period of time, eating a variety of fruits and vegetables that are rich in vitamins offers an alternative to supplementation. The negative impact of having low levels of vitamin C is especially important to smokers and those who are undernourished. It is important to note that in addition to being a rich source of vitamin C, grapefruit is also a source of flavonoids and other bioactives that may have a role in promoting periodontal health.

A few studies have reported the effects of other dietary components or foods with potential antioxidant activity such as β-carotene, lycopene, and green tea and its extract [28Iwasaki M, Moynihan P, Manz MC, et al. Dietary antioxidants and periodontal disease in community-based older Japanese: a 2-year follow-up study Public Health Nutr 2013; 16(2 ): 330-8., 35Chandra RV, Prabhuji ML, Roopa DA, Ravirajan S, Kishore HC. Efficacy of lycopene in the treatment of gingivitis: a randomised, placebo-controlled clinical trial Oral Health Prev Dent 2007; 5(4 ): 327-6.-37Krahwinkel T, Willershausen B. The effect of sugar-free green tea chew candies on the degree of inflammation of the gingiva Eur J Med Res 2000; 5(11 ): 463-7.]. In a prospective study, those consuming the greatest amounts of β-carotene in their diet were associated with a 27% reduction in the risk of periodontal disease progression [28Iwasaki M, Moynihan P, Manz MC, et al. Dietary antioxidants and periodontal disease in community-based older Japanese: a 2-year follow-up study Public Health Nutr 2013; 16(2 ): 330-8.]. Reductions in bleeding, gingival indices and plaque indices were recorded in healthy patients showing signs of gingivitis after taking 8 mg of lycopene daily for two weeks compared to those who took the placebo [35Chandra RV, Prabhuji ML, Roopa DA, Ravirajan S, Kishore HC. Efficacy of lycopene in the treatment of gingivitis: a randomised, placebo-controlled clinical trial Oral Health Prev Dent 2007; 5(4 ): 327-6.]. Green tea demonstrated similarly positive results [36Kushiyama M, Shimazaki Y, Murakami M, Yamashita Y. Relationship between intake of green tea and periodontal disease J Periodontol 2009; 80(3 ): 372-7., 37Krahwinkel T, Willershausen B. The effect of sugar-free green tea chew candies on the degree of inflammation of the gingiva Eur J Med Res 2000; 5(11 ): 463-7.]. There was an inverse relationship between green tea intake and probing depth, clinical attachment loss, and bleeding on probing. This may have been due to the inhibition of periodontal pathogenic growth and production of virulence factors by green tea polyphenols as shown by in vitro studies [36Kushiyama M, Shimazaki Y, Murakami M, Yamashita Y. Relationship between intake of green tea and periodontal disease J Periodontol 2009; 80(3 ): 372-7.]. Chewing on eight pieces of candy with green tea extract daily resulted in improved sulcus bleeding and proximal plaque indices from week one to week three, while these values worsened for those who received placebo [37Krahwinkel T, Willershausen B. The effect of sugar-free green tea chew candies on the degree of inflammation of the gingiva Eur J Med Res 2000; 5(11 ): 463-7.].

In summary, findings from the studies discussed can be categorized according to their biological activities including anti-inflammatory, osteogenic and antioxidant mechanisms. More specifically, higher intakes of DHA and vitamin D through food sources or supplements, as well as a lower ratio of n-6 to n-3 fatty acids, lower carbohydrate and higher fibre intakes may be beneficial for healing due to anti-inflammatory effects. Meeting dietary requirements for calcium and use of vitamin D supplements may benefit healing through osteogenic activity. The relationship among antioxidant nutrients such as vitamin E and β-carotene and healing are complex and require further investigation while there is strong evidence that lower intakes of vitamin C are harmful to periodontal health. Other foods or food components with antioxidant activity such as green tea and lycopene have shown potential to improve periodontal health.

DIETARY CONSIDERATIONS PRIOR TO AND POST-SURGICAL PROCEDURES

Although studies to date are limited in number and in scope, they suggest that a healthful diet has the potential to accelerate oral wound healing and improve treatment outcome and patient satisfaction. In particular, there is some evidence that a wide variety of dietary components – including macronutrients and micronutrients – are integral for optimal periodontal health as well as healing after periodontal procedures. Prospective studies as well as intervention studies that assess multiple dietary components and overall dietary patterns in relation to wound healing are needed before detailed dietary strategies can be prescribed for patients undergoing complex periodontal procedures. Nonetheless, because of the known role of a balanced diet for overall health it is prudent to consider, prior to surgical procedures, the current nutritional status of a patient, as well as their current food consumption patterns (Table 3). Specific dietary components such as calcium, vitamin D, long chain PUFA are quite often consumed at levels below the recommended intakes; thus emphasizing the importance of increasing intakes in such individuals. It is also important that a patient does not consume individual nutrients in excessive amounts that may cause harm. In North America, the Dietary Reference Intakes (DRIs) are a comprehensive set of reference values for nutrients. These DRIs can assist with the assessment and planning of diets for healthy populations, and are based on gender and life stage. Moreover, the DRIs also provide guidance regarding the highest level of a nutrient that will likely pose no adverse health risk. Consideration of a patient’s current food consumption habits is also warranted prior to a periodontal procedure. Food consumption habits can be extremely difficult for a patient to change, and thus it is important when providing dietary advice that it will be realistic for a patient to actually consume the foods advised. Individualized diet planning may be warranted, particularly for the patient who consumes foods that are not typical of the majority of patients. Ultimately, it is essential to have a realistic perspective regarding whether a patient will be able to adhere to the dietary advice given their food preferences. A helpful way to determine a patient’s potential success in complying with dietary advice pre- and post-surgery may be obtained through use of a written dietary record of foods consumed in advance of the scheduled procedure.

Table 3

Dietary Considerations Prior to Surgical Procedures




Dietary considerations post-surgical procedures are also important to optimize healing (Table 4). Patients should be advised to take a multivitamin during the healing phase, particularly during the early phase of healing, to help ensure a patient is meeting the recommended levels of nutrients. However, it is important to recognize that the DRIs are established for healthy populations without preexisting disease and that higher levels of specific nutrients may be beneficial for healing. As discussed in this review, this is an area that requires further study before specific recommendations can be made. Moreover, there is practical guidance, detailed in Table 4, which can assist patients with dietary choices post-surgery. This practical guidance includes considering the ease of intake of foods, ensuring that the food to be consumed will not damage or aggravate the wound site, as well as the palatability of the foods. Other considerations include the effort involved with preparing the recommended meals. If meals are too complicated and time-consuming to prepare, patients are less likely to be compliant. It is also important to educate the patient that they should return to a regular eating schedule as soon as possible. Because dehydration may impede recovery, it is important to ensure ample fluid intake. While developing an ideal dietary strategy to optimize wound healing is not often included in patient management, this review highlights specific aspects that could be considered to benefit the long-term periodontal health of a patient.

Table 4

Dietary Considerations Post-Surgical Procedures




CONFLICT OF INTEREST

The authors confirm that this article content has no conflicts of interest.

ACKNOWLEDGEMENT

Wendy E. Ward holds a Canada Research Chair in Bone and Muscle Development.

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