The Open Dentistry Journal




ISSN: 1874-2106 ― Volume 14, 2020
RESEARCH ARTICLE

Risk Behaviors for Eating Disorders Among Brazilian Female Adolescents



Alessandro Leite Cavalcanti1, *, Natália Medeiros Andrade1, Lorenna Mendes Temóteo Brandt1, Liege Helena Freitas Fernandes1, Raissa Lima Toscano1, Sheyla Márcia Auad2, Burak Buldur3, Alidianne Fábia Cabral Cavalcanti1
1 School of Dentistry, Paraíba State University, Campina Grande, Brazil.
2 Department of Pediatric Dentistry and Orthodontics, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil.
3 Department of Pediatric Dentistry, Faculty of Dentistry, Sivas Cumhuriyet University, Sivas, Turkey.

Abstract

Background:

Eating disorders are complex conditions that cause serious emotional and physical problems.

Aim:

The aim of the study was to evaluate the behavioral risk for eating disorders in Brazilian female adolescents and their association with dental caries and erosion.

Materials and Methods:

This cross-sectional study included 200 students from public and private schools aged 15-18 years divided into two groups according to behavioral risk: Group 1 - adolescents without risk and Group 2 - adolescents at risk / disorder situation. Sociodemographic information (age and type of school), use of dental services, eating habits, and Body Mass Index (BMI) was obtained. The Bulimic Investigatory Test of Edinburgh (BITE) was used to identify behavioral risk. Caries experience was assessed using the DMFT index, while dental erosion was evaluated using the O'Sullivan index. Data were analyzed using descriptive and inferential statistics, with a significance level of 5%.

Results:

The highest overweight and obesity percentages were verified among adolescents at risk / disorder, respectively, 33% and 16%. There was a statistically significant association between behavioral risk and variables standard dietary pattern (p<0.001), strict diet (p<0.001), fasting for 24 hours (p<0.001), self-induced vomiting (p<0.001), and BMI (p<0.001). There was also a statistically significant difference between behavioral risk and the presence of dental caries (p<0.05) and erosion (p<0.001).

Conclusion:

Behavioral risk for eating disorders in female adolescents was associated with standard dietary patterns, strict diet and, self-induced vomiting. Adolescents at risk / eating disorders for bulimia were related to dental caries and erosion.

Keywords: Body dysmorphic disorders, Bulimia nervosa, Diet, Adolescents, Behavioral risk, Vomiting.


Article Information


Identifiers and Pagination:

Year: 2020
Volume: 14
First Page: 7
Last Page: 12
Publisher Id: TODENTJ-14-7
DOI: 10.2174/1874210602014010007

Article History:

Received Date: 06/08/2019
Revision Received Date: 03/12/2019
Acceptance Date: 18/12/2019
Electronic publication date: 14/02/2020
Collection year: 2020

© 2020 Cavalcanti et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at the School of Dentistry, Paraíba State University, Campina Grande, Brazil; 58429-570, Tel: +55 83 3315-3326;
E-mail: alessandrouepb@gmail.com






1. INTRODUCTION

The prevalence of eating disorders has increased in Brazil and other countries, becoming an essential public health problem [1Brasil. Ministério da Saúde. Cuidado com a compulsão alimentar 2018. Available at: https://saudebrasilportal.com.br/eu-quero-me- alimentar-melhor/destaques/1247-cuidado-com-a-compulsao-alimentar. [Accessed on September 22, 2018]. [Portuguese], 2Prisco APK, de Araújo TM, de Almeida MM, Santos KOB. Prevalence of eating disorders in urban workers in a city of the northeast of Brazil. Cien Saude Colet 2013; 18(4): 1109-18.
[http://dx.doi.org/10.1590/S1413-81232013000400024] [PMID: 23670388]
]. This condition is relatively common among adolescents and young people, especially in women [3Litmanen J, Fröjd S, Marttunen M, Isomaa R, Kaltiala-Heino R. Are eating disorders and their symptoms increasing in prevalence among adolescent population? Nord J Psychiatry 2017; 71(1): 61-6.
[http://dx.doi.org/10.1080/08039488.2016.1224272] [PMID: 27626363]
], with ages ranging from 14 to 19 years [4Herpertz-Dahlmann B. Adolescent eating disorders: update on definitions, symptomatology, epidemiology, and comorbidity. Child Adolesc Psychiatr Clin N Am 2015; 24(1): 177-96.
[http://dx.doi.org/10.1016/j.chc.2014.08.003] [PMID: 25455581]
].

Anorexia and bulimia nervosa are among eating disorders [5Kisely S, Baghaie H, Lalloo R, Johnson NW. Association between poor oral health and eating disorders: Systematic review and meta-analysis. Br J Psychiatry 2015; 207(4): 299-305.
[http://dx.doi.org/10.1192/bjp.bp.114.156323] [PMID: 26429686]
], which cause women to adopt inappropriate eating behaviors, such as induced vomiting [6Fortes LdeS, Almeida SdeS, Cipriani FM, Ferreira MEC. Inappropriate eating behavior: A longitudinal study with female adolescents. Rev Paul Pediatr 2014; 32(1): 85-91.
[http://dx.doi.org/10.1590/S0103-05822014000100014] [PMID: 24676195]
] and binge eating [7Uhlen MM, Tveit AB, Stenhagen KR, Mulic A. Self-induced vomiting and dental erosion--a clinical study. BMC Oral Health 2014; 14: 92.
[http://dx.doi.org/10.1186/1472-6831-14-92] [PMID: 25069878]
]. In addition, eating disorders are related to negative feelings related to body image [8Miranda VPN, Conti MA, de Carvalho PH, Bastos RR, Ferreira MEC. Body image in different periods of adolescence. Rev Paul Pediatr 2014; 32(1): 63-9.
[http://dx.doi.org/10.1590/S0103-05822014000100011] [PMID: 24676192]
] due to a beauty pattern currently diffused by the media, which exerts a marked effect on the female population [9Oliveira LL, Hutz CS. Eating disorders: The role of cultural aspects in the contemporary world. Psicol Estud 2010; 15(3): 575-82.
[http://dx.doi.org/10.1590/S1413-73722010000300015]
].

Eating disorders, in addition to establishing fear of weight gain and pathological concern with body shape [4Herpertz-Dahlmann B. Adolescent eating disorders: update on definitions, symptomatology, epidemiology, and comorbidity. Child Adolesc Psychiatr Clin N Am 2015; 24(1): 177-96.
[http://dx.doi.org/10.1016/j.chc.2014.08.003] [PMID: 25455581]
], can also cause significant clinical alterations, including changes in the oral health status of these individuals, such as increased incidence of caries and the development of dental erosion [10Kavitha PR, Vivek P, Hegde AM. Eating disorders and their implications on oral health-role of dentists. J Clin Pediatr Dent 2011; 36(2): 155-60.
[http://dx.doi.org/10.17796/jcpd.36.2.3785414p682843wj] [PMID: 22524077]
]. The oral environment could be influenced both by bacterial activity and acidic foods and beverages. In fact, an acid environment can alter roughness [11Poggio C, Dagna A, Chiesa M, Colombo M, Scribante A. Surface roughness of flowable resin composites eroded by acidic and alcoholic drinks. J Conserv Dent 2012; 15(2): 137-40.
[http://dx.doi.org/10.4103/0972-0707.94581] [PMID: 22557811]
]. Therefore, the early detection of these eating disorders is important for establishing the prognosis and treatment of these disorders [12Johansson AK, Norring C, Unell L, Johansson A. Eating disorders and oral health: A matched case-control study. Eur J Oral Sci 2012; 120(1): 61-8.
[http://dx.doi.org/10.1111/j.1600-0722.2011.00922.x] [PMID: 22288922]
].

Knowing that individuals with eating disorders are ashamed of their behavior [13Vale AMO, Elias LR. Eating disorders: A behavioral analysis perspective. Rev Bras Ter Comport Cogn 2011; 13(1): 52-70.], that early erosive lesions on permanent teeth as a result of acts such as self-induced vomiting as well as caries lesions can compromise the dentition throughout the individual’s life, requiring extensive restorative procedures, epidemiological studies should be carried out for the identification of these individuals and for early diagnosis, aiming at the implementation of adequate curative and preventive measures.

Therefore, the aim of this study was to evaluate the behavioral risk for eating disorders in female adolescents and associated factors, as well as their relationship with dental caries and erosion.

2. MATERIALS AND METHODS

2.1. Study Design and Sample

This cross-sectional study is part of a larger research project [14Brandt LMT, Fernandes LHF, Aragão AS, et al. Relationship between risk behavior for eating disorders and dental caries and dental erosion. Sci World J 2017.
[http://dx.doi.org/10.1155/2017/1656417]
] and was conducted, from August 2017 to April 2018, in public and private high schools of Campina Grande, Paraiba, Brazil, northeastern Brazil, a city with about 404,072 inhabitants, divided into eight health districts, with Human Development Index (HDI) of 0.72 and Gini Coefficient of 0.58.

The sample consisted of 200 female students, after sample calculation, taken from a larger study [14Brandt LMT, Fernandes LHF, Aragão AS, et al. Relationship between risk behavior for eating disorders and dental caries and dental erosion. Sci World J 2017.
[http://dx.doi.org/10.1155/2017/1656417]
], aged 15 to 18 years old, who were divided into two groups according to the risk behavioral: Group 1 - adolescents without risk and Group 2 - adolescents at risk / disorder. Those who used fixed orthodontic appliances, or who were already diagnosed with eating disorders and who were being treated for eating disorders or adolescents with gastroesophageal reflux were excluded [14Brandt LMT, Fernandes LHF, Aragão AS, et al. Relationship between risk behavior for eating disorders and dental caries and dental erosion. Sci World J 2017.
[http://dx.doi.org/10.1155/2017/1656417]
].

2.2. Socio-Demographic and Behavioral Data Collection

Data on age, school type, use of dental services, eating habits (regular dietary pattern, strict diet, fasting for 24 hours, and self-induced vomiting) were recorded in a questionnaire. Fasting for 24 hours or intermittent fasting is an eating pattern that cycles between periods of fasting and eating.

2.3. Bulimic Investigatory Test of Edinburgh (BITE)

This tool presents final results of two scales, one is the symptoms and the other is the severity [15Ximenes RSC, Colares V, Bertulino T, Couto GBL, Sougey EB. Brazilian version of the “BITE” for use in adolescents. Arq Bras Psicol 2011; 63(1): 52-63.]. The scale of symptoms has three possible outcomes: situation of “no risk” for the development of eating disorders (score <10); “risk situation” (score ≥ 10 and less than 20) for the development of eating disorders, which suggests an unusual eating standard without all the criteria that characterize an eating disorder; “eating disorder situation” (scores from 20 to a maximum of 30), characterized by the presence of binge-eating behavior and a high possibility of the presence of bulimia, which is considered as the main indicator for the occurrence of eating disorders. It is recommended that subjects responding to the questionnaire should be considered for their behavior in the last three months [15Ximenes RSC, Colares V, Bertulino T, Couto GBL, Sougey EB. Brazilian version of the “BITE” for use in adolescents. Arq Bras Psicol 2011; 63(1): 52-63.]. Therefore, Group 1 comprised of adole- scents with scores <10, while Group 2 included adolescents with scores between 10 and 30.

2.4. Dental Caries and Dental Erosion

Dental examinations were performed by two trained and calibrated examiners. The inter-examiner agreement obtained a value of 0.97, and intraexaminer agreement obtained a value of 0.98.

Dental caries was assessed through the DMFT index [16World Health Organization. Oral Health Surveys Basic Methods 5th ed. 2013.], while dental erosion was evaluated using the O'Sullivan index [17O’Sullivan EA. A new index for measurement of erosion in children. Eur J Paediatr Dent 2000; 2(1): 69-74.], adapted for use in the four upper incisors [18Peres KG, Armênio MF, Peres MA, Traebert J, De Lacerda JT. Dental erosion in 12-year-old schoolchildren: A cross-sectional study in Southern Brazil. Int J Paediatr Dent 2005; 15(4): 249-55.
[http://dx.doi.org/10.1111/j.1365-263X.2005.00643.x] [PMID: 16011783]
] and the first permanent molars [19Vargas-Ferreira F, Piovesan C, Praetzel JR, Mendes FM, Allison PJ, Ardenghi TM. Tooth erosion with low severity does not impact child oral health-related quality of life. Caries Res 2010; 44(6): 531-9.
[http://dx.doi.org/10.1159/000321447] [PMID: 21051891]
].

Dental examinations were conducted in private rooms provided by the schools. Adolescents were positioned face to face with the examiner. At this stage, all appropriate personal protective equipments were used. Examinations were performed under artificial lighting (headlamp Petzl Zoom, Petzl America, Clearfield, UT, USA) with mouth mirrors (Prisma Instrumentos Odontológicos Ltda., São Paulo, SP, Brazil) packaged and sterilized, and sterile gauze pads (used to clean and dry the teeth) [14Brandt LMT, Fernandes LHF, Aragão AS, et al. Relationship between risk behavior for eating disorders and dental caries and dental erosion. Sci World J 2017.
[http://dx.doi.org/10.1155/2017/1656417]
].

2.5. Body Mass Index (BMI)

Height and weight were measured for BMI calculation using a stadiometer (Model 206, Seca Corp., Hamburg, Germany) and a digital scale with a precision of 0.1 kg (Model W-110H, Welmy Ind. e Com Ltda., Santa Bárbara do Oeste, SP, Brazil). Adolescents were classified as: underweight (BMI <17.7), normal weight (BMI between 17.8 and 23.4); overweight (BMI between 23.5 and 28.1) and obesity (BMI ≥ 28.2) [20World Health Organization. Growth reference data for 5-19 years WHO 2007. Available at: http://www.who.int/growthref/en/.].

2.6. Data Analysis

Data were analyzed using the Statistical Package for Social Sciences (SPSS for Windows, version 18.0, SPSS Inc., Chicago, IL USA). Bivariate analyses were performed to test the association between eating disorder condition and dental caries and erosion, using the Pearson Chi-square and Fisher's exact tests. The statistical significance level was set at 5%.

2.7. Ethical Considerations

This research project was approved by the Ethics Research Committee of the State University of Paraíba (Protocol No. 2.006.615) and the participants were informed about the purpose and methodology of the study and signed a consent form.

3. RESULTS

Most participants were 15 years old (35%), public schools (74.5%) which had used dental services in the last six months (57%) (Table 1). The occurrence of risk / behavior disorder was higher among adolescents in public schools (70%).

Female adolescents at risk / disorder had a lower frequency of regular dietary patterns when compared to those without risk (28% versus 55%). On the other hand, the adoption of a strict diet, fasting for 24 hours and self-induced vomiting were more frequent among adolescents at risk / disorder, respectively, 22%, 58%, and 35%. BMI analysis showed that the highest overweight and obesity percentages were verified among adolescents at risk / disorder, respectively, 33% and 16%. There was a statistically significant association (p<0.001) between adolescents without risk and those at risk / disorder for variables regular dietary standard, strict diet, fasting for 24 hours, self-induced vomiting and BMI (Table 2).

Regarding the components of the DMF-T Index, the percentage of decayed, missing and filled teeth was higher in adolescents with no behavior risk, respectively 89%, 25%, and 59%. However, the presence of dental erosion was higher in adolescents at risk / disorder (24%). The bivariate analysis revealed a statistically significant difference between the behavior risk and the presence of dental caries (p<0.05) and dental erosion (p<0.001) (Table 3).

Table 1
Distribution of adolescents according to age, type of school, and dental visit according to the risk behavior.


Table 2
Distribution of adolescents according to eating habits, the occurrence of self-induced vomiting and BMI.


Table 3
Distribution of adolescents according to DMF-T index and presence of dental erosion, according to the risk behavior.


4. DISCUSSION

This research aimed to analyze the occurrence of eating disorders in female adolescents. The choice for this population group was based on previous studies that pointed out a higher frequency of this condition among females [14Brandt LMT, Fernandes LHF, Aragão AS, et al. Relationship between risk behavior for eating disorders and dental caries and dental erosion. Sci World J 2017.
[http://dx.doi.org/10.1155/2017/1656417]
, 21Starr TB, Kreipe RE. Anorexia nervosa and bulimia nervosa: Brains, bones and breeding. Curr Psychiatry Rep 2014; 16(5): 441.
[http://dx.doi.org/10.1007/s11920-014-0441-4] [PMID: 24705938]
]. It is possible that the female predominance is due to the adoption of unhealthy eating behaviors as a measure to reduce body fat [6Fortes LdeS, Almeida SdeS, Cipriani FM, Ferreira MEC. Inappropriate eating behavior: A longitudinal study with female adolescents. Rev Paul Pediatr 2014; 32(1): 85-91.
[http://dx.doi.org/10.1590/S0103-05822014000100014] [PMID: 24676195]
] since women are constantly concerned about their body shape [14Brandt LMT, Fernandes LHF, Aragão AS, et al. Relationship between risk behavior for eating disorders and dental caries and dental erosion. Sci World J 2017.
[http://dx.doi.org/10.1155/2017/1656417]
].

In this study, 15-year-old adolescents had a higher frequency of eating disorders, a result similar to that described in other studies developed in Brazil [8Miranda VPN, Conti MA, de Carvalho PH, Bastos RR, Ferreira MEC. Body image in different periods of adolescence. Rev Paul Pediatr 2014; 32(1): 63-9.
[http://dx.doi.org/10.1590/S0103-05822014000100011] [PMID: 24676192]
, 22Hermont AP, Pordeus IA, Paiva SM, Abreu MH, Auad SM. Eating disorder risk behavior and dental implications among adolescents. Int J Eat Disord 2013; 46(7): 677-83.
[http://dx.doi.org/10.1002/eat.22132] [PMID: 23625589]
]. Some researchers have already warned about body image satisfaction in adolescence, highlighting the great concern about body weight and shape, which may lead to inadequate eating practices [23do Vale AM, Kerr LR, Bosi ML. Risk behaviors for eating disorders among female adolescents from different social strata in the Brazilian Northeastern. Cien Saude Colet 2011; 16(1): 121-32.
[PMID: 21180821]
]. In addition, it is possible to observe that with age advancement, the percentage of girls at risk for eating disorders in this study decreased, which may indicate that puberty progress reduces the prevalence of inappropriate eating behavior [6Fortes LdeS, Almeida SdeS, Cipriani FM, Ferreira MEC. Inappropriate eating behavior: A longitudinal study with female adolescents. Rev Paul Pediatr 2014; 32(1): 85-91.
[http://dx.doi.org/10.1590/S0103-05822014000100014] [PMID: 24676195]
].

Concerning the school type, it was found that students from public schools composed most of the sample, confirming the previous findings [14Brandt LMT, Fernandes LHF, Aragão AS, et al. Relationship between risk behavior for eating disorders and dental caries and dental erosion. Sci World J 2017.
[http://dx.doi.org/10.1155/2017/1656417]
, 22Hermont AP, Pordeus IA, Paiva SM, Abreu MH, Auad SM. Eating disorder risk behavior and dental implications among adolescents. Int J Eat Disord 2013; 46(7): 677-83.
[http://dx.doi.org/10.1002/eat.22132] [PMID: 23625589]
, 24Aragão AS, Fernandes LHF, Brandt LMT, Auad SM, Cavalcanti AL. Association between nutritional status and dental caries in Brazilian teenagers with and without risk for eating disorders. Braz Res Pediatr Dent Integr Clin 2016; 16(1): 479-89.
[http://dx.doi.org/10.4034/PBOCI.2016.161.50]
]. The greater participation of public school students in epidemiological studies may be related to the easy access to these schools, since managers understand the importance of conducting community-oriented studies and are extremely cooperative, providing unrestricted access for researchers. On the other hand, the opposite is verified in private institutions, in which students pay high tuition and managers understand this activity as an action that disrupts the school's administrative and educational routine, thus interfering with learning. In this research, specifically, one-fourth of students were from private schools.

With regard to the presence of eating disorders, female students from public schools presented a higher frequency of this condition. Relationship between school type and higher prevalence of eating disorders was not found among Finnish adolescents [3Litmanen J, Fröjd S, Marttunen M, Isomaa R, Kaltiala-Heino R. Are eating disorders and their symptoms increasing in prevalence among adolescent population? Nord J Psychiatry 2017; 71(1): 61-6.
[http://dx.doi.org/10.1080/08039488.2016.1224272] [PMID: 27626363]
]; however, among Norwegian students eating disorders were more common in girls at some schools than others, and this is not explained by the individual characteristics of the students [25Bould H, De Stavola B, Magnusson C, et al. The influence of school on whether girls develop eating disorders. Int J Epidemiol 2016; 45(2): 480-8.
[http://dx.doi.org/10.1093/ije/dyw037] [PMID: 27097749]
]. Schools with more girls, or more highly educated parents, are likely to have some students with eating disorders because female gender and parental education are risk factors for eating disorders [25Bould H, De Stavola B, Magnusson C, et al. The influence of school on whether girls develop eating disorders. Int J Epidemiol 2016; 45(2): 480-8.
[http://dx.doi.org/10.1093/ije/dyw037] [PMID: 27097749]
].

Regarding the visit to the dentist in the last 6 months, it was observed that the majority of female adolescents, including those at risk / disorder, had visited this professional during this period, and this information is essential since dentists are often responsible for identifying risk situations, preventing and treating implications in the oral cavity related to eating disorders [7Uhlen MM, Tveit AB, Stenhagen KR, Mulic A. Self-induced vomiting and dental erosion--a clinical study. BMC Oral Health 2014; 14: 92.
[http://dx.doi.org/10.1186/1472-6831-14-92] [PMID: 25069878]
]. Moreover, although dentists may be one the first health professionals to recognize symptoms of eating disorders [10Kavitha PR, Vivek P, Hegde AM. Eating disorders and their implications on oral health-role of dentists. J Clin Pediatr Dent 2011; 36(2): 155-60.
[http://dx.doi.org/10.17796/jcpd.36.2.3785414p682843wj] [PMID: 22524077]
], many prefer not to report their suspicions either due to the lack of confidence in their diagnosis or to the fear of losing the patient [22Hermont AP, Pordeus IA, Paiva SM, Abreu MH, Auad SM. Eating disorder risk behavior and dental implications among adolescents. Int J Eat Disord 2013; 46(7): 677-83.
[http://dx.doi.org/10.1002/eat.22132] [PMID: 23625589]
].

Almost one-third of adolescents at risk / eating disorder did not adopt a regular dietary pattern, confirming previous findings [23do Vale AM, Kerr LR, Bosi ML. Risk behaviors for eating disorders among female adolescents from different social strata in the Brazilian Northeastern. Cien Saude Colet 2011; 16(1): 121-32.
[PMID: 21180821]
, 24Aragão AS, Fernandes LHF, Brandt LMT, Auad SM, Cavalcanti AL. Association between nutritional status and dental caries in Brazilian teenagers with and without risk for eating disorders. Braz Res Pediatr Dent Integr Clin 2016; 16(1): 479-89.
[http://dx.doi.org/10.4034/PBOCI.2016.161.50]
]. In addition, it was observed that those belonging to the risk / disorder group had a more strict diet, similar to that found in female Norwegian students [3Litmanen J, Fröjd S, Marttunen M, Isomaa R, Kaltiala-Heino R. Are eating disorders and their symptoms increasing in prevalence among adolescent population? Nord J Psychiatry 2017; 71(1): 61-6.
[http://dx.doi.org/10.1080/08039488.2016.1224272] [PMID: 27626363]
]. These inadequate dietary practices are a regular practice for an increasing number of women, in which dietary restriction proves to be a harmful strategy for coping with adverse daily situations [23do Vale AM, Kerr LR, Bosi ML. Risk behaviors for eating disorders among female adolescents from different social strata in the Brazilian Northeastern. Cien Saude Colet 2011; 16(1): 121-32.
[PMID: 21180821]
, 24Aragão AS, Fernandes LHF, Brandt LMT, Auad SM, Cavalcanti AL. Association between nutritional status and dental caries in Brazilian teenagers with and without risk for eating disorders. Braz Res Pediatr Dent Integr Clin 2016; 16(1): 479-89.
[http://dx.doi.org/10.4034/PBOCI.2016.161.50]
].

There was a statistically significant difference between fasting for more than 24 hours and the presence of behavioral risk for eating disorders, confirming results described among female American adolescents [26Jenkins PE, Hoste RR, Doyle AC, et al. Health-related quality of life among adolescents with eating disorders. J Psychosom Res 2014; 76(1): 1-5.
[http://dx.doi.org/10.1016/j.jpsychores.2013.11.006] [PMID: 24360133]
]. This is probably explained by the fact that many adolescents believe that this is the easiest and fastest way to lose weight and reach the desired body weight, regardless of subsequent consequences [23do Vale AM, Kerr LR, Bosi ML. Risk behaviors for eating disorders among female adolescents from different social strata in the Brazilian Northeastern. Cien Saude Colet 2011; 16(1): 121-32.
[PMID: 21180821]
].

Self-induced vomiting was more frequent among students at risk / eating disorder, confirming previous findings described in Sweden [12Johansson AK, Norring C, Unell L, Johansson A. Eating disorders and oral health: A matched case-control study. Eur J Oral Sci 2012; 120(1): 61-8.
[http://dx.doi.org/10.1111/j.1600-0722.2011.00922.x] [PMID: 22288922]
] and Brazil [24Aragão AS, Fernandes LHF, Brandt LMT, Auad SM, Cavalcanti AL. Association between nutritional status and dental caries in Brazilian teenagers with and without risk for eating disorders. Braz Res Pediatr Dent Integr Clin 2016; 16(1): 479-89.
[http://dx.doi.org/10.4034/PBOCI.2016.161.50]
]. The use of compensatory methods to control weight gain, such as self-induced vomiting, is common in girls with eating disorders [3Litmanen J, Fröjd S, Marttunen M, Isomaa R, Kaltiala-Heino R. Are eating disorders and their symptoms increasing in prevalence among adolescent population? Nord J Psychiatry 2017; 71(1): 61-6.
[http://dx.doi.org/10.1080/08039488.2016.1224272] [PMID: 27626363]
], which habit is related to a high incidence of oral pathologies [5Kisely S, Baghaie H, Lalloo R, Johnson NW. Association between poor oral health and eating disorders: Systematic review and meta-analysis. Br J Psychiatry 2015; 207(4): 299-305.
[http://dx.doi.org/10.1192/bjp.bp.114.156323] [PMID: 26429686]
]. Gastric acid can cause, for example, tooth erosion [7Uhlen MM, Tveit AB, Stenhagen KR, Mulic A. Self-induced vomiting and dental erosion--a clinical study. BMC Oral Health 2014; 14: 92.
[http://dx.doi.org/10.1186/1472-6831-14-92] [PMID: 25069878]
, 27Mathew S, Luke AM, Walia T, Masri AG, Jamal H, Pawar AM. Effect of fruit juices and other beverages on loss of tooth structure. Pesqui Bras Odontopediatria Clin Integr 2018; 18(1)e3888
[http://dx.doi.org/10.4034/PBOCI.2018.181.22]
-30Oliveira PAD, Paiva SM, Costa MLG, Abreu MHNG, Carvalho SD, Auad SM. Dental erosion in Brazilian children with gastroesophageal reflux disease. Braz Res Pediatr Dent Integr Clin 2015; 15(1): 227-34.
[http://dx.doi.org/10.4034/PBOCI.2015.151.24]
], causing irreversible damage to tooth enamel.

The presence of overweight and obesity was higher among girls belonging to the risk / behavioral disorder group for eating disorders. This overweight situation was also found in other studies [14Brandt LMT, Fernandes LHF, Aragão AS, et al. Relationship between risk behavior for eating disorders and dental caries and dental erosion. Sci World J 2017.
[http://dx.doi.org/10.1155/2017/1656417]
]. Body image dissatisfaction due to the beautiful pattern and search for a perfect body established by the media and society [8Miranda VPN, Conti MA, de Carvalho PH, Bastos RR, Ferreira MEC. Body image in different periods of adolescence. Rev Paul Pediatr 2014; 32(1): 63-9.
[http://dx.doi.org/10.1590/S0103-05822014000100011] [PMID: 24676192]
] can induce compulsory eating episodes followed by inadequate attempts to compensate for excess weight [14Brandt LMT, Fernandes LHF, Aragão AS, et al. Relationship between risk behavior for eating disorders and dental caries and dental erosion. Sci World J 2017.
[http://dx.doi.org/10.1155/2017/1656417]
]. The socioeconomic context could influence the presence of tooth erosion and obesity, modulating behaviors such as diet or lifestyle habits [31Salas MMS, Vargas-Ferreira F, Nascimento GG, Huysmanns MC, Demarco FF. Tooth erosion association with obesity: Findings from a Brazilian survey in schoolchildren. Pesqui Bras Odontopediatria Clin Integr 2018; 18(1)e3764
[http://dx.doi.org/10.4034/PBOCI.2018.181.25]
].

The percentage of students with dental caries was high in both groups. Several studies have already demonstrated a high prevalence of this condition in women with behavioral risk for eating disorders [14Brandt LMT, Fernandes LHF, Aragão AS, et al. Relationship between risk behavior for eating disorders and dental caries and dental erosion. Sci World J 2017.
[http://dx.doi.org/10.1155/2017/1656417]
, 22Hermont AP, Pordeus IA, Paiva SM, Abreu MH, Auad SM. Eating disorder risk behavior and dental implications among adolescents. Int J Eat Disord 2013; 46(7): 677-83.
[http://dx.doi.org/10.1002/eat.22132] [PMID: 23625589]
, 24Aragão AS, Fernandes LHF, Brandt LMT, Auad SM, Cavalcanti AL. Association between nutritional status and dental caries in Brazilian teenagers with and without risk for eating disorders. Braz Res Pediatr Dent Integr Clin 2016; 16(1): 479-89.
[http://dx.doi.org/10.4034/PBOCI.2016.161.50]
, 32Jugale PV, Pramila M, Murthy AK, Rangath S. Oral manifestations of suspected eating disorders among women of 20-25 years in Bangalore City, India. J Health Popul Nutr 2014; 32(1): 46-50.
[PMID: 24847592]
]. Parallel factors to be considered are an individual's oral hygiene [33Santos FG, Aguiar YPC, Cavalcanti AFC, et al. Assessment of oral hygiene level and periodontal condition in Brazilian adolescents. Braz Res Pediatr Dent Integr Clin 2016; 16(1): 207-17.
[http://dx.doi.org/10.4034/PBOCI.2016.161.22]
], cariogenicity of the diet, malnutrition, genetic predisposition, fluoride experience during tooth development, and ingestion of certain types of medication [32Jugale PV, Pramila M, Murthy AK, Rangath S. Oral manifestations of suspected eating disorders among women of 20-25 years in Bangalore City, India. J Health Popul Nutr 2014; 32(1): 46-50.
[PMID: 24847592]
]. Another component of the DMF-T Index that was elevated was tooth loss. The oral health indicator that has been described as the most negatively influencing quality of life is tooth loss [34Rocha EKTG, Vanderlei AD, Ribeiro CMB, Lima ALO, Santos AF, Trindade Filho EM. Impact of tooth loss on quality of life. Braz Res Pediatr Dent Integr Clin 2016; 16(1): 69-78.
[http://dx.doi.org/10.4034/PBOCI.2016.161.08]
]. Therefore, educational actions aimed at the prevention of an inadequate nutritional status also have considerable potential with regard to benefitting the promotion of oral health [35Fraiz GM, Crispim SP, Montes GR, et al. Excess body weight, snack limits and dental caries in Brazilian preschoolers: A population-based study. Pesqui Bras Odontopediatria Clin Integr 2019; 19(1)e4584
[http://dx.doi.org/10.4034/PBOCI.2019.191.27]
].

Dental erosion is not a new phenomenon and should be used to refer to the chemical process - tooth demineralization without the involvement of bacteria [36Diniz MB, Lussi A. Dental erosion in pediatric dentistry: What is the clinical relevance? Pesqui Bras Odontopediatria Clin Integr 2017; 17(1)e3592
[http://dx.doi.org/10.4034/PBOCI.2017.171.ed]
]. Epidemiological studies have indicated that dental erosion is a condition of growing concern that is prevalent in all age groups [31Salas MMS, Vargas-Ferreira F, Nascimento GG, Huysmanns MC, Demarco FF. Tooth erosion association with obesity: Findings from a Brazilian survey in schoolchildren. Pesqui Bras Odontopediatria Clin Integr 2018; 18(1)e3764
[http://dx.doi.org/10.4034/PBOCI.2018.181.25]
, 37Oliveira PRR, Amaral FLB, França FMG, Basting RT, Turssi CP. Sour gummy candies and their effect on salivary pH kinetics. Pesqui Bras Odontopediatria Clin Integr 2018; 18(1)e3866
[http://dx.doi.org/10.4034/PBOCI.2018.181.14]
]. In this study, dental erosion was evaluated using index teeth. The use of index teeth is considered adequate since they are exposed in the mouth for a longer period of time when compared to other teeth, being more susceptible to the action of possible etiological factors [18Peres KG, Armênio MF, Peres MA, Traebert J, De Lacerda JT. Dental erosion in 12-year-old schoolchildren: A cross-sectional study in Southern Brazil. Int J Paediatr Dent 2005; 15(4): 249-55.
[http://dx.doi.org/10.1111/j.1365-263X.2005.00643.x] [PMID: 16011783]
].

A higher prevalence of dental erosion was observed in adolescents at risk / behavioral disorder, confirming previous results [12Johansson AK, Norring C, Unell L, Johansson A. Eating disorders and oral health: A matched case-control study. Eur J Oral Sci 2012; 120(1): 61-8.
[http://dx.doi.org/10.1111/j.1600-0722.2011.00922.x] [PMID: 22288922]
, 22Hermont AP, Pordeus IA, Paiva SM, Abreu MH, Auad SM. Eating disorder risk behavior and dental implications among adolescents. Int J Eat Disord 2013; 46(7): 677-83.
[http://dx.doi.org/10.1002/eat.22132] [PMID: 23625589]
]. Possibly, this condition is related to the habit of self-inducing vomiting in this group of adolescents, a characteristic behavior in individuals with eating disorders [5Kisely S, Baghaie H, Lalloo R, Johnson NW. Association between poor oral health and eating disorders: Systematic review and meta-analysis. Br J Psychiatry 2015; 207(4): 299-305.
[http://dx.doi.org/10.1192/bjp.bp.114.156323] [PMID: 26429686]
, 10Kavitha PR, Vivek P, Hegde AM. Eating disorders and their implications on oral health-role of dentists. J Clin Pediatr Dent 2011; 36(2): 155-60.
[http://dx.doi.org/10.17796/jcpd.36.2.3785414p682843wj] [PMID: 22524077]
]. Erosive lesions resulting from acid attack affect specific regions of the teeth, but the enamel portions located near the gingival margin remain intact [38Shitsuka C, Corrêa MSNP, Duarte DA, Leite MF. Quantification of dental biofilm in children with dental erosion. Braz Res Pediatr Dent Integr Clin 2015; 15(1): 95-101.
[http://dx.doi.org/10.4034/PBOCI.2015.151.11]
]. It is important to note that individual susceptibility to dental enamel erosion differs among individual [39Vieira AR, Chung C, Raffensperger SK, Muluk P. Milk reverts the effects of an enamel erosive but healthy diet. Pesqui Bras Odontopediatria Clin Integr 2018; 18(1)e3848
[http://dx.doi.org/10.4034/PBOCI.2018.181.02]
].

Limitations of this study should be addressed. First, the cross-sectional design of the study allowed to observe these findings in one specific moment, without being able to consider the causal and temporal relationship. The second limitation is the use of the WHO criteria for the diagnosis of dental disease, which not allow the diagnosis of initial enamel lesions, allowing only the registration of lesions cavitated in dentin. However, the DMFT index is established by the WHO and used by several studies [14Brandt LMT, Fernandes LHF, Aragão AS, et al. Relationship between risk behavior for eating disorders and dental caries and dental erosion. Sci World J 2017.
[http://dx.doi.org/10.1155/2017/1656417]
, 35Fraiz GM, Crispim SP, Montes GR, et al. Excess body weight, snack limits and dental caries in Brazilian preschoolers: A population-based study. Pesqui Bras Odontopediatria Clin Integr 2019; 19(1)e4584
[http://dx.doi.org/10.4034/PBOCI.2019.191.27]
, 40Porcelli ICS, Corsi NM, Barata TJE, et al. Sweetness taste preference levels and their relationship to the nutritional and dental caries patterns among Brazilian preschool children. Pesqui Bras Odontopediatria Clin Integr 2019; 19(1)e4189
[http://dx.doi.org/10.4034/PBOCI.2019.191.20]
, 41Lendrawati L, Pintauli S, Rahardjo A, Bachtiar A, Maharani DA. Risk factors of dental caries: Consumption of sugary snacks among Indonesian adolescents. Pesqui Bras Odontopediatria Clin Integr 2019; 19(1)e4488
[http://dx.doi.org/10.4034/PBOCI.2019.191.42]
].

CONCLUSION

The behavioral risk for eating disorders was associated with standard dietary patterns, strict diet, and self-induced vomiting. Adolescents at risk / eating disorders for bulimia were related to dental caries and erosion.

ETHICS APPROVAL AND CONSENT TO PARTICIPATE

This study was approved by the State University of Paraiba Ethics Research Committee, Brazil (Protocol No. 2.006.615).

HUMAN AND ANIMAL RIGHTS

This study followed the recommendations of the Declaration of Helsinki and Resolution 466/12 of the Brazilian National Health Council.

CONSENT FOR PUBLICATION

Written informed consent was obtained prior to the study.

AVAILABILITY OF DATA AND MATERIALS

The data sets analyzed during the current study are available from the corresponding author [A.L.C] upon reasonable request.

FUNDING

This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001 and the National Council for Scientific and Technological Development (CNPq) - Fellowship of Research Productivity (Process No. 302850/2016-3).

CONFLICT OF INTEREST

The authors declare no conflict of interest, financial or otherwise.

ACKNOWLEDGEMENTS

Declared none.

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[http://dx.doi.org/10.4034/PBOCI.2019.191.42]
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