|
Authors/ Year |
Study Design | Sample Description | Total Dtudy Time/Interval Times | Periodontal Index | Statistical Analysis | Conclusion |
|---|---|---|---|---|---|---|
| Ristic M / 2007 | Prospective longitudinal controlled study | 32 subjects, 13 males and 19 female (from 12 to 18 years old) |
before placement of fixed appliance 1, 3, 6 months after |
PI, GI, PPD, GBI | Student’s t-test and chi-squared test combined with McNemar test | In adolescents, treatment increased the value of periodontal indices. |
| Liu H / 2011 | Not mentioned | Group A (at the beginning of treatment) 28 subjects, 22 females, 6 males (17.6+- 5.68 y) Group B (at the completation of treatment) 20 subjects 13 female, 7 males (17.8± 4.49 y) |
Group A Before placement of appliance and 1, 3 months after Group B Before appliance removal and 1, 3,6 month after appliance removal |
PI, GI, PPD | SPPS 16.0 for statistical analysis, T-test and Spearman test |
Fixed orthodontic treatment is conducive to dental plaque accumulation and gingival infiammation. After removal of orthodontic appliances the periodontal condition improved. |
| Van Gastel J / 2008 | Longitudinal split-mouth desisgn | 24 subjects, 10 boys and 14 girls (14.6± 1.1 years) |
Before placement appliance and 20, 24, and 36 weeks after | PPD, BOP | A linear mixed model was used with the data, using time, type, and their interaction as fixed factors.. Multiple comparisons between types and times were set up and a comparison of times was also performed for two types of subgroups. | Placement of both types of orthodontic attachments had a negative influence on the microflora and the clinical periodontal variables |
| Ghijselings E / 2014 | Longitudinal prospective design | 24 subjects, 10 males, 14 females (14.6±1.1 y) | Before placement of appliance, after bracket removal and 2 years post-treatment | PPD and BOP | A linear mixed model was used with the data, using time, type, and their interaction as fixed factors.. Multiple comparisons between types and times were set up and a comparison of times was also performed for two types of subgroups | Normalization toward the values at baseline was seen 2 years after removal of appliances |
|
Van Gastel J/ 2011 |
Longitudinal prospective design | 24 subjects, 10 males, 14 females (14.6±1.1 y) | Before placement of appliance (T1), after bracket removal (T2) and 3 months post-treatment (T3). | PPD and POB | A linear mixed model was used with the data, using time, type, and their interaction as fixed factors.. Multiple comparisons between types and times were set up and a comparison of times was also performed for two types of subgroups | Clinical parameters PPD, POB, and GCF flow showed a significant increase between T1 and T2. Between T2 and T3 these variables decreased significantly but remained significantly higher than at T1 (except for BOP values at the bonded sites) |