Table 1: Methodological quality score.

1. Study design: description of the study design 0.4
2. Participants
Sample standards: participant’s inclusion and exclusion criteria.
Sample characterization: number and characteristic of participants.
Calculation of sample size
Control group
Ethics: evidence of ethical factors
1.0
0.2
0.2
0.2
0.2
0.2
3. Length of follow-up period
3 a 5 months after bonding
≥ 6 months after bonding
After debonding
Month collections
4.0
0.5
1.5
1.5
0.5
4. Periodontal outcome measure
Periodontal Index (PI)
Gingival Index (GI)
Bleeding on Probing (BOP)
Pocket Probing Depth (PPD)
4.0
0.5
0.5
1.0
2.0
5. Statistical analysis: adequate (indication of the test applied and significance level) 0.2
6. Results: adequate presentation of results (presentation of all proposed results;
comparison between results; participant dropout with justification)
0.2