Fluoride ion release · Human enamel specimens around orthodontic brackets (in vitro)
In vitro, the commercial RMGIC Fuji Ortho LC showed significant fluoride release up to 6 months in a single study (ungraded).
1 finding from 1 review
Calcium and phosphate ion release · Human enamel specimens around orthodontic brackets (in vitro)
In vitro, an n-ACP-containing adhesive significantly increased calcium and phosphate ion release up to 42 days in a single study (ungraded).
1 finding from 1 review
Bracket (bond) failure · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)
Opal Seal showed no difference in bracket failure, with certainty not graded.
1 finding from 1 review
No significant differences were observed in bracket failure rates among different primers, dental arches, bracket types, or sexes.
1 study · 56 participants
GRADE not reported
Ion release · Human teeth with early enamel lesions surrounding orthodontic brackets
No meta-analysis was conducted; most studies reported increased ion release over time, but few reported peak values.
1 finding from 1 review
no estimate extracted
8 studies
GRADE not reported
Ion release (fluoride, calcium, phosphate) · Human enamel specimens around orthodontic brackets (in vitro)
In vitro, among the 5 BAG ion-release studies only Ga-doped BAG (GaMBN, Song [31]) reported a significant increase (phosphate, up to 14 days); a general significant fluoride/calcium/phosphate increase across all 5 is not supported (ungraded).
1 finding from 1 review
Enamel mineral content · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)
Chitosan and TiO2 adhesive showed no enamel mineral-content difference, with certainty not graded.
1 finding from 1 review
Lactobacilli presence (CFU > 10^5) · Adults undergoing orthodontic treatment
Aligners probably lower the risk of high lactobacilli counts versus fixed appliances in adults at 3 months (RR 0.09, 95% CI 0.02 to 0.47; low certainty).
2 findings from 1 review
Average fluorescence loss (dF%) · Adults undergoing orthodontic treatment
A single study reported lower average fluorescence (mineral) loss with aligners versus fixed appliances in adults at 3 months (MD -1.40, 95% CI -2.15 to -0.65; ungraded).
1 finding from 1 review
MD -1.40 [-2.15, -0.65]
1 study
GRADE not reported
Plaque · Adolescents/teenagers undergoing orthodontic treatment
A single study reported a lower full-mouth plaque score with aligners versus fixed appliances in adolescents at 12 months (MD -43.48, 95% CI -47.65 to -39.31; ungraded).
1 finding from 1 review
Probing pocket depth (PPD/PD) · Adults undergoing orthodontic treatment
Aligners may reduce pocket depth compared with fixed appliances in adults at 6-12 weeks (MD -0.42 mm, 95% CI -0.71 to -0.12; very low certainty).
1 finding from 1 review
Lesion area (decalcification area, pixels) · Adults undergoing orthodontic treatment
A single study reported a larger decalcification lesion area with aligners versus fixed appliances in adults at 3 months (MD 80.50 pixels, 95% CI 60.52 to 100.48; ungraded).
1 finding from 1 review
MD 80.50 [60.52, 100.48]
1 study
GRADE not reported
Patient satisfaction (measured by patient satisfaction or aesthetic scales) · Patients with post-orthodontic white spot lesions and permanent dentition
In the single RCT, all bleached patients were satisfied with the aesthetic outcome, though the trial was at high risk of bias (ungraded).
1 finding from 1 review
Colour disparity between carious and non-affected enamel · Permanent teeth with post-orthodontic or artificial white spot lesions
Bleaching may diminish colour disparities between carious and non-affected areas (very low certainty).
1 finding from 1 review
no estimate extracted
3 studies
GRADE not reported