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Stability of maxillary protraction therapy in children with Class III malocclusion: a systematic review and meta-analysis.
- Source :
-
Clinical Oral Investigations . Sep2018, Vol. 22 Issue 7, p2639-2652. 14p. 1 Diagram, 7 Charts, 3 Graphs. - Publication Year :
- 2018
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Abstract
- Objective: The objective of this study was to evaluate the stability of treatment effects of maxillary protraction therapy in Class III children.Materials and methods: Multiple electronic databases were searched from 01/1996 to 10/2016. Randomized clinical trials, controlled clinical trials, and cohort studies with untreated Class III controls and a follow-up over 2 years were considered for inclusion. The methodological quality of the studies and publication bias were evaluated. Mean differences and 95% confidence intervals (CI) of six variables (SNA, SNB, ANB, mandibular plane angle, overjet, and lower incisor angle) were calculated.Results: Ten studies were included in the qualitative analysis, and four studies were included in the quantitative analysis. Compared with the control group, after treatment, the treated group showed significant changes: SNA +1.79° (95% CI: 1.23, 2.34), SNB −1.16° (95% CI −2.08, −0.24), ANB +2.92° (95% CI 2.40, 3.44), mandibular plane angle +1.41° (95% CI 0.63, 2.20), overjet +3.94 mm (95% CI 2.17, 5.71) and lower incisor angle −3.07° (95% CI −4.92, −1.22). During follow-up, the changes in five variables reflected significant relapse. Overall, the treated group showed significant changes only in ANB +1.66° (95% CI 0.97, 2.35) and overjet +2.41 mm (95% CI 1.60, 3.23).Conclusions: Maxillary protraction can be a short-term effective therapy and might improve sagittal skeletal and dental relationships in the medium term. But some skeletal and dental variables showed significant relapse during the follow-up period. Long-term studies are still required to further evaluate its skeletal benefits.Clinical relevance: The study evaluated the medium-term stability of skeletal and dental effects of maxillary protraction in Class III children and discussed whether the therapy can reduce the need for orthognathic surgery. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14326981
- Volume :
- 22
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Clinical Oral Investigations
- Publication Type :
- Academic Journal
- Accession number :
- 131187968
- Full Text :
- https://doi.org/10.1007/s00784-018-2363-8