| Factors associated with orthodontic stability: a retrospective study of 209 patients. | |
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MedLine Citation:
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PMID: 20209179 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Aim: To assess the long-term stability of orthodontic treatment and some factors associated to posttreatment changes. Methods: Six hundred twenty-seven dental casts of 209 patients were examined with the PAR Index at pretreatment (T1), end of treatment (T2), and at long-term follow-up (T3, mean 8.5 years posttreatment). Friedman test and multiple regression analysis at P < .05 were used to evaluate changes among the time points and factors associated with stability. Results: After orthodontic treatment, the PAR Index improved by 94.2%. No significant change was observed between T2 and T3 (P > .05). However, when the sample was divided into a well- (PAR Index =/< 3) and a less well-finished (PAR Index > 3) group, it was observed that well-finished patients experienced some deterioration (P < .001), whereas the less well-finished ones showed some improvement (P < .05). Even with the deterioration, the well-finished patients still had a better PAR Index at T3 compared to the less well-finished ones. Regression analysis showed that PAR Index at T1 and T2, age at T1, and length of retainer wear had a slight association with occlusal stability (R2 = 0.27). No significant association was observed between stability and length of treatment, length of follow-up, sex, extraction, or third molar status on the other side. Conclusion: Orthodontic treatment is quite stable. Not so well-finished treatments tend to show some improvement and well-finished ones deteriorate some. Well-finished patients still have better occlusal characteristics. Retention contributes to maintenance of the final orthodontic results. World J Orthod 2010;11:61-66. |
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Authors:
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Nair Galvao Maia; Antonio David Correa Normando; Francisco Ajalmar Maia; Maria Angela Fernandes Ferreira; Maria Socorro Costa Feitosa Alves |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: World journal of orthodontics Volume: 11 ISSN: 1941-6741 ISO Abbreviation: World J Orthod Publication Date: 2010 |
Date Detail:
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Created Date: 2010-03-08 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100959981 Medline TA: World J Orthod Country: United States |
Other Details:
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Languages: eng Pagination: 61-6 Citation Subset: D; IM |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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