Changes in skeletal and dental relationship in Class II Division I malocclusion after rapid maxillary expansion: a prospective study
OBJECTIVE: To assess skeletal and dental changes immediately after rapid maxillary expansion (RME) in Class II Division 1 malocclusion patients and after a retention period, using cone beam computed tomography (CBCT) imaging. METHODS: Seventeen children with Class II, Division 1 malocclusion and max...
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| Format: | Article |
| Language: | English |
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Dental Press Editora
2014-06-01
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| Series: | Dental Press Journal of Orthodontics |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000300075&lng=en&tlng=en |
| _version_ | 1811249103566274560 |
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| author | Carolina Baratieri Matheus Alves Jr Ana Maria Bolognese Matilde C. G. Nojima Lincoln I. Nojima |
| author_facet | Carolina Baratieri Matheus Alves Jr Ana Maria Bolognese Matilde C. G. Nojima Lincoln I. Nojima |
| author_sort | Carolina Baratieri |
| collection | DOAJ |
| description | OBJECTIVE: To assess skeletal and dental changes immediately after rapid maxillary expansion (RME) in Class II Division 1 malocclusion patients and after a retention period, using cone beam computed tomography (CBCT) imaging. METHODS: Seventeen children with Class II, Division 1 malocclusion and maxillary skeletal transverse deficiency underwent RME following the Haas protocol. CBCT were taken before treatment (T1), at the end of the active expansion phase (T2) and after a retention period of 6 months (T3). The scanned images were measured anteroposteriorly (SNA, SNB, ANB, overjet and MR) and vertically (N-ANS, ANS-Me, N-Me and overbite). RESULTS: Significant differences were identified immediately after RME as the maxilla moved forward, the mandible moved downward, overjet increased and overbite decreased. During the retention period, the maxilla relapsed backwards and the mandible was displaced forward, leaving patients with an overall increase in anterior facial height. CONCLUSION: RME treatment allowed more anterior than inferior positioning of the mandible during the retention period, thus significantly improving Class II dental relationship in 75% of the patients evaluated. |
| first_indexed | 2024-04-12T15:39:32Z |
| format | Article |
| id | doaj.art-fde34976ba24448286bc40372135cbca |
| institution | Directory Open Access Journal |
| issn | 2177-6709 |
| language | English |
| last_indexed | 2024-04-12T15:39:32Z |
| publishDate | 2014-06-01 |
| publisher | Dental Press Editora |
| record_format | Article |
| series | Dental Press Journal of Orthodontics |
| spelling | doaj.art-fde34976ba24448286bc40372135cbca2022-12-22T03:26:51ZengDental Press EditoraDental Press Journal of Orthodontics2177-67092014-06-01193758110.1590/2176-9451.19.3.075-081.oarS2176-94512014000300075Changes in skeletal and dental relationship in Class II Division I malocclusion after rapid maxillary expansion: a prospective studyCarolina BaratieriMatheus Alves JrAna Maria BologneseMatilde C. G. NojimaLincoln I. NojimaOBJECTIVE: To assess skeletal and dental changes immediately after rapid maxillary expansion (RME) in Class II Division 1 malocclusion patients and after a retention period, using cone beam computed tomography (CBCT) imaging. METHODS: Seventeen children with Class II, Division 1 malocclusion and maxillary skeletal transverse deficiency underwent RME following the Haas protocol. CBCT were taken before treatment (T1), at the end of the active expansion phase (T2) and after a retention period of 6 months (T3). The scanned images were measured anteroposteriorly (SNA, SNB, ANB, overjet and MR) and vertically (N-ANS, ANS-Me, N-Me and overbite). RESULTS: Significant differences were identified immediately after RME as the maxilla moved forward, the mandible moved downward, overjet increased and overbite decreased. During the retention period, the maxilla relapsed backwards and the mandible was displaced forward, leaving patients with an overall increase in anterior facial height. CONCLUSION: RME treatment allowed more anterior than inferior positioning of the mandible during the retention period, thus significantly improving Class II dental relationship in 75% of the patients evaluated.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000300075&lng=en&tlng=enExpansão palatalMá oclusão Classe II de AngleEstudo clínico |
| spellingShingle | Carolina Baratieri Matheus Alves Jr Ana Maria Bolognese Matilde C. G. Nojima Lincoln I. Nojima Changes in skeletal and dental relationship in Class II Division I malocclusion after rapid maxillary expansion: a prospective study Dental Press Journal of Orthodontics Expansão palatal Má oclusão Classe II de Angle Estudo clínico |
| title | Changes in skeletal and dental relationship in Class II Division I malocclusion after rapid maxillary expansion: a prospective study |
| title_full | Changes in skeletal and dental relationship in Class II Division I malocclusion after rapid maxillary expansion: a prospective study |
| title_fullStr | Changes in skeletal and dental relationship in Class II Division I malocclusion after rapid maxillary expansion: a prospective study |
| title_full_unstemmed | Changes in skeletal and dental relationship in Class II Division I malocclusion after rapid maxillary expansion: a prospective study |
| title_short | Changes in skeletal and dental relationship in Class II Division I malocclusion after rapid maxillary expansion: a prospective study |
| title_sort | changes in skeletal and dental relationship in class ii division i malocclusion after rapid maxillary expansion a prospective study |
| topic | Expansão palatal Má oclusão Classe II de Angle Estudo clínico |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000300075&lng=en&tlng=en |
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