Movement of mandibular molar into edentulous alveolar ridge: a cone-beam computed tomography study
| Autor: | Daniela Gamba Garib, Francyle Simões Herrera Sanches, Patrícia Bittencourt Dutra dos Santos, Marcos Cezar Ferreira, Ana Lúcia Pompéia Fraga de Almeida, Guilherme Janson |
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| Rok vydání: | 2017 |
| Předmět: |
Adult
Molar Tooth Movement Techniques Dentistry Orthodontics Mandibular first molar 030218 nuclear medicine & medical imaging Mandibular second molar 03 medical and health sciences 0302 clinical medicine stomatognathic system Mandibular second premolar MOVIMENTAÇÃO DENTÁRIA Bone plate Alveolar Process Premolar Alveolar ridge Humans Jaw Edentulous Medicine Mandibular lateral incisor business.industry 030206 dentistry Cone-Beam Computed Tomography stomatognathic diseases medicine.anatomical_structure business |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | Introduction The purpose of this study was to evaluate the thickness and height of buccal and lingual alveolar bone of mandibular teeth moved to edentulous areas with a remodeled alveolar ridge. Methods The sample included 18 adult patients with unilateral or bilateral absence of mandibular permanent first molars with a mean age of 36.1 years before treatment. The mandibular hemiarches were divided into 3 groups: reopening group (15 hemiarches), closure group (12 hemiarches), and control group (9 hemiarches with no missing teeth). Cone-beam computed tomography scans with a 0.2-mm voxel size were performed 4 months after space closure or reopening. Cross sections 0.2 mm thick passing through the center of the mandibular permanent second molar and second premolar roots were used for measurements of the buccal and lingual bone plate thickness and level. Intergroup comparisons were performed with 1-way analysis of variance followed by Tukey tests ( P Results No intergroup differences were found for the alveolar bone statuses of the mandibular second premolar. For the mandibular second molar, the closing group showed significantly smaller buccal and lingual crest levels compared with the control group. Conclusions Space closure of missing mandibular first molars caused slight buccal and lingual dehiscences at the mandibular second molar areas. |
| Databáze: | OpenAIRE |
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