Mesiodistal dental movement toward remodeled edentulous alveolar ridge: digital model assessment
| Autor: | Daniela Gamba Garib, Guilherme Janson, Patrícia Bittencourt Dutra dos Santos, Francyle Simões Herrera Sanches, José Fernando Castanha Henriques, Marcos Cezar Ferreira, Karina Maria Salvatore de Freitas |
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| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Molar Tooth Movement Techniques medicine.medical_treatment Dentistry Orthodontics Mandibular first molar Crown (dentistry) Mandibular second molar 03 medical and health sciences Posterior Tooth 0302 clinical medicine stomatognathic system Radiography Panoramic Alveolar Process medicine Alveolar ridge Humans 030212 general & internal medicine Uprighting business.industry Jaw Edentulous Partially Tooth Migration 030206 dentistry Models Dental BOCA EDENTADA stomatognathic diseases Posterior teeth Female business |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | Introduction The aims of this study were to compare the changes in posterior dental inclination and angulation, and the posterior tooth crown sizes and alveolar ridge thicknesses consequent to the orthodontic procedures of closing and opening of mandibular first molar edentulous spaces. Methods The sample comprised 16 patients (4 men, 12 women) with an initial mean age of 34.17 years and unilateral or bilateral absence of mandibular permanent first molars. The space closure group (SCG) comprised 12 hemiarches with a mandibular first molar edentulous space varying from 2 to 7 mm, orthodontically treated with space closure. The space opening group (SOG) comprised 14 quadrants with a mandibular first molar edentulous space varying from 7.1 to 12 mm, orthodontically treated with space reopening for prosthetic replacement. Digital dental models were obtained before treatment and after space closure or opening, and posterior tooth angulation and inclination, cervico-occlusal crown height, and alveolar ridge thickness were evaluated. Interphase and intergroup comparisons were performed with dependent t tests and t tests, respectively ( P Results Mandibular second molar uprighting and changes in buccolingual inclination of the posterior teeth were similar in the groups. The second molar cervico-occlusal crown height increased in the SCG and decreased in the SOG. The alveolar ridge thickness increased in the SCG and remained stable in the SOG. Conclusions The only significant intergroup differences were that the second molar cervico-occlusal crown height and the alveolar ridge thickness increased in the SCG, and decreased and remained stable in the SOG. |
| Databáze: | OpenAIRE |
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