Three-dimensional mandibular dental changes with aging

Autor(es)

Garib, Daniela ^{[1, 2]} ; Miranda, Felicia ^[2] ; Massaro, Camila ^[2] ; Lauris, Jose Roberto Pereira ^[3] ; Yatabe, Marilia Sayako ^[4] ; Janson, Guilherme ^[2] ; McNamara Jr, James A. ; Behrents, Rolf G. ^[5] ; Cevidanes, Lucia H. S. ^[6] ; Ruellas, Antonio Carlos de Oliveira ^{[6, 7]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Hosp Rehabil Craniofacial Anomalies, Bauru, SP - Brazil

^[2] Univ Sao Paulo, Bauru Dent Sch, Dept Orthodont, Alameda Octavio Pinheiro Brisolla 9-75, BR-17012901 Bauru, SP - Brazil

^[3] Univ Sao Paulo, Bauru Dent Sch, Dept Publ Hlth, Discipline Stat, Bauru, SP - Brazil

^[4] Univ Michigan, Sch Dent, Dept Orthodont & Pediat Dent, Ann Arbor, MI 48109 - USA

^[5] St Louis Univ, Ctr Adv Dent Educ, Orthodont Program, St Louis, MO 63103 - USA

^[6] McNamara Jr, Jr., James A., Univ Michigan, Sch Dent, Dept Orthodont & Pediat Dent, Ann Arbor, MI 48109 - USA

^[7] Univ Fed Rio de Janeiro, Sch Dent, Dept Orthodont & Pediat Dent, Rio De Janeiro, RJ - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS; v. 159, n. 2, p. 184-192, FEB 2021.
• Citações Web of Science: 0

Resumo

Introduction: This study aimed to evaluate the 3-dimensional (3D) mandibular dental changes over 42 years using the registration of digital models. Methods: The sample comprised digital dental models of 8 untreated subjects (4 males and 4 females) with normal occlusion measured longitudinally at ages 17 years (T1) and 60 years (T2). Using 13 landmarks placed on the mucogingival junction, we registered the T2 model on the T1 model. Three-dimensional changes in the position of the landmarks on the buccal cusp tip of the posterior teeth and incisal edge of the central incisors were measured by 2 examiners. Registration and measurements were performed using SlicerCMF (version 3.1; http://www.slicer.org) software. Intraand interrater agreements were evaluated using intraclass correlation coefficients and the Bland-Altman method. One-sample ttests were used for evaluating interphase 3D dental changes (P<0.05). Results: Adequate intraand interrater reproducibility was found. From T1 to T2, the mandibular teeth showed significant 3D positional changes. A significant dental eruption relative to the mucogingival junction was observed for the anterior and posterior teeth. Anteroposterior movements of mandibular teeth were not significant except for the right molar that drifted mesially. Transverse movements included slight lingual tipping at canines and premolars regions. Conclusions: Dental changes in untreated normal occlusion were very slight from early to mature adulthood. The eruption of the mandibular teeth was the most consistent finding. A tendency for mesial movement of molars and lingual movement of first premolars and canines was observed in the mandible during the aging process. (AU)

• Processo FAPESP: 16/11400-8 - Alterações tridimensionais da oclusão normal da adolescência à sexta década de vida: avaliação por meio do registro de modelos dentários digitais
• Beneficiário: Daniela Gamba Garib Carreira
• Modalidade de apoio: Bolsas no Exterior - Pesquisa