Three-dimensional changes in open bite patients treated with bonded spurs associated or not with posterior build-ups: a randomized clinical trial

• Grant number: 18/24003-2
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: July 01, 2019
• End date: December 31, 2019
• Field of knowledge: Health Sciences - Dentistry - Orthodontics
• Principal Investigator: Guilherme dos Reis Pereira Janson
• Grantee: Arón Aliaga Del Castillo
• Supervisor: Lucia Helena Cevidanes
• Host Institution: Faculdade de Odontologia de Bauru (FOB). Universidade de São Paulo (USP). Bauru , SP, Brazil
• Institution abroad: University of Michigan, United States
• Associated to the scholarship: 17/06440-3 - Anterior open bite treatment with bonded spurs associated with build-ups versus conventional bonded spurs: a randomized clinical trial, BP.DR

Abstract

Introduction: Anterior open bite is commonly related with increased vertical dimension. Some early treatment protocols consider the association of appliances that eliminate the deleterious habits with others that produce vertical control of posterior teeth. Superimposition of digital models has been used to assess the three-dimensional effects of orthodontic treatment in some malocclusions. Nevertheless, the use of this method in anterior open bite treatment evaluation has not been reported. Objective: The aim of this study is to compare the three-dimensional changes in anterior open bite patients treated with bonded spurs associated or not with posterior build-ups. Material and Methods: Fifty patients between 7 and 11 years old with anterior open bite were prospectively and randomly allocated to one of the two treatment groups. The Experimental Group comprised 25 patients treated with lingual bonded spurs associated with posterior build-ups, and the Control Group comprised 25 patients treated only with lingual bonded spurs. Digital models, acquired by intraoral scanning, were obtained at the beginning (T1) and after 12 months of treatment (T2). Superimpositions of T1 and T2 digital dental models will be performed in 3D SlicerCMF software, based on points and regions of interest. Three-dimensional linear distances and the amount of directional changes in each plane of 3D space (x, y, and z: mediolateral, anteroposterior and superoinferior axes, respectively) will be measured. Intraclass correlation coefficients (ICC) and Bland Altman tests will be used to assess reproducibility. After verifying sample´s normal distribution, intergroup comparisons will be performed with t test (P<0.05).

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ALIAGA-DEL CASTILLO, ARON; VILANOVA, LORENA; MIRANDA, FELICIA; ARRIOLA-GUILLEN, LUIS ERNESTO; GARIB, DANIELA; JANSON, GUILHERME. Dentoskeletal changes in open bite treatment using spurs and posterior build-ups: A randomized clinical trial. AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, v. 159, n. 1, p. 10-20, JAN 2021. (18/05238-9, 18/24003-2, 17/06440-3)

ALIAGA-DEL CASTILLO, ARON; JANSON, GUILHERME; VILANOVA, LORENA; CEVIDANES, LUCIA; YATABE, MARILIA; GARIB, DANIELA; ARRIOLA-GUILLEN, LUIS ERNESTO; MIRANDA, FELICIA; MASSARO, CAMILA; BELLINI-PEREIRA, SILVIO AUGUSTO; et al. Three-dimensional dentoalveolar changes in open bite treatment in mixed dentition, spurs/posterior build-ups versus spurs alone: 1-year follow-up randomized clinical trial. SCIENTIFIC REPORTS, v. 12, n. 1, p. 12-pg., 2022-07-20. (17/06440-3, 18/05238-9, 18/24003-2)