Marcelo Lelis Zuppardo1, Camila Lopes Ferreira1, Nicole Berton de Moura1, Mariellen Longo1, Milton Santamaria2, Sergio Lucio Pereira Castro Lopes1, Mauro Pedrine Santamaria1, Maria Aparecida Neves Jardini3. 1. Department of Diagnosis and Surgery, School of Sciences and Technology, São Paulo State University (UNESP), Eng. Francisco José Longo Ave. 777, São José dos Campos, SP, 12245-000, Brazil. 2. Graduate Program of Orthodontics and Graduate Program of Biomedical Sciences, Heminio Ometto University Center, UNIARARAS, Araras, Brazil. 3. Department of Diagnosis and Surgery, School of Sciences and Technology, São Paulo State University (UNESP), Eng. Francisco José Longo Ave. 777, São José dos Campos, SP, 12245-000, Brazil. jardini@ict.unesp.br.
Abstract
INTRODUCTION: To quantify the rate of tooth movement in two corticotomy protocols in an experimental model in rats through macroscopic and radiographic analysis. METHODS: The animals were divided into three groups: orthodontic movement (CO), orthodontic movement plus corticotomy surgery (G2), and orthodontic movement and corticotomy surgery with decorticalization (G3).The euthanasia occurred in 7 and 14 days. The data were statistically analyzed (p < 0.05). RESULTS: The CO presented lower distance between the mesial surface of the first molar and the distal surface of the third molar when compared to the G2 (6.96 ± 0.24, p = 0.009) and G3 (6.93 ± 0.18, p = 0.016) in the macroscopic analysis. In the 7 days, there was no statistically significant radiographic difference between the three groups: CO(0.94 ± 0.21 mm2), G2(1.05 ± 0,27 mm2), and G3(1.08 ± 0.27 mm2).There was a statistically significant difference between CO (0.87 ± 0.12 mm2), G2 (1.00 ± 0.12 mm2), and G3 (1.11 ± 0.14 mm2) at 14 days. There was a statistically significant linear difference between the groups in all periods. CONCLUSION: Tooth movement and the region of interest were influenced by corticotomy, regardless of the surgical technique in the 14 days.
INTRODUCTION: To quantify the rate of tooth movement in two corticotomy protocols in an experimental model in rats through macroscopic and radiographic analysis. METHODS: The animals were divided into three groups: orthodontic movement (CO), orthodontic movement plus corticotomy surgery (G2), and orthodontic movement and corticotomy surgery with decorticalization (G3).The euthanasia occurred in 7 and 14 days. The data were statistically analyzed (p < 0.05). RESULTS: The CO presented lower distance between the mesial surface of the first molar and the distal surface of the third molar when compared to the G2 (6.96 ± 0.24, p = 0.009) and G3 (6.93 ± 0.18, p = 0.016) in the macroscopic analysis. In the 7 days, there was no statistically significant radiographic difference between the three groups: CO(0.94 ± 0.21 mm2), G2(1.05 ± 0,27 mm2), and G3(1.08 ± 0.27 mm2).There was a statistically significant difference between CO (0.87 ± 0.12 mm2), G2 (1.00 ± 0.12 mm2), and G3 (1.11 ± 0.14 mm2) at 14 days. There was a statistically significant linear difference between the groups in all periods. CONCLUSION:Tooth movement and the region of interest were influenced by corticotomy, regardless of the surgical technique in the 14 days.
Entities:
Keywords:
Animal model; Corticotomy surgery; Decorticalization; Orthodontic movement
Authors: M Thomas Wilcko; William M Wilcko; Jeffrey J Pulver; Nabil F Bissada; Jerry E Bouquot Journal: J Oral Maxillofac Surg Date: 2009-10 Impact factor: 1.895
Authors: Payam A Sanjideh; P Emile Rossouw; Phillip M Campbell; Lynne A Opperman; Peter H Buschang Journal: Eur J Orthod Date: 2009-09-07 Impact factor: 3.075