Comparison of tooth movement and biological response in corticotomy and micro-osteoperforation in rabbits
10.4041/kjod.2019.49.4.205
- Author:
Junghan KIM
1
;
Yoon Ah KOOK
;
Mohamed BAYOME
;
Jae Hyun PARK
;
Won LEE
;
Hojae CHOI
;
Noha H ABBAS
Author Information
1. Graduate School, The Catholic University of Korea, Seoul, Korea.
- Publication Type:Original Article
- From:The Korean Journal of Orthodontics
2019;49(4):205-213
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE:The aim of this study was to evaluate the amount of tooth movement and histologic changes with different corticotomy designs and micro-osteoperforation in rabbits.
METHODS:The sample consisted of 24 rabbits divided into three experimental groups (triangular corticotomy [TC] and indentation corticotomy [IC] with flap, and flapless micro-osteoperforations [MP]) and a control. A traction force of 100 cN was applied by connecting the first premolars to the incisors. The amount of tooth movement was measured. Kruskal-Wallis test was used to assess differences in tooth movement between the groups. Micro-computed tomography, hematoxylin and eosin staining, and tartrate-resistant acidic phosphatase (TRAP) analysis were performed. Analysis of variance was applied to assess differences in TRAP-positive osteoclast count between the groups.
RESULTS:The amount of tooth movement increased by 46.5% and 32.0% in the IC and MP groups, respectively, while the bone fraction analysis showed 69.7% and 8.5% less mineralization compared to the control. There were no significant intergroup differences in the number of TRAP-positive osteoclasts.
CONCLUSIONS:The micro-osteoperforation group showed no significant differences in the amount of tooth movement compared to the corticotomy groups, nor in the TRAP-positive osteoclast count compared to both corticotomy groups and control.
