咬合支持与上颌骨发育的关系：一项动物研究。
The relationship between occlusal support and maxillary development: An animal study.
作者信息
Da Costa Fabricio F, Santos Gabriela S M Q, Farias-Neto Arcelino, Sanchez-Ayala Alfonso, Rizzatti-Barbosa Célia M
机构信息
Department of Dentistry, Health School, Potiguar University - Laureate International Universities, Natal, RN, Brazil.
Department of Dentistry, Ponta Grossa State University, School of Dentistry, Ponta Grossa, Paraná, Brazil.
出版信息
Eur J Dent. 2015 Jul-Sep;9(3):400-403. doi: 10.4103/1305-7456.163230.
OBJECTIVE
To test the hypothesis that maxillary development may be affected by occlusal support.
MATERIALS AND METHODS
The sample was composed by Wistar rats (5 weeks old) divided into three groups: Control (n = 10), extraction of mandibular molar teeth - left side (n = 10), extraction mandibular molar teeth - left and right sides (n = 10). The rats were sacrificed 8 weeks postextraction. Cone beam computed tomography scan images were taken for posterior measurement of maxillary length and width. Data were analyzed by one-way analysis of variance (Tukey test as post-hoc test).
RESULTS
Maxillary length was significantly shorter (P < 0.005) in both groups after tooth extraction. No difference was observed regarding maxillary width and body weight.
CONCLUSION
Reduced occlusal support may impair the development of the maxilla in rats.
目的
验证上颌骨发育可能受咬合支持影响这一假说。
材料与方法
样本由5周龄的Wistar大鼠组成，分为三组：对照组（n = 10）、拔除左侧下颌磨牙组（n = 10）、拔除左右两侧下颌磨牙组（n = 10）。拔牙后8周处死大鼠。采用锥形束计算机断层扫描获取图像，用于上颌骨长度和宽度的后部测量。数据采用单因素方差分析（Tukey检验作为事后检验）进行分析。
结果
拔牙后两组的上颌骨长度均显著缩短（P < 0.005）。在上颌骨宽度和体重方面未观察到差异。
结论
咬合支持减少可能会损害大鼠上颌骨的发育。
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