乳牙列中咬合力与牙合力分布的关系。

Relation between clenching strength and occlusal force distribution in primary dentition.

作者信息

Karibe H, Ogata K, Hasegawa Y, Ogihara K

机构信息

Department of Paediatric Dentistry, Nippon Dental University, Tokyo, Japan.

出版信息

J Oral Rehabil. 2003 Mar;30(3):307-11. doi: 10.1046/j.1365-2842.2003.01018.x.

DOI:10.1046/j.1365-2842.2003.01018.x

PMID:12588505

Abstract

The aim of this study was to investigate the relation between clenching strength and occlusal force distribution in primary dentition. Twenty healthy children with normal occlusions: 11 boys and 9 girls, ages 3.2-5.8 years (avg. 4.5 years) were selected. Setting the bilateral masseter muscular activity at maximum clenching in full intercuspation as 100%, the occluding forces at 20, 40, 60, 80 and 100% clenching were recorded with pressure-sensitive sheets (Dental Prescale 50H, type R, Fuji Photo Film Co.), and the force of each primary tooth was analysed by computer (Occluzer FPD703). Occlusal force distribution was expressed as a percentage of the total occlusal force of each tooth and was compared between each clenching. There were no significant differences between various clenching strengths in the occlusal force distribution in primary dentition [one-way repeated-measures analysis of variance (ANOVA)]. Thus, the results of the present study suggest that the distribution of occluding forces on a primary dental arch had its own pattern and that the clenching strength had no effect on that pattern. These patterns may be useful in determining occlusal function in children.

摘要

本研究旨在探讨乳牙列咬合力与咬肌力量之间的关系。选取20名咬合正常的健康儿童：11名男孩和9名女孩，年龄在3.2 - 5.8岁（平均4.5岁）。将双侧咬肌在完全咬合时最大紧咬状态下的肌肉活动设定为100%，使用压敏片（富士胶片公司生产的Dental Prescale 50H，R型）记录20%、40%、60%、80%和100%紧咬时的咬合力，并通过计算机（Occluzer FPD703）分析每颗乳牙的咬合力。咬合力分布以每颗牙齿总咬合力的百分比表示，并在每次紧咬之间进行比较。乳牙列咬合力分布在不同紧咬强度之间无显著差异[单向重复测量方差分析（ANOVA）]。因此，本研究结果表明，乳牙弓上咬合力的分布有其自身模式，且紧咬强度对该模式无影响。这些模式可能有助于确定儿童的咬合功能。