文档介绍：磨牙症(Bruxism)
磨牙症(Bruxism)
磨牙症(Bruxism)
“To grind the teeth, a clenching of the teeth, associated with forceful jaw movements, resulting in rubbing, gritting, or grinding together of the teeth, usually during sleep.”
人在非生理功能状态下咀嚼肌产生不自主的收缩,使上下颌牙产生彼此磨动或紧咬,使下颌生理休息位中断的现象,属副功能运动(Parafunction)。
分类
时间:
白天磨牙
夜磨牙
牙齿接触类型:
紧咬牙---正中磨牙症
磨动牙齿---非正中磨牙症
%~% 青少年多见
Approximately 50% to 96% of adults experience bruxism
15% of children acquire this behavior.
% (陈玉琴,2004)
Higher rates in patients with mental retardation and OSA
Self reporting underestimates prevalence
Asking bed partner is a more reliable indicator
Most accurate estimate of bruxism is elicited from the direct dental examination
Prevalence increases to 10 - 20 % of the general examination ( Dental literature )
M = F, some reports: F > M
Familial pattern
第一节磨牙症的病因
1. 牙合因素
2. 精神、神经因素
3. 咀嚼系统的神经肌肉功能紊乱
4. 内分泌与药物因素
5. 遗传因素
6. 局部刺激因素
7. 磨牙症与牙周炎
8. 其他
病因
牙合干扰:RCP与ICP间牙合干扰
非工作侧牙合干扰
早接触
长期缺牙
不良修复体
单侧咀嚼
其他