Tago Chikataka, Aoki Satoshi, Sato Sadao
a General Dentistry AOKI , Tokyo , Japan.
b Department of Craniofacial Growth and Development , Kanagawa Dental University , Kanagawa , Japan.
Cranio. 2018 May;36(3):167-173. doi: 10.1080/08869634.2017.1295125. Epub 2017 Feb 24.
Bruxism-induced mechanical load causes various dental problems, and its treatment is challenging. The present study analyzed upper and lower tooth contacts to determine actual occlusal contact during sleep bruxism.
Tooth contact patterns were analyzed in 49 patients attending dental clinics, using a Bruxchecker®, cephalograms, and condylographs.
Approximately 80% of individuals demonstrated contact from the anterior teeth to the molar region (ICPM); about 96% had mediotrusive grinding and contact. The tooth contact area increased with the flatness of the anterior occlusal plane. The ratio of the contact area of the anterior teeth to the overall tooth contact area increased with overbite. Bilateral ICPM and mediotrusive contact patterns were associated with a high frequency of temporomandibular disorder symptoms, clicking, and/or pain.
The tooth contact area, anterior occlusal plane, and overbite are closely related, suggesting that tooth contact with the anterior teeth should be controlled with occlusal therapy.
磨牙症引起的机械负荷会导致各种牙齿问题，其治疗具有挑战性。本研究分析了上下牙齿接触情况，以确定睡眠磨牙症期间的实际咬合接触。
使用磨牙症检查仪、头颅侧位片和髁突描记仪，对49名到牙科诊所就诊的患者的牙齿接触模式进行了分析。
约80%的个体表现出从前牙到磨牙区的接触（ICP-M）；约96%的个体有侧方磨耗和接触。牙齿接触面积随着前牙咬合平面的平坦度增加而增大。前牙接触面积与总牙齿接触面积的比值随着覆合增加而增大。双侧ICP-M和侧方接触模式与颞下颌关节紊乱症状、弹响和/或疼痛的高发生率相关。
牙齿接触面积、前牙咬合平面和覆合密切相关，这表明应通过咬合治疗来控制前牙的牙齿接触。
