Ab Halim Noorhazayti, Esa Rashidah, Chew Hooi Pin
Dental Public Health, Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan Campus, 25200, Kuantan, Pahang, Malaysia.
Department of Community Oral Health & Clinical Prevention, Faculty of Dentistry, University of Malaya, 50603, Kuala Lumpur, Malaysia.
BMC Oral Health. 2018 Jan 12;18(1):11. doi: 10.1186/s12903-017-0451-9.
The objective of this study was to determine the prevalence and severity of general tooth wear (GTW), i.e. tooth wear irrespective of etiology and erosive tooth wear (ETW), i.e. tooth wear predominantly due to erosion; and also to investigate the relationship between ETW and dental caries experience in 16-year-old adolescents in Kuantan, Malaysia.
A multi-staged cluster sampling method was employed. A total of 598 16-year-old adolescents participated in this study. Participants' demographic profile was assessed through a self-administered questionnaire. Clinical examinations were carried out under standardized conditions by a single examiner. The level of GTW was recorded using the modified Smith and Knight's Tooth Wear Index (TWI) whilst ETW were recorded using the Basic Erosive Wear Examination (BEWE) index. This index was developed to record clinical findings and assist in the decision-making process for the management of erosive tooth wear. Dental caries was recorded using the DMFT index whereby D denotes obvious dental decay into dentine detected visually.
The prevalence of GTW, ETW and dental caries, i.e. percentage of individuals found to have at least one lesion, was 99.8%, 45.0% and 27.8% respectively. Two thirds of affected teeth with GTW were observed to have a TWI score of 1 whereas almost all of the affected teeth with ETW had a BEWE score of 2. The mean DMFT was 0.62 (95% CI 0.50, 0.73) with Decayed (D) teeth being the largest component, mean DT was 0.36 (95% CI 0.30, 0.43). There was no significant association between socio-demographic factors and prevalence of ETW. Logistic regression analysis also showed no significant relationship between the prevalence of ETW and DMFT (p > 0.05).
Almost all adolescents examined had GTW but they were mainly early lesions. However, nearly half were found to have ETW of moderate severity (BEWE score 2). No significant relationship between the occurrence of erosive tooth wear and caries was observed in this population.
本研究的目的是确定一般牙齿磨损（GTW），即不论病因的牙齿磨损，以及侵蚀性牙齿磨损（ETW），即主要由侵蚀导致的牙齿磨损的患病率和严重程度；并调查马来西亚关丹16岁青少年中ETW与龋齿经历之间的关系。
采用多阶段整群抽样方法。共有598名16岁青少年参与了本研究。通过自填问卷评估参与者的人口统计学特征。由一名检查者在标准化条件下进行临床检查。使用改良的史密斯和奈特牙齿磨损指数（TWI）记录GTW水平，而使用基本侵蚀性磨损检查（BEWE）指数记录ETW。该指数用于记录临床发现并协助侵蚀性牙齿磨损管理的决策过程。使用DMFT指数记录龋齿情况，其中D表示通过视觉检测到的明显牙本质龋。
GTW、ETW和龋齿的患病率，即发现至少有一处病变的个体百分比，分别为99.8%、45.0%和27.8%。观察到三分之二患有GTW的患牙TWI评分为1，而几乎所有患有ETW的患牙BEWE评分为2。平均DMFT为0.62（95%可信区间0.50, 0.73），其中龋坏（D）牙是最大组成部分，平均DT为0.36（95%可信区间0.30, 0.43）。社会人口统计学因素与ETW患病率之间无显著关联。逻辑回归分析也显示ETW患病率与DMFT之间无显著关系（p > 0.05）。
几乎所有接受检查的青少年都有GTW，但主要是早期病变。然而，近一半被发现患有中度严重程度的ETW（BEWE评分为2）。在该人群中未观察到侵蚀性牙齿磨损与龋齿发生之间的显著关系。
