Rios Daniela, Magalhães Ana Carolina, Honório Heitor Marques, Buzalaf Marília Afonso Rabelo, Lauris José Roberto Pereira, Machado Maria Aparecida Andrade Moreira
Department of Pediatric Dentistry, Maringa University Center - CESUMAR, Bauru-SP 17017-471, Brazil.
Oral Health Prev Dent. 2007;5(3):167-71.
To evaluate the prevalence and aetiological factors involved with wear of deciduous teeth.
A convenience sample of 356 children (aged 6 years old) was selected at Bauru, SP (Brazil). Clinical examinations were carried out by 1 examiner (Kappa = 0.87), using the Tooth Wear Index (G0-G4). A questionnaire addressing the aetiological factors of tooth wear was applied to parents.
Wear on the incisors was diagnosed in 34.8% of children (91.1% G1 and 6.4% G2); 78.1% presented wear in canines (64.7% G1 and 33.1% G2); and 40.7% in molars (89.6% G1 and 9.0% G2). No significant correlation was observed between gastro-oesophageal reflux, toothbrushing habits, or consumption of citrus fruits/soft drinks and the presence of tooth wear for all groups of teeth. The wear showed correlation with the presence of bruxism for canines and with the habit of holding drinks in the mouth before swallowing for incisors (Chi-square test, p < 0.05).
The findings indicate that the wear of incisors could be considered physiological for this age. Further longitudinal studies should be conducted in order to measure the wear in canines and molars in the period close to their replacement by permanent teeth.
评估乳牙磨损的患病率及相关病因。
在巴西圣保罗州包鲁市选取了356名6岁儿童作为便利样本。由1名检查者（卡帕值 = 0.87）使用牙齿磨损指数（G0 - G4）进行临床检查。向家长发放了一份关于牙齿磨损病因的问卷。
34.8%的儿童被诊断出切牙有磨损（91.1%为G1级，6.4%为G2级）；78.1%的儿童尖牙有磨损（64.7%为G1级，33.1%为G2级）；40.7%的儿童磨牙有磨损（89.6%为G1级，9.0%为G2级）。在所有牙组中，未观察到胃食管反流、刷牙习惯或柑橘类水果/软饮料的摄入量与牙齿磨损之间存在显著相关性。磨损与尖牙的磨牙症以及切牙在吞咽前将饮料含在口中的习惯存在相关性（卡方检验，p < 0.05）。
研究结果表明，这个年龄段切牙的磨损可被视为生理性的。应进行进一步的纵向研究，以测量尖牙和磨牙在恒牙替换前这段时间的磨损情况。
