Abnormal wear patterns in different types of malocclusions

А. Smirnova, O. Gavrilova, K. V. Fedorova, L. N. Sokolova, D. Bobrov
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Abstract

Relevance. Abnormal tooth wear is a disease characterized by excessive loss of hard tissues of the erupted teeth, unrelated to the physiological process. This disease prevalence appears to have increased in recent decades. The literature often indicates malocclusion as the cause of abnormal tooth wear, though it rarely notes the impact of abnormality type on individual teeth.Purpose. The study aimed to establish the relationship between the abnormality type and the degree and nature of abnormal tooth wear in children at different stages of dentition development.Materials and methods. The study analyzed the examination results of 266 patients aged 8 to 18 years without a history of previous orthodontic treatment. The orthodontic diagnosis was made based on the ICD-10. The patients formed the groups according to the stage of dentition development. The tooth wear index (TWI) (only permanent teeth) evaluated the abnormal tooth wear. The maximum TWI score determined the grade of abnormal tooth wear. The study statistically analyzed the data by StatTech v. 2.5.6, compared the data using the Kruskal – Wallis test (ANOVA) and Pearson chi-square, and made post hoc comparisons using Dunn’s test with Holm adjustment. The prognostic model was developed using the linear regression method.Results. The children and adolescents showed a sufficiently high prevalence of abnormal tooth wear (69.2% had at least one tooth with a tooth wear facet), tooth-wear grade increased with age (correlation coefficient rxy = 0.674, p < 0.001). The risk of abnormal tooth wear in distal and deep occlusion appeared to increase at incisors and canines (p < 0.001), in mesial occlusion - molars and premolars, in open bite – molars (p < 0.001). The combination of distal and deep occlusion led to severe abnormal tooth wear.Conclusion. The study results showed that wear patterns differ in various types of malocclusions. The received data will help to develop effective measures to prevent abnormal tooth wear.
不同类型错咬合的异常磨损模式
的相关性。牙齿异常磨损是一种疾病,其特征是牙齿的硬组织过度损失,与生理过程无关。近几十年来,这种疾病的流行率似乎有所增加。文献中经常指出错牙合是导致牙齿异常磨损的原因,但很少注意到异常类型对单个牙齿的影响。本研究旨在建立不同牙列发育阶段儿童牙齿异常磨损程度和性质与异常类型的关系。材料和方法。本研究分析266例8 ~ 18岁无正畸治疗史的患者的检查结果。根据ICD-10进行正畸诊断。患者按牙列发育阶段进行分组。牙齿磨损指数(TWI)(仅恒牙)评价牙齿的异常磨损。TWI评分的最大值决定了牙齿异常磨损的程度。本研究采用StatTech v. 2.5.6对数据进行统计分析,采用Kruskal - Wallis检验(ANOVA)和Pearson卡方进行比较,采用Dunn检验和Holm调整进行事后比较。采用线性回归方法建立了预后模型。儿童和青少年的牙齿异常磨损发生率较高(69.2%至少有一颗牙齿存在磨损小面),且磨损程度随年龄增长而增加(相关系数rxy = 0.674, p < 0.001)。远端咬合和深咬合的牙齿异常磨损的风险在门牙和犬齿中增加(p < 0.001),在近端咬合-磨牙和前磨牙中增加(p < 0.001)。远端牙合与深部牙合的结合导致了严重的牙齿异常磨损。研究结果表明,不同类型错颌的磨损模式不同。接收到的数据将有助于制定有效的措施来防止牙齿异常磨损。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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