Evaluation of the relationship between non-caries cervical lesions and the tooth and periodontal tissue: An ex-vivo study using micro-computed tomography

Abstract

The purpose of this study was to analyze the relationship between the height and depth of buccal non-carious cervical lesions (NCCLs) and the relationship between the size of buccal NCCLs and clinical crown-root ratio of both buccal and lingual (palatal) sides using micro-computed tomography (micro-CT) images of the teeth and periodontal tissues from the cadavers. The micro-CT images of 56 teeth and their supporting tissues were obtained from 17 cadavers. From these images, the height and depth of NCCLs and the length of the buccal and lingual (palatal) clinical crowns were measured, and the conventional/modified clinical crown-root ratios were calculated. The height and depth ratio of NCCLs were analyzed statistically with the conventional/modified crown-root ratios by Pearson’s correlation and multiple regression. According to the Pearson’s correlation, the height and depth of buccal NCCLs were positively correlated with the modified buccal clinical crown-root ratio ( p < 0.001 and p = 0.013, respectively). The regression model composed of variables of crown-root ratios explained the height of buccal NCCLs, and the prominent factor of the model was the modified buccal clinical crown-root ratio ( p < 0.001). Moreover, the depth of buccal NCCLs was also explained by the regression model, and its prominent factor was the proportion of modified buccal and lingual (palatal) clinical crowns ( p = 0.004). The buccal NCCLs were related to the crown-root ratios; particularly, the level of buccal gingival margin could be associated with the formation of buccal NCCLs.

The Stresses and Deformations in the Abfraction Lesions of the Lower Premolars Studied by the Finite Element Analyses: Case Report and Review of Literature

“…The dental cracks can be understood as predecessors to the formation of NCCLs, and many researchers have reported an interrelationship between occlusal loads and stress and the development of NCCLs [12,30,33,48,[50][51][52]. Research by Donovan et al [53] indicated that excessive vertical occlusal loads are associated with the progression of all types of NCCLs.…”

Stereomicroscopic Aspects of Non-Carious Cervical Lesions

“…In the specialized literature, there are studies on the morphology, etiology and evolution of NCCLs using various methods of investigation, among which we mention the following: the optical coherence tomography method (OCT) [20][21][22], micro-computed tomography [23,24], and electron microscope examination [25][26][27][28].…”

Percepção dos cirurgiões dentistas sobre o diagnóstico tratamento de lesões cervicais não cariosas na cidade de Patos de Minas

“…Com isso, dos fatores contribuintes com a etiologia, a fricção, de acordo com Lim et al (2020), pode ser dividida em um desgaste fisiológico resultante dos contatos dentários, denominado atrição ou em abrasão, conceituada como a frequente ação de esfregar os elementos dentais com componentes bucais e objetos que não sejam dentes.…”