Abstract
Dentists routinely encounter non-carious cervical lesions (NCCLs) in daily clinical practices. The dental literature is contradictory regarding the occlusal etiology of NCCLs. NCCL is defined as the loss of dental structure at the cemento–enamel junction, with no association of bacteria. The aim of this study was to evaluate the association of dynamic occlusal factors and dental hygiene practices with NCCLs. In total, 100 participants were selected by the random stratified sampling method, 50 each for control and NCCL groups. Information regarding oral hygiene practices, including frequency, duration, force, and technique of brushing, was recorded. Dynamic occlusal parameters like initial contact, occlusion time (OT), disocclusion time (DT), and center of force were recorded with T-scan analysis. The obtained data were analyzed with Pearson’s correlation and binary logistic regression. We found that 68% of participants in the NCCL group and 31% in the control group utilized the horizontal brushing technique; 46% of NCCL group participants used hard brush against 7% of participants in the control group. The mean OT was 0.727 and 0.516 s for NCCL and control groups, respectively. The OT and left and right lateral DT were strongly related to NCCL, with r-values of 0.661, 0.642, and 0.534, respectively, with p ≤ 0.001. Using a hard toothbrush was found to be associated with NCCL. The NCCL group had extended mean occlusion time and disocclusion time in all eccentric mandibular movements.
Highlights
Tooth structure loss at the cemento–enamel junction (CEJ), with no involvement of bacteria, is referred to as non-carious cervical lesions (NCCLs) [1]
We found that 68 % of NCCL subjects used the horizontal brushing technique compared to 31%
An average brushing duration of 2–3 minutes was recorded in 88% of the control group and 81% of the NCCL group
Summary
Tooth structure loss at the cemento–enamel junction (CEJ), with no involvement of bacteria, is referred to as non-carious cervical lesions (NCCLs) [1]. NCCLs present as shallow or deep depressions, disc- or wedge-shaped defects at the CEJ. The clinicians encounter NCCLs routinely, and previous studies report large variation in their prevalence in different populations [2]. Borcic et al [3]. Reported 13% of dentists encountered cervical C-shaped lesion. Bergstrom et al [4] found. 85% of patients had a various degree of cervical tooth loss. Hand et al [5] reported an overall prevalence of NCCLs corresponding to 56 %, and Oginni et al [6] found 62.3% of their studied
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