Clinical presentation of two phenotypes of tooth wear patients

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  • Wedad Hammoudi, Folktandvården Eastmaninstitutet, Karolinska Institutet
  • ,
  • Mats Trulsson, Karolinska Institutet, Scandinavian Centre for Orofacial Neuroscience (SCON)
  • ,
  • Jan Ivan Smedberg, Folktandvården Eastmaninstitutet, Karolinska Institutet
  • ,
  • Peter Svensson

Objective: To assess the clinical presentation of wear lesions in two phenotypes of tooth wear (TW) patients based on distribution and morphological features of wear. Materials and methods: 103 patients (mean age = 43.1 years) were divided into two groups based on cluster analysis; cluster A (61 patients) and cluster B (42 patients). The distribution of wear lesions, scores of presence or absence of 10 defined morphological TW criteria and number of teeth fulfilling each criteria were compared between groups. Intra- and inter-examiner reliability of the 10 TW criteria was determined by Cohen's kappa and intraclass correlation coefficient. Results: While cluster A had more wear in maxillary anterior teeth and mandibular molars compared with the same opposing tooth groups (p < 0.001, p < 0.007 respectively), there were no differences for cluster B. Cluster A was characterized by higher prevalence of 4 chemical morphological criteria and the highest number of teeth affected by one chemical criteria, whereas cluster B had a higher prevalence of one mechanical criteria and higher number of teeth affected by an additional mechanical criteria. Both intra- and inter-examiner values for the defined TW criteria were fair to excellent. Conclusion: The results may indicate a more chemical background for TW in cluster A and mechanical background in cluster B. Furthermore, clinicians may use certain clinical features of TW to distinguish between individuals who belong to a specific TW cluster with a presumed chemical or mechanical etiology. These preliminary findings need to be confirmed in future studies.

TidsskriftJournal of Dentistry
Sider (fra-til)60-68
Antal sider9
StatusUdgivet - jul. 2019

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