Abstract
An: 2019, Nr.1, Articol Nr. 11
Title: 

CORRELATIONS BETWEEN OCLUZAL STRESS AND THE OCCURENCE OF ABFRACTION LESIONS

Authors: 

      Dorelia Lucia Călin - “Grigore T. Popa” University of Medicine şi Pharmacy, Iaşi, Discipline of Cariology and Restorative Odontotherapy
      CORRELATIONS BETWEEN OCLUZAL STRESS AND THE OCCURENCE OF ABFRACTION LESIONS (Abstract): Dental abfraction is caused by the eccentric occlusal forces that lead to dental flexion. The purpose of this study is to determine the relationship between occlusal stress, the presence of occlusal facets of wear and the appearance of abfraction lesions. Material and Method: The study comprised 23 (15 males and 8 females) of patients who underwent 145 abfraction lesions at the clinical examination. Depending on their location, it was found that 83 were juxtagingival and 62 were subgingival. Of the total, 26 lesions were grade 2, 75 lesions of grade 3, and 44 lesions of grade 4 according to Smith and Knight teeth wear index. Results: Of the 145 lesions, 109 (75%) presented wear facets. With regard to the traumatic etiology of occlusions, the following were observed: premature contacts in 25 lesions (23%), occlusal interferences in 32 lesions (29%) and ultimately bruxism in 52 lesions (48%). Conclusions: In our study, a high percentage of occlusal wear facets were found in teeth presenting abfraction lesions, indicating a close link between occlusal stress and the occurrence of these lesions.
Key words: OCCLUSAL STRESS, ABFRACTION, WEAR FACETS
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