STATEMENT OF PROBLEM: The etiology (chemical, friction, abfraction) of noncarious @entity75 (NCCL) progression is poorly understood. PURPOSE: The purpose of this 5-year prospective clinical trial was to measure the relationship between NCCLs and various etiologic factors. MATERIAL AND METHODS: After review board approval, 29 @entity1 with NCCLs were enrolled. @entity11945 impressions were made of each NCCL, and casts were poured at baseline, 1, 2, and 5 years. The casts were scanned with a noncontact profilometer, and 1-, 2-, and 5-year scans were superimposed over baseline scans to measure volumetric change in NCCLs. T-scan and Fujifilm Prescale films were used to record relative and absolute occlusal forces on teeth with NCCLs at the 5-year recall. @entity1 diet, medical condition, toothbrushing, and adverse oral habit questionnaires were given at the 5-year recall. Occlusal analysis was completed on mounted casts to determine the presence of wear facets and group function. Volumetric lesion progression from 1 to 5 years was correlated to absolute and relative occlusal force using mixed model analysis. The Kruskall-Wallis and Mann-Whitney analyses compared lesion progression with diet, medical condition, toothbrushing, adverse oral habits, wear facets, and group function. RESULTS: The NCCL progression rate over 5 years was 1.50   0.92 mm(3)/yr. The rate of progression of NCCLs was related to mean occlusal stress (P=.011) and relative occlusal force (P=.032) in maximum intercuspation position. No difference was seen in NCCL progression between @entity1 with any other factors. CONCLUSION: Heavy occlusal forces play a significant role in the progression of NCCLs.

Factors influencing the progression of XXXX : A 5-year prospective clinical evaluation.

@entity75 :: ('MESH:D001927', 'Disease') :: ['cervical lesion'] @entity1 :: ('9606', 'Species') :: ['participants', 'Participant'] @entity11945 :: ('MESH:C034183', 'Chemical') :: ['Polyvinyl siloxane']
@entity75 :: (MESH:D001927,Disease) :: ['noncarious cervical lesions']
