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J Prosthet Dent. 2016 May;115(5):571-7. doi: 10.1016/j.prosdent.2015.10.021. Epub 2016 Jan 7.

Factors influencing the progression of noncarious cervical lesions: A 5-year prospective clinical evaluation.

Author information

1
Research Assistant, Division of Biomaterials, UAB School of Dentistry, Birmingham, Ala. Electronic address: ksawlani@uab.edu.
2
Assistant Professor, Division of Biomaterials, UAB School of Dentistry, Birmingham, Ala.
3
Professor and Director, Division of Biomaterials, UAB School of Dentistry, Birmingham, Ala.
4
Professor, Division of Biomaterials, UAB School of Dentistry, Birmingham, Ala.
5
Professor and Director, Graduate Prosthodontics, UAB School of Dentistry, Birmingham, Ala.
6
Associate Professor, Division of Prosthodontics, UAB School of Dentistry, Birmingham, Ala.

Abstract

STATEMENT OF PROBLEM:

The etiology (chemical, friction, abfraction) of noncarious cervical lesion (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 participants with NCCLs were enrolled. Polyvinyl siloxane 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. Participant 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 participants with any other factors.

CONCLUSION:

Heavy occlusal forces play a significant role in the progression of NCCLs.

PMID:
26774320
DOI:
10.1016/j.prosdent.2015.10.021
[Indexed for MEDLINE]

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