All ETDs from UAB

Advisory Committee Chair

John O Burgess

Advisory Committee Members

Amjad Javed

Daniel Givan

Deniz Ustun

Jack Lemons

Keith Kinderknecht

Document Type

Thesis

Date of Award

2011

Degree Name by School

Master of Science (MS) School of Dentistry

Abstract

Non-carious cervical lesions (NCCL) are non-bacterial in origin and defined as the loss of tooth substance at the cemento-enamel junction (Mair, 1992). There is growing evidence that NCCLs may be associated with occlusal and lateral. OBJECTIVE: To develop a non invasive, highly reproducible technique to measure the occlusal forces (biting pressure) and to correlate it with lesion progression. MATERIALS & METHODS: Twenty-six subjects and 60 teeth were measured for biting force. Digital images and elastomeric impressions were made ateach of three visits (baseline restoration, one and two years). Casts were prepared and a fixture which aligned each patients cast in the position was made with putty impression material. By positioning the series of casts at same angle scanning accuracy with the Proscan increased in accuracy in lesion progression from baseline to one and two years more consistent. Measurements of biting forces were recorded on a pressure indicating film. RESULTS: Pearson's coefficient of correlation correlated lesion progression and biting forces (pressure). Lesion progression from baseline to two years was correlated to the biting forces (p=0.007). CONCLUSION: Within limitation of this study lesion progression over two year was positively correlated average biting pressure on the tooth. KEYWORDS: abfraction and non carious cervical lesions.

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