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ORIGINAL RESEARCH Table of Contents   
Year : 2013  |  Volume : 24  |  Issue : 6  |  Page : 730-735
Comparative study to evaluate the accuracy of polyether occlusal bite registration material and occlusal registration wax as a guide for occlusal reduction during tooth preparation


1 Departments of Prosthodontics, A.B. Shetty Memorial Institute of Dental Sciences, Rajiv Gandhi University of Health Sciences, Deralakatte, India
2 Departments of Prosthodontics, A.B. Shetty Memorial Institute of Dental Sciences, Rajiv Gandhi University of Health Sciences, Deralakatte; Department of Prosthodontics and Center for Advanced Dentofacial and Stomatognathic System, A.B. Shetty Memorial Institute of Dental Sciences, Mangalore, Karnataka, India

Correspondence Address:
Niranjan Joshi
Departments of Prosthodontics, A.B. Shetty Memorial Institute of Dental Sciences, Rajiv Gandhi University of Health Sciences, Deralakatte
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-9290.127622

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Introduction: The use of different materials and techniques has been studied to decide the safest quantum of reduction of the occlusal surfaces. However, these methods provide limited information as to the actual amount of reduction with limitations in accuracy, accessibility and complexity. Objective: The objective of this study was to compare and evaluate the reliability of the most commonly used occlusal registration wax that with polyether bite registration material as a guide for occlusal reduction required during tooth preparations. Materials and Methods: For the purpose of this study, 25 abutment teeth requiring tooth preparation for fixed prosthesis were selected and tooth preparations carried out. Modeling wax strips of specific dimensions were placed onto the cast of prepared tooth, which was mounted on maximum intercuspation on the articulator and the articulator was closed. The thickness of the wax registration was measured at three zones namely two functional cusps and central fossa. Similar measurements were made using the polyether bite registration material and prosthesis at the same zones. The data was tabulated and was subjected to statistical analysis using anova test and Tukey honestly significant difference test. Results: The differences in thickness between wax record and prosthesis by 0.1346 mm, whereas the difference between polyether and prosthesis was 0.02 mm with a P value of 0.042, which is statistically significant. This means that the wax record was 8.25% larger than the prosthesis while polyether was just 1.27% larger than the prosthesis. Conclusion: The clinical significance of the above analysis is that Ramitec polyether bite registration material is most suitable material when compared with commonly used modeling wax during the tooth preparation.


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