The influence of desensitizing agent on the bond strength of various luting cements
Author(s): K. Vinayagavel, P. Rupkumar, C. Sabarigirinathan, G. Sriramaprabu, M. Rajakumar, S. Vinayakam
Background: Veneer restorations either an individual or component of fixed partial prosthesis play vital role in prosthetic dentistry. This study is carried out to evaluate retentivity of cementing medium i.e commercially available desensitizing agents.
Aims & Objectives:
1. To evaluate the retentive ability of different luting cements used in Fixed Prosthodontics.
2. To compare the retentive ability of different luting cements used in Fixed Prosthodontics after application of desensitizing agents.
Methods & Material: Three desensitizing materials are used i.e. Gluma, Systemp and Prime desensitizer. Zinc Phosphate, Zinc Polycarboxylate and Resin Reinforce Glass Ionomer cement used in study. Teeth were mounted in the auto polymerizing acrylic resin blocks. Sixty recently extracted caries free maxillary first premolar teeth of approximately similar sizes were selected. All sixty teeth grouped in to equal four groups. Group II, III & IV coated with Gluma, Systemp and Prime desensitizers respectively and group I left uncoated. Five samples from each group cemented with three different types of cement as mentioned. Samples were incubated and tested.
Results: The application of Gluma desensitizing agent increases the tensile bond strength of the cements and the application of Systemp and Prime desensitizing agent does not have any significance on the tensile bond strength of luting agents.