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Title: 1412 - Adaptation of Feldspathic and Zirconia Inlays - A Comparative Evaluation

Authors:

Rajasekaran Meenakshisundaram (Presenter)
RAGAS DENTAL C0LLEGE AND HOSPITAL

SRIDEVI SAICHANDRAN, SATHYABAMA UNIVERSITY DENTAL COLLEGE AND HOSPITAL
ANIL RAMACHANDRAN, RAGAS DENTAL C0LLEGE AND HOSPITAL

Abstract:

Objectives: The objective of this in vitro study is to evaluate and compare the marginal and internal adaptation of Class II Zirconia ceramic inlays to Feldspathic ceramic inlays with and without a resin base and different interface treatments using Scanning Electron Microscopic analysis.

Methods: 40 extracted mandibular molar teeth were divided into 4 groups of 10 teeth each. The Group 1A had Zirconia ceramic inlays with a flowable
Composite base and Group 1B without a base, Group 2A had Feldspathic ceramic inlays with a flowable composite base and Group 2B without a base. Class II MO cavity preparation was done in all the teeth and flowable composite resin base applied on the pulpal floor and axial wall alone for group 1A and 2A. The groups 1B and 2B served as control groups. The under surface of the inlays underwent sand blasting and the cavities underwent soft air abrasion interface treatment.The inlays were luted with dual cure resin cement, left for 24 hours for complete polymerization and embedded in clear acrylic resin. The samples were sectioned mesio-distally were subjected to SEM evaluation for marginal and internal adaptation of all the inlays.

Results: One-way ANOVA and Post hoc Tukey HSD tests were done and was found out that the marginal adaptation of the zirconia ceramic inlays was
statistically significant to Feldspathic ceramic inlays. The internal adaptation of the ceramic inlays with flowable composite resin base in both the groups were statistically significant to the groups without the base.

Conclusions: The ceramic inlays luted in the presence of a flowable composite Resin base had better adaptation than the inlays luted directly to the tooth. Zirconia ceramic Inlays with a flowable composite resin base had better marginal and internal adaptation than zirconia ceramic inlays without base and Feldspathic ceramic inlays with and without a base.

Disclosure Statement:
The submitter must disclose the names of the organizations with which any author have a relationship, the nature of the relationship, and the clinical or research area involved. The following is submitted: NONE

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