Influence of Three Pattern Materials on the Marginal Adaption of Co-Cr Alloy Inner Crown of PFM Endocrown

Abstract:

Objective: To evaluate the influence of three pattern materials on the marginal fitness of Co-Cr alloy inner crown of porcelain fused to metal (PFM) endocrown. Method: Standard molar abutments mould with 90°shoulder, 6°convergens, 5.0mm occlusal-gingival height, and 15.0mm neck diameter were made of stainless steel. Three kinds of pattern materials, including Inlay wax (group A), Casting Pattern resin (group B), and Pattern Resin (group C), were used to fabricate the pattern of Co-Cr alloy inner crown of PFM endocrown. The fitness of the inner crown finished was evaluated. T test was used for statistical analysis. Results: The means of marginal gaps between inner crown and abutment shoulder made of three pattern materials were 55.9μm for group A, 37.1μm for group B, 63.1μm for group C respectively. There were statistically significance among the 3 groups (P< 0. 05). Conclusion: As a pattern material, Casting Pattern resin is suitable for fabrication of Co-Cr alloy inner crown of porcelain fused to metal endocrown.

• Periodical: Advanced Materials Research (Volumes 887-888)
• Pages: 407-410
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.887-888.407
• Online since: February 2014
• Authors: Hong Bo Li, Lin Liu, Xue Shen Li, Xiao Yu Wang, Yu Xuan Gao, Jing Guo
• Keywords: Endocrown, Inner Crown, Marginal Adaption, Pattern Materials

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