Comparison and Evaluation of Fracture Resistance of Endodontically Treated Maxillary Central Incisors with 3 Different Bonded Post and Cores: An In Vitro Study Ignatious Varsha1, Shetty B Thilak2, Saldanha Sharon3,*, Rodrigues Shobha4, Mahesh3, Pai Umesh3, Hegde Puneet3 1Postgraduate, Department of Prosthodontics, Crown and Bridge, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education 2Professor, Department of Prosthodontics, Crown and Bridge, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education 3Associate Professor, Department of Prosthodontics, Crown and Bridge, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education 4Professor and Head, Department of Prosthodontics, Crown and Bridge, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education *Corresponding Author: Dr Sharon Saldanha, Associate Prof, Dept of Prosthodontics, Manipal College of dental sciences, Mangalore Manipal Academy of Higher Education, Contact number: 9880852730, Email id: sharon.saldanha@manipal.edu
Online published on 27 November, 2019. Abstract Purpose To compare and evaluate the fracture resistance of endodontically treated Maxillary Central Incisors with three different bonded post and cores. Method 30 endodontically treated maxillary central incisors were embedded in blocks of self cure resin and restored with Cast metal (Group1, glass fibre post and core (Group 2) and copy milled zirconia post (Group 3). After the post and core fabrication, thermocycling was carried out and loaded with the help of Universal testing machine. Results All data were analyzed statistically using ANOVA test and Post Hoc Tukey's test. The results showed that amongst the mean values in the three groups, highest value was the cast post and core with a value of 2337+/-456.39 N and least in the fiber post with a mean of 740 +/-142.25. This comparison is statistically significant with a p value of <0.001. Conclusion Copy milled Zirconia and fiber post and core may prove to be good alternatives to the gold standard cast Ni-Cr post and core for endodontically treated anterior teeth. Top Keywords Post, Core, Ni-Cr, Cast, Zirconia. Top |