Comparative evaluation of fracture resistance of different post systems
Mavari Karibasappa Saritha1, Uttam Paul2, Kiran Keswani3, Ashu Jhamb4, Swapnil Haribhau Mhatre5, Pradyumna Kumar Sahoo6
1 Department of Prosthodontics, Chettinad Dental College and Research Institute, Kelambakkam, Chennai, Tamil Nadu, India
2 Department of Conservative Dentistry and Endodontics, Private Practitioner, Guwahati, Assam, India
3 Department of Conservative Dentistry and Endodontics, DY Patil Dental College, Lohegaon, Pune, Maharastra, India
4 Department of Conservative Dentistry & Endodontics, National Dental College and Hospital, Dera Bassi, Punjab, India
5 Department of Pediatric and Preventive Dentistry, Raj Rajeshwari Dental College, Udaipur, Rajasthan, India
6 Department of Prosthodontics, Faculty of Dental Sciences, Siksha O Anusandhan University, Bhubaneswar, Orissa, India
Dr. Mavari Karibasappa Saritha
Department of Prosthodontics, Chettinad Dental College and Hospital, Kelambakkam, Tamil Nadu
Source of Support: None, Conflict of Interest: None
Aim: The study was done to evaluate the fracture resistance of carbon, glass fiber, and zirconia posts.
Materials and Methods: Forty-five human premolars indicated for orthodontic extraction were subjected to root canal treatment and obturated with gutta-percha. All the teeth were decoronated and mounted in acrylic block. Then, teeth were equally divided into three groups: (a) carbon, (b) glass fiber, and (c) zirconia post group. Post space was prepared and particular post was cemented in post space. Core buildup was made with composite. A compressive load was applied using universal testing machine and fracture force was measured in MPa. The data were tabulated, and statistical evaluation was done using statistical software IBM SPSS Statistics for Windows, version 21.0., IBM Corp., Armonk, NY, USA, using one-way analysis of variance for analysis of difference and Bonferroni post hoc test.
Results: Zirconia endodontic post had good fracture resistance (489.2 MPa) when compared with carbon (258.4 MPa) and glass fiber-reinforced post (348.7 MPa). Fracture resistance was statistically significant between test groups P>0.001.
Conclusion: The present study concluded that zirconia had good fracture resistance compared to glass fiber and carbon posts.