Effect of Curing Time on the Flexural Strength of Heat Cured Acrylic Resin

City Dental College Journal

Md Mahbubur Rahman¹  Kazi Ziaul Islam²  Md Ali Asgor Moral³ 

[1]Assoc. Professor and ChairmanDept. of ProsthodonticsBangabandhu Sheikh Mujib MedicalUniversity, Dhaka

[2]Asst. ProfessorDept. of ProsthodonticsUniversity Dental College, Dhaka

[3]Professor, Conservative Dentistry &EndodonticsCourse Director, Faculty of DentistryBangabandhu Sheikh Mujib MedicalUniversity, Dhaka

关键词: Curing time;    flexural strength;    heat cured acrylic resin;   

DOI  :  10.3329/cdcj.v9i2.12316

学科分类：口腔科学

来源: City Dental College Journal

【 摘 要 】

Objectives:The aim of this study was to find out the proper curing time and flexural strength of heat cured acrylic resin cured in boiling water at 100°c with time difference and to compare the maximum flexural strength in optimum time.Methods:In this study, 60 heat cured acrylic resin samples were processed with compression moulding technique at 100°c among which each of 20 samples were cured for 20, 40 and 60 minutes separately. Flexural strength of samples was determined by using 3 point bending test by universal testing machine. Data was analyzed using ANOVA test and unpaired t-test.Results:The ANOVA result showed that there was no significant differences among the groups with respect to the mean flexural strength (P>0.05) and unpaired t-test also showed no significant differences among the groups. The mean flexural strength of acrylic resin cured at 100°c with compression moulding technique at 100°c at 20 minutes was 80.09±14.58 MPa, at 40 minutes was 79.71±13.1 MPa and at 60 minutes was 80.76±15.75 MPa.Conclusion : The flexural strength of heat cured acrylic denture base resin cured at 100°c for different period of time (at 20, 40 & 60 minutes) have given no significant differences. DOI:http://dx.doi.org/10.3329/cdcj.v9i2.12316City Dental College J. Volume-9, Number-2, July-2012

【 授权许可】

CC BY