Ex vivo fracture resistance of teeth restored with glass and fiber reinforced composite resin. (June 2018)

• Record Type: Journal Article
• Authors: Khan, Sulthan Ibrahim Raja; Ramachandran, Anupama; Alfadley, Abdulmohsen; Baskaradoss, Jagan Kumar
• Is Part Of: Journal of the mechanical behavior of biomedical materials. Volume 82(2018)
• Page Start: 235
• Page End: 238
• Publication Date: 2018-06
• Subjects: Composite resin -- Fiber reinforced -- Fracture resistance; Biomedical materials -- Periodicals; Biomedical materials -- Mechanical properties -- Periodicals; Biomedical materials; Biomedical materials -- Mechanical properties; Periodicals; Electronic journals; 610.28
• DOI: 10.1016/j.jmbbm.2018.03.030
• Languages: English
• ISSNs: 1751-6161

Abstract

Abstract: Objectives: This study aims to compare the ex vivo fracture resistance of root canal treated (RCT) teeth restored with four different types of fibers under composite resin. Subjects and methods: One hundred and forty extracted mandibular first molar teeth were assigned to seven groups (n = 20/group). Group 1 was the control group. In groups 2−7, endodontic access and standard Mesio-occluso-distal (MOD) cavities were prepared. Following RCT, group 2 was left unrestored. In group 3, flowable composite resin (FCR) was used to line the cavities and restored with composite resin. In groups 4, 5, 6 and 7, Ribbond, Everstick, Dentapreg and Bioctris fibers were inserted in flowable resin and restored respectively. Results: All the groups restored with fiber reinforced composite displayed higher fracture resistance than the group restored with only composite resin (p < 0.001). In addition, Groups restored with Everstick and Bioctris (Groups 5 and 7) showed higher fracture resistance when compared to Ribbond and Dentapreg (Groups 4 and 6). Conclusion: E glass fibers demonstrated highest fracture resistance and hence can be preferred over other fiber types to reinforce RCT teeth with weakened crown structures.