Ex vivo fracture resistance of teeth restored with glass and fiber reinforced composite resin
Affiliations
Affiliations
- Department of Restorative & Prosthetic dental sciences, College of Dentistry, King Saud Bin Abdulaziz University for health sciences, Kingdom of Saudi Arabia. Electronic address: hidayathullakhans@ksau-hs.edu.sa.
- Department of Conservative Dentistry & Endodontics, Chettinad Dental College & Research Institute, Tamil Nadu, India. Electronic address: dr.anupama@chettinadhealthcity.com.
- Department of Restorative & Prosthetic dental sciences, College of Dentistry, King Saud Bin Abdulaziz University for health sciences, Kingdom of Saudi Arabia. Electronic address: fadleya@ksau-hs.edu.sa.
- Department of Developmental and Preventive Sciences, Faculty of Dentistry, Kuwait University, Kuwait. Electronic address: jagan@hsc.edu.kw.
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.
Keywords: Composite resin; Fiber reinforced; Fracture resistance.
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