Fracture resistance of maxillary central incisor with external cervical resorption restored with biomimetic bilayered restoration technique: Anstudy
Source: PubMed Central Open Access, NCBI / U.S. National Library of Medicine
Background: External cervical resorption (ECR) is an inflammatory process resulting in the loss of peri-cervical dentin. Calcium silicate cements have been widely used in the management of ECR; however, their limited ability to enhance fracture resistance remains a concern. To overcome this limitation, short fiber-reinforced composite may be utilized for the restoration of ECR defects. Aim: The present study evaluated the fracture resistance of the maxillary central incisor with a simulated ECR defect restored using a novel biomimetic bilayered restoration (BBR) technique. Materials and Methods: Sixty-six maxillary central incisors were included. ECR defects were prepared in the samples and restored using the following groups (= 11): Group A – ProRoot MTA; Group B – Bio-C Repair; Group C (BBR technique) – EverX Flow + ProRoot MTA; Group D (BBR technique) – EverX Flow + Bio-C Repair; Group E – ECR defect prepared and unrestored (negative control); and Group F – Intact teeth (positive control). The samples were subjected to the fracture analysis using a universal testing machine and the resulting failure patterns were examined under a stereomicroscope. The intergroup comparison was done using the one-way ANOVA followed by Tukey’stest. Results: The mean and standard deviation of fracture resistance of all the groups ranged from 100.3 ± 6.34 to 997.5 ± 152 (< 0.05). The highest values were noted for Group F, followed by Group C and D (BBR technique) and the lowest for Group E. Sa
Abstract
Background: External cervical resorption (ECR) is an inflammatory process resulting in the loss of peri-cervical dentin. Calcium silicate cements have been widely used in the management of ECR; however, their limited ability to enhance fracture resistance remains a concern. To overcome this limitation, short fiber-reinforced composite may be utilized for the restoration of ECR defects. Aim: The present study evaluated the fracture resistance of the maxillary central incisor with a simulated ECR defect restored using a novel biomimetic bilayered restoration (BBR) technique. Materials and Methods: Sixty-six maxillary central incisors were included. ECR defects were prepared in the samples and restored using the following groups (= 11): Group A – ProRoot MTA; Group B – Bio-C Repair; Group C (BBR technique) – EverX Flow + ProRoot MTA; Group D (BBR technique) – EverX Flow + Bio-C Repair; Group E – ECR defect prepared and unrestored (negative control); and Group F – Intact teeth (positive control). The samples were subjected to the fracture analysis using a universal testing machine and the resulting failure patterns were examined under a stereomicroscope. The intergroup comparison was done using the one-way ANOVA followed by Tukey’stest. Results: The mean and standard deviation of fracture resistance of all the groups ranged from 100.3 ± 6.34 to 997.5 ± 152 (< 0.05). The highest values were noted for Group F, followed by Group C and D (BBR technique) and the lowest for Group E. Samples restored with the BBR technique showed more favorable fracture patterns. Conclusion: BBR technique can be a promising choice for restoring teeth with ECR.