Fracture resistance of endodontically treated molars restored with resin composites
Journal Title: IP Indian Journal of Conservative and Endodontics - Year 2017, Vol 2, Issue 3
Abstract
Introduction: To conserve tooth structure, adhesive composite restorations that can provide intracoronal reinforcement are advocated to restore endodontically treated teeth. Aim: The objective of the study was to compare the fracture resistance of endodontically treated molars restored with cuspal coverage restorations using different resin composites. Materials and Method: Ninety extracted, maxillary molar teeth were randomly divided into two control groups and four test groups (n=15 each). In seventy five teeth, class II MOD cavities with mesio-palatal cusp cappings followed by root canal therapy and post endodontic restorations were done. Restorative materials tested were: nanohybrid composite (Filtek Z250 XT), bulk fill composite (Tetric Evoceram), fiber reinforced (Ribbond) composite and indirect composite (SR Adoro). After finishing and polishing of the restorations, teeth were subjected to thermocycling and then to compressive loading in a universal testing machine. The mean load necessary to fracture the teeth were recorded in Newtons and stress distribution in these restored molars were tested by finite element analysis(FEA). The mode of failure was observed using stereomicroscope. Statistical analysis was done using SPSS/PC version 20.0 software and the results were analyzed by one way ANOVA and Tukey’s post hoc test. Results: Post endodontic restorations using fiber reinforced composite and indirect composites exhibited fracture resistance similar to sound intact teeth (p>0.05). Significant difference in fracture resistance was observed for nanohybrid composite when compared with fiber reinforced and indirect composite groups(p<0.05). Most of the restorable (favourable) fractures were observed in the nanohybrid composite group followed by the indirect composite group. Unrestorable fractures were seen mostly in the bulk fill composite group followed by the fiber reinforced composite group. Conclusion: Restorations with fiber reinforced and indirect composites increased the fracture resistance of endodontically treated teeth. Resin composites with good bonding ability transmit and distribute functional stresses and hold the potential to reinforce the weakened tooth structure.
Authors and Affiliations
Sonam Asopa, Jyothi Mandava, Uma Chalasani, Anupreeta Anwarullah, Ravichandra Ravi
Keywords
Related Articles
- EP ID EP321130
- DOI -
- Views 53
- Downloads 0
Endodontic management of fractured crown and rehabitation with fractured natural tooth- All in single visit
Introduction Accidental fracture of upper central incisor are very commonly seen in routine dental practice but management of fractured crown in single sitting are the challenges what we faced in towards practices with r...
Fracture resistance of endodontically treated molars restored with resin composites
Introduction: To conserve tooth structure, adhesive composite restorations that can provide intracoronal reinforcement are advocated to restore endodontically treated teeth. Aim: The objective of the study was to compare...
Effectiveness of an in-office calcium-phosphate-based desensitizer: A six-month randomized-controlled trial and a SEM study of in-vivo treated teeth
Aim: The aim of this single-centre, triple-blind, randomized controlled clinical trial was to evaluate the effectiveness of an in-office desensitizing agent containing tetracalcium phosphate and dicalcium phosphate anhyd...
Pain after single visit endodontic treatment using fifth generation file systems -An invivo study
Aim: To compare the incidence, duration and severity of pain after single visit root canal treatment with three different fifth generation file systems (ProTaper Next, One Shape, and Revo-S). Materials and Method: Three...
Clinical and radiographic characteristics of the chronic apical periodontitis in senegalese population
Aim This study proposes to describe the epidemiological clinical and radiographic characteristics of Chronic Apical Periodontitis CAP in a population of patients attending Conservative Dentistry clinic of Odontology Depa...