Year : 2019

Volume : Volume 10

Issue : Issue 1

Address for correspondence :
Dr. Swathi K.
swathikmanjeshwaram98@gmail.com

Abstract

Aim: To compare the fracture resistance of endodontically treated tooth with five different restorative material as access cavity restoration Materials and methodology: 108 single rooted extracted premolars were divided into 6 groups, with 18 teeth in each group. All the premolars excluding the control group were subjected to class 2 access cavity preparation of specific dimension, biomechanical preparation and obturation with single cone method. Following endodontic procedure, each group was restored with specific access restorative materials- Group A- Bulk fill composites, Group B – Ketac Molar GIC, Group C – Zirconomer, Group- D – Giomer and Group E – Equia Forte GC respectively. Group F (control)-sound teeth. The teeth were subjected to thermocycling for 7 days at 37ºC. Fracture resistance was measured using Universal Testing Machine at a cross head speed of 1mm/min. Results: Statistical analysis was done using One way Anova and post hoc Tukey’s test. There was statistically significant differences among the groups (p<0.001). Sound teeth exhibited the highest fracture resistance(- 1161.10 ± 58.74 N).Among the restorative materials Bulk fill composite resulted in highest fracture resistance ( mean value- 716.75 ± 99.87 N) and Ketac molar the least (- 339.31 ± 79.31 N). Conclusion: Preservation of marginal integrity plays an important role in fracture resistance of teeth. Within the limitations of the study bulk fill composite can be regarded as best suited material for access restoration in posterior teeth.

Keywords: Fracture resistance, Bulk fill composite, Zirconomer, Giomer.