An in vitro evaluation of the fracture resistance of endodontically treated single rooted premolar fractured vertically and reattached using two different fiber reinforced composites

Dr Shruthi H Attavar; Dr PrasannaLatha Nadig

Volume : V, Issue : I, January - 2015

An in vitro evaluation of the fracture resistance of endodontically treated single rooted premolar fractured vertically and reattached using two different fiber reinforced composites

Dr Shruthi H Attavar, Dr Prasannalatha Nadig

Abstract :

A vertical root fracture (VRF) manifests as a complete or incomplete fracture line extending obliquely or longitudinally through the enamel ,dentin and cementum of an endodontically treated teeth THE AIM of this in vitro study was to determine the effect of two different types of fibers –ultra high molecular weight polyethylene and glass fiber on the fracture resistance of vertically fractured and reattached fragments of endodontically treated teeth. MATERIAL AND METHOD –Sixty single rooted mandibular premolar teeth extracted was collected and used in the study .vertical fracture was generated using chisel and mallet . Group1 ie control group consist of 15 obturated teeth without vertical fracture .Group 2 consist of vertically fractured teeth reattached using self adhesive resin cement, Group 3 consist of vertically fractured teeth reattached using polyethylene fiber ribbond THM, Group 4 consist of reattached using interlig glass fiber. The Teeth were subjected to vertical loading in universal testing machine and mean load needed to fracture the tooth were calculated .statistical analysis were done using ANOVA . RESULTS – The mean load required to fracture the tooth was highest for control group that is group 1 followed by group 3 which is reinforcement with polyethylene group and lowest for group 2 which is reinforcement with self adhesive resin cement and group 4 which is the glass fiber group.CONCLUSION reinforcement with polyethylene fiber (ribbond THM) increases the fracture resistance under vertical forces when compared to glass fiber reinforcement (interlig ).