Amolkumar LOKADE, Nitesh TEWARI, Morankar RAHUL, Vijay Prakash MATHUR, Arnab CHANDA
International Archives of Dental Sciences - 2025;46(3):209-214
INTRODUCTION: Fragment reattachment has been suggested as an interim emergent treatment modality for crown root fractures of permanent incisors. However, they may re-fracture leading to fragment dislodgement, even with in the acute phase. Hence, this in vitro study aimed to compare the efficacy of three management protocols of re-fracture of teeth with uncomplicated crown root fractures. MATERIAL and METHODS: Sixty mandibular bovine incisor teeth were selected and were fractured to simulate uncomplicated crown root fracture. Fragments were rehydrated and reattached as per the etching-bonding protocol and stored in artificial saliva. They were refractured and randomly allocated to three groups for rebonding: Group -I(reattachment without rehydration), Group -II-(rehydration and reattachment), and Group -III-(restoration using composite). Universal testing machine was used to evaluate the force required to fracture them. RESULTS: Group III showed the highest mean force (338.95+/-81.94N, 95%CI - 300.60, 377.30), followed by Group II (255.56+/-58.19N, 95%CI -198.32, 252.79). The lowest value of force required to fracture was observed in Group I (141.76+/-60.16N, 95% CI -113.60, 169.9 2). CONCLUSION: The force required for fracture was greater in the teeth where composite restoration was done instead of re-bonding of dislodged crown-root fragment. Among the reattachment groups, the force required to fracture was greater when rehydration was performed.
