FRACTURE RESISTANCE OF EXTERNAL RESORPTIONS 2Cd WITH HYDRAULIC CEMENTS

Abstract: Objective: To compare the fracture resistance of simulated external resorptions 2Cd with repair hydraulic cements. Materials and methods: Sixty single root canal mandibular premolars were used which were divided into 4 groups ( n =10) according to the classification of Shanon Patel; group 1: healthy teeth, group 2: teeth with cervical resorption class 2Cd, without repair hydraulic cement, group 3: teeth with cervical resorption class 2Cd, repaired with hydraulic cement Biodentine, group 4: teeth with cervical resorption class 2Cd, repaired with NeoMTA2 hydraulic cement. The samples were standardized in 16 mm, the simulated cervical resorption covers 3 faces of the tooth, in this case distovestibulomesial surfaces, on the cervical area of the teeth. All samples were subjected to compressive forces (Newtons), and were evaluated at 8 and 30 days, using a Universal machine. Results: In the Biodentine and NeoMTA2 groups evaluated at 8 days, there was a significantly difference in compressive forces (p<0.01); and at 30 days there was no significantly difference between both groups (p>0.05). Conclusions: According to the conditions of the study at 8 days Biodentine had higher compressive forces resistance compared to NeoMTA2, and at 30 days there is no statistically significant, subjected to the compressive forces of teeth with external cervical resorption 2Cd.