The differences of microleakage smart dentin replacement, glass ionomer cement and a flowable resin composite as orifice barrier in root canal treated

Abstract

This study was a laboratory experiment. The sample was 27 premolar teeth with one or two mandibular permanent teeth extracted consist of: a smart dentin replacement, glass ionomer cement, and a flowable resin composite. Teeth were prepared using a crown-down method and obturated using gutta percha and AH Plus. After placement of the orifice barrier with a thickness of 4 mm, the teeth were immersed in a 2% methylene blue solution at 37ºC for 24 hours. Teeth sectioned in the buccolingual direction and observation of microleakage using a stereomicroscope (M = 10×). The results showed that microleakage differences between a smart dentin replacement, glass ionomer cement, and a flowable resin composite. The smart dentin replacement has the smallest micro-leakage value of 1.70 but does not differ significantly with the flowable composite resin.

Keywords

• dentin
• flowable resin composite
• glass ionomer cement
• micro-leakage
• orifice barrier
• premolar
• root canal