Rigidity, retention, and resistance of titanium versus double taper light root canal posts: An in vitro evaluation.

ABSTRACT

Aim: to evaluate and compare the physical properties of titanium posts and double taper (DT) light posts. Materials and Methods: Sixty posts (30 titanium post and 30 DT light post) were selected and divided into three groups. In Group I Ten posts of each type were subjected to a three-point bending test. In Group II 20 posts extracted maxillary central incisors were restored with ten posts of each type and subjected to tensile loading. In Group III 20 posts extracted maxillary central incisors were restored with ten posts of each type and subjected to compressive loading at an angle of 135°. Results: The results showed that DT light posts were significantly less rigid (P <0.001), more retentive and significantly less resistant to fracture (P <0.001) as compared to titanium posts. Conclusion: It is suggested that although the DT light post system does not completely fulfill the requirements claimed by manufacturer but it would meet the requirements to combat the physiological forces operating in the oral cavity.