Comparative evaluation of impact strength of natural tooth and two different fragment reattachment technique

Background: The reattached fragments are prone to re-fracture if another traumatic episode occurs or under non-physiological use of the restored teeth. There is a scarcity literature regarding management uncomplicated crown fracture reattachment following further Therefore, concerns have been directed towards strength fractured Hence aim in-vitro study was evaluate & compare impact with composite resin polyethylene fiber impregnated in that natural tooth. Methodology: Total samples 42 teeth were collected and indicated for extraction. They cleaned ultrasonically later stored 0.9% saline solution. divided into three groups 14 each. induced by disk, only Ellis class II included study. Group 1 (control group) sound tooth: Directly checked strength. 2: Reattachment fragment using resin. 3: minimal preparation. All thermocycled between 5°C - 55°C 500 cycles 30 seconds dwell time tested an ‘impact testing machine’.