Objective: This study aimed to examine the effects of three distinct file systems with two motion types—rotary and reciprocation—on development dentinal microcracks after root canal preparation using a stereomicroscope. Methods: Sixty mandibular molars curvature 30° were decoronated divided into groups (Vortex Blue, Mtwo, ProTaper Next) subgroups (rotary reciprocating motions). The samples then...

Aim- To evaluate the removal of gutta percha by hand file system, rotary system and reciprocating from root canals using CBCT. Materials Method: Root 42 extracted human mandibular premolars were prepared ProTaper Universal then obturated. filling quality was confirmed on CBCT images. Specimens divided into 3 groups (n = 14) according to used for removal, group 1: H File, 2: MTwo retreatment fil...

Coronal discoloration of endodontically treated teeth is a challenge in clinical dentistry. This study aimed to compare coronal induced by White Mineral Trioxide Aggregate and Calcium-enriched mixture cement. Fifty single-rooted, unrestored premolar extracted for orthodontic reasons were selected. After access cavity preparation, all the root canals instrumented with MTWO rotary files up #40.6%...

introduction: the aim of this study was to compare several metallurgic properties of neoniti instrument with four other commonly used endodontic rotary files. methods and materials: neoniti a1 (25/0.08), race (25/0.06), mtwo (25/0.06), twisted file (25/0.06) and protaper next x2 (25/0.06) were examined by differential scanning calorimetry (dsc) before and after heat treatment at 500 ° c. x-ray ...