Nonconventional Therapeutic Protocol for Type III Dens Invaginatus.

This study discusses a nonconventional therapeutic protocol for type III dens invaginatus. This condition is a disorder of dental development, caused by the invagination of enamel into coronal and/or radicular dentin structure. This promotes several structural alterations within the dental organ, which offers challenges and difficulties to perform the endodontic treatment when needed.

Flute and Shank Dimensions of Reciprocating Instruments before and after Simulated Root Canal shaping.

Aim: This study analyzed the effect of the dimensions of the flute and shank in the first 4 mm of instrument tips on the deformation and dimensional changes of reciprocating instruments after root canal shaping (RCS).

Materials And Methods: The reciprocating instruments used were Reciproc R25, R40, and R50; WaveOne Small, Primary, and Large; and Unicone #20, #25, and #40. Scanning electron microscopy images of the first 4 mm of the tip were acquired at 30× magnification before and after simulated curved root canals were shaped.