Publications by authors named "Dieison Nardi Lazzaretti"
Introduction: The forces applied during orthodontic treatment bring about effects on the teeth and surrounding tissues. The aim of this study was to evaluate the possible changes in the human pulpal tissue resulting from orthodontic intrusion in a 21-day period using histologic examination.
Methods: The sample consisted of 17 young individuals of both sexes between the ages of 12 and 19 years.
Objective: To investigate the influence of three different rotary systems for cervical flaring on establishment of the real working length.
Material And Methods: Thirty mandibular first molars were submitted to conventional endodontic access and initial working length measurement, followed by irrigation/suction of the pulp chamber with 5% sodium hypochlorite. Teeth were randomly divided into 3 groups (n=10) and cervical flaring of the mesiobuccal canals were performed using one of the following instrument systems: Group 1 - Gates-Glidden burs; Group 2 - Orifice Openers; Group 3 - La Axxess system.