Introduction of nickel titanium rotary instruments to undergraduate students: a four-year clinical experience

• Autor(a) principal: Oliveira, Gabrielle Maria de Lima de
• Data de Publicação: 2021
• Outros Autores: Mattos, Natanael Henrique Ribeiro, Roskamp, Liliane, Abuabara, Allan, Baratto-Filho, Flares, Campos, Maria Carolina Botelho Pires de, Xavier, Camila Paola da Costa, Perim, Camila Paiva
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista da ABENO (Online)
• Texto Completo: https://revabeno.emnuvens.com.br/revabeno/article/view/1236
• topic: Endodontics; Undergraduate; Root Canal Preparation.; Endodontia; Graduação; Preparo do Canal Radicular.

Many studies address the quality of root canal treatments, but few refer to endodontics using rotatory techniques performed by novice operators. This study evaluated the performance of undergraduates in their first contact with rotary root canal instrumentation concerning the findings of the final periapical radiograph, and the post endodontic treatment pain. A longitudinal observational study was performed on periapical radiographs of 491 teeth from 450 patients submitted to root canal treatment by undergraduate students from 2015 to 2018. The analysis of the length of root canal filling followed the criteria: (i) acceptable, if periapical radiograph presents root filling ending 0 - 1 mm short of radiographic apex; (ii) over, if periapical radiograph presents root filling ending beyond the radiographic apex; and (iii) under, if periapical radiograph presents root filling ending > 1 mm short of radiographic apex. Evaluation of postendodontic treatment pain was categorized into either absence or presence of pain. Adequate length root canal filling was observed in 65.9% of the cases (324 teeth). Periapical lesions presence and dimensions did not interfere to the obturation quality. Statistical relation was found between the pulp condition and postendodontic treatment pain. The presence of pain was observed in 4.7% of the vital teeth and 0.3% of non-vital teeth. The presence of periapical lesion did not influence postoperative pain. Adequate length root canal filling was observed in most cases and NitTi rotary instrumentation had applicability in undergraduate programs, even with novice operators. Besides that, pulp condition had an effect on postendodontic pain.