Effects of increasing instrument size and taper on the disinfection and shaping of mandibular incisors

• DOI: 10.1111/aej.12851
• Publication Date: 2024-05-08T07:05:50Z
• Authors: Ana Flávia Almeid...; Emmanuel João Nog...; Marco Aurélio Ver...; Carolina Oliveira...; Letícia de Almeid...; Graziela dos Sant...; Thayná Cristine d...; Ricardo Tadeu Lopes; Luciana Moura Sas...
• Keywords: 03 medical and health sciences; 0302 clinical medicine

Abstract This study assessed canal preparation effects on disinfection and dentin preservation. Thirty mandibular incisors were paired into two experimental groups ( n = 10). Following contamination, the initial microbial sample was collected. Instruments 30/0.03 (Group 1) 30/0.05 2) employed a second obtained. Canals enlarged using instruments 40/0.03 40/0.05, respectively, third Final irrigation performed, S4 A final scan evaluated volume, surface area, unprepared areas, removed thickness. Data analysed Student t ‐test, Mann–Whitney, Kruskal–Wallis Dunn tests. significant difference observed between S1 other time points p < 0.05). Comparison showed no differences in bacterial loads percentage of reduction > Group 2 exhibited greater thickness than group 1 mesial aspect root Instrument might provide effective safety during preparation.