Ana Flávia Almeida Barbosa DDS, MSc, PhD, Emmanuel João Nogueira Leal Silva DDS, MSc, PhD, Marco Aurélio Versiani DDS, MSc, PhD, Carolina Oliveira Lima DDS, MSc, PhD, Letícia de Almeida Pereira Reis Oliveira DDS, Graziela dos Santos Massa DDS, MSc, Thayná Cristine da Silva Eustáquio DDS, MSc, Ricardo Tadeu Lopes PhD, Luciana Moura Sassone DDS, MSc, PhD
{"title":"Effects of increasing instrument size and taper on the disinfection and shaping of mandibular incisors","authors":"Ana Flávia Almeida Barbosa DDS, MSc, PhD, Emmanuel João Nogueira Leal Silva DDS, MSc, PhD, Marco Aurélio Versiani DDS, MSc, PhD, Carolina Oliveira Lima DDS, MSc, PhD, Letícia de Almeida Pereira Reis Oliveira DDS, Graziela dos Santos Massa DDS, MSc, Thayná Cristine da Silva Eustáquio DDS, MSc, Ricardo Tadeu Lopes PhD, Luciana Moura Sassone DDS, MSc, PhD","doi":"10.1111/aej.12851","DOIUrl":null,"url":null,"abstract":"<p>This study assessed canal preparation effects on disinfection and dentin preservation. Thirty mandibular incisors were paired into two experimental groups (<i>n</i> = 10). Following contamination, the initial microbial sample was collected. Instruments 30/0.03 (Group 1) and 30/0.05 (Group 2) were employed and a second sample was obtained. Canals were enlarged using instruments 40/0.03 and 40/0.05, respectively, and a third sample was collected. Final irrigation was performed, and sample S4 obtained. A final scan evaluated volume, surface area, unprepared areas, removed dentin and dentin thickness. Data were analysed using Student <i>t</i>-test, Mann–Whitney, Kruskal–Wallis and Dunn tests. A significant difference was observed between S1 and other time points (<i>p</i> < 0.05). Comparison between groups showed no differences in bacterial loads and in the percentage of microbial reduction (<i>p</i> > 0.05). Group 2 exhibited greater reduction in dentin thickness than group 1 in the mesial aspect of the root (<i>p</i> < 0.05). Instrument 30/0.03 might provide effective disinfection and safety during mandibular incisors canal preparation.</p>","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Australian Endodontic Journal","FirstCategoryId":"3","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/aej.12851","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
引用次数: 0
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) and 30/0.05 (Group 2) were employed and a second sample was obtained. Canals were enlarged using instruments 40/0.03 and 40/0.05, respectively, and a third sample was collected. Final irrigation was performed, and sample S4 obtained. A final scan evaluated volume, surface area, unprepared areas, removed dentin and dentin thickness. Data were analysed using Student t-test, Mann–Whitney, Kruskal–Wallis and Dunn tests. A significant difference was observed between S1 and other time points (p < 0.05). Comparison between groups showed no differences in bacterial loads and in the percentage of microbial reduction (p > 0.05). Group 2 exhibited greater reduction in dentin thickness than group 1 in the mesial aspect of the root (p < 0.05). Instrument 30/0.03 might provide effective disinfection and safety during mandibular incisors canal preparation.
期刊介绍:
The Australian Endodontic Journal provides a forum for communication in the different fields that encompass endodontics for all specialists and dentists with an interest in the morphology, physiology, and pathology of the human tooth, in particular the dental pulp, root and peri-radicular tissues.
The Journal features regular clinical updates, research reports and case reports from authors worldwide, and also publishes meeting abstracts, society news and historical endodontic glimpses.
The Australian Endodontic Journal is a publication for dentists in general and specialist practice devoted solely to endodontics. It aims to promote communication in the different fields that encompass endodontics for those dentists who have a special interest in endodontics.