Safety of large preparation with different instruments in the buccal canals of maxillary molars.
Ericson Janolio de CamargoMarco Antonio Hungaro DuarteMurilo Priori AlcaldeMarcus Vinicius Dos Reis SóBruno Carvalho de VasconcelosEmmanuel João Nogueira Leal da SilvaGianluca PlotinoRodrigo Ricci VivanPublished in: Australian endodontic journal : the journal of the Australian Society of Endodontology Inc (2020)
This study aimed to evaluate the influence of large apical preparations with Reciproc (REC), Hyflex CM (HCM) and Twisted File Adaptive (TFA) systems using micro-computed tomography (MCT). Ninety mesiobuccal (MB) and distobuccal (DB) root canals of maxillary molars (n = 45) were scanned using MCT before and after the shaping procedures. The root canals (n = 15) were prepared until REC 40.06, HCM 40.04 and TFA 35.04. The root canal transportation (RCT), centring ability (CA), change in volume of the root canal and at different levels (VC), remaining dentine thickness (RDT), removal of dentine wall (RDW) and working time (WT) were evaluated. Data were analysed using the Kruskal-Wallis and Dunn tests, and the one-way ANOVA and Tukey tests with a level of significance set at 5%. No significant difference among the instruments was found regarding the RCT, CA, RDT, RDW and WT (P > 0.05), in larger apical preparations in curved MB and straight DB canals of maxillary molars.
Keyphrases
- computed tomography
- cone beam computed tomography
- hypertrophic cardiomyopathy
- positron emission tomography
- patient reported outcomes
- electronic health record
- protein kinase
- heart failure
- left ventricular
- machine learning
- artificial intelligence
- high resolution
- mass spectrometry
- contrast enhanced
- pet ct
- simultaneous determination