A laboratory study of the impact of ultraconservative access cavities and minimal root canal tapers on the ability to shape canals in extracted mandibular molars and their fracture resistance

International Endodontic Journal
C M AugustoEmmanuel João Nogueira Leal Silva

Abstract

To evaluate the influence of ultraconservative endodontic cavities (UEC) and the use of instruments with various tapers (0.03 or 0.05) and tip diameters (25 or 40) on the ability to shape canals in mandibular molars and their fracture resistance in comparison with traditional endodontic access cavities (TEC). Thirty-two intact extracted mandibular molars were scanned in a micro-computed tomography device, matched based on similar anatomical features and assigned to UEC or TEC groups and to subgroups according to mechanical canal preparation with Bassi Logic™ rotary NiTi instruments with 0.03 or 0.05 taper (n=8 per group). The teeth were mounted onto a mannequin head and the pulp chambers were accessed and subjected to instrumentation. In the first stage size 25 endodontic instruments were used, with 0.03 or 0.05 tapers. The teeth were re-scanned. Subsequently, a second canal instrumentation was performed with the size 40 instruments with 0.03 or 0.05 tapers and scanned again. The root canals were filled and then subjected to restoration and fracture resistance tests. The data on untouched canal areas, canal transportation, centering ability, the percentage of removed dentine and maximum load at fracture was analyzed. One-way AN...Continue Reading

References

Aug 1, 1971·Oral Surgery, Oral Medicine, and Oral Pathology·S W Schneider
Dec 1, 1982·Journal of Endodontics·A C GoerigH H Schultz
Dec 23, 2006·Journal of Endodontics·André K MickelJefferson J Jones
Aug 19, 2007·British Dental Journal·S Patel, J Rhodes
Jul 2, 2009·Journal of Endodontics·Frank PaquéOve A Peters
Mar 24, 2010·Journal of Endodontics·Weirong TangRoger J Smales
May 4, 2010·Dental Clinics of North America·David Clark, John A Khademi
Jun 24, 2011·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Gustavo De-DeusSidnei Paciornik
Jul 10, 2012·Magnetic Resonance Imaging·Andriy FedorovRon Kikinis
Feb 14, 2013·International Endodontic Journal·M A VersianiM D Sousa-Neto
Nov 1, 2011·Journal of Biomedical Research·Ibrahim M Hamouda, Salah H Shehata
Aug 5, 2014·Journal of Oral & Maxillofacial Research·Gianluca PlotinoGianluca Gambarini
Aug 26, 2014·Journal of Endodontics·Juan Gonzalo OlivieriFernando Duran-Sindreu
Feb 12, 2015·Journal of Endodontics·Gustavo De-DeusAline Almeida Neves
Mar 11, 2016·Brazilian Dental Journal·Gustavo De-DeusAline de Almeida Neves
Sep 1, 2016·International Endodontic Journal·H M A AhmedP M H Dummer
Nov 20, 2016·The Open Dentistry Journal·Mary Th Paraskevopoulou, Marouan G Khabbaz
Apr 19, 2017·Journal of Endodontics·Gianluca PlotinoLuca Testarelli
Sep 1, 2017·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Melissa Andreia MarchesanFranklin García-Godoy
Nov 5, 2017·Clinical Oral Investigations·Emmanuel João Nogueira Leal SilvaTatiana Kelly da Silva Fidalgo
Jan 18, 2018·Journal of Endodontics·Mario AlovisiElio Berutti
May 9, 2018·International Endodontic Journal·C M JaraJ A P Figueiredo
May 22, 2018·Journal of International Society of Preventive & Community Dentistry·Carla ZogheibIssam Khalil

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