Cutting efficiency of endodontic files (EFs) has been widely evaluated in the literature. However, its performance depends on the microgeometry of the cutting instrument itself, and this has not been studied in depth. The present review describes basic concepts of cutting instruments, including cutting-tool engineering, the EF relationship, and cutting efficiency among different EF geometric designs during primary treatment and nonsurgical endodontic retreatment.
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http://dx.doi.org/10.1615/CritRevBiomedEng.2020034949 | DOI Listing |
BMC Oral Health
January 2025
Department of Endodontics, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Objectives: This study aimed to compare the marginal adaptation of a cold ceramic (CC) sealer with the single-cone obturation technique with that of an AH-26 sealer with the lateral compaction technique in single-canal teeth.
Materials And Methods: In this in vitro experimental study, the root canals of 24 extracted single-rooted single-canal teeth were instrumented to F3 files by the crown-down technique and randomly assigned to 2 groups (n = 12). The root canals were obturated with a CC sealer and single-cone obturation technique with 4% gutta-percha in group 1 and with an AH-26 sealer and lateral compaction technique with 2% gutta-percha in group 2.
Int J Dent
January 2025
Department of Endodontics, School of Dentistry, Lorestan University of Medical Sciences, Khorramabad, Iran.
This study compared the apical transportation and centering ratio of ProTaper Next (PTN) and XP-endo Shaper (XPS) nickel titanium (NiTi) rotary files in curved root canals using cone beam computed tomography (CBCT). The current in vitro study involved the mesiobuccal canals of mesial roots in 44 extracted mandibular first molars that exhibited apical curvature ranging from 10° to 30°. Two experimental groups were randomly formed from the teeth ( = 22) and subjected to instrumentation with PTN and XPS.
View Article and Find Full Text PDFBMC Oral Health
January 2025
Department of Conservative Dentistry, College of Dentistry, Kyung Hee University, 26-6, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02453, Republic of Korea.
Background: This study aims to compare design, phase transformation behavior, and torsional resistance of the ProGlider (PG) and ProTaper ultimate slider (PUS) and to compare the performance of two files in the glide-path preparation of a double-curved artificial canal.
Methods: Scanning electron microscopy, micro-computed tomography, and differential scanning calorimetry were used to characterize the samples. A torsional resistance test was performed to obtain ultimate strength and distortion angle.
Int J Clin Pediatr Dent
November 2024
Department of Pedodontics and Preventive Dentistry, Haldia Institute of Dental Sciences and Research, West Bengal University of Health Sciences, Kolkata, West Bengal, India.
Context: Pulpectomy is recommended for primary teeth when both the coronal and radicular pulp tissues are irreversibly damaged. Biomechanical preparation of root canals is essential for the success of endodontic treatment. Achieving the optimal length during obturation while minimizing voids and ensuring a hermetic seal is crucial for the success of pulpectomy procedures.
View Article and Find Full Text PDFCureus
December 2024
Oral and Maxillofacial Surgery, Bharati Vidyapeeth (Deemed to be University) Dental College and Hospital, Pune, IND.
Introduction Endodontic re-infections primarily occur due to the ingress of bacteria and their toxins through an incomplete seal following obturation. A variety of sealers have been developed to achieve effective integration with the different obturation materials and dentinal tubules. To choose the right endodontic sealer and application for each clinical instance, one must be aware of the attributes of the various sealers commonly used in clinical practice.
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