Introduction: The aim of this study was to evaluate the effects of training duration and case difficulty on the radiographic quality of root canal fillings performed by dental students in Saudi Arabia.
Methods And Materials: A longitudinal cohort study was conducted at King Saud University. Root canal treatments performed by 55 dental students from 2012-2014 were included in the study. Each student treated at least five teeth during the first year of clinical endodontic training and another five teeth during the second year. Case difficulty was assessed based on tooth position in the dental arch and preoperative conditions. The radiographic quality of the root canal filling was evaluated by two endodontists blinded to treatment completion date. The evaluation criteria were adequate obturation, presence of mishaps and preparation taper. The data were statistically analysed using univariate and multivariate logistic regression analyses; and the level of significance was set at 0.05.
Results: Inadequate obturation and mishaps were significantly less prevalent in teeth treated after 2 years of clinical training. The odds ratios for inadequate obturation and mishaps increased significantly as tooth position moved posteriorly. Inadequate obturation and more mishaps were significantly more prevalent in teeth with preoperative conditions. Preparation taper was not significantly affected by training duration or case difficulty.
Conclusion: The quality of root canal fillings performed by Saudi students was adversely affected by case difficulty. The radiographic quality of root canal fillings improved significantly after 2 years of clinical training. Preparation taper outcome is likely dependent on the preparation technique and instrument taper.
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http://dx.doi.org/10.7508/iej.2015.04.012 | DOI Listing |
BMC Oral Health
December 2024
School of Dentistry, The University of Queensland, Brisbane, Australia.
Background: This randomized clinical trial aimed to evaluate the effect of intracanal cryotherapy with 2-4 °C normal saline irrigation on post-operative pain after single-visit non-surgical root canal retreatment.
Methods: Forty-six single-rooted, single-canal teeth requiring non-surgical root canal retreatment were randomly assigned to two groups (n = 23): a cryotherapy group and a control group. All the treatments were completed during a single visit.
Surg Obes Relat Dis
December 2024
Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden.
Background: Bariatric surgery has been shown to cause a negative impact on oral health, as reflected by postsurgical increase of caries-related dental interventions.
Objectives: The aim of this study was to compare dental intervention rates after Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG).
Setting: Nationwide and register-based (Sweden).
J Endod
December 2024
Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, SP, Brazil. Electronic address:
Objectives: This study aimed to evaluate, using micro-computed tomography (microCT), the impact of various mechanized systems on the geometry of the root canal system (RCS) and dentin thickness in mandibular first molars. The hypothesis proposed that different systems would produce significant variations in RCS preparation.
Methods: Mesial and distal canals of mandibular molars were selected and divided into five groups (n=10) based on the system used: 2Shape (25.
J Endod
December 2024
Division of Endodontology, Department of Conservative and Preventive Dentistry, Center for Dental Medicine, University of Zurich, 8032 Zurich, Switzerland. Electronic address:
Introduction: Adding a compatible chelator to the sodium hypochlorite (NaOCl) solution applied during instrumentation may affect shaping efficacy and canal transportation. This was studied in simulated double-curved root canals.
Methods: High-precision computer numerical control milling was used to recreate standardized S-shaped canals from a resin training block in longitudinally sectioned bovine incisor roots.
BMC Oral Health
December 2024
Department of Pediatric Dentistry, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran.
Background And Objectives: Although effective irrigation methods are crucial for pulpectomy in primary teeth (PT), no consensus exists on the best technique. This study guides clinicians in making evidence-based choices for irrigation techniques in PT.
Design: This study reviewed in vitro and in vivo research on PT using an extensive electronic search up to April 2024.
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