Objective: The purpose of this randomized clinical study was to investigate the influence of occlusal surface reduction on postendodontic pain.
Methodology: Sixty patients were included with a diagnosis of acute irreversible pulpitis and acute apical periodontitis and divided randomly into two groups. In the intervention group, occlusal surfaces were reduced and left intact in the control group. Postoperative pain was evaluated at the 6, 12, 24, and 48 h after the root canal instrumentation and 6 and 12 h following obturation using visual analog scale. Data were evaluated using the Chi-square test, -test, Friedman test, Mann-Whitney -test, and Wilcoxon rank test.
Results: Postoperative pain levels in both groups were reduced significantly over the time period evaluated, however, between the two groups, there was no difference evident.
Conclusion: Occlusal surface reduction did not influence the pain following root canal instrumentation and obturation.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11498238 | PMC |
http://dx.doi.org/10.4103/JCDE.JCDE_325_24 | DOI Listing |
Swiss J Palaeontol
January 2025
Department of Palaeontology, Geozentrum, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria.
Unlabelled: A new lower tooth plate of from the Turonian (Upper Cretaceous) of the Dalmatian region (southern Croatia) is documented here for the first time. The specimen represents the first articulated dentition of a ptychodontid shark that has been discovered from the Balkan Peninsula and the most complete ever found for the un-cuspidate species up to now. The reconstruction of the entire lower dentition of based on this exceptionally well-preserved dentition shows a wider crushing plate than previously hypothesised with bulgy teeth limited to the central area.
View Article and Find Full Text PDFJ Conserv Dent Endod
November 2024
Department of Conservative Dentistry and Endodontics, GITAM Dental College and Hospital, Visakhapatnam, Andhra Pradesh, India.
Background: Long-term durability of a restoration relies on the marginal integrity and its ability to withstand the occlusal forces. Fiber-reinforced composites (FRCs) exhibited superior properties in terms of fracture toughness, flexural strength, and wear resistance.
Aim: The aim of this study was to assess and compare marginal adaptation and microtensile bond strength (µTBS) of posterior FRCs comparing with a condensable composite.
BMC Oral Health
January 2025
Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China.
Objectives: To compare the stress distribution and crack propagation in cracked mandibular first molar restored with onlay, overlay, and two types of occlusal veneers using two different CAD/CAM materials by Finite Element Analysis (FEA).
Materials And Methods: A mandibular first molar was digitized using a micro CT scanning system in 2023. Three-dimensional dynamic scan data were transformed, and a 3D model of a cracked tooth was generated.
J Prosthodont
January 2025
Department of Dental Materials and Prosthesis, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil.
Purpose: To evaluate the physical and mechanical properties after brushing and microbial adhesion of printed resins (PRs) and heat-polymerized resins (HRs) for occlusal devices (ODs).
Materials And Methods: Knoop microhardness and roughness were evaluated in three measurements before and after brushing with detergent or dentifrice. Flexural strength and modulus of elasticity were assessed by 3-point bending, and the adhesion of Candida albicans and Streptococcus mutans was evaluated by colony-forming units per milliliter (CFU/mL) and metabolic activity using the XTT assay only without brushing.
J Vis Exp
December 2024
School of Engineering and Materials Science, Queen Mary University of London.
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