An optical investigation of dentinal discoloration due to commonly endodontic sealers, using the transmitted light polarizing microscopy and spectrophotometry. | LitMetric
The aim of this study was to establish the degree of tooth crown staining by commonly used endodontic sealers. Crown discolorations by tooth canal sealers [AH Plus (Dentsply DeTrey Gmbh, Konstanz, Germany); Endofill (Produits Dentaires SA, Vevey, Switzerland); Apexit (Dentsply DeTrey Gmbh, Konstanz, Germany); and MTA Fillapex (Angelus, Londrina, Brazil)] were tested on extracted human premolars. The samples were divided into five groups of five samples each, after root canal sealing. Five teeth were used as control groups. The spectrophotometric method was performed in order to quantify in terms of color change of the coronal part (it was also recorded a track on how the color changes over time). For the microscopic study of the extracted dental specimens subjected to this study, polarized transmitted light microscopy was used. This method involves the development of special microscopic preparations, called "thin sections". In our case, the thin section was performed on 20 prepared and obturated recently extracted teeth. The degree of discoloration was determined after one week and three months using spectrophotometry and polarized light microscopy. All sealers usually cause some degree of discoloration on the cervical aspect of the crowns that increases in time. AH Plus and Endofill caused the greatest discoloration, followed by Apexit and MTA Fillapex.
ENT and Head and Neck Research Center and Department, The five senses Health Institute, Firoozgar Hospital, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
Statement Of The Problem: Success of pulpotomy of primary teeth depends on biological and cytotoxic effects of pulp capping agents. Mineral trioxide aggregate (MTA), Biodentine, calcium enriched mixture (CEM) cement, and ferric sulfate (FS) are among the commonly used pulp capping agents (PCAs) for pulpotomy, and their successful application has been previously evaluated.
Purpose: This study aimed to compare the cytotoxicity of PCAs against mesenchymal stem cells isolated from human exfoliated deciduous teeth (SHEDs).
Enterococcus faecalis is a common cause of nosocomial infections and is frequently associated with endodontic infections. However, there is a scarcity of studies addressing the genetic characterization of E. faecalis lineages most commonly associated with root canals.
Background: Maxillary molars are commonly anesthetized via buccal infiltration. A patient's mouth opening during maxillary buccal infiltration can influence dental treatment. Hence, this study aimed to evaluate and compare the influence of palatal root length on the efficacy of 2% lidocaine in 1:80000 adrenaline for maxillary buccal infiltration (MBI) between the open- and closed-mouth techniques.
Introduction: To systematically review the available literature reporting on genetic mutations leading to dento-maxillofacial malformations in mice.
Materials And Methods: An electronic search was performed across Embase, PubMed, Web of Science, and Scopus databases up to May 2024, targeting all in vivo studies on gene mutations causing dento-maxillofacial deformities in mice. Studies reporting oral clefts were excluded.
Aim Using two classifications, this study assessed root morphology and canal configuration and measured the Dentin thickness (DT) and canal shapes. Methods Cone beam computed tomography (CBCT) with 400 Mandibular Incisors was collected and assessed for the number, length, curvature of roots, number of canals, bifurcation level, configurations based on Vertucci's and Ahmed's classification, DT and canal shape at 3, 6, 9 mm from the apex. The collected data was subjected to statistical analysis with a level of significance at p<0.
