Endodontic sealers after exposure to chlorhexidine digluconate: An assessment of physicochemical properties -

Final root canal irrigation should ideally maintain the physicochemical stability of root canal sealers. We seek to assess the effect of contact with 2% chlorhexidine digluconate (CHX) on the physicochemical properties of AH Plus, BioRoot™ RCS, and Pulp Canal Sealer (PCS)…

Antibacterial Activity of Root Repair Cements in Contact with Dentin—An Ex Vivo Study -

This study assessed the antibacterial characteristics of the dentin/material interface and dentin surfaces exposed to experimental hydraulic calcium silicate cement (HCSC) with or without bioactive glass (BG) replacement (20% or 40%) or mixed with a silver nanoparticle (SNP) solution (1 or 2 mg/mL), and Biodentine, TotalFill BC RRM putty and Intermediate Restorative Material (IRM). Human […]

Repair bond strength of bulk-fill composites: influence of different primers and direction of debonding stress -

The purpose of this in vitro study was to evaluate the effect of different adhesion primers on the repair bond strength of bulk-fill resin composite and short-term hydrolytic stability of the repair interface before and after accelerated aging. In addition, direction of debonding stress was examined…

Functional and aesthetical properties of single dental crowns. -

The aims of the study were to investigate functional and aesthetic properties, the composition of the alloy, and the content of hazardous elements of single dental crowns with metal skeleton and fired porcelain. Epoxy models made from full mouth impressions taken of a patient with a crown preparation of the right maxillary first permanent molar […]

Effect of exposure conditions on chemical properties of materials for surgical endodontic procedures -

This study investigated the role of aging and changes in environmental conditions on selected properties of a prototype radiopacified calcium silicate-based cement (TZ-base) with or without incorporation of silver nanoparticles or bioactive glass, and two commercial materials, Biodentine and intermediate restorative material. Materials were immersed in ultrapure water or fetal bovine serum for 28 days […]

Implantoplasty and the risk of fracture of narrow implants with advanced bone loss: A laboratory study -

In this study, the aim is to assess the impact of implantoplasty (IP) on maximum implant failure strength of narrow diameter implants of different type/design and material, with simulated advanced bone loss.

Investigation of biological effects of HEMA in 3D-organotypic co-culture models of normal and malignant oral keratinocytes -

Several in vitro studies utilizing 2-dimensional (2D) cell culture systems have linked 2-hydroxyethyl methacrylate (HEMA) with cytotoxic effects in oral mucosa and dental pulp cells. Although such studies are invaluable in dissecting the cellular and molecular effects of HEMA, there is a growing interest in the utilization of appropriate 3-dimensional (3D) models that mimic the structure of oral mucosa.

Cobalt-chromium alloys in fixed prosthodontics: Investigations of mechanical properties and microstructure -

The results from the present study demonstrated higher mechanical properties for the laser-melted and presintered milled Co-Cr, followed by the cast and milled Co-Cr specimens. In general, the Ti6Al4V demonstrated higher mechanical properties compared with CpTi4. The high mechanical properties of the laser melted Co-Cr specimens compared with the other Co-Cr specimens were consistent with those of other studies.

Biological aspects of modern dental composites -

Biological evaluation of resin-based dental composites has traditionally been based on in vitro endpoint tests with different methods to determine loss of cell viability and cell morphology changes after exposure to the material or monomer constituents. The data reveals a potential for biological effects, but clinical relevance of such data is limited. Positive allergy tests and […]

Deterioration of direct restorative materials under erosive conditions with impact of abrasion and attrition in vitro -

This article compare the cumulative impact of sequential wear on mechanical properties and appearance of a composite resin, a glass ionomer, and a glass hybrid. It was concluded that the composite resin was the most mechanically resistant to the sequential wear

De mest brukte komposittene på det norske markedet oppfyller ikke alle formelle krav i ISO-standarden -

Denne undersøkelsen viser at en oppfatning om at et komposittmateriale tilfredsstiller formelle krav i en standard hvis produktet er merket med CE eller ISO 4049 ikke uten videre medfører riktighet.De fleste medfølgende bruksanvisninger på komposittene vi undersøkte, hadde mangler i forhold til hva som kreves av oppgitt informasjon i ISO 4049:2019, og opplysningene hadde enkelte […]

Presence of 6PPD-quinone in runoff water samples from Norway using a new LC–MS/MS method -

The chemical 6PPD-quinone is highly toxic to some fish species of the Oncorhynchus and Salvelinus genera and is the oxidation product of the common car tire additive 6PPD. We present a new sample preparation method that involves liquid-liquid extraction of water samples followed by silica-based solid phase extraction prior to LC–MS/MS analysis. The new sample preparation method showed good […]

Silver release from dentine treated with combinations of silver diamine fluoride, potassium iodide and etching -

For individuals with very high to extremely high caries activity and poor control of daily oral hygiene, a simple treatment for arresting their caries activity is necessary. Silver Diamine Fluoride (SDF) has become increasingly common for this purpose due to its efficacy and ease of application. To avoid or reduce tooth discoloration after SDF treatment […]

Preparation of a fluorinated dental resin system and its anti-adhesive properties against S. mutans -

Resin system prepared exclusively with fluorinated methacrylate monomers reduced the S. mutans adhesion due to their increased hydrophobicity and decreased surface energy. Compared with Bis-GMA/TEGDMA, the FDMA/FBMA resin system also exhibited higher double bond conversion and lower water sorption and solubility

Oral lesions associated with daily use of snus, a moist smokeless tobacco product. A cross-sectional study among Norwegian adolescents -

Use of snus, a moist, smokeless tobacco product, may lead to local changes in the oral mucous membrane in the area where the snus is placed. It can also cause irreversible gingival retraction. This cross-sectional study aimed to investigate the relationship between use of snus, oral mucosal lesions (snus induced lesions) and gingival retractions among adolescents in Norway.

Association of locus Xq26.1 – 27.3 with Erosive Tooth Wear Phenotypes in a Group of Adolescents -

Erosive tooth wear is a multifactorial condition of an increasing prevalence. There is a need for discovering individual genetic predisposition for the development of this condition. Considering that the chromosome X locus was shown to be associated with dental caries, the aim of the present study was to look for the association between this locus […]