Investigation on the antimicrobial activity of chitosan-modified zinc oxide-eugenol cement -

The present study showed that a ZOE-based material has an antibacterial effect and that incorporating CH or COS may increase the antibacterial effect depending on the bacterial species. The total release of eugenol from the materials was stable for up to 18 weeks immersion in water. Eugenol therefore contributed to the antibacterial effect on all the material surfaces investigated. S. mutans exhibited the highest susceptibility to eugenol. The compressive strength of the modified materials was reduced but still met the requirements in ISO 3017.

Bond strength between dentine and a novel fast-setting calcium silicate cement with fluoride -

The aim of this study was to evaluate the dentine bond strength of a novel fast‐setting calcium silicate cement (Protooth) versus a calcium hydroxide‐based cement (Dycal), a calcium silicate cement (ProRoot MTA), and a glass ionomer cement (Ketac‐Molar). Mid‐root dentine slices of 1 mm thickness were obtained from human maxillary incisors. After enlarging the lumen […]

Erosive properties of sour sweets and drinks -

Dental erosion has a multifactorial etiology with contributions from chemical, biological and behavioral factors. In terms of chemical factors, type of foods and drinks is important. The chemical factors that determine whether foods and drinks are erosive are low pH, type of acid, meaning a low acid dissociation constant (pKa), high buffer capacity and low […]

Antimicrobial photodynamic therapy for treatment of oral biofilm associated diseases – where we are -

Abstract from Håkon Valens lecture at symposium PDT-4. Human antimicrobial PDT. ESP-IUPB World Congress, Light & Life, Barcelona, Spain. August 25-30. 2019. Bacteria in the oral cavity lives primarily in polymicrobial biofilms. Oral mature biofilms may contain several hundred different bacterial species, and over 600 different species have been shown to colonize the oral cavity. […]

Antibacterial photodynamic therapy for treatment of oral biofilms related to periodontal and peri-implant diseases -

Abstract from Håkon Valens lecture at symposium MED-10 Dentistry. (Organized by Ellen Bruzell). ESP-IUPB World Congress, Light & Life, Barcelona, Spain. August 25-30. 2019. Oral biofilm formation around teeth and dental implants may cause inflammation of the surrounding tissue, which may lead to breakdown of the attachment of the tooth or implant. Ultimately, if left […]

Photostability of an anionic porphyrin in natural deep eutectic solvents (NADES) -

Abstract from Krister Grønliens lecture at symposium PDT-4. Human antimicriobial PDT. ESP-IUPB World Congress, Light & Life, Barcelona, Spain. August 25-30. 2019. Natural deep eutectic solvents (NADES) is a group of eutectics that is based solely on environmental-friendly (“Green”) components. These solvents have unique solubilizing properties; i.e. they are more polar than water but can […]

Light sources and light-dependent procedures in dentistry -

Abstract from Ellen Bruzells lecture at symposium MED-10 Dentistry. (Organized by Ellen Bruzell). ESP-IUPB World Congress, Light & Life, Barcelona, Spain. August 25-30. 2019. Dental personnel encounter a number of optical sources emitting a broad spectrum of wavelengths. Along with the usefulness, to various extents, of optical radiation in treatment and diagnostics, comes the risk […]

A comparison of Norwegian and overseas made dental metallic crowns -

The study revealed major deficiencies for both Norwegian and overseas made crowns regarding conformity between composition and the stated declaration

Influence of Fibrinogen on Staphylococcus epidermidis Adhesion Can Be Reversed by Tuning Surface Nanotopography -

Surface modifications in the nanoscale regime have shown promising potential in the combat against bacterial adhesion and colonization of surfaces. However, detailed knowledge of how the bacteria–substrate interactions occur is still limited.

Establishing a macrophage model with relevance for oral methacrylate monomer exposures: Attenuated Staphylococcus aureus-induced cytokine release from human macrophages -

Leakage of unpolymerized methacrylate monomers after placement of methacrylate-containing polymeric dental materials leads to human exposure. Based on studies using murine macrophages and LPS from Escherichia coli (E. coli), dental monomers like 2-hydroxyethyl methacrylate (HEMA) are known to inhibit lipopolysaccharide (LPS) induced cytokine release.

The frequency of enamel and dentin caries lesions among elderly Norwegians -

The article describe the distribution of enamel-, dentin-, root- and secondary caries within an elderly population in Northern-Norway.

Comparison of sandblasted, ground and melt-etched zirconia crowns regarding adhesion strength to resin cement -

The aim is to compare the adhesion between zirconia and cements attained with melt-etching with potassium hydrogen difluoride, KHF2, with that found when such traditional surface treatments as sandblasting and ceramic stone grinding are employed.

Treatment decisions regarding caries and dental developmental defects in children a questionnaire-based study among Norwegian dentists -

When dentists are treating children with dental caries or DDDs, they must decide the most appropriate treatment in each case. The results of the present study showed a notable disparity between clinician’s
treatment choices. In summary, the clinicians based their treatment choice mostly on patient cooperation, prognosis of the tooth and own experience. The results indicate that Norwegian dentists in PDS evaluate each case individually and base their decisions on what they consider is the best for the individual child.

An update on erosive tooth wear – prevalence, registration, etiology, genetic and treatment principles -

There is no standard treatment for damages caused by erosive tooth wear, and choice of treatment strategy should be determined on individual basis with emphasis on the minimal invasive intervention.

Réparation des restaurations défectueuses – Connaissances et attitudes thérapeutiques en France -

Résumé/implication clinique Le concept de réparation des restaurations défectueuses (plutôt que leur remplacement complet) fait partie des points clés de l’intervention minimale en cariologie. Cet article présente les résultats d’une enquête par questionnaire évaluant les attitudes cliniques et les connaissances en matière de prise en charge des restaurations défectueuses réalisée auprès d’une population de chirurgiens-dentistes […]

Prevention of snus use: Attitudes and activities in the Public Dental Service in the south‐eastern part of Norway -

Dental health care professionals have the opportunity to play a key role in tobacco prevention and cessation among adolescents. Snus use has increased in Norway, especially in the age group 16–24, whereas there has been a decline in smoking. This study investigated attitudes and activities related to snus prevention among dental health care professionals working in the Public Dental Service (PDS) in south‐eastern Norway.

Effect of methacrylated chitosan incorporated in experimental composite and adhesive on mechanical properties and biofilm formation -

The results of this study show that CH-MA (CH-MA) may be incorporated into a composite and into an adhesive to reduce biofilm formation on their surfaces. The mechanical properties of the composite were challenged, but flexural strength measurements still met the requirement set in ISO 4049, whereas no differences were observed for the bonding properties of the adhesives.

Thermal induced deflection of a porcelain–zirconia bilayer: Influence of cooling rate -

To determine the thermal expansion of a porcelain (VM9) and tetragonal zirconia (Y-TZP) as well as the deflection upon re-heating and cooling of a bilayer fabricated from these two materials after slow and rapid cooling during initial fabrication.

Bleaching of the Discolored Traumatized Tooth -

This chapter in “Textbook and Color Atlas of Traumatic Injuries to the teeth” focuses on the treatment of discolored traumatized teeth, most of them being non‐vital and subsequently, endodontically treated. Tooth bleaching based upon hydrogen peroxide as the active agent, applied directly or produced in a chemical reaction from sodium perborate or carbamide peroxide, must […]

Debonding mechanism of zirconia and lithium disilicate resin cemented to dentin -

To evaluate debonding mechanism of zirconia and lithium disilicate cemented to dentin mimicking what could occur in a clinical setting. A null hypothesis of no difference in tensile bond strength between groups of zirconia and lithium disilicate cemented with resin cements was also tested.