English
norskBlar i forfatter "Nilsen, Bo Wold"
Viser treff 1-9 av 9
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Airborne exposure to gaseous and particle-associated organic substances in resin-based dental materials during restorative procedures
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-16)Dental composite dust has been shown to act as a vehicle for methacrylates in vivo/in vitro. The objective of this study was to assess airborne exposure of dental personnel to gaseous and particle‐associated organic constituents from resin‐based dental materials in a simulated clinic. Sampling of total aerosol fractions and gaseous substances was performed by dental students carrying particle filters ... -
Dose- and time-dependent effects of triethylene glycol dimethacrylate on the proteome of human THP-1 monocytes
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-07-27)Triethylene glycol dimethacrylate (TEGDMA) is commonly used in polymer resinbased dental materials. This study investigated the molecular mechanisms of TEGDMA toxicity by identifying its time- and dose-dependent effects on the proteome of human THP-1 monocytes. The effects of different concentrations (0.07– 5 mM) and exposure times (0–72 h) of TEGDMA on cell viability, proliferation, and morphology ... -
Heat Development in the Pulp Chamber During Curing Process of Resin-Based Composite Using Multi-Wave LED Light Curing Unit
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-08)<i>Objective</i>: The study aimed to investigate factors contributing to heat development during light curing of a flowable bulk-fill resin-based composite (SDR<sup>TM</sup>, Lot # 602000876, Dentsply Sirona, Konstanz, Germany) (RBC).<p><p> <i>Materials and Methods</i>: Temperatures were measured with calibrated thermocouples. A multi-wave light-emitting diode (LED) light curing unit (LCU) was ... -
How does indirect air-cooling influence pulp chamber temperature in different volume teeth and absence/presence of resin-based composite during light curing?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-24)<p><b> Background</b> Light-curing of materials during restorative dental procedures poses a risk for pulp tissue overheating. Therefore, the aim of this study was to investigate the effect of indirect air-cooling on pulp chamber temperatures during light-curing of varying volume teeth and absence/presence of resin-based composite (RBC) at different exposure time. <p><b> Methods</b> The ... -
Hvordan kartlegger og forstår tannhelsepersonell begrepet «store vansker med psykisk og sosial mestring» i forbindelse med bittavvik?
(Journal article; Tidsskriftartikkel, 2022)<p>I 2020 ble det innført en subjektiv vurdering i refusjonssystemet for kjeveortopedi. Studiens mål var å undersøke hvordan tannhelsepersonell kartlegger og forstår begrepet «store vansker med psykisk og sosial mestring» i forbindelse med bittavvik, samt hva de synes om endringene i refusjonssystemet. <p>Studien benyttet en «mixed method» tilnærming med bruk av fokusgrupper og spørreskjema. Digitale ... -
Light-curing units used in dentistry: Effect of their characteristics on temperature development in teeth
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-25)This study aimed to investigate pulp chamber and surface temperature development using different LED light curing units (LCUs). Eight brands of LED-LCUs were tested in a laboratory bench model. The pulp chamber and surface temperature were recorded with a type T thermocouple and infrared cameras, respectively. The highest pulp chamber and surface temperature increase was 6.1±0.3°C and 20.1±1.7°C, ... -
A literature review on the diagnosis and non-invasive treatment of small caries lesions
(Master thesis; Mastergradsoppgave, 2012-05-29)Diagnosis and treatment of the caries disease and post-treatment follow-up are interconnected concepts. The aim of the study was to map out the diagnostic methods available for early caries lesions, the existing non-invasive caries treatment, and in what way the follow-ups of these treatments are conducted. The selection of articles was based on a primary search using the PubMed search engine, ... -
Methacrylates in polymer-resin based dental materials: Assessment of exposure and biological effects
(Doctoral thesis; Doktorgradsavhandling, 2018-05-04)Materials used in dentistry are largely polymer-resin based dental materials (PRMs). PRMs contain methacrylates and organic additives that may cause adverse effects in exposed patients and dental personnel. The purpose of this thesis was to study biological effects of one of the most commonly used methacrylate in PRMs, and to investigate how patients and dental health personnel may be exposed to ... -
Quantification of porosity in composite resins delivered by injectable syringes using X-ray microtomography
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-06)<i>Objective</i>: To assess whether composite polymer resin delivered in compules include pores and the possible effect on the amount of porosity in dental restorations.<p> <p><i>Method and materials</i>: Original compules containing unpolymerised composite polymer resin (CPR) were scanned in a micro-CT. Four products were examined, which comprised universal composites (Herculite XRV Ultra, Ceram.X ...
