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Biomedical subjects

P J Plasmans

Publications and source records attributed to P J Plasmans.

At least 19 recordsLinked to original sources
PubMed1992

Fabrication times for indirect composite resin restorations.

Fabrication times for indirect posterior composite resin restorations were recorded in a prospective clinical efficacy study. Four operators completed 132 one-visit inlays and onlays utilizing a new indirect posterior composite resin system (ICS). The mean time needed for the fabrication of one ICS restoration was 90 min, including the 'laboratory time'. When two restorations were provided simultaneously, the overall mean fabrication time was 120 min. The fabrication times were significantly influenced by the operator and the number of restorations. In several clinical phases a 40 per cent difference in mean fabrication time could be identified between operators. The extent of the restoration had no influence on mean fabrication time. The results of this study are considered to provide some indication of the cost-effectiveness of ICS restorations.

Adult↗
PubMed1989

Transverse resistance of composite resin restorations on dentin.

The transverse resistance of a dentin-bonded composite resin restoration was tested. Dentin and enamel surfaces of human molars were pre-treated differently. The specimens were stored for various periods. The presence of enamel led to a transverse resistance significantly higher than when only dentin was present. When enamel was present, additional etching of dentin gave a lower resistance. This was possibly caused by the formation of a soluble monite precipitate. Etching of dentin without the presence of enamel gave a value significantly higher than the bond strength to unetched dentin.

Composite Resins↗
PubMed1989

[Dowel and core systems for endodontically treated molars--in vitro loading].

The restoration of broken down pulpless molar teeth generally implies the provision of a cast post and core with a crown. In this experiment the failure resistance of some restoration methods utilizing amalgam and composite resin was investigated under an oblique load. Significant differences could be detected between the cast dowel and core, the methods utilizing composite resin and the methods utilizing amalgam. All systems could resist forces of more than 1000 Newton.

Crowns↗
PubMed1987

Treatment time analysis for extensive amalgam restorations.

The treatment times for the fabrication of Extensive Amalgam Restorations (EAR) as recorded in a longitudinal clinical trial at the Dental School in Nijmegen were analyzed. 269 EAR's with different retention methods were made on molars by three operators. A mean total treatment time of 60 min was found. The factor operator had a significant influence on all treatment phases resulting in a 26% difference in total treatment time between operators. Also significant influences were found in some treatment phases for the factor retention, side location of the tooth and extension of the restoration. The results of this study with regard to treatment times must be considered from the perspective of the quality of the care provided.

Dental Amalgam↗