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Biomedical subjects

P Chantler

Publications and source records attributed to P Chantler.

7 recordsLinked to original sources
PubMed1989

Gluma dentin adhesive: effectiveness and shelf life.

The purpose of this study was to test the effectiveness and shelf life of a commercially available glutaraldehyde/methacrylate dentin adhesive (Gluma). The measurement of marginal contraction gaps in 320 cavities restored over a period of 415 days was the basis for these determinations. The results showed that Gluma dentin adhesive was more effective with one of the two composite restorative materials used for the study, and that the shelf life of Gluma exceeded 415 days.

Aldehydes↗
PubMed1989

The development of a composite restorative system.

Composite resin restorative materials have been used in dental practice for over 25 years. The original composite resins were subjected to discolouration and marginal breakdown. These problems have largely been overcome with the exception of marginal gaps at the dentine-restoration interface. The introduction of dentine adhesives has reduced but not eliminate this problem. This study shows how the marginal gaps at the dentine-restoration interface were significantly reduced firstly by the introduction of an intermediate resin and then further by using a dentine adhesive.

Adhesives↗
PubMed1988

Glutaraldehyde-methacrylate dentine adhesive: the relationship between cavity site and marginal contraction gaps.

Previous studies have shown that dentine adhesives reduce or eliminate contraction gaps in composite restorations. This study examined the relationship between cavity site and contraction gaps when two dentine adhesives were used in combination with two composites. One hundred and fifty-two cavities, each measuring 2.0 mm diameter and 1.5 mm depth, were prepared on side surfaces of extracted teeth, with each surface classified into three levels: upper, middle and lower. The dentine adhesives and composites were randomly assigned to the cavities. Four pre-determined, diametrical measurements of contraction gaps were made for each restored cavity using a Nikon Measurescope. Measurements yielded overall mean contraction gaps of 0.229, 0.262, and 0.260 for upper, middle and lower levels on the crown; the differences between means were not statistically significant. Type of dentine adhesives and composites influenced the size of contraction gaps rather than cavity site.

Composite Resins↗
PubMedDate not supplied

Effectiveness of a universal adhesive on dentine--an in-vitro study.

The purpose of this study was to test the effectiveness of a universal bonding agent (Prisma Universal Bond) when used in dentine cavities. The measurement of marginal contraction gaps was the basis for determining the effectiveness of this bonding agent. The use of the bonding agent led to a significant reduction in restoration marginal gaps. Thermocycling of restorations with the bonding agent resulted in a widening of the marginal gaps though this was not significant. It was interesting to note that some thermocycled restorations showed no marginal gaps.

Adhesives↗