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Biomedical subjects

L M Silverstone

Publications and source records attributed to L M Silverstone.

At least 19 recordsLinked to original sources
PubMed1977

Sealant retention and effects on occlusal caries after 2 years in a public program.

A clinical trial of one application of Nuva-Seal fissure sealant was conducted under School Dental Service conditions in a low-income area of London. The sealant was applied to one of a cariesfree pair of permanent teeth by schools' dentists, the other tooth being left as a control. One examiner, who did not apply the sealant, conducted examinations at baseline, after 6 months, and after 2 years. There were 118 children, initially aged 5-12, who remained in the trial after 2 years. The sealant was fully retained on 27.4 % of the teeth, partially retained on 40.6 %, and missing on 17.9 %. The remaining 14.1 % of teeth had been restored. There was no statistically significant difference between subjects who had less decay in sealed teeth and those who had less decay in control teeth. The sealant was 13.6 % effective (not significant, P less than 0.4) in preventing caries in sealed teeth. These results are less favorable than those in other trials reported. The potential role of fissure sealants in a School Dental Service is discussed.

Adolescent↗
PubMed1976

Should I be using pit and fissure sealants or amalgam?

Results of many trials have shown that fissure sealants can have a highly significant effect in the prevention of occlusal caries. The ultraviolet light cured materials appear to produce the most succesful and reproducible results. No evidence of caries or demineralization has been reported which could be related to acid etching of enamel. Several studies have shown that etched enamel, not covered by resin, will be remineralized on contact with oral fluid. There is evidence to support the argument that a small amount of undiagnosed caries at the base of the fissure would be arrested by the application of sealant. Larger carious lesions must be restored with a suitable material. Microleakage occurs at the margins of restorations as demonstrated in vitro by the use of an artificial caries technique in which 'outer' and 'cavity wall' lesions are produced. The incidence of cavity wall lesions is less if a composite material, rather than amalgam, is used. Microleakage may be decreased further by application of resin to the composite/enamel margins.

Adolescent↗