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Biomedical subjects

L W Ripa

Publications and source records attributed to L W Ripa.

At least 37 records · Page 2Linked to original sources
PubMed1988

Caries inhibition of mixed NaF-Na2PO3F dentifrices containing 1,000 and 2,500 ppm F: 3-year results.

The 3-year DMFS increments of 2,509 children were compared. Group 1 used a conventional Na2PO3F dentifrice (1,000 ppm F) and served as the active control. Groups 2 and 3 used mixed-fluoride dentifrices containing equimolar amounts of NaF and Na2PO3F, providing total fluoride concentrations of 1,000 and 2,500 ppm F, respectively. Dentifrice use was unsupervised in the subjects' homes. There were no statistically significant differences (F-test) between the 3-year DMFS increments of the dentifrice groups, nor were there any significant differences between the dentifrice groups when the analysis included subject compliance and caries risk.

Child↗
PubMed1987

Topical fluorides: a discussion of risks and benefits.

Inadvertent ingestion of fluoride from topical procedures poses the risk of dental fluorosis in age-susceptible users. This risk can be minimized for mouthrinsing by restricting it to those above the age-susceptible limit. Operators administering topical fluoride treatments can take practical precautions that have been shown to reduce the amount of fluoride retained and, thus, reduce ingestion. Clinical and epidemiological studies have failed to establish that dentifrice ingestion by young children constitutes a serious fluorosis risk. Discussion of risk must consider the effect of perceived risks upon the public.

Child↗
PubMed1985

The surface-specific caries pattern of participants in a school-based fluoride mouthrinsing program with implications for the use of sealants.

This paper describes the surface-specific changes in the DMFS after seven years of a school-based mouthrinsing program occurring in the elementary schools of the fluoride-deficient Three Village Central School District, Long Island, New York. The effectiveness of mouthrinsing was evaluated annually by comparing the caries prevalence of a random sample of participants to that of Three Village elementary schoolchildren examined in 1975, prior to the beginning of the program. Because sixth-grade children rinsed the longest and had the longest exposure to the caries challenge, only sixth-grade children who participated in the program are included in the analysis. Overall, they experienced a 50 percent reduction in dental caries; the reduction was not uniformly experienced by all surfaces. Proximal surface caries showed the greatest rate of change but the least absolute change, because the amount of proximal carious lesions was low initially. Occlusal surfaces showed the greatest absolute reduction in dental caries, whereas buccolingual surfaces had the lowest percentage reduction. The majority of the decayed or filled surfaces, 94 percent, involved pits or fissures. Therefore, it was concluded that the combined use of sealants and weekly fluoride rinsing could produce a virtual elimination of dental decay in elementary schoolchildren.

Child↗