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Relationship of Streptococcus mutans and lactobacilli to incipient smooth surface dental caries in man
Journal of Dentistry,
7, No. 3, 1979,
pp. 260-272.
Printed in Great Britain
QuarterlyDentalReview Abstracts
from current
CARIES
EDGAR W. M., GEDDES D. A. M., JENKINS G. N., RUGG-GUNN A. J. and HOWELL R. Effects of calcium glycerophosphate and sodium fluoride on the induction in vivo of caries-like changes in human dental enamel, Arch. Oral Biol. 23 (1978) 655-661. The addition of calcium glycerophosphate to a 50 per cent sucrose solution used as a mouthrinse nine times a day did not reduce areas of demineralization on enamel surfaces of 8 volunteers who did not clean their teeth for 18 days. The areas of demineralization were assessed by the Caries Index of Fehr using optical changes as the criteria. No changes were observed in plaque accumulation and fall of plaque pH after rinsing with sucrose which could be directly associated with calcium glycerophosphate. Application of 2 per cent sodium fluoride appeared to inhibit development of these induced lesions, but with a limited number of subjects the effects were not significant statistically. G. J. Pearson DUCHIN S. and Relationship of lactobacilli to dental caries in (1978) 779-780.
HOUTE J. Streptococcus mutanr and incipient smooth surface man, Arch. Oral Biol. 23
international
of Streptococcus mutans in the samples from the carious lesions. Few lactobacilli were recovered from the sound tooth surfaces and none was observed in the samples from the white spots. Marked variations were found in the concentrations of SW. murans at various points over the area sampled for a single lesion. G. J. Pearson GEDDES D. A. M., COOKE J. A., EDGAR W. M. and JENKINS G. N. The affects of frequent sucrosa mouthrinsing on the induction in vivo of caries-like changes in human dental enamel, Arch. Oral Biol. 23 (1978) 663-665. An experiment was conducted to confirm the work of Fehr that optical changes in enamel similar to early caries occurred if subjects who did not clean their teeth for a fortnight rinsed regularly (nine times a day) with a 50 per cent sucrose solution. There was a significantly smaller number of enamel changes in subjects who did not rinse with sucrose. Assessment of changes were made from photographs taken at the beginning of the study and after the 14-day period of no oral hygiene. A further photograph was taken 2 months later after the subjects had rinsed daily with a 0.2 per cent sodium fluoride (remineralizing phase). G. J. Pearson
DENTAL Samples of plaque were collected from a group of white spot or cavitated carious lesions situated on either buccal or approximal surfaces. Areas of plaque away from the carious lesions were also sampled. There was a significantly higher proportion
literature
MATERIALS
SILVEY R. G. and MYERS G. E. A clinical study of dental cements: VII. A study of bridge retainers listed with three (different) cements, J. Dent. Res. 57 (1978) 703-707.
7, No. 3, 1979,
pp. 260-272.
Printed in Great Britain
QuarterlyDentalReview Abstracts
from current
CARIES
EDGAR W. M., GEDDES D. A. M., JENKINS G. N., RUGG-GUNN A. J. and HOWELL R. Effects of calcium glycerophosphate and sodium fluoride on the induction in vivo of caries-like changes in human dental enamel, Arch. Oral Biol. 23 (1978) 655-661. The addition of calcium glycerophosphate to a 50 per cent sucrose solution used as a mouthrinse nine times a day did not reduce areas of demineralization on enamel surfaces of 8 volunteers who did not clean their teeth for 18 days. The areas of demineralization were assessed by the Caries Index of Fehr using optical changes as the criteria. No changes were observed in plaque accumulation and fall of plaque pH after rinsing with sucrose which could be directly associated with calcium glycerophosphate. Application of 2 per cent sodium fluoride appeared to inhibit development of these induced lesions, but with a limited number of subjects the effects were not significant statistically. G. J. Pearson DUCHIN S. and Relationship of lactobacilli to dental caries in (1978) 779-780.
HOUTE J. Streptococcus mutanr and incipient smooth surface man, Arch. Oral Biol. 23
international
of Streptococcus mutans in the samples from the carious lesions. Few lactobacilli were recovered from the sound tooth surfaces and none was observed in the samples from the white spots. Marked variations were found in the concentrations of SW. murans at various points over the area sampled for a single lesion. G. J. Pearson GEDDES D. A. M., COOKE J. A., EDGAR W. M. and JENKINS G. N. The affects of frequent sucrosa mouthrinsing on the induction in vivo of caries-like changes in human dental enamel, Arch. Oral Biol. 23 (1978) 663-665. An experiment was conducted to confirm the work of Fehr that optical changes in enamel similar to early caries occurred if subjects who did not clean their teeth for a fortnight rinsed regularly (nine times a day) with a 50 per cent sucrose solution. There was a significantly smaller number of enamel changes in subjects who did not rinse with sucrose. Assessment of changes were made from photographs taken at the beginning of the study and after the 14-day period of no oral hygiene. A further photograph was taken 2 months later after the subjects had rinsed daily with a 0.2 per cent sodium fluoride (remineralizing phase). G. J. Pearson
DENTAL Samples of plaque were collected from a group of white spot or cavitated carious lesions situated on either buccal or approximal surfaces. Areas of plaque away from the carious lesions were also sampled. There was a significantly higher proportion
literature
MATERIALS
SILVEY R. G. and MYERS G. E. A clinical study of dental cements: VII. A study of bridge retainers listed with three (different) cements, J. Dent. Res. 57 (1978) 703-707.