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In vitro inhibition of marginal caries-like lesions with fluoride-containing amalgam.
Oper Dent. 1994 May-Jun; 19(3):91-6.OD

Abstract

Carious lesions surrounding restorations represent one of the main causes of restoration failure. The addition of fluoride compounds to dental restorative materials prevents or reduces recurrent caries. The purpose of this study was to compare the capacity of three restorative materials to inhibit the development of recurrent caries in vitro. Thirty unrestored, noncarious premolars that were being extracted for orthodontic reasons were sectioned in half buccolingually and divided into three groups. One of the groups was restored with conventional amalgam. The second group was restored with a fluoride-containing amalgam, and the third group was restored with a glass-ionomer cement. All the samples were submitted to a medium containing Streptococcus mutans (Ingbritt strain) for 8 weeks. At the end of the 8-week incubation period, the samples were cut into 100 microns sections, soaked in Quinoline (IR = 1.62), and observed with light transmission and polarized light microscopy. The development of artificial caries in the cavity walls was measured in microns. The results show that conventional amalgam had an average caries penetration of 160 microns, fluoride-containing amalgam 46 microns, and glass-ionomer cement 11 microns. Glass-ionomer cement gave the best protection against recurrent caries.

Authors+Show Affiliations

University of Chile, Faculty of Odontology, Santiago, Chile.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

9028246

Citation

Valenzuela, V S., et al. "In Vitro Inhibition of Marginal Caries-like Lesions With Fluoride-containing Amalgam." Operative Dentistry, vol. 19, no. 3, 1994, pp. 91-6.
Valenzuela VS, Abarca AM, Silva ND, et al. In vitro inhibition of marginal caries-like lesions with fluoride-containing amalgam. Oper Dent. 1994;19(3):91-6.
Valenzuela, V. S., Abarca, A. M., Silva, N. D., Franco, M. E., & Huerta, J. M. (1994). In vitro inhibition of marginal caries-like lesions with fluoride-containing amalgam. Operative Dentistry, 19(3), 91-6.
Valenzuela VS, et al. In Vitro Inhibition of Marginal Caries-like Lesions With Fluoride-containing Amalgam. Oper Dent. 1994 May-Jun;19(3):91-6. PubMed PMID: 9028246.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - In vitro inhibition of marginal caries-like lesions with fluoride-containing amalgam. AU - Valenzuela,V S, AU - Abarca,A M, AU - Silva,N D, AU - Franco,M E, AU - Huerta,J M, PY - 1994/5/1/pubmed PY - 1994/5/1/medline PY - 1994/5/1/entrez SP - 91 EP - 6 JF - Operative dentistry JO - Oper Dent VL - 19 IS - 3 N2 - Carious lesions surrounding restorations represent one of the main causes of restoration failure. The addition of fluoride compounds to dental restorative materials prevents or reduces recurrent caries. The purpose of this study was to compare the capacity of three restorative materials to inhibit the development of recurrent caries in vitro. Thirty unrestored, noncarious premolars that were being extracted for orthodontic reasons were sectioned in half buccolingually and divided into three groups. One of the groups was restored with conventional amalgam. The second group was restored with a fluoride-containing amalgam, and the third group was restored with a glass-ionomer cement. All the samples were submitted to a medium containing Streptococcus mutans (Ingbritt strain) for 8 weeks. At the end of the 8-week incubation period, the samples were cut into 100 microns sections, soaked in Quinoline (IR = 1.62), and observed with light transmission and polarized light microscopy. The development of artificial caries in the cavity walls was measured in microns. The results show that conventional amalgam had an average caries penetration of 160 microns, fluoride-containing amalgam 46 microns, and glass-ionomer cement 11 microns. Glass-ionomer cement gave the best protection against recurrent caries. SN - 0361-7734 UR - https://www.unboundmedicine.com/medline/citation/9028246/In_vitro_inhibition_of_marginal_caries_like_lesions_with_fluoride_containing_amalgam_ L2 - https://medlineplus.gov/toothdecay.html DB - PRIME DP - Unbound Medicine ER -