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Artificial recurrent caries in glass ionomer-lined amalgam restorations.
Am J Dent. 1990 Jun; 3(3):89-93.AJ

Abstract

The purpose of this study was to examine artificial recurrent caries when a conventional glass ionomer liner was placed under amalgam restorations. An additional aim was to evaluate the effect of using an unfilled resin with or without etching on the margins of the amalgam restoration. Class V preparations in extracted third molars were used with gingival margins on root surfaces. Ten restorations were used for each of the following groups: 1) Amalgam alone; 2) Two layers of copal varnish and amalgam; 3) Glass ionomer, amalgam; 4) Glass ionomer, amalgam, unfilled resin; 5) Glass ionomer, amalgam, acid-etching, unfilled resin. The teeth were thermocycled and artificial caries were created using a liquid system acidified to pH 4.10 and saturated with HAP but without fluoride. The teeth were sectioned, polished and photographed using polarized light. Areas of recurrent caries were measured using a sonic digitizing pad. The data were analyzed using ANOVA and Duncan's Multiple Range Test. Areas for enamel lesions for the different groups were: 1) 1.29 +/- 0.41; 2) 1.61 +/- 0.49; 3) 0.92 +/- 0.26; 4) 0.87 +/- 0.31; 5) 0.99 +/- 0.39. Root lesions areas were: 1) 2.17 +/- 0.35; 2) 1.90 +/- 0.40; 3) 1.40 +/- 0.27; 4) 0.82 +/- 0.25; 5) 1.34 +/- 0.31. Duncan's groups for root lesions were A = B/ C = D/ and E separately. This study indicates that artificial recurrent caries under amalgam can be reduced with a conventional glass ionomer. An additional benefit was observed when unfilled resin was placed on the cavosurface margins but not when it was acid-etched first.

Authors+Show Affiliations

University of Texas Health Science Center at San Antonio.No affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

2076235

Citation

Garcia-Godoy, F, and M E. Jesen. "Artificial Recurrent Caries in Glass Ionomer-lined Amalgam Restorations." American Journal of Dentistry, vol. 3, no. 3, 1990, pp. 89-93.
Garcia-Godoy F, Jesen ME. Artificial recurrent caries in glass ionomer-lined amalgam restorations. Am J Dent. 1990;3(3):89-93.
Garcia-Godoy, F., & Jesen, M. E. (1990). Artificial recurrent caries in glass ionomer-lined amalgam restorations. American Journal of Dentistry, 3(3), 89-93.
Garcia-Godoy F, Jesen ME. Artificial Recurrent Caries in Glass Ionomer-lined Amalgam Restorations. Am J Dent. 1990;3(3):89-93. PubMed PMID: 2076235.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Artificial recurrent caries in glass ionomer-lined amalgam restorations. AU - Garcia-Godoy,F, AU - Jesen,M E, PY - 1990/6/1/pubmed PY - 1990/6/1/medline PY - 1990/6/1/entrez SP - 89 EP - 93 JF - American journal of dentistry JO - Am J Dent VL - 3 IS - 3 N2 - The purpose of this study was to examine artificial recurrent caries when a conventional glass ionomer liner was placed under amalgam restorations. An additional aim was to evaluate the effect of using an unfilled resin with or without etching on the margins of the amalgam restoration. Class V preparations in extracted third molars were used with gingival margins on root surfaces. Ten restorations were used for each of the following groups: 1) Amalgam alone; 2) Two layers of copal varnish and amalgam; 3) Glass ionomer, amalgam; 4) Glass ionomer, amalgam, unfilled resin; 5) Glass ionomer, amalgam, acid-etching, unfilled resin. The teeth were thermocycled and artificial caries were created using a liquid system acidified to pH 4.10 and saturated with HAP but without fluoride. The teeth were sectioned, polished and photographed using polarized light. Areas of recurrent caries were measured using a sonic digitizing pad. The data were analyzed using ANOVA and Duncan's Multiple Range Test. Areas for enamel lesions for the different groups were: 1) 1.29 +/- 0.41; 2) 1.61 +/- 0.49; 3) 0.92 +/- 0.26; 4) 0.87 +/- 0.31; 5) 0.99 +/- 0.39. Root lesions areas were: 1) 2.17 +/- 0.35; 2) 1.90 +/- 0.40; 3) 1.40 +/- 0.27; 4) 0.82 +/- 0.25; 5) 1.34 +/- 0.31. Duncan's groups for root lesions were A = B/ C = D/ and E separately. This study indicates that artificial recurrent caries under amalgam can be reduced with a conventional glass ionomer. An additional benefit was observed when unfilled resin was placed on the cavosurface margins but not when it was acid-etched first. SN - 0894-8275 UR - https://www.unboundmedicine.com/medline/citation/2076235/Artificial_recurrent_caries_in_glass_ionomer_lined_amalgam_restorations_ L2 - https://medlineplus.gov/toothdecay.html DB - PRIME DP - Unbound Medicine ER -