Reduced dental plaque accumulation on composite gold alloy margins

Abstract

Restoration of tooth surfaces with materials that inhibit formation of heavy bacterial plaque accumulations could be important in the treatment of patients with existing oral disease or in reducing the likelihood for periodontal disease. Captek is a dental gold composite material used to produce copings for ceramometal restorations that has been reported to inhibit plaque accumulation. In this study, the oral bacteria of nine periodontally healthy subjects with a total of 42 gold composite copings were sampled. Contralateral teeth with normal tooth surfaces were also sampled as controls. The quantitative presence of forty bacteria was determined in each sample by DNA:DNA hybridization. The results indicated that the porcelain/gold composite alloy coping surfaces had significantly fewer bacteria than the control normal tooth surfaces (71% reduction). The percentage composition, however, did not differ significantly between surfaces.

A Dental Crown for Patients with Schizophrena

“…Biofilm on metals such as amalgam and gold was mostly dead (vital fluorescence [VF] technique < 8%) compared to ceramic which revealed biofilms containing highly vital microorganisms (VF = 34 -86%) [31] . Bacteria count between gold crown surfaces and normal tooth surfaces were compared via DNA-DNA hybridization [32] . Gold restorations had significantly less (71% reduction) bacteria than natural teeth, reaffirming the antibacterial property of restorative surfaces [32] .…”

“…Bacteria count between gold crown surfaces and normal tooth surfaces were compared via DNA-DNA hybridization [32] . Gold restorations had significantly less (71% reduction) bacteria than natural teeth, reaffirming the antibacterial property of restorative surfaces [32] . Within the group of ceramics, Y-TZP zirconia revealed…”

“…Various factors have been attributed to the reduction of biofilm on restoratives such as the low porosity of gold acquired through manufacturing [32] as well as complementary electrical charges between bacteria and restoration materials [37] . Additionally, hydrophobicity and greater surface roughness are associated with the propensity of plaque formation [38] .…”

Metal‐Ceramic Alloys in Dentistry: A Review

“…A proprietary bonding agent, which purportedly provides bonding between the gold and porcelain, is then applied. Although Captek technology has been available since 1995, there is surprisingly little peer‐reviewed scientific literature (other than abstracts) reporting on the technology 54–56 . A manufacturer‐supported graduate study was completed in 1995, 57 but data from this thesis have apparently not been reported in the scientific peer‐reviewed literature.…”

Effect of Margin Design and Processing Steps on Marginal Adaptation of Captek Restorations

“…Although Captek PFM restorations have also been extremely popular among many practitioners, there are only a limited number of published studies, and these studies were focused on different topics such as processing details [2], metallurgical properties [2, 3], bonding to porcelain [7], esthetics [8], antiplaque properties [9], and mechanical properties [10, 11]. Marginal fit properties were also reported [10, 12], but the controlled variables were limited to demonstrate that the accuracy of the finished crown fit was within acceptable range.…”