The Modified Model Cavity Method for Assessing Antibacterial Properties of Dental Restorative Materials

Meryon, S.D.; Johnson, S.G.

doi:10.1177/00220345890680051701

Cited by 20 publications

(18 citation statements)

References 14 publications

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“…These results confirm the findings of previous studies [Herrera et al, 1999;Palenik and Setcos, 1996]. The growth-inhibitory effect of GICs has been attributed to the release of fluoride [Forss et al, 1991;Meryon and Johnson, 1989;Yap et al, 1999]. However, only a few studies showed a direct correlation between fluoride release and antibacterial properties of GICs [Friedl et al, 1997;Loyola Rodriguez et al, 1994;Palenik et al, 1992].…”

Section: Discussionsupporting

confidence: 88%

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Antibacterial Activity of Restorative Dental Biomaterials in vitro

et al. 2002

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This study investigated the antibacterial effects against Streptococcus mutans of a fine-hybrid resin composite (FH-RC; Tetric ceram), an ion-releasing resin composite (Ariston pHc), a self-curing glass ionomer cement (SC-GIC; Ketac-Molar), a resin-modified GIC (RM-GIC; Photac-Fil), and a zinc oxide eugenol cement (ZOE; IRM). In a novel assay, bacterial suspensions were placed into narrow 20-µl conical cavities within the materials. After 0, 4, 8, 24, 48 h and 1 week of incubation, the suspensions were removed from the restoratives and the numbers of viable bacteria were determined. After incubation periods of 8 h or more, all restorative materials except the FH-RC showed significant growth inhibition when compared with controls. The strongest antibacterial activity was observed with ZOE. The inhibitory effect of Ariston pHc was similar to that of the SC-GIC and the RM-GIC. In the second assay, growth inhibition was evaluated in liquid cultures by incubating eluates of the materials with suspensions of S. mutans. Bacterial growth was determined up to 6 h by measuring absorption at 600 nm. The most marked inhibitory effect was again observed with ZOE. The SC-GIC caused a significant inhibition at all time intervals but the FH-RC, the RM-GIC and Ariston pHc exhibited no significant antibacterial effects. It is recommended to employ more than one method for assessing the antibacterial potential of restorative materials. Long-term clinical trials are necessary to determine whether the antimicrobial effects of dental materials are able to reduce the risk of secondary caries formation.

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Section: Discussionsupporting

confidence: 88%

“…When using eluates, the arbitrarily selected extraction conditions for the restorative materials may influence the results [Meryon and Johnson, 1989]. In addition, the BSWM assay is suitable for longterm studies because time of exposing bacterial suspensions to dental materials is not limited by restrictions of the experimental setup.…”

Section: Discussionmentioning

confidence: 99%

Antibacterial Activity of Restorative Dental Biomaterials in vitro

et al. 2002

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“…Pronounced antimicrobial effects are found in in vitro studies with glass ionomer cement (GIC) [Tobias et al, 1985;Meryon and Johnson, 1989;Paleniketal., 1992;Loyola-Rodriguez et al, 1994], Some in vivo studies showed less cariogenic plaque adjacent to GIC restorations [Berg et al, 1990;Forss et al, I99la;Hallgren et al, 1994], although plaque inhibition was not always confirmed [van Dijken et al, 1991;Forss et al, 1991b]. A proportional reduction of mutans streptococci in plaque and the facilitation of remin eralization of enamel lesions as a result of fluoride release [McLean and Wilson.…”

mentioning

confidence: 99%

In vivo Cariostatic Effect of Resin Modified Glass lonomer Cement and Amalgam on Dentine

Kreulen¹,

Soet²,

Weerheijm³

et al. 1997

Caries Res

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Fluoride-releasing materials have been reported to be bactericidal in vitro. This may be of benefit to modern dentistry, which is directed to the preservation of tooth tissue during restorative treatment. Little is known about in vivo effects. The aim is to investigate the influence of a resin-modified glass ionomer cement (RM-GIC) on carious dentine that remains under restorations, compared to amalgam. Using a split mouth design, 40 molar pairs in 40 patients (mean age 14.9 years) were selected, based on clinically and radiographically diagnosed occlusal dentine caries. Under aseptic conditions, the enamel was removed and the carious dentine was sampled just beneath the dentino-enamel junction using a round bur. Without further removal of carious dentine, the molars of a pair were alternately restored with RM-GIC or amalgam. The colour and the consistency of the carious dentine were assessed. The samples were processed for microbiological determination of total viable counts (TVC), mutans streptococci (MS), and lactobacilli (LB). After 6 months the molars were reopened, similarly sampled and evaluated, and then permanently restored after complete caries removal. For both materials a substantial decrease in the numbers of TVC, MS and LB was found after the 6-month period. Also a positive effect was observed on the colour and the consistency of the remaining carious dentine, which was comparable for the two materials. RM-GIC showed a significantly larger decrease in counts of MS and LB than amalgam, but not for TVC. Since in only few cavities the number of bacteria decreased under the level of detection, it is still considered essential to remove all carious dentine during restorative treatment.

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“…During the reopening of the cavity and removal of remaining decayed dentine, the mechanical procedures may injure the pulp, increasing the risk of pulp exposure and submit the patient to an additional appointment 10 . Regarding the sealing material, glass-ionomer cement (GIC) has proved to have antimicrobial effects [16][17][18] . Some in vivo studies have shown less cariogenic plaque adjacent to GIC restorations 19 and other studies have demonstrated that enamel lesions can be easier remineralized as a result of fluoride release 20 and consequently diminish the risk for recurrent caries at cavity enamel margins 21 .…”

Section: Discussionmentioning

confidence: 99%

Indirect pulp treatment without re-entry in a permanent tooth: 36 months of follow-up

Simone

Steiner‐Oliveira

Braga

et al. 2014

RGO, Rev. Gaúch. Odontol.

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RESUMOUm novo conceito clínico no tratamento de lesões de cárie profunda é o tratamento pulpar indireto sem reabertura da cavidade. Tem sido demonstrado que a remoção completa da dentina cariada tornou-se desnecessária após selamento total do dente, pois os microorganismos remanescentes da dentina afetada não se proliferariam ou morreriam. Este relato de caso descreve o tratamento de lesões de cárie profunda de uma menina de 11 anos de idade com grande destruição coronária no primeiro molar permanente mandibular. As paredes dentinárias infectadas foram removidas com instrumentos manuais e a dentina afetada remanescente foi preenchida com cimento de ionômero de vidro e resina composta. Após 36 meses de acompanhamento, não se observou nenhum sinal e sintoma clínico e radiográfico de dano pulpar. Em conclusão, o tratamento pulpar indireto foi considerado uma boa alternativa para o tratamento de lesões de carie profunda, já que reduziu o risco de exposição pulpar, devido a não reabertura da cavidade, economizou tempo clínico para o paciente e o dentista e paralisou a progressão da lesão com aumento da densidade radiográfica e ausência de qualquer sintomatologia dolorosa.Termos de indexação: Cárie dentária. Capeamento da polpa dentária. Estudos longitudinais. Dentição permanente.

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The Modified Model Cavity Method for Assessing Antibacterial Properties of Dental Restorative Materials

Cited by 20 publications

References 14 publications

Antibacterial Activity of Restorative Dental Biomaterials in vitro

Antibacterial Activity of Restorative Dental Biomaterials in vitro

In vivo Cariostatic Effect of Resin Modified Glass lonomer Cement and Amalgam on Dentine

Indirect pulp treatment without re-entry in a permanent tooth: 36 months of follow-up

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