Detection of Microecological Phenomena in Filled Teeth I. Phenomena in Gap Between Restoration and Cavity Wall

Buchmann, G.; Klimm, W; Gabert, A; Edelmann, Johannes

doi:10.3402/mehd.v3i2.7502

Cited by 4 publications

(5 citation statements)

References 15 publications

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“…The presence of filaments bridging cracks and voids within the restoration and cavity wall, and cocci colonizing the smoother dentine surface has been reported in a study on extracted teeth by Buchmann et al . (1990).…”

Section: Discussionsupporting

confidence: 57%

A new in vitro model for the study of microbial microleakage around dental restorations: a preliminary qualitative evaluation

Matharu¹,

Spratt²,

Pratten³

et al. 2001

Int Endodontic J

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Section: Discussionsupporting

confidence: 57%

A new in vitro model for the study of microbial microleakage around dental restorations: a preliminary qualitative evaluation

Matharu¹,

Spratt²,

Pratten³

et al. 2001

Int Endodontic J

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“…Additionally, greater material susceptibility to abrasive wear is observed during mastication, as a result of water sorption and hydrolytic degradation of the polymer. This phenomenon could be explained by surface softening [56,57]. With gradual abrasion, subsequent layers of material are exposed to chemical degradation.…”

Section: Degradation Of Filler and Filler-matrix Interfacementioning

confidence: 99%

Ageing of Dental Composites Based on Methacrylate Resins—A Critical Review of the Causes and Method of Assessment

Szczesio-Włodarczyk

Sokołowski

Kleczewska³

et al. 2020

Polymers

106

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The paper reviews the environmental factors affecting ageing processes, and the degradation of resins, filler, and the filler-matrix interface. It discusses the current methods of testing materials in vitro. A review of literature was conducted with the main sources being PubMed. ScienceDirect, Mendeley, and Google Scholar were used as other resources. Studies were selected based on relevance, with a preference given to recent research. The ageing process is an inherent element of the use of resin composites in the oral environment, which is very complex and changes dynamically. The hydrolysis of dental resins is accelerated by some substances (enzymes, acids). Bonds formed between coupling agent and inorganic filler are prone to hydrolysis. Methods for prediction of long-term behaviour are not included in composite standards. Given the very complex chemical composition of the oral environment, ageing tests based on water can only provide a limited view of the clinical performance of biomaterial. Systems that can reproduce dynamic changes in stress (thermal cycling, fatigue tests) are better able to mimic clinical conditions and could be extremely valuable in predicting dental composite clinical performance. It is essential to identify procedure to determine the ageing process of dental materials.

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“…For example, it has been determined that extractable composite compounds can cause cytotoxic effects (Hanks et al, 1991;Lehmann et al, 1993;Wataha et al, 1994). In addition, it was reported that resin composite extracts can promote microbial growth (Friedl et al, 1992), which may result in caries lesions, as well as adverse tissue reactions (Buchmann et al, 1990;Suljak et al, 1995). Therefore, it has been discussed by various authors that pulpal alterations due to a resin composite filling are mainly induced by bacterial penetration 60 and proliferation within the gap between the restoration and the cavity walls (Brannstrom, 1981;Cox, 1992;Qvist, 1993).…”

Section: Introductionmentioning

confidence: 96%

Effects of Various Resin Composite (Co)monomers and Extracts on Two Caries-associated Micro-organisms in vitro

Hänsel¹,

Leyhausen²,

et al. 1998

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Previous studies have shown that extracts of various filling materials, e.g., resin composites, may influence the growth of cariogenic micro-organisms. The purpose of this study was to examine the effects of important resin composite (co)monomers (Bis-GMA, UDMA, TEGDMA, EGDMA) and extracts of two commercial dental composites with similar composition (composite A, Arabesk; composite S, Superlux) on the growth of the two cariogenic bacterial pathogens Streptococcus sobrinus and Lactobacillus acidophilus. It was found that neither the monomers Bis-GMA and UDMA, nor the comonomer EGDMA, nor the extract of composite A influenced the growth of S. sobrinus in the log phase. The comonomer TEGDMA and the extract of composite S were found to stimulate growth in the log phase, but this stimulation was not statistically significant. However, EGDMA, TEGDMA, and the extract of composite S did stimulate the total growth of S. sobrinus. In the assays with L. acidophilus, Bis-GMA, UDMA, and the extract of composite A inhibited the growth in the log phase, whereas TEGDMA stimulated it. Furthermore, EGDMA, TEGDMA, and the extract of composite S stimulated the biomass production of L. acidophilus. We conclude from our results that a release of EGDMA and TEGDMA from resin composites should be avoided due to their growth-stimulating effects on the caries-associated micro-organisms S. sobrinus and L. acidophilus.

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Detection of Microecological Phenomena in Filled Teeth I. Phenomena in Gap Between Restoration and Cavity Wall

Cited by 4 publications

References 15 publications

A new in vitro model for the study of microbial microleakage around dental restorations: a preliminary qualitative evaluation

A new in vitro model for the study of microbial microleakage around dental restorations: a preliminary qualitative evaluation

Ageing of Dental Composites Based on Methacrylate Resins—A Critical Review of the Causes and Method of Assessment

Effects of Various Resin Composite (Co)monomers and Extracts on Two Caries-associated Micro-organisms in vitro

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