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Effect of a novel ceramic filling material on plaque formation and marginal gingiva.
Umeå University, Faculty of Medicine, Odontology, Dental Hygiene.
Umeå University, Faculty of Medicine, Odontology, Dental Hygiene.
2002 (English)In: Acta Odontologica Scandinavica, ISSN 0001-6357, Vol. 60, no 6, 370-374 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this clinical investigation was to evaluate a novel ceramic (CF) filling material (DoxaDent) compared to resin composite (RC) and enamel in regard to plaque formation and gingival inflammation. The CF material is inorganic, non-metallic, and contains calcium aluminate, silicate, and water. To make intra-individual comparisons possible, each participant had at least one set of three test surfaces: two Class V restorations with subgingival cervical margins (one of the novel CF material and one of a hybrid RC) and one non-filled enamel surface (E). The amounts of plaque, gingival crevicular fluid, and clinical signs of gingival inflammation were intra-individually compared in 20 sets of the three test surfaces. In a cross-sectional study (CSS), the effect of oral hygiene on plaque formation and gingivitis around the surfaces was evaluated. In a following 10-day experimental gingivitis study (EGS), plaque formation and the induction of gingivitis during refrain from oral hygiene was compared. In the CSS, no significant differences were found between the surfaces in terms of amount of plaque and degree of gingival inflammation. At the end of the EGS the restorative materials showed a significantly higher amount of plaque (CF versus E, P = 0.014; RC versus E, P = 0.034), but no significant differences were found in degree of gingival inflammation. In condusion, the ceramic filling material was comparable to RC regarding plaque formation and gingival inflammation with customary oral hygiene. With neglected oral hygiene, significantly less plaque growth and a non-significant tendency toward lower amounts of gingival crevicular fluid were observed on enamel surfaces.

Place, publisher, year, edition, pages
2002. Vol. 60, no 6, 370-374 p.
Identifiers
URN: urn:nbn:se:umu:diva-17669DOI: 10.1080/000163502762667414PubMedID: 12512888OAI: oai:DiVA.org:umu-17669DiVA: diva2:157342
Available from: 2007-11-15 Created: 2007-11-15 Last updated: 2009-10-06Bibliographically approved
In thesis
1. Influence of a dental ceramic and a calcium aluminate cement on dental biofilm formation and gingival inflammatory response
Open this publication in new window or tab >>Influence of a dental ceramic and a calcium aluminate cement on dental biofilm formation and gingival inflammatory response
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Dental restorative materials interact with their surrounding oral environment. Interaction factors can be release of toxic components and/or effects on biofilm formation and gingiva. In the end of the nineties, a calcium aluminate cement (CAC) was manufactured as a “bioceramic” alternative to resin composite. Dental ceramics are considered to be chemically stable and not to favour dental biofilm formation. Since the influence of aged, resin-bonded ceramic coverages is not fully investigated and the effect of CAC restorations on the dental biofilm formation and gingival response is unknown, those issues were evaluated in this thesis.

With or without oral hygiene, in clinical trials including cervical surfaces of CAC, and approximal surfaces of a leucite-reinforced bonded ceramic; biofilm growth, presence of caries-associated bacteria, clinical expressions of gingivitis, the amounts of gingival crevicular fluid (GCF) and its levels of IL-1α, IL-1β and IL-1 ra were investigated in comparison with resin composite and enamel. In addition, the unknown cytotoxic effect of specimens of CAC on fibroblasts was assessed in vitro.

With current oral hygiene a similar biofilm formation and gingival response, as evaluated, were observed at sites of CAC, resin composite and enamel. After ceased oral hygiene, more biofilm was assembled on CAC and on resin composite than on enamel. Neither with, nor without oral hygiene, biofilm formation, presence of caries-associated bacteria, clinical gingivitis and the levels of IL-1α, IL-1β and IL-1 ra differed between sites of ceramic, resin composite and enamel. Higher volumes of GCF were collected at ceramic sites compared to enamel. Fresh specimens of CAC showed the lowest cytotoxic effects on fibroblasts compared with three resin composites, zinc phosphate and glass ionomer cements.

In conclusion, the low cytotoxic effect of CAC and the limited increase in dental biofilm formation on that material compared with enamel suggest CAC to be a biocompatible dental material with respect to dental biofilm formation, presence of caries-associated microflora and gingival response. This finding, together with the observation that the influence of bonded ceramic on dental biofilm formation, caries-associated microflora and clinical gingivitis was not different from that of enamel, implicates for both CAC restorations and bonded ceramic that the need of oral hygiene and professional oral health care is not reduced.

Place, publisher, year, edition, pages
Umeå: Odontologi, 2007. 61 p.
Series
Umeå University odontological dissertations, ISSN 0345-7532 ; 98
Keyword
cements, ceramics, cytotoxicity, dental biofilm, gingivitis, interleukin-1, oral hygiene, resin composite
Identifiers
urn:nbn:se:umu:diva-1069 (URN)91-7264.284-3 (ISBN)
Public defence
2007-04-20, Sal B, 1D, Tandläkarhögskolan, Umeå, 09:00 (English)
Opponent
Supervisors
Available from: 2007-03-30 Created: 2007-03-30 Last updated: 2009-05-27Bibliographically approved

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