In vitro biocompatibility of air-fired opaque porcelain with human gingival fibroblasts

Cobb, Charles M.; White, Connie; Gillahan, Robert D.; Tira, Daniel E.

doi:10.1016/0022-3913(88)90014-5

Cited by 11 publications

(4 citation statements)

References 33 publications

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“…Different researches have been performed to study local cytotoxicity of dental ceramics. Cobb et al (1988) investigated the in vitro biocompatibility of porous air-fired opaque porcelain with human gingival fibroblasts. Their results indicated that porous air-fired opaque porcelain is biocompatible.…”

Section: Local Toxicity Related To Ceramicsmentioning

confidence: 99%

Biocompatibility

Elshahawy¹

2011

Advances in Ceramics - Electric and Magnetic Ceramics, Bioceramics, Ceramics and Environment

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Section: Local Toxicity Related To Ceramicsmentioning

confidence: 99%

Biocompatibility

Elshahawy¹

2011

Advances in Ceramics - Electric and Magnetic Ceramics, Bioceramics, Ceramics and Environment

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“…Fixed ceramic restorations restore the morphology and function of lost or destroyed teeth, but cannot completely rebuild the structural relationship with soft periodontal tissues, as new attachment on ceramic materials has never been achieved. Although conventional dental ceramics are considered biocompatible (Cobb et al ., 1988; Rucker et al ., 1990; Kihn & Barnes, 1998; Meijering et al ., 1998), they don't exhibit any bioactive behaviour. Thus, the induction of bioactivity on dental ceramics could lead to new periodontal tissue attachment and consequently to complete sealing of the marginal gap between fixed prosthesis and natural tooth (Abbate, Tjan & Fox, 1989; Felton et al ., 1991).…”

Section: Introductionmentioning

confidence: 99%

Apatite formation on dental ceramics modified by a bioactive glass

Kontonasaki

Παπαδοπούλου

Zorba

et al. 2003

J of Oral Rehabilitation

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Restorative dental materials are considered biocompatible without exhibiting any bioactive behaviour. The aim of this study was the investigation of surface structure changes on conventional dental ceramics used in metal-ceramic restorations modified by a bioactive glass, after immersion in SBF for various time periods. Bioactive glass powder was mixed with porcelain powder with three different weight ratios: 1:1, 1:2, and 2:1. The two powders were mixed with porcelain modelling liquid and the mixture was transferred and spread on the surface of pre-fabricated ceramic disks. Coated ceramic specimens after being exposed to a specific thermal cycle as it is recommended for dental ceramics were soaked in Simulated Body Fluid (SBF) at 37 degrees C for various periods of time. After soaking, specimens were studied using Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). Results revealed the development of a non-stoichiometric, biological apatite layer on their surface after exposure in SBF for several time periods. The onset of apatite-layer formation is directly dependent on the amount of bioglass in the coating and its thickness reduces within the specimens of the same bioactive glass-porcelain proportion with time, reaching an average thickness of 15 microm at the longest immersion time, for all the specimens.

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“…Surface modification of body and shoulder ceramic disks by CaO formed the BCa and SCa test groups, respectively, whilst modification by CaO–P 2 O 5 formed the BCaP and SCaP test groups, respectively. Ceramics used for construction of conventional metal–ceramic restorations, were selected as positive controls (B and S), because they are considered biocompatible and thus they are not influenced by electrochemical corrosion neither they released toxic products in the oral enviroment (Newcomb, 1974; Smith & Williams, 1980; Cobb et al ., 1988).…”

Section: Methodsmentioning

confidence: 99%

Comparison of cell proliferation on modified dental ceramics

Kokoti

Sivropoulou

Koidis

et al. 2001

J of Oral Rehabilitation

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The aim of this study was to investigate the in¯uence of substrate characteristics such as chemical composition and surface morphology of dental ceramics to support cell attachment and proliferation. Thus, body (B) and shoulder (S) porcelain differing on their surface morphology and composition were treated with oxides CaO or CaO and P 2 O 5 and four modi®ed ceramics BCa, BCaP, SCa, SCaP were constructed, respectively. The modi®ed ceramics differ from their controls concerning their surface morphology as evaluated by Scanning Electron Microscope (SEM), and their surface chemical composition (Na, KP and Ca) as evaluated by Energy Dispersing Spectroscopy (EDS). All modi®ed ceramics support better than the control ceramics the cell proliferation over 72 h incubation period. Furthermore, higher rates of cell proliferation was detected in shoulder modi®ed ceramics (SCa and SCaP) than in all other cases. KEYWORDS

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In vitro biocompatibility of air-fired opaque porcelain with human gingival fibroblasts

Cited by 11 publications

References 33 publications

Biocompatibility

Biocompatibility

Apatite formation on dental ceramics modified by a bioactive glass

Comparison of cell proliferation on modified dental ceramics

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