Cytotoxicity and bonding property of dental ceramics

Uo, Motohiro; Sjögren, Göran; Sundh, Anders; Watari, Fumio; Bergman, Maud; Lerner, Ulf H.

doi:10.1016/s0109-5641(02)00094-5

Cited by 81 publications

(65 citation statements)

References 8 publications

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“…This might thus explain for the lack of improvement in bond strength of zirconium. Uo et al 22) reported that the bond strength of zirconium-based ceramic (Denzir) pretreated with silanization using phosphate resin cement was lower than that of silicabased ceramic (Empress), indicating that silanization did not improve the bond strength of zirconium oxide ceramics. Therefore, the results of this study were in agreement with those of Uo et al 30) .…”

Section: Evaluation Of Compressive Shear Bond Strength Marginal Leakmentioning

confidence: 99%

“…For restorations to function for a long time, it is very important to clarify the adhesive behaviors at the interface between the hybrid layer formed on the surface of dentin-pulp complex and resin luting agents, as well as between zirconium oxide ceramics and resin luting agents 14) . Obtaining good adhesion between luting agents and the ceramic surface requires surface pretreatment such as sandblasting, silanization [15][16][17][18][19] , and Rocatec treatment [20][21][22][23][24] . Silanization is obtained by the bond of silanol group (Si-OH) on the surface of silica (SiO2) and methoxy group of silane coupling agent, thereby forming siloxane bond (Si-O-Si) or hydrogen bond.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Dental Adhesive Cement and Surface Treatment on Bond Strength and Leakage of Zirconium Oxide Ceramics

et al. 2008

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Section: Evaluation Of Compressive Shear Bond Strength Marginal Leakmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Dental Adhesive Cement and Surface Treatment on Bond Strength and Leakage of Zirconium Oxide Ceramics

et al. 2008

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“…The use of high-strength zirconia ceramics has become increasingly popular in dentistry because of their excellent mechanical properties such as high flexural strength and toughness 1) , esthetic appearance 2) , and biocompatibility [3][4][5] . These ceramics are suitable for a variety of clinical applications, including: posts and cores 6,7) , dental implants 8,9) , orthodontic brackets 10,11) , and fixed-partial dentures [12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Dental zirconia can be etched by hydrofluoric acid

et al. 2014

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The surface morphology and crystal structure change of dental zirconia after hydrofluoric acid (HF) etching were evaluated. Four groups of sintered zirconia specimens were 1) control group, 2) immersion in 9.5%HF at 25 o C for 1, 2, 3, or 24 h, 3) immersion in 9.5%HF at 80o C for 1, 3, 5, or 30 min and 4) immersion in 48%HF at 25 o C for 30 or 60 min. The specimens were evaluated under SEM and XRD. The SEM analysis revealed changes in surface topography for all the HF-etched zirconia specimens. The irregularities surface increased with increasingly longer immersion times and higher etching solution temperatures. The XRD analysis of the HFetched zirconia specimens revealed the presence of a crystalline monoclinic phase along with a tetragonal form. It was concluded HF can etch dental zirconia ceramic, creating micro-morphological changes. Tetragonal-to-monoclinic phase transformation was induced on the etched zirconia surface.

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“…[4][5][6] The good mechanical properties and biological compatibility of zirconia (zirconium dioxide) have led to its increased use for various dental applications. 7,8 A number of advantages of ceramics over metal abutments have been reported in the literature: less mucosal discoloration, 9 less adhesion of bacteria, 10 very low or no cytotoxicity as measured in vitro human gingival fibroblast, 11 and mucosal attachment to zirconia that is as good as that to titanium, according to an animal study. 12 The three-year results from a randomized controlled clinical trial comparing customized zirconia and titanium abutments showed no difference in outcome from technical, biological, or esthetic points of view.…”

Section: Dislodgement Resistance Of Zirconia Copings Cemented Onto Zimentioning

confidence: 99%

Dislodgement Resistance of Zirconia Copings Cemented onto Zirconia and Titanium Abutments

et al. 2017

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PURPOSE To determine the effect of the cement type and abutment material on the tensile strength required to dislodge zirconia copings. MATERIALS AND METHODS Two experimental groups of abutments were prepared: (1) titanium abutments (n = 30) and (2) zirconia abutments (n = 30). Sixty zirconia copings (custom designed) were fabricated using 3-dimensional computer-assisted design to have a 6-mm projection above the abutment to accommodate a hole, through which a wire was inserted to attach the zirconia coping to a universal testing machine. Each abutment was placed onto an implant analog embedded in acrylic resin blocks to fit onto the universal testing machine. The zirconia copings were cemented onto the abutments with a provisional luting agent, zinc phosphate (ZP) cement, and adhesive resin cement, and after 5500 thermocycles, a tensile force was applied at a crosshead speed of 0.5 mm/min. The removal force was recorded for each specimen. Two-way analysis of variance (ANOVA) and 1-way ANOVA were used for the statistical analysis (P < 0.05). RESULTS The mean forces necessary to remove the zirconia copings from titanium abutments were 6.52, 83.09, and 251.18 N for temporary cement, ZP cement, and resin cement, respectively. For zirconia abutments, the required forces were 17.82, 116.41, and 248.72 N. CONCLUSIONS The abutment material had no effect on retention, but the cement type affected the retention of the zirconia copings.

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Cytotoxicity and bonding property of dental ceramics

Cited by 81 publications

References 8 publications

Effects of Dental Adhesive Cement and Surface Treatment on Bond Strength and Leakage of Zirconium Oxide Ceramics

Effects of Dental Adhesive Cement and Surface Treatment on Bond Strength and Leakage of Zirconium Oxide Ceramics

Dental zirconia can be etched by hydrofluoric acid

Dislodgement Resistance of Zirconia Copings Cemented onto Zirconia and Titanium Abutments

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