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Interface gap size of manually and CAD/CAM-manufactured ceramic inlays/onlays in vitro.
Umeå universitet, Medicinsk fakultet, Odontologi, Odontologisk materialvetenskap.
Umeå universitet, Medicinsk fakultet, Odontologi, Odontologisk materialvetenskap.
Umeå universitet, Medicinsk fakultet, Odontologi, Odontologisk materialvetenskap.
Umeå universitet, Medicinsk fakultet, Odontologi, Odontologisk materialvetenskap.
2002 (engelsk)Inngår i: Journal of Dentistry, ISSN 0300-5712, E-ISSN 1879-176X, Vol. 30, nr 1, s. 53-58Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Objectives : To determine the fit of ceramic inlays manufactured using a recently introduced CAD/CAM-system (Decim) and of two types of laboratory-made heat-pressed ceramics (IPS Empress and Opc).

Materials and methods : Extracted human premolars were prepared to receive mesio-occlusodistal (MOD) ceramic inlays, for which 10 Denzir, 10 IPS Empress, and 10 Opc were fabricated. The Denzir restorations were produced by the manufacturer of the CAD/CAM-system, and the IPS Empress and Opc by student dental technicians. Before luting the internal fit on the diestone models and on the premolars was determined using replicas. After luting on the premolars with a resin composite the marginal and internal fit were measured. The values were analyzed statistically using ANOVA and Scheffe's test at a significance level of p<0.05.

Results : Before luting there were no significant differences ( p>0.05) in the internal gap width between the three systems studied when placed on their matching diestone models. When placed on the premolars a significant difference ( p<0.01) in the internal fit was seen between Empress and Opc before luting, whereas there were no significant differences ( p>0.05) between Empress and Denzir and between Opc and Denzir. Between the diestone models and the premolars there were significant differences ( p<0.01) in the internal fit, except for IPS Empress. After luting there were no significant differences ( p>0.05) between IPS Empress and Denzir, whereas the marginal gap width was significantly wider ( p<0.001) for Opc than for IPS Empress and Denzir. The internal fit was significantly ( p<0.001) wider for Opc than for IPS Empress, whereas there were no significant differences ( p>0.05) between IPS Empress and Denzir or between Opc and Denzir.

Conclusion : After luting there were only slight differences in the fit between the restorations fabricated using the three different manufacturing techniques and ceramics. Therefore, long-term follow-up studies are needed to assess the clinical significance of the slight differences between the three systems.

sted, utgiver, år, opplag, sider
2002. Vol. 30, nr 1, s. 53-58
Emneord [en]
Ceramic, Ceramic inlays; Composite; Dental materials; Marginal gap; Internal gap; Inlays
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-9024DOI: doi:10.1016/S0300-5712(01)00059-8PubMedID: 11741736OAI: oai:DiVA.org:umu-9024DiVA, id: diva2:148695
Tilgjengelig fra: 2008-02-26 Laget: 2008-02-26 Sist oppdatert: 2018-06-09bibliografisk kontrollert

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