Flexural strength of an infused ceramic, glass ceramic, and feldspathic porcelain.
In-Ceram material is a relatively new all-ceramic restorative material with improved properties that require research. The clinical selection of restorative materials is based on a number of parameters such as esthetics, fit, and strength. This study determined the flexural strength of In-Ceram system components and compared the core material with conventional feldspathic ceramics and with Dicor all-ceramic restorative material. Four-point flexural strength values of bend bars of each ceramic were 18.39 +/- 5.00 MPa for In-Ceram sintered alumina, 76.53 +/- 15.23 MPa for In-Ceram infusion glass, and 236.15 +/- 21.94 MPa for In-Ceram infused alumina core. Flexural strength of self-glazed feldspathic porcelain was 69.74 +/- 5.47 MPa, as-cast Dicor ceramic 71.48 +/- 7.17 MPa, and polished Dicor ceramic was 107.78 +/- 8.45 MPa.
Giordano
R A
RA
Department of Biomaterials, Boston University, Goldman School of Graduate Dentistry, Mass., USA.
Pelletier
L
L
Campbell
S
S
Pober
R
R
D000537:Aluminum Oxide / Q000737:chemistry*; D000538:Aluminum Silicates; D000704:Analysis of Variance; D002516:Ceramics; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003442:Crowns; D003776:Dental Porcelain / Q000737:chemistry*; D003799:Dental Stress Analysis; D008422:Materials Testing; D008854:Microscopy, Electron; D018583:Pliability; D016062:Porosity; D017680:Potassium Compounds; D013499:Surface Properties
D000538:Aluminum Silicates; C047475:Dicor ceramic; D017680:Potassium Compounds; D003776:Dental Porcelain; C016447:feldspar; C070870:In-Ceram; C023506:Glass ceramics; D000537:Aluminum Oxide