title: Fracture resistance of a selection of full-contour all-ceramic crowns: an in vitro study.
abstract: This study aimed to evaluate the fracture resistance of monolithic single crowns made from zirconia (ZI), lithium disilicate (LS2), or feldspar ceramic (FC). Five groups of crowns representing a maxillary first molar were made with the appropriate dimensions according to the manufacturer's instructions. The ZI and LS2 crowns were luted adhesively or cemented conventionally on a metal abutment tooth analog. The feldspar ceramic crowns were luted adhesively. All specimens underwent axial loading until fracture. The crowns in the ZI groups possessed the highest fracture resistance independent of the mode of fixation.
authors.forename: Tim F
authors.initials: TF
authors.lastname: Zesewitz
authors.forename: Andreas W
authors.initials: AW
authors.lastname: Knauber
authors.forename: Frank P
authors.initials: FP
authors.lastname: Nothdurft
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry; D002484:Cementation / Q000379:methods; D002516:Ceramics / Q000737:chemistry*; D002858:Chromium Alloys / Q000737:chemistry; D003442:Crowns; D000044:Dental Abutments; D003776:Dental Porcelain / Q000737:chemistry*; D019232:Dental Restoration Failure; D003799:Dental Stress Analysis / Q000295:instrumentation; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008277:Magnesium Oxide / Q000737:chemistry; D008422:Materials Testing; D008963:Molar; D011076:Polycarboxylate Cement / Q000737:chemistry; D017680:Potassium Compounds / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D015034:Zinc Oxide / Q000737:chemistry; D015040:Zirconium / Q000737:chemistry
chemical_list: D000538:Aluminum Silicates; D002858:Chromium Alloys; D005899:Glass Ionomer Cements; C438843:Panavia-Fluoro; D011076:Polycarboxylate Cement; D017680:Potassium Compounds; D019279:Resin Cements; C493120:lithia disilicate; D003776:Dental Porcelain; C016447:feldspar; D008277:Magnesium Oxide; C040235:Ketac-cem; D015040:Zirconium; C028541:zirconium oxide; D015034:Zinc Oxide