Tin oxide coating of aluminous porcelain by reactive ion plating.
Alumina reinforced dental porcelain has been coated directly with tin oxide by reactive ion plating. Samples were prepared at different distances from the tin source in the ion plating rig. Tensile bond strengths of treated and untreated porcelain discs to a commercially available phosphate-methacrylate based dental cement were determined. Bond strengths of certain coated samples were found to be in excess of the cohesive strength of the porcelain substrates (greater than 7.8 MPa), whereas untreated porcelain achieved an average bond strength of only 3.4 MPa. The microstructures of coatings produced under conditions similar to those which yielded the maximum bond strength were examined in a scanning electron microscope and were found to be approximately 0.5 microns thick. It is believed that ion plating has great potential for rendering inert ceramic surfaces capable of direct bonding to dental cements.
McCrory
P V
PV
Department of Restorative Dentistry, Turner Dental School, University Dental Hospital of Manchester, UK.
Tinston
S
S
Piddock
V
V
Kelly
P
P
Combe
E C
EC
Arnell
R D
RD
D000269:Adhesives / Q000737:chemistry; D000535:Aluminum / Q000737:chemistry*; D000537:Aluminum Oxide / Q000737:chemistry; D000538:Aluminum Silicates / Q000737:chemistry; D002858:Chromium Alloys / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods; D003776:Dental Porcelain / Q000737:chemistry*; D004595:Electroplating; D008422:Materials Testing; D010710:Phosphates / Q000737:chemistry; D011188:Potassium / Q000737:chemistry; D017680:Potassium Compounds; D019279:Resin Cements; D012117:Resins, Synthetic / Q000737:chemistry; D013314:Stress, Mechanical; D013718:Tensile Strength; D014001:Tin / Q000737:chemistry*; D017971:Tin Compounds
D000269:Adhesives; D000538:Aluminum Silicates; D002858:Chromium Alloys; D010710:Phosphates; D017680:Potassium Compounds; D019279:Resin Cements; D012117:Resins, Synthetic; D017971:Tin Compounds; D003776:Dental Porcelain; C016447:feldspar; C058236:Vitadur N; D014001:Tin; C052304:Panavia EX; D000535:Aluminum; C045358:stannic oxide; D000537:Aluminum Oxide; D011188:Potassium