Category: Dental Material

Amalgam: Is it safe as a dental restoration ? Dental amalgam is an alloy of mercury, silver, copper, and tin, which may also contain palladium, zinc, and other elements to improve handling characteristics and clinical performance. JPT9 Amalgam types based  on copper concentration: Low copper ( 6% ) Silver, tin copper, zinc High copper  (

Five-year clinical results of zirconia frameworks for posterior fixed partial dentures Sailer et al 2007 Studies using finite-element analysis demonstrated that during occlusal loading the highest stress within FPDs was located at the gingival side of the connector area. Zirconia exhibits the highest bending strength (900 MPa) and  fracture toughness (9 MPa m1/2 ) of

A review of contemporary impression materials and techniques Donovan et al 2004 This article outlines the ideal properties of impression materials and explains the importance of critical manipulative variables. Available impression materials are analyzed relative to these variables, and several ‘‘specialized’’ impression techniques are described. Ideal properties  1.Elastic recovery:  Elastomeric impression materials must be able to

Current ceramic materials and systems with clinical recommendations: A systematic review Heather J. Conrad et al 2007 McLean pioneered the concept of adding Al2O3 to feldspathic porcelain to improve mechanical and physical properties. The first biomedical application of zirconia occurred in 1969. The first paper regarding the use of zirconia for the production of artificial