title: Light transmission of posts and cores used for the anterior esthetic region.
abstract: Restoration of endodontically treated teeth is a routine procedure in everyday clinical practice. Placement of posts and cores is often required for replacement of the missing coronal aspect of teeth. Use of traditional post-and-core systems (gold and titanium) in conjunction with all-ceramic restorations results in poor esthetics because of the reflection and lack of light transmission. For a highly esthetic outcome, there is a need to use a material that transmits and refracts light in much the same manner as a natural tooth. The purpose of this study was to clinically evaluate the light transmission of a (1) ceramic post (Celay), (2) polyester post reinforced with zirconium fibers (Snowlight), and (3) zirconia post (Cosmopost), in comparison with a cast-metal post and core covered with opaque porcelain (control). The light transmission of these systems when used in conjunction with IPS Empress all-ceramic crowns was evaluated.
authors.affiliation: School of Dental Medicine, Tufts University, Boston, USA. kmichalakis@the.forthnet.gr
authors.forename: Konstantinos X
authors.initials: KX
authors.lastname: Michalakis
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Hirayama
authors.forename: John
authors.initials: J
authors.lastname: Sfolkos
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Sfolkos
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry; D002516:Ceramics / Q000737:chemistry; D003776:Dental Porcelain / Q000737:chemistry; D017267:Dental Prosthesis Design; D004955:Esthetics, Dental; D006047:Gold Alloys / Q000737:chemistry; D006801:Humans; D008027:Light; D016876:Metal Ceramic Alloys / Q000737:chemistry; D055095:Optics and Photonics; D011091:Polyesters / Q000737:chemistry; D011176:Post and Core Technique / Q000295:instrumentation; D014025:Titanium / Q000737:chemistry; D019553:Tooth, Nonvital / Q000628:therapy; D015040:Zirconium / Q000737:chemistry
chemical_list: D000538:Aluminum Silicates; D006047:Gold Alloys; C075815:IPS-Empress ceramic; D016876:Metal Ceramic Alloys; D011091:Polyesters; D003776:Dental Porcelain; D015040:Zirconium; D014025:Titanium