title: Light transmission through a translucent fiber post.
abstract: This study is a quantitative assessment of the luminous energy transmitted through different translucent fiber posts. After embedding the posts in black resin, the blocks were submitted to sequential cuts in a precision machine, and depths of 16 mm, 12 mm, 8 mm, and 4 mm were assessed for light transmission with a digital photometer. The quantitative analysis showed significant differences between different posts and depths. Furthermore, the values obtained revealed that the quantity of luminous energy transmitted depends on the type of post and that for all of them there was a significant reduction of the quantity of light transmitted as the depth increased. Even without the post, the luminous intensity inside the canal seems to decrease to levels that are insufficient for polymerization, especially in the apical third.
authors.affiliation: Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil. luismorgancd@yahoo.com.br
authors.forename: Luís Fernando
authors.initials: LF
authors.lastname: dos Santos Alves Morgan
authors.forename: Rogéli Tiburcio Ribeiro da Cunha
authors.initials: RT
authors.lastname: Peixoto
authors.forename: Rodrigo
authors.initials: R
authors.lastname: de Castro Albuquerque
authors.forename: Maurício Ferrari
authors.initials: MF
authors.lastname: Santos Corrêa
authors.forename: Luiz Thadeu
authors.initials: LT
authors.lastname: de Abreu Poletto
authors.forename: Marcos Barbosa
authors.initials: MB
authors.lastname: Pinotti
mesh_terms: D002244:Carbon; D000077482:Carbon Fiber; D002484:Cementation; D003188:Composite Resins / Q000737:chemistry*; D005898:Glass; D008027:Light; D044367:Phase Transition; D011176:Post and Core Technique; D011791:Quartz; D019279:Resin Cements / Q000528:radiation effects*; D019227:Tooth Apex
chemical_list: D000077482:Carbon Fiber; D003188:Composite Resins; D019279:Resin Cements; C009753:fiberglass; D011791:Quartz; D002244:Carbon