Light transmission through a translucent fiber post.
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.
dos Santos Alves Morgan
Luís Fernando
LF
Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil. luismorgancd@yahoo.com.br
Peixoto
Rogéli Tiburcio Ribeiro da Cunha
RT
de Castro Albuquerque
Rodrigo
R
Santos Corrêa
Maurício Ferrari
MF
de Abreu Poletto
Luiz Thadeu
LT
Pinotti
Marcos Barbosa
MB
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
D000077482:Carbon Fiber; D003188:Composite Resins; D019279:Resin Cements; C009753:fiberglass; D011791:Quartz; D002244:Carbon