Light Transmission through a Translucent Fiber Post

dos Santos Alves Morgan, Luís Fernando; Peixoto, Rogéli Tiburcio Ribeiro da Cunha; de Castro Albuquerque, Rodrigo; Santos Corrêa, Maurício Ferrari; de Abreu Poletto, Luiz Thadeu; Pinotti, Marcos Barbosa

doi:10.1016/j.joen.2007.12.007

« Previous Next »Journal of Endodontics
Volume 34, Issue 3 , Pages 299-302, March 2008

Light Transmission through a Translucent Fiber Post

Luís Fernando dos Santos Alves Morgan, DDS
- Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
- Address requests for reprints to Dr Luís Fernando dos Santos Alves Morgan, Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil.
Rogéli Tiburcio Ribeiro da Cunha Peixoto, DDS, MSc
- Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
Rodrigo de Castro Albuquerque, DDS, MSc, PhD
- Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
Maurício Ferrari Santos Corrêa, DScEng
- Department of Mechanical Engineering, Federal University of Minas Gerais, Belo Horizonte, Brazil.
Luiz Thadeu de Abreu Poletto, DDS, MSc, PhD
- Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
Marcos Barbosa Pinotti, DDS, MSc, PhD
- Department of Mechanical Engineering, Federal University of Minas Gerais, Belo Horizonte, Brazil.

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.

Key Words: Dental material, dental posts, light transmission, transillumination