Degree of conversion of resin composite cured by light through a translucent fiber posts
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
PURPOSE. This study evaluated the depth of cure of resin composite cured by light through a translucent fiber post. MATERIALS AND METHODS. The opaque plastic tubes in various lengths of 2, 4, 6, 8, 10, 12, 14 mm. were filled with resin composite in which two different translucent fiber posts were inserted into the center and photo-polymerized for 40 seconds. The degree of conversion of the cured composite at bottom surface were examined using Fourier transform infrared attenuated total reflection spectrometer (FTIR/ATR) at 0.1, 0.5 and 1.0 mm apart from the post surface. RESULTS. The degree of conversion of the 0.1 mm, 0.5 mm, 1.0 mm apart from the post surface was highest at the 2 mm level and continuously decreased when the distance from the light source was increased and drastically decreased when the depth from the top of the post was greater than 4-6 mm. For each level, the highest degree of conversion was at 0.1 mm from the post surface and decreasedcontinuously when the distance apart from the post surface was increased. CONCLUSION. The quantity of light transmission depends on the type of post and the light transmission capability of the post, especially after 4-6 mm depth and the area further apart from the post surface, are insufficient for clinical light activation of resin composite.
Abstract
PURPOSE. This study evaluated the depth of cure of resin composite cured by light through a translucent fiber post. MATERIALS AND METHODS. The opaque plastic tubes in various lengths of 2, 4, 6, 8, 10, 12, 14 mm. were filled with resin composite in which two different translucent fiber posts were inserted into the center and photo-polymerized for 40 seconds. The degree of conversion of the cured composite at bottom surface were examined using Fourier transform infrared attenuated total reflection spectrometer (FTIR/ATR) at 0.1, 0.5 and 1.0 mm apart from the post surface. RESULTS. The degree of conversion of the 0.1 mm, 0.5 mm, 1.0 mm apart from the post surface was highest at the 2 mm level and continuously decreased when the distance from the light source was increased and drastically decreased when the depth from the top of the post was greater than 4-6 mm. For each level, the highest degree of conversion was at 0.1 mm from the post surface and decreasedcontinuously when the distance apart from the post surface was increased. CONCLUSION. The quantity of light transmission depends on the type of post and the light transmission capability of the post, especially after 4-6 mm depth and the area further apart from the post surface, are insufficient for clinical light activation of resin composite.
참고문헌 (18)
- Bitter K., "Post-endodontic restorations with adhesively luted fiber-reinforced composite post systems : a review", Am J Dent, 20, pp.353~360 (2007)
- Plotino G., "Flexural properties of endodontic posts and human root dentin", Dent Mater, 23, pp.1129~1135 (2007)
- Dietschi D., "Biomechanical considerations for the restoration of endodontically treated teeth : a systematic review of the literature-Part 1. Composition and micro-and macrostructure alterations", Quintessence Int, 38, pp.733~743 (2007)
- Dietschi D., "Biomechanical considerations for the restoration of endodontically treated teeth : a systematic review of the literature, Part II(Evaluation of fatigue behavior, interfaces, and in vivo studies)", Quintessence Int, 39, pp.117~129 (2008)
- Yamamoto M., "Photoelastic stress analysis of different post and core restoration methods", Dent Mater J, 28, pp.204~211 (2009)
- Ferrari M., "Clinical evaluation of fiber-reinforced epoxy resin posts and cast post and cores", Am J Dent, 13, pp.15B~18B (2000)
- Jung RE., "A comparison of composite post buildups and cast gold postand-core buildups for the restoration of nonvital teeth after 5 to 10 years", Int J Prosthodont, 20, pp.63~69 (2007)
- Soares CJ., "Longitudinal clinical evaluation of post systems : a literature review", Braz Dent J, 23, pp.135~740 (2012)
- Goracci C., "Laboratory assessment of the retentive potential of adhesive posts : a review", J Dent, 35, pp.827~835 (2007)
- Tay FR., "Factors contributing to the incompatibility between simplified-step adhesives and chemically-cured or dual-cured composites. Part I. Single-step self-etching adhesive", J Adhes Dent, 5, pp.27~40 (2003)
- Leevailoj C., "Shear bond strength of dual-cured and self-cured resin composites to dentin using different bonding agents and techniques", Oper Dent, 32, pp.149~159 (2007)
- Goracci C., "Lighttransmitting ability of marketed fiber posts", J Dent Res, 87, pp.1122~1126 (2008)
- dos Santos Alves Morgan LF., "Light transmission through a translucent fiber post", J Endod, 34, pp.299~302 (2008)
- Ozcan M., "Microhardness of dual-polymerized resin cement around a translucent fiber post in the intraradicular environment", J Conserv Dent, 14, pp.370~373 (2011)
- Roberts HW., "The effect of a translucent post on resin composite depth of cure", Dent Mater, 20, pp.617~622 (2004)
- Yoldas O., "Microhardness of composites in simulated root canals cured with light transmitting posts and glass-fiber reinforced composite posts", J Endod, 31, pp.104~106 (2005)
- Faria e Silva AL., "Influence of fiber-post translucency on the degree of conversion of a dual-cured resin cement", J Endod, 33, pp.303~305 (2007)
- Upstone SL., "Encyclopedia of analytical Chemistry", pp.1699~1714 (2000), John Wiley & Sons