Document Detail

Stimulatory Effects of CO(2) Laser, Er:YAG Laser and Ga-Al-As Laser on Exposed Dentinal Tubule Orifices.
MedLine Citation:
PMID:  18385831     Owner:  NLM     Status:  PubMed-not-MEDLINE    
We investigated the effects of lasers irradiation on the exposed dentinal tubule. Human tooth specimens with exposed dentinal tubule orifices were used. Three types of lasers (CO(2) laser, Er:YAG laser and Ga-Al-As laser) were employed. The parameters were 1.0 W in continuous-wave mode with an irradiation time of 30 s for the CO(2) laser, 30 mJ in continuous-wave mode with an irradiation time of 60 s for the Er:YAG laser, and 1.0 W in continuous-wave mode with an irradiation time of 60 s for the Ga-Al-As laser. A non-irradiated group was used as a control. After laser irradiation, the dentinal surface of each sample was observed using SEM. Afterwards, all samples were immersed in methylene blue dye solution in order to evaluate the penetration of the dye solution and observe the change in dentinal permeability after laser irradiation. SEM observation showed that the control group had numerous exposed dentinal tubule orifices, whereas these orifices were closed in the laser-irradiated groups. There was consistent dye penetration into the pulp chamber in the control group, whereas no dye penetration was evident in the laser-irradiated groups. Therefore, laser appears to be a promising treatment for reducing permeation through exposed dentinal tubules.
Satoshi Matsui; Masahiro Kozuka; Jyunichi Takayama; Kana Ueda; Hiroko Nakamura; Ko Ito; Masaru Kimura; Hiroshi Miura; Yasuhisa Tsujimoto; Toshirou Kondoh; Takuji Ikemi; Kiyoshi Matsushima
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of clinical biochemistry and nutrition     Volume:  42     ISSN:  0912-0009     ISO Abbreviation:  J Clin Biochem Nutr     Publication Date:  2008 Mar 
Date Detail:
Created Date:  2008-04-03     Completed Date:  2011-07-14     Revised Date:  2013-05-23    
Medline Journal Info:
Nlm Unique ID:  8700907     Medline TA:  J Clin Biochem Nutr     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  138-43     Citation Subset:  -    
Department of Clinical Oral Physiology, Nihon University School of Dentistry at Matsudo, 870-1, Sakaecho, Nishi-2, Matsudo, Chiba 271-8587, Japan.
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