| Energy output reduction and surface alteration of quartz and sapphire tips following Er:YAG laser contact irradiation for tooth enamel ablation. | |
| | |
MedLine Citation:
|
PMID: 19780189 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
|
BACKGROUND: Despite the recent increase in application of Er:YAG laser for various dental treatments, limited information is available regarding the contact tips. This study examined the changes in energy output and surface condition of quartz and sapphire contact tips after Er:YAG laser contact irradiation for tooth enamel ablation. MATERIALS AND METHODS: Ten sets of unused quartz or sapphire contact tips were employed for contact irradiation to sound enamel of extracted teeth. The teeth were irradiated with Er:YAG laser at approximately 75 J/cm(2)/pulse and 20 Hz under water spray for 60 minutes. The energy output was measured before and every 5 minutes after irradiation, and the changes in morphology and chemical composition of the contact surface were analyzed. RESULTS: The energy output significantly decreased with time in both tips. The energy output from the sapphire tips was generally higher on average than that of the quartz. The contact surfaces of all the used quartz tips were concave and irregular. Most of the sapphire tips also appeared rough with crater formation and fractures, except for a few tips in which a high energy output and the original smooth surface were maintained. Spots of melted tooth substances were seen attached to the surface of both tips. CONCLUSION: In contact enamel ablation, the sapphire tip appeared to be more resistant than the quartz tip. The quartz tips showed similar patterns of energy reduction and surface alteration, whereas the sapphire tips revealed a wider and more characteristic variation among tips. Lasers Surg. Med. 41:595-604, 2009. (c) 2009 Wiley-Liss, Inc. |
| | |
Authors:
|
Toru Eguro; Akira Aoki; Toru Maeda; Aristeo Atsushi Takasaki; Mitsuru Hasegawa; Masaaki Ogawa; Takanori Suzuki; Kazuaki Yonemoto; Isao Ishikawa; Yuichi Izumi; Ichiroh Katsuumi |
Related Documents
:
|
6816999 - Experimental study of partial liver resection with a combined co2 and nd:yag laser. 7075429 - Comparative study of the effects of argon and neodymium yag laser beams on the normal f... 16409069 - Application of infrared light for in vivo neural stimulation. 20961349 - Split-face comparison of long-pulse-duration neodymium-doped yttrium aluminum garnet (n... 12727239 - Pulsed laser irradiation impact on two marine diatoms skeletonema costatum and chaetoce... 6507529 - Analysis of electronically pulsed versus quasi-continuous wave carbon dioxide lasers in... 17925269 - To recognize shapes, first learn to generate images. 15600789 - Two-component bose-einstein condensates in periodic potential. 19654799 - Analysis of the far-field region of leds. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Lasers in surgery and medicine Volume: 41 ISSN: 1096-9101 ISO Abbreviation: Lasers Surg Med Publication Date: 2009 Oct |
Date Detail:
|
Created Date: 2009-09-30 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8007168 Medline TA: Lasers Surg Med Country: United States |
Other Details:
|
Languages: eng Pagination: 595-604 Citation Subset: IM |
Affiliation:
|
Department of Endodontics and Operative Dentistry, School of Life Dentistry at Tokyo, Nippon Dental University, Tokyo, Japan. info@egurodental.com |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Protective effects of vitamins C and E on spermatogenesis of 1.5 Tesla magnetic field exposed rats.
Next Document: Relationship between body habitus and joint leptin levels in a knee osteoarthritis population.