Abstract：
:We aimed at examining the effects of a percentage of air/water in spray on the cutting efficiency of Er,Cr:YSGG laser for enamel and dentin. The intensity and frequency of irradiation were 3.0 W and 20 Hz for the enamel surface and 2.0 W and 20 Hz for the dentin surface, respectively. Flattened surfaces of enamel and dentin were irradiated at nine points for approximately 1 s under various percentages of air/water in spray using Er,Cr:YSGG laser. A high-speed video microscope was used to record each laser irradiation on the tooth surface. A slow video image was used to count the number of water micro-explosions yielded on the tooth surface during laser irradiation. A surface roughness tester was used to measure the depth of the dimple prepared with laser irradiation on each specimen. Each individual depth of dimple was divided by the number of water micro-explosions (pulse). This allowed for the calculation of the cutting depth per pulse. Following laser irradiation, several representative specimens were observed using an SEM. Two-way ANOVA was used as the statistical analysis. This revealed that there was no significant effect of the percentage of air/water in spray on the cutting depth for enamel surface (p > 0.05). On the contrary, a significant effect was observed in air-ratio for dentin cutting (p < 0.05). Both enamel and dentin were characterized by the presence of rough surfaces, as shown by the SEM images of the dimples. The percentage of air/water in spray was not significantly effective in laser cutting for enamel. Air-percentage was significantly effective in laser cutting for dentin.
journal_name
Lasers Med Scijournal_title
Lasers in medical scienceauthors
Shinkai K,Takada M,Kawashima S,Suzuki M,Suzuki Sdoi
10.1007/s10103-018-2607-5subject
Has Abstractpub_date
2019-02-01 00:00:00pages
99-105issue
1eissn
0268-8921issn
1435-604Xpii
10.1007/s10103-018-2607-5journal_volume
34pub_type
杂志文章abstract：:The aim of the present study was to investigate laser-fluorescence effects on the root surface. The possibility of detecting subgingival calculus should be evaluated to control complete calculus removal after scaling and root planing. Twenty freshly extracted human teeth, partially covered with calculus on the root su...
journal_title：Lasers in medical science
pub_type： 杂志文章
doi：10.1007/s10103-002-0241-7
更新日期：2003-01-01 00:00:00
abstract：:Crohn's disease is a chronic relapsing and remitting inflammatory condition which affects any part of the gastrointestinal tract. In the oro-facial region, patients can present peri-oral swellings which results in severe facial disfigurement. To date, assessing the degree of facial changes and evaluation of treatment ...
journal_title：Lasers in medical science
pub_type： 杂志文章
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更新日期：2014-05-01 00:00:00
abstract：:Photodynamic therapy (PDT) with photosensitizer is one of the promising modalities for cancer treatment. For clinical use of PDT, screening process should be preceded to enhance sensitivity to PDT. Thus, we investigated a molecular biomarker to determine the sensitivity to pheophorbide a (Pa)-PDT in immortalized human...
journal_title：Lasers in medical science
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doi：10.1007/s10103-013-1350-1
更新日期：2015-02-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章,随机对照试验
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更新日期：2014-11-01 00:00:00
abstract：:Corrosiveness of enamel surfaces of Smartbleach, Opus White, Opalescense Xtra Boost and a gel containing titanium dioxide (TiO(2)) particles, activated either by a frequency doubled neodymium: yttrium-aluminum-garnet (Nd:YAG) laser (532 nm) or a diode laser (810 nm) was evaluated by environmental scanning electron mic...
journal_title：Lasers in medical science
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journal_title：Lasers in medical science
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journal_title：Lasers in medical science
pub_type： 杂志文章
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更新日期：2002-01-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
doi：10.1007/s10103-017-2323-6
更新日期：2018-01-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
doi：10.1007/s10103-007-0489-z
更新日期：2008-07-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
doi：10.1007/s10103-017-2250-6
更新日期：2017-08-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
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更新日期：2013-11-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
doi：10.1007/s10103-020-03024-z
更新日期：2020-04-27 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
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更新日期：2020-03-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
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更新日期：1998-12-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
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更新日期：2009-09-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章,meta分析,评审
doi：10.1007/s10103-017-2179-9
更新日期：2017-05-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
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更新日期：2017-04-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
doi：10.1007/s10103-019-02931-0
更新日期：2020-04-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
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journal_title：Lasers in medical science
pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：2018-04-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章
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更新日期：2009-05-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 杂志文章,随机对照试验
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更新日期：2018-02-01 00:00:00
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pub_type： 杂志文章
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journal_title：Lasers in medical science
pub_type： 杂志文章
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更新日期：2015-08-01 00:00:00
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journal_title：Lasers in medical science
pub_type： 临床试验,杂志文章
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更新日期：2012-01-01 00:00:00
abstract：:Low-energy laser irradiation (Ga-Al-As semiconductor laser, output 50 mW) was applied to rat osteoclast precursor cells for 1, 3, 6, or 10 min at 24-h intervals during the culture period. The number of tartrate-resistant acid phosphatase positive multinucleate cells was increased by approximately 1.3-fold in the 3- an...
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pub_type： 杂志文章
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更新日期：2006-04-01 00:00:00
