Ultrastructural effects caused by the irradiation of Er:YAG laser on smooth surfaces of deciduous tooth enamel

1999 ◽  
Author(s):  
Denise G. Borges ◽  
Aldo Brugnera, Jr. ◽  
Ii-Sei Watanabe
Keyword(s):  
Er:Yag Laser ◽  
Tooth Enamel ◽  
Deciduous Tooth ◽  
Smooth Surfaces

Energy output reduction and surface alteration of quartz and sapphire tips following Er:YAG laser contact irradiation for tooth enamel ablation

2009 ◽  
Vol 41 (8) ◽  
pp. 595-604 ◽  
Author(s):  
Toru Eguro ◽  
Akira Aoki ◽  
Toru Maeda ◽  
Aristeo Atsushi Takasaki ◽  
Mitsuru Hasegawa ◽  
...  
Keyword(s):  
Er:Yag Laser ◽  
Tooth Enamel ◽  
Energy Output ◽  
Surface Alteration

Adhesive Evaluation by Brushing Tests for Hydroxyapatite Films Fabricated on Dentins Using a Water Mist Assisted Er:YAG Laser Deposition Method

2017 ◽  
Vol 758 ◽  
pp. 97-104
Author(s):  
Ei Yamamoto ◽  
Nobuhiro Kato ◽  
Shigeki Hontsu
Keyword(s):  
Yttrium Aluminum Garnet ◽  
Er:Yag Laser ◽  
Tooth Enamel ◽  
Artificial Saliva ◽  
Water Mist ◽  
Laser Deposition ◽  
Deposition Method ◽  
Dentin Surface ◽  
Restoration Technique ◽  
Tooth Surfaces

Hydroxyapatite (HAp) is one of the main structural components in tooth. Therefore, the HAp is an ideal material to repair tooth substances. However, it has not yet been realized that tooth enamel and dentin are artificially repaired using the HAp in operative dentistry. We have proposed and developed a tooth restoration technique with intraoral laser ablation using an Er:YAG (Erbium: Yttrium-Aluminum-Garnet) laser in order to fabricate HAp films on tooth surfaces in the atmosphere at room temperature. Although HAp thin films were formed on dentin surfaces using the Er:YAG laser deposition method, it has still been unclear how is the mechanical durability of the HAp film on tooth substances. In the present study, we conducted brushing tests to evaluate the durability of adhesion between the HAp film and dentin. To form HAp layers on dentin surfaces, an ablation phenomenon was induced by the Er:YAG laser irradiated to the target of α-tricalcium phosphate (α-TCP) under humid conditions. The deposited layers were hydrolyzed by dripping artificial saliva on the surface at 37 degrees Celsius for 24, 48, 72, 120, and 168 hours to create HAp films. The films hydrolyzed for more than 48 hours were attached on the dentin surface after the brushing tests. This result indicates that the α-TCP layer deposited on the dentin surface changes into a crystallized HAp material by the hydrolyzation for more than 48 hours. The crystallization of the film possibly contributes to the high adhesive durability of the HAp film deposited on the dentin.

Fluoride concentrations at and near the neonatal line in human deciduous tooth enamel obtained from a naturally fluoridated and a non-fluoridated area

2001 ◽  
Vol 46 (2) ◽  
pp. 147-153 ◽  
Author(s):  
Yasuomi Toyama ◽  
Haruo Nakagaki ◽  
Shoichi Kato ◽  
Shiling Huang ◽  
Yuki Mizutani ◽  
...  
Keyword(s):  
Tooth Enamel ◽  
Deciduous Tooth

Fluoride Concentrations in Deciduous Tooth Enamel of Children Chewing Sodium Fluoride Tablets

1972 ◽  
Vol 51 (2) ◽  
pp. 551-554 ◽  
Author(s):  
J.R. Mellberg ◽  
C.R. Nicholson ◽  
F.E. Law
Keyword(s):  
Sodium Fluoride ◽  
Tooth Enamel ◽  
Deciduous Tooth ◽  
Control Group ◽  
The Difference

Fluoride concentrations in deciduous enamel of children who chewed or did not chew sodium fluoride tablets over a three year period were determined. Anterior and posterior enamel from children who used tablets contained 150 and 80 ppm more fluoride, respectively, at a depth of 5 μm than did enamel from the control group. The difference between tablet users and nonusers remained relatively constant during the study period.

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