Title

Nd:YAG激光提高牙齿抗酸能力实验与机理研究

Translated Titles

Experiment and Mechanism Investigation on Acid Resistance of Nd:YAG Laser Treated Enamel

Authors

刘莉(Li Liu);黄楚云(Chu-Yun Huang);李正佳(Zheng-Jia Li)

Key Words

Nd:YAG激光 ; 龋齿 ; 预防 ; 抗酸能力 ; Nd:YAG laser ; caries ; prevention ; acid resistance

PublicationName

激光雜誌

Volume or Term/Year and Month of Publication

26卷1期(2005 / 02 / 01)

Page #

83 - 84

Content Language

簡體中文

Chinese Abstract

The effectiveness of Nd:YAG laser treatment on in vitro acid resistance of human enamel was studied. After surface polishing, enamel blocks irradiated by different power laser and control group were put into 5ml of lactate buffer solution(0.1mol/L) ,which was in water of 37℃ for 72 hours. The hardness and morphology of enamel surface were investigated by microhardmess meter and scanning electron microscopy. Compared with control, the group with 0.3W laser treatment has the least caries lesion (P<0.01). At the same time, the mechanism of caries prevention and acid resistance by laser was discussed in detail. We drew a conclusion that the change of contents in enamel and crystal orientations and partial decomposition of the organic matrix might be the main reason for enhancing acid resistance. And best caries inhibition could he achieved when the temperature rising of enamel surface was in the range of 300~400℃ by laser parameters being controlled suitably.

English Abstract

The effectiveness of Nd:YAG laser treatment on in vitro acid resistance of human enamel was studied. After surface polishing, enamel blocks irradiated by different power laser and control group were put into 5ml of lactate buffer solution(0.1mol/L) ,which was in water of 37℃ for 72 hours. The hardness and morphology of enamel surface were investigated by microhardmess meter and scanning electron microscopy. Compared with control, the group with 0.3W laser treatment has the least caries lesion (P<0.01). At the same time, the mechanism of caries prevention and acid resistance by laser was discussed in detail. We drew a conclusion that the change of contents in enamel and crystal orientations and partial decomposition of the organic matrix might be the main reason for enhancing acid resistance. And best caries inhibition could he achieved when the temperature rising of enamel surface was in the range of 300~400℃ by laser parameters being controlled suitably.

Topic Category 基礎與應用科學 > 物理
工程學 > 電機工程