CO2 레리저에 의하 합성 Hykroxyapatite의 치면열구 전색효과
Pit and Fissure Sealing with CO2 Laser and Synthetic Hydroxyapatite
강성호, 손우성, 이창훈,
소속 상세정보
강성호 ( ) - 연세대학교
손우성 ( ) - 연세대학교
이창훈 ( ) - 연세대학교
KMID : 0355419930170010101
Abstract
Recent changes in the pattern of dental caries in developed countries have been largely confined to a reduction in smooth surface caries. The prevention and management of pit and fissure caries has therefore become relatively more important.
There
still
remains a need for an effective preventive measure against pit and fissure caries, which now accounts for more than 2/3 of the total caries experience in some child population. In this experiment we attempted to seal pit and fissure of 120
freshly
extracted intact permanent premolar and molar with synthetic hydroxyapatite and CO2 laser, by which we examined the influences during and after the laser irradiation at the site of enamel and dentin, and measured the temperature change of the
pulpal
chambers.
1. with measurements of the pulpal chambers, there was less increase in the temperature in the cases of 10 W pulsed mode (200 msec, twice/sec) treatment than 7 W continuous mode, resulted in 5.5 ℃ rise of the pulpal chamber.
2. By 7 W or 10W pulsed CO2 laser irradiation with the application of mixture of synthetic hydroxyapatite and H3BO3 (1:1 in weight), the materials have been melted and fused with the enamel of the teeth.
3. The fused synthetic hydroxyapatite has been attached to the enamel, and couldn't be easily removed with a dental explorer.
4. The pit and fissure was sealed with the mixture of hydroxyapatite and H3BO3 (1:1 in weight) by laser irradiation at 7 W or 10 W pulsed mode in the low magnification of the polarizing microscopic findings, and fusion of hydroxyapatite
particles
inside of the fissures with the enamel was observed in the high magnification.
These above results thus imply that pit and fissure sealing with synthetic hydroxyapatite and CO2 laser allow fusion of the enamel with the material. Further experiments to lower the melting point of synthetic hydroxyapatite and to investigate
the
proper material and laser irradiation parameter and clinical studies are necessary to investigate the effects of laser irradiation on dental pulp and with the results enhance the potential clinical use.
키워드
원문 및 링크아웃 정보
등재저널 정보