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AN EXPERIMENTAL STUDY ON THE EFFECT OF Nd: YAG LASER TO THE TOPICAL APPLICATION OF STANNOUS FLUORIDE

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Abstract

Ì¿ ÒÕ
îÊíº´Â Ý×ûùà¸ÀÇ ÏÑá¶ÓóøÖý­ Nd : YAG ·¹ÀÌÀú¸¦ ðÎÞÒÇؼ­ öÍØü¿¡ ¹ÌÄ¡´Â ç¯úÂÀ» κßãÇÏ
±â êÓÇÏ¿© ÚûËÛµÈ öÍä³ 80ËÁ¸¦ ÞÅéÄÇÏ¿© 160°³ÀÇ ãËø¸À» ð²íÂÇÏ°í Ý×áÈÓóøÖý­ 10, 20, 30,
40, 50, 60jou1esÀÇ ¿¡³ÊÁö·Î °¢°¢ ,ðÎÞÒÇÑ ý­ ñËÞÛï³í­ÔéòÄÌðÀ¸·Î öÍØüÀ» κáÈÇÏ°í X-àÊ ¿¡
³ÊÁö ÝÂߤúþ ÝÂà°Ð︦ ÞÅéÄÇÏ¿© Ý×áÈÀÇ öÙîêïïÓø¸¦ ö´ïÒÇÏ¿´À¸¸ç ÝÂÎÃÎÃÓøͪ¸¦ ÞÅéÄÇÏ¿© Ò±
ß«àõÀ» Ëþ÷ÐÇÑ Ì¿Íý ´ÙÀ½°ú °°Àº Ì¿ÒÕÀ» ¾ò¾ú´Ù.
1. 30-40joules/§²ÀÇ ·¹ÀÌÀú ,ðÎÞÒÏØ¿¡¼­ öÍØüÀÇ ë×ùêÀ» º¸¿´´Ù.
2. 50-60joules/§²ÀÇ ·¹ÀÌÀú ,ðÎÞÒÏØ¿¡¼­ öÍØüÀÇ ÷òÎÕ¸¦ º¸¿´´Ù.
3. ·¹ÀÌÀú ðÎÞÒÏØ¿¡ Ý×áÈÀÇ öÙ÷âåÖÀÌ ¸¹¾ÒÀ¸¸ç ¿¡³ÊÁö ñòÊ¥¿¡ µû¶ó ñòÊ¥ÇÏ¿´´Ù.
4. 40joules/§²ÀÇ ·¹ÀÌÀú ,ðÎÞÒÏØ¿¡¼­ ұ߫àõÀÌ °¡Àå ³ô¾Ò´Ù.
5. ·¹ÀÌÀú ðÎÞÒ¿¡ ëîÇØ Ý×áÈÀÇ öÙ÷âåÖÀÌ ñòÊ¥ÇÏ¿´´Ù.
#ÃÊ·Ï#
The purpose of this study is to determine the optimum range of laser energy density
at which we may obtain maximum degree of acid resistant activities without damaging
the tooth enamel surfaces in the Presence of 10% stannous fluoride solution. Beam of
CW Nd: YAG laser was irradiated perpendicularly at each 7 different energy levels
range from zero to 60 joules/cm2 with an increment of 10
joules/cm2 on the smooth enamel surface of the extracted noncarious
human first bicuspid.
The author had investigated the tooth surfaces with a Scanning Election Microscope,
and at the same time examined the fluoride contents with an Energy Dispersive
Analysis for X-ray, and then, examined acid resistant activities with a
Spectrophotometer.
The results were as follows:
1) Laser energy density of 30-40 J/cm2 produced the fusion of the
enamed surfaces.
2) Laser energy density of 50-60 J/cm2 produced the cracks and porous
enamed surfaces.
3) Laser irradiated groups were contained high fluoride contents. The more energy
increased, the more fluordie contents increased.
4) Laser energy density of 40 J/cm2 yields the high acid resistant
activities.
5) The fluoride contents were increased by lastir irradiation.

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