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Treatment of dental caries by er:YAG laser in children

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ÀÌâ¼· ( Lee Chang-Seep ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

1960³â´ë ÃÖÃÊ·Î Ruby ·¹ÀÌÀúÀÇ °³¹ß ÀÌ·¡·Î, Ä¡°ú¿ë µå¸±ÀÎ °í¼Ó¿ë ÇÚµåÇǽº¸¦ ´ë½ÅÇØ Ä¡¾Æ °æÁ¶Á÷ »èÁ¦¿¡ ·¹ÀÌÀúÀÇ Àû¿ëÀÌ ½ÃµµµÇ¾îÁ® ¿À°í Àִµ¥, ÃÖ±Ù Er:YAG ·¹ÀÌÀúÀÇ °³¹ß·Î °æÁ¶Á÷ »èÁ¦½Ã À̵éÀÇ »èÁ¦ È¿´É°ú Ä¡ÁúÀÇ ¿Âµµ»ó½Â¿¡ °üÇÑ ¿¬±¸¿¡ °ü½ÉÀÌ Áõ´ëµÇ¾ú´Ù.

°ú°Å ¿©·¯ Á¾·ùÀÇ ·¹ÀÌÀú¿¡ ºñÇØ 2.94um Er:YAG ·¹ÀÌÀú´Â ÆÄÀåÀÇ Æ¯¼ºÀÌ Ä¡ÁúÀÇ ¼öºÐ°ú ÇÏÀ̵å·Ï½Ã¾ÆÆÄŸÀÌÆ®¿¡ ¸Å¿ì Èí¼öÀ²ÀÌ ³ô¾Æ Ä¡Áú³» ¼öºÐÀÌ °í¿­¿¡ ÀÇÇØ Áõ±âÈ­µÇ¾î Æø¹ßÇϹǷνá Ä¡ÁúÀÌ Á¦°ÅµÇ¹Ç·Î crackÀ̳ª źȭµÈ ºÎÀ§°¡ ¾øÀÌ ¿Íµ¿ º¯¿¬ºÎ°¡ ¸íÈ®ÇÏ°í ±ú²ýÇϸç È¿°úÀûÀÎ Ä¡ÁúÀÇ »èÁ¦°¡ °¡´ÉÇÏ´Ù. »èÁ¦½Ã Ä¡Áú³» ¿Âµµ »ó½ÂÀÌ ·¹ÀÌÀúÀÇ °æÁ¶Á÷ Àû¿ë½Ã °í·ÁµÇ´Â Áß¿äÇÑ ¹®Á¦Á¡À¸·Î ´ëµÎµÇ³ª ÀÌ´Â ¹°ºÐ»ç¿Í ÀûÀûÇÑ ·¹ÀÌÀú parameterÀÇ »ç¿ëÀ¸·Î ¿­ ¹ß»ýÀ» ÃÖ¼ÒÈ­Çϸé Ä¡¼ö ¼Õ»óÀÌ ¹ß»ýÇÏÁö ¾Ê´Â´Ù°í º¸°í µÈ´Ù. º»Áõ·Ê´Â Ä¡¼ö¿¡ ±ÙÁ¢ÇÏÁö ¾ÊÀº ¿ì½Ä º´¼ÒÀÇ Ã³Ä¡¸¦ ÁÖ¼Ò·Î ³»¿øÇÑ ¼Ò¾Æ ȯÀڵ鿡 À־ Er:YAG ·¹ÀÌÀú Àû¿ë½Ã ±âÁ¸ÀÇ °í¼Ó¿ë »èÁ¦ ±â±¸¿¡ ºñÇØ ¼ÒÀ½°ú Áøµ¿ÀÌ Àû¾î ¼Ò¾Æ ȯÀÚµéÀÇ Ä¡°ú Ä¡·á¿¡ ´ëÇÑ °øÆ÷°¨À̳ª µ¿ÅëÀ» ÃÖ¼Ò·Î Çϸç ÀûÀýÇÑ ·¹ÀÌÀú parameter¿Í ¹°ºÐ»çÀÇ »ç¿ëÀ¸·Î Ä¡¼ö¿¡ ´ëÇÑ ¿­ÀÚ±ØÀ̳ª Ä¡ÁúÀÇ º¯»ö°ú °°Àº ÀÓ»óÀûÀÎ ¹®Á¦¸¦ ÃÊ·¡ÇÏÁö ¾Ê°í È¿°úÀûÀ¸·Î ¿ì½Ä º´¼ÒÀÇ Á¦°Å ¹× ¿Íµ¿ Çü¼ºÀ» ½ÃÇàÇÒ ¼ö ÀÖ¾ú´Ù.

The lasers have been used in dentistry for more than 30 years and the application of lasers for drilling dental hard tissue has been investigated since the early development of lasers. Recently, the Er:YAG laser was invented for hard tissue ablation.

The Er:YAG laser, having a wavelength of 2.94um, is highly absorbed in both water and hydroxiapatite, leading to a very effective material for hard tissue removal by bursting off the solid tissue component : that is, enamel and dentin are removed by the Er:YAG laser by water vaporization and microexplosion, without any melting of inorganic tissues. Therefore, the Er:YAG laser produced round craters with well defined margins and the surrounding tissues had no cracks and no charring.

When used for cavity preparation, pulpal damage should not occur if hear buildup is minimized by careful selection of exposure parameters and by use of a water spray.

The present study demonstrated that the Er:YAG laser cut the tooth substance adequately for composite resin restoration, without having undesirable side effects such as harmful effects on the pulp, discoloration or cracking etc.

Also, the child patients were well cooperative during laser treatment mainly because of little noise, lesser vibration and minimal pain compared to conventional means of cavity preparation.

Å°¿öµå

Er: YAG ·¹ÀÌÀú Ä¡Áú »èÁ¦ ¹Ì¼¼ Æø¹ß ¹° ºÐ»ç ·¹ÀÌÀú parameter
Er: YAG laser;Hard tissue ablation;Microexplosion;Water spray;Laser parameter

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