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Effect of Noise Cancelling Devices on Dental Handpieces Using Ear Model

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Abstract

ÀÌ ¿¬±¸´Â Ä¡°ú ÇÚµåÇǽºÀÇ ¼ÒÀ½ ¼öÁØ°ú ¼ÒÀ½ Àú°¨ ÀåÄ¡ÀÇ È¿°ú¸¦ Æò°¡Çϱâ À§ÇÑ °ÍÀÌ´Ù. ±Í ¸ðÇüÀº Ä¡°ú¿ë ÇÚµåÇǽº ÀÛµ¿ Áß¿¡ ³»ÀÌ¿¡ Àü´ÞµÇ´Â ¼ÒÀ½ÀÇ ¼öÁØÀ» ÃøÁ¤ÇÒ ¼ö ÀÖµµ·Ï ¼³°èµÇ¾ú´Ù. ¼ÒÀ½ÀÇ Å©±â´Â ±Í ¸ðÇü°ú ÈÞ´ë¿ë ¼ÒÀ½ ÃøÁ¤±â¸¦ »ç¿ëÇÏ¿© ´Ù¾çÇÑ Á¶°Ç¿¡¼­ ÃøÁ¤µÇ¾ú´Ù. ½ÃÆǵǴ 4Á¾ÀÇ ¼ÒÀ½ Àú°¨ ÀåÄ¡¸¦ ±Í ¸ðÇü¿¡ Àû¿ëÇÑ ÈÄ °°Àº Á¶°Ç¿¡¼­ ¼ÒÀ½ ¼öÁØÀ» ÃøÁ¤ÇÑ µÚ ºñ±³ÇÏ¿´´Ù. Ä¡°ú ÇÚµåÇǽºÀÇ ¼ÒÀ½ ¼öÁØÀº Á¶°Ç¿¡ µû¶ó ¾à 82.5 - 84.4 dBÀ̾ú´Ù. 4Á¾ÀÇ ¼ÒÀ½ Àú°¨ ÀåÄ¡¸¦ Àû¿ëÇßÀ» ¶§ ¼ÒÀ½Àº 67.4 - 73.8 dB·Î°¨¼ÒÇß´Ù. 4Á¾ÀÇ ÀåÄ¡ ¸ðµÎ ÇÚµåÇǽºÀÇ ¼ÒÀ½À» ÁÙÀ̴µ¥ À¯ÀÇÇÑ È¿°ú°¡ ÀÖ¾ú´Ù. °­µµ¿Í ³ëÃ⠽ð£À» °í·ÁÇÒ ¶§, Ä¡°ú ¼ÒÀ½Àº Ä¡°ú ÀÇ·áÁø¿¡°Ô û·Â ¼Õ»óÀ» ÀÏÀ¸Å³ ¼ö ÀÖ´Ù. Á÷¾÷Àû û·Â ¼Õ»ó À§ÇèÀ» ¿¹¹æÇϱâ À§ÇؼÒÀ½ Àú°¨ ÀåÄ¡ »ç¿ëÀ» °í·ÁÇÒ ¼ö ÀÖ´Ù.

This study intended to evaluate noise level of dental handpieces and the effects of noise cancelling devices. An ear model was designed to measure the level of the noise delivered to the inner ear during dental handpiece operation. The level of noise was measured in various conditions using the ear model and the portable noise meter. Noise level was measured again after applying of 4 different noise cancelling devices to the model ear. The noise level of dental handpieces was 82.5 - 84.4 dB. When 4 types of noise canceling devices were applied, the noise level reduced to 67.4 - 73.8 dB. All 4 devices had statistically significant effect in reducing the noise of the handpiece. Considering the intensity and exposure time, noise in dental clinics can cause hearing damage to dentists. For protection from the risk of occupational hearing damages, noise canceling devices can be recommended.

Å°¿öµå

Noise; Dental handpiece; Noise cancelling; Hearing protection

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