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A Study on the Fitness of Adjustable Dental Impression Trays on the Chinese and Japanese

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°­ÇÑÁß ( Kang Han-Joong ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
µ¿Áø±Ù ( Dong Jin-Keun ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
ÃÖÁ¾ÀΠ( Choi Jong-In ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡ÀÇÇдëÇпø º¸Ã¶Çб³½Ç
ÀÌÁøÇÑ ( Lee Jin-Han ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
ÀÌÀμ· ( Lee In-Seop ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç

Abstract

¿¬±¸¸ñÀû: º» ¿¬±¸´Â °¡º¯Çü Æ®·¹ÀÌ °³¹ßÀÇ ÀÏȯÀ¸·Î ±× ½ÃÁ¦Ç°À» Á¦ÀÛÇÏ°í ºñ°¡¿ª¼º ¼ö¼º ÄÝ·ÎÀ̵å ÀλóÀ縦 »ç¿ëÇÏ¿© Áß±¹Àΰú ÀϺ»ÀÎ ¿¡¼­ Àλóäµæ ½Ã Æ®·¹ÀÌÀÇ ±¸°­ ³» ÀûÇÕ¼º¸¦ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.

¿¬±¸Àç·á ¹× ¹æ¹ý: °¡º¯Çü Æ®·¹ÀÌ´Â Çѱ¹ ¼ºÀÎ ¾Ç±ÃÀÇ Å©±â ºÐ¼®°á°ú¸¦ ±âº»À¸·Î ÇÏ¿© ¼³°èÇÏ¿´À¸¸ç, ¸ÕÀú CAD-CAM ÀÛ¾÷À» ÅëÇÏ¿© °ß º» ¸ðÇüÀ» Á¦ÀÛÇÑ ÈÄ, À̸¦ ¶È°°ÀÌ º¹Á¦ÇÑ ½Ç¸®ÄÜ °£À̱ÝÇüÀ» ¸¸µé¾ú´Ù. ±×¸®°í ÀÌ ±ÝÇü¿¡ polyurethaneÀ» ÁÖÀÔÇÏ¿© ´Ù¼öÀÇ ½ÃÁ¦Ç°À» ¿Ï¼º ÇÏ¿´´Ù. ½ÃÁ¦Ç°À» ÀÌ¿ëÇÏ¿© Áß±¹ÀÎÀ¸·Î´Â »óÇØ Á¦2ÀÇ°ú´ëÇб³ ±¸°­ÀÇÇпø Çлý 60¸í (³²ÀÚ 30¸í, ¿©ÀÚ 30¸í)À» ´ë»óÀ¸·Î ÇÏ¿´°í, ÀϺ»ÀÎÀ¸ ·Î´Â ÀϺ» ±¸¸¶¸ðÅä °íµîÇб³ Á¹¾÷»ý 60¸í (³²ÀÚ 30¸í, ¿©ÀÚ 30¸í)À» ´ë»óÀ¸·Î ÀλóäµæÀ» ½Ç½ÃÇÏ°í, ÃøÁ¤ºÎÀ§º°·Î ÀλóüÀÇ µÎ²²¿Í ±æÀÌ ¸¦ ÃøÁ¤ÇÑ ÈÄ Åë°è󸮸¦ ÇÏ¿© ±× ÀûÇÕ¼ºÀ» Æò°¡ÇÏ¿´´Ù.

°á°ú:
1. Áß±¹Àΰú ÀϺ»ÀÎ ¸ðµÎ ½ºÅ¾°ú °æ»ç¸é¿¡ ÀÇÇØ Æ®·¹ÀÌÀÇ ÆøÀÌ ÀûÀýÈ÷ Á¶ÀýµÇ¾î ´ëüÀûÀ¸·Î 3-6mmÀÇ ±ÕÀÏÇÑ ÀλóüÀÇ µÎ²²¸¦ ¾òÀ» ¼ö ÀÖ¾ú´Ù.
2. Áß±¹ÀÎÀÇ »ó¾Ç Æ®·¹ÀÌ¿¡¼­´Â ÀüÄ¡ ¼øÃø º¯¿¬ºÎ¿¡¼­ µÎ²²°¡ 6.2mm, °ßÄ¡ ¼øÃø º¯¿¬ºÎ¿¡¼­ µÎ²²°¡ 5.9mm, ±¸°³ºÎ Áß¾ÓÀº 10.5
mm, ±¸°³ºÎ ÈĹæÀº 9.7mm ³ôÀÌ·Î ºñ±³Àû ÀλóüÀÇ µÎ²²°¡ Å©°Ô ÃøÁ¤µÇ¾ú´Ù.
3. Áß±¹ÀÎÀÇ ÇÏ¾Ç Æ®·¹ÀÌ¿¡¼­´Â Á¦1, 2¼Ò±¸Ä¡ Á¢ÃËÁ¡ ¼³Ãø º¯¿¬ºÎ¿¡¼­ ÀλóüÀÇ ±æÀÌ°¡ 8.9mm, ÀüÄ¡ ¼³Ãø º¯¿¬ºÎ¿¡¼­ 7.2mm·Î ±æ°Ô ³ªÅ¸³µÀ¸¸ç, °ßÄ¡ ¼øÃø 6.8mm, ¼Ò±¸Ä¡ ¼øÃø 7.0mm·Î ÀλóüÀÇ µÎ²²°¡ Å©°Ô ÃøÁ¤µÇ¾ú´Ù.
4. ÀϺ»ÀÎÀÇ »ó¾Ç Æ®·¹ÀÌ¿¡¼­´Â ÀüÄ¡ ¼øÃø º¯¿¬ºÎ¿¡¼­ µÎ²²°¡ 7.4mm, °ßÄ¡ ¼øÃø º¯¿¬ºÎ¿¡¼­ 7.7mm, ±¸°³ºÎ Áß¾ÓÀº 9.1mm ³ôÀÌ·Î ÀλóüÀÇ µÎ²²°¡ ºñ±³Àû Å©°Ô ÃøÁ¤µÇ¾ú´Ù.
5. ÀϺ»ÀÎÀÇ ÇÏ¾Ç Æ®·¹ÀÌ¿¡¼­´Â °ßÄ¡ ¼øÃø 7.4mm, Á¦1, 2¼Ò±¸Ä¡ Á¢ÃËÁ¡ ¼øÃø º¯¿¬ºÎ 8.4mm·Î ÀλóüÀÇ µÎ²²°¡ Å©°Ô ÃøÁ¤µÇ¾ú´Ù.
°á·Ð: º» °¡º¯Çü Ä¡°ú Àλó¿ë Æ®·¹ÀÌ´Â Çѱ¹ÀÎ ¸ðÇü °èÃøÄ¡¸¦ ¹ÙÅÁÀ¸·Î ¼³°èµÇ¾î Çѱ¹Àο¡¼­ ÀûÇÕ¼ºÀÌ ¿ì¼öÇϸç, º» ½ÇÇèÀÇ °á°ú Áß±¹Àΰú ÀϺ»Àο¡¼­µµ ÀûÇÕ¼ºÀÌ ÁÁ¾Æ º» Æ®·¹À̸¦ ¹ü¿ëÇÏ¿© ½±°í Á¤È®ÇÑ ÀλóäµæÀ» ÇÒ ¼ö ÀÖÀ» °ÍÀÌ´Ù.

Purpose: This study was designed to investigate the fitness of adjustable dental impression trays on the Chinese and the Japanese.

Material and methods: Initial design of the adjustable dental trays was developed from the results of the dental arch size of Korean adults. This design was applied to the CAD-CAM process in order to create tray model samples.
Simple silicon-base molds were then replicated based on these sample models. Polyurethane injection into the silicon-
base molds completed the process of creating a large number of test products. 60 Chinese dental students (male:30, female:30) from the Shanghai Second Medical University and 60 Japanese alumni from the Kumamoto high school (male:30, female:30) were selected for taking irreversible hydrocolloid impression with these trays. The width and length of the impression body were measured on several measuring points by Vernier caliper. The results were analyzed
statistically to evaluate the fitness of the trays.

Results: 1. Uniform impression material thickness was achieved on the Chinese and Japanese by controlling the width of the tray using stops and beveled guides. The material thickness was generally within the range of 3 mm to 6 mm. 2. In the maxillary tray of the Chinese, average thickness of the impression material of the labial vestibule of the incisal teeth was 6.2 mm, the canine was 5.9 mm and the midpalatal part 10.5 mm and the posterior palatal part 9.7 mm. These were relatively large values. 3. In the mandibular tray of the Chinese, average length of the impression material of the lingual vestibule of first, second premolar contact point was 8.9 mm, the incisal teeth was 7.8 mm and thickness of the labial part of canine was 6.8 mm and premolars 7.0 mm. These were relatively large values. 4. In the maxillary tray of the Japanese, average thickness of the impression material of the labial vestibule of the incisal teeth was 7.4 mm, the canine was 7.7 mm and the midpalatal part 9.1 mm. These were relatively large values. 5. In the mandibular tray of the Japanese, average thickness of the impression material of the labial vestibule of first, second premolar contact point was 8.4 mm, and thickness of the labial part of canine was 7.4 mm. These were relatively large values.

Conclusion: This adjustable dental tray shows good accuracy to Korean because it was designed by the analysis of the dental arch size of Korean adult model. With this result, it can be applied to Chinese and Japanese, we can take more easy and accurate dental impressions.

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Adjustable dental impression tray;Fitness;Chinese;Japanese

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KCI
KoreaMed