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Assessment of the fit of zirconia-based prostheses fabricated with two different scan methods

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ÃÖÇö¼® ( Choi Hyun-Suk ) - °æºÏ´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
Á¶ÁøÇö ( Cho Jin-Hyun ) - °æºÏ´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç

Abstract

¸ñÀû:¿¬±¸ÀÇ ¸ñÀûÀº µ¿ÀÏÇÑ Áö´ëÄ¡¿¡¼­ °¢°¢ ¸ðµ¨½ºÄµ ¹æ¹ý°ú ±¸°­ ³» ½ºÄµ ¹æ¹ýÀ¸·Î Á¦ÀÛµÈ Áö¸£ÄÚ´Ï¾Æ º¸Ã¶¹°ÀÇ º¯¿¬ ¹× ³»¸éÀûÇÕµµ¸¦ ºñ±³ÇÏ´Â °ÍÀÌ´Ù.

Àç·á ¹× ¹æ¹ý:¹ß°ÅµÈ »ç¶÷ÀÇ ÇÏ¾Ç Á¦1´ë±¸Ä¡ 20°³¿¡ ´ëÇØ Áö¸£ÄÚ´Ï¾Æ º¸Ã¶¹°À» À§ÇÑ Áö´ëÄ¡ Çü¼ºÀÌ ÀÌ·ç¾îÁ³´Ù. ù ¹ø° ±×·ì¿¡¼­´Â ¸ðµ¨ ½ºÄµ¹ýÀ¸·Î 10°³ÀÇ Áö´ëÄ¡¸¦ ½ºÄµÇÏ¿´°í, µÎ ¹ø° ±×·ì¿¡¼­´Â ³ª¸ÓÁö 10°³¿¡ ´ëÇØ ±¸°­ ³» ½ºÄµ¹ýÀ» »ç¿ëÇÏ¿´´Ù. °¢°¢ÀÇ µ¥ÀÌÅ͵éÀº ¼ÒÇÁÆ®¿þ¾î ½Ã½ºÅÛÀ¸·Î Àü¼ÛµÇ¾ú°í Ceramill CAD/CAM systemÀ» ÀÌ¿ëÇÏ¿© 20°³ÀÇ Áö¸£ÄÚ´Ï¾Æ º¸Ã¶¹°À» Á¦ÀÛÇÏ¿´´Ù. ¸ÕÀú weight techniqueÀ» »ç¿ëÇÏ¿© ³»¸é ÀûÇÕµµ¸¦ Æò°¡ÇÏ¿´´Ù. ´ÙÀ½À¸·Î replica technique¿¡¼­´Â ±¤ÇÐÇö¹Ì°æÀ» ÅëÇØ º¯¿¬ ÀûÇÕµµ¸¦ Æò°¡ÇÏ¿´´Ù. Åë°è󸮴 ÀÏ¿ø¹èÄ¡ºÐ»êºÐ¼®À» ÀÌ¿ëÇÏ¿´´Ù.

°á°ú:¸ÕÀú weight technique¿¡¼­ ¸ðµ¨ ½ºÄµ¹ýÀ¸·Î Á¦ÀÛÇÑ ±×·ì¿¡¼­ ±¸°­ ³» ½ºÄµ¹ýÀ¸·Î Á¦ÀÛÇÑ ±×·ì¿¡ ºñÇØ Æò±ÕÀûÀÎ ¹«°Ô °ªÀÌ ³·°Ô ³ªÅ¸³µ°í, ÀÌ´Â À¯ÀǼºÀÌ ÀÖ¾ú´Ù(P < .05). ¶ÇÇÑ, replica technique¿¡¼­µµ ÃøÁ¤µÈ 5°³ÀÇ ¿µ¿ª ¸ðµÎ¿¡¼­ ±¸°­ ³» ½ºÄµ¹ýÀ¸·Î Á¦ÀÛÇÑ ±×·ì¿¡ ºñÇØ ¸ðµ¨ ½ºÄµ¹ýÀ¸·Î Á¦ÀÛÇÑ ±×·ì¿¡¼­ º¯¿¬ ¹× ³»¸éÀÇ gap¿¡ ´ëÇÑ °Å¸® °ªÀÌ À¯ÀÇÇÏ°Ô ³·°Ô ³ªÅ¸³µ´Ù(P < .05).

°á·Ð:µÎ ±×·ìÀÇ ¹æ¹ýÀ¸·Î Á¦ÀÛÇÑ Áö¸£ÄÚ´Ï¾Æ º¸Ã¶¹°Àº ¸ðµÎ ÀÓ»óÀûÀ¸·Î ¹Þ¾Æµé¿©Áú ¸¸ÇÑ º¯¿¬ ¹× ³»¸é ÀûÇÕ¼ºÀ» º¸¿´´Ù. ÇÏÁö¸¸ ¸ðµ¨ ½ºÄµ¹ýÀ¸·Î Á¦ÀÛÇÑ ±×·ì¿¡¼­ ±¸°­ ³» ½ºÄµ¹ýÀ¸·Î Á¦ÀÛÇÑ ±×·ì¿¡ ºñÇØ ³ôÀº º¯¿¬ ¹× ³»¸é ÀûÇÕ¼ºÀ» º¸¿´´Ù.

PURPOSE: This research was conducted to compare the marginal and internal fit of zirconia prostheses fabricated with the model scan method and the intraoral scan method.

MATERIALS AND METHODS: In this study, 20 extracted human mandibular first molar was used in the preparation of abutment tooth for the fabrication of zirconia prostheses. In the first group, the model scan method was applied on 10 prepared teeth. In the other group, the intraoral scan method was used on other 10 prepared teeth. Datum of both groups were transmitted to the software system. Afterwards, 20 zirconia prostheses were fabricated using the Ceramill system. Weight technique was used to evaluate the internal gap of the zirconia prostheses. In the Replica technique, marginal gap of the zirconia prostheses were analyzed by optical microscopy. Statistical analysis was based on one-way ANOVA.

RESULTS: Model scan group showed lower average weight than intraoral scan group when weight technique was applied, which has significance (P < .05). Also, model scan group showed significantly lower figures in all 5 measurements of replica technique than intraoral scan group (P < .05).

CONCLUSION: Zirconia prostheses of both groups demonstrated clinically acceptable margin and internal fit. However, model scanned zirconia prostheses showed higher marginal and internal fit than intraoral scanned crowns.

Å°¿öµå

Áö¸£ÄÚ´Ï¾Æ º¸Ã¶¹°; ¸ðµ¨ ½ºÄµ¹ý; ±¸°­ ³» ½ºÄµ¹ý; Weight technique; Replica technique
Zirconia-based prostheses; Model scan method; Intraoral scan method; Weight technique; Replica technique

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