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Joint stability of internal conical connection abutments with or without hexagon indexes: an in vitro study

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ÀÌ»ó¿î, Â÷¹Î»ó, ÀÌÁöÇý, Á¶¸®¶ó, ¹ÚÂùÁø,
¼Ò¼Ó »ó¼¼Á¤º¸
ÀÌ»ó¿î ( Lee Sang-Woon ) - University of Ulsan College of Medicine Gangneung Asan Hospital Department of Dentistry
Â÷¹Î»ó ( Cha Min-Sang ) - University of Ulsan College of Medicine Gangneung Asan Hospital Department of Dentistry
ÀÌÁöÇý ( Lee Ji-Hye ) - Gangneung-Wonju National University College of Dentistry Department of Prosthodontics
Á¶¸®¶ó ( Cho Lee-Ra ) - Gangneung-Wonju National University College of Dentistry Department of Prosthodontics
¹ÚÂùÁø ( Park Chan-Jin ) - Gangneung-Wonju National University College of Dentistry Department of Prosthodontics

Abstract

¸ñÀû: º» ¿¬±¸ÀÇ ¸ñÀûÀº ³»ºÎ¿¬°á ¿øÃßÇü ÀÓÇöõÆ®ÀÇ À°°¢±¸Á¶ À¯¹«°¡ ÀÓÇöõÆ® Áö´ëÁÖ ÀåÃຯÀ§¿Í ÀÓÇöõÆ® Áö´ëÁÖ ³ª»çÀÇ Ç®¸²ÅäÅ©¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Æò°¡ÇÏ°íÀÚ ÇÏ¿´´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: ³»ºÎ¿¬°á ¿øÃßÇü ÀÓÇöõÆ®¸¦ À°°¢±¸Á¶¸¦ °¡Áø Áö´ëÁÖ ±×·ì(HEX)°ú À°°¢±¸Á¶¸¦ °®Áö ¾Ê´Â Áö´ëÁÖ ±×·ì(CON)À¸·Î ³ª´©°í °¢ ±×·ì ´ç 10½ÖÀÇ ½ÃÆíÀ» ü°áÇÏ¿´´Ù. Áö´ëÁÖ ³ª»ç¸¦ 30 Ncm Á¶ÀÓȸÀü·ÂÀ» °¡ÇÏ¿© ü°áÇÑ µÚ ÀåÃຯÀ§ ¹× Ç®¸²ÅäÅ©°ªÀ» ÃøÁ¤ÇÏ°í 250 N ¼öÁ÷Àû ¹Ýº¹ÇÏÁßÀ» 100,000ȸ °¡ÇÑ µÚ ÀåÃຯÀ§ ¹× Ç®¸²ÅäÅ©°ªÀ» ÃøÁ¤ÇÏ¿´´Ù. °¢ ´Ü°è¸¶´Ù µðÁöÅÐ ¸¶ÀÌÅ©·Î¹ÌÅ͸¦ ÀÌ¿ëÇÏ¿© ÀÓÇöõÆ® Á÷°æ°ú ¼öÁ÷Àû ³ôÀ̸¦ ÃøÁ¤ÇÏ¿´°í ÀüÀÚ ÅäÅ©°ÔÀÌÁö¸¦ ÀÌ¿ëÇÏ¿© Ç®¸²ÅäÅ©°ªÀ» ÃøÁ¤ÇÏ¿´´Ù. °¢ ±º°£ÀÇ °ªÀÇ À¯ÀÇÂ÷¸¦ È®ÀÎÇϱâ À§ÇÏ¿© µ¶¸³ Ç¥º» T °ËÁ¤À» ÀÌ¿ëÇÏ¿© Åë°èºÐ¼®ÇÏ¿´´Ù(¥á = 0.05).

°á°ú: HEX ±ºÀº Á¶ÀÓȸÀü·ÂÀ» °¡ÇÑ µÚ À¯ÀÇÇÏ°Ô ³ôÀº ÀåÃຯÀ§¸¦ ³ªÅ¸³»¿´´Ù(P < 0.05). HEX ±º°ú CON ±ºÀº ¼öÁ÷Àû ¹Ýº¹ÇÏÁß ÈÄ ÀåÃຯÀ§¿¡ À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù(P = 0.052). HEX ±º°ú CON ±ºÀº ¼öÁ÷Àû ¹Ýº¹ÇÏÁß Àü, ÈÄ Ç®¸²ÅäÅ©°ª ¸ðµÎ À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù(P = 0.057 and P = 0.138). ¸ðµç ±×·ì¿¡¼­ ¹Ýº¹ÇÏÁß ÈÄ Ç®¸²ÅäÅ©°ª »ó½ÇÀ²ÀÌ Áõ°¡ÇÏ¿´´Ù(P < 0.05).

°á·Ð: ³»ºÎ¿¬°á ¿øÃßÇü ÀÓÇöõÆ®¿¡¼­ À°°¢±¸Á¶¸¦ °¡Áø °æ¿ì ÀåÃà º¯À§°¡ ´õ ÄÇÀ¸¸ç, ±× ¿ÜÀÇ ¿¬°áºÎ ¾ÈÁ¤¼ºÀº À¯»çÇÏ¿´´Ù. ¸ðµç ±×·ì¿¡¼­ ¹Ýº¹ÇÏÁß ÈÄ Ç®¸²ÅäÅ©°ª »ó½ÇÀ²ÀÌ Áõ°¡ÇÏ¿´´Ù.

Purpose: The purpose of this study was to compare the axial displacement of the hexagonal and conical abutment in internal conical connection implant after screw tightening and cyclic loading.

Materials and Methods: Internal conical connection implants were divided into two groups (n = 10): group HEX, hexagonal abutment; and group CON, conical 2-piece abutments. The axial displacement and removal torque values were measured after 30 Ncm torque tightening and 250N loading test of 100,000 cycles. The Student t test with 5% significance level was used to evaluate the data.

Results: HEX group demonstrated significantly higher axial displacement values after 30 Ncm tightening in comparison to the CON group (P < 0.05). No significant difference was found in axial displacement after cyclic loading (P = 0.052). Removal torque loss before and after the cyclic loading both revealed no significant difference between groups (P = 0.057 and P = 0.138). Removal torque value decreased after cyclic loading in both groups (P < 0.05).

Conclusion: Overall, both abutment with or without hexagon index presented similar biomechanical performance except HEX group demonstrated significantly more axial displacement after applying tightening torque.

Å°¿öµå

³»ºÎ¿¬°á ¿øÃßÇü ÀÓÇöõÆ®; ÀÓÇöõÆ® À°°¢±¸Á¶; ÀåÃຯÀ§; Ç®¸²ÅäÅ©°ª »ó½Ç
morse taper dental implant-abutment interface; dental abutment; hexagon index; axial displacement; removal torque value

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