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The effect of a titanium socket with a zirconia abutment on screw loosening after thermocycling in an internally connected implant: a preliminary study

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°æ±Ô¿µ ( Kyung Kyu-Young ) - ¿ï»ê´ëÇб³ ÀÇ°ú´ëÇÐ ¼­¿ï¾Æ»êº´¿ø Ä¡°úº¸Ã¶°ú
Â÷Çö¼® ( Cha Hyun-Suk ) - ¿ï»ê´ëÇб³ ÀÇ°ú´ëÇÐ ¼­¿ï¾Æ»êº´¿ø Ä¡°úº¸Ã¶°ú
ÀÌÁÖÈñ ( Lee Joo-Hee ) - ¿ï»ê´ëÇб³ ÀÇ°ú´ëÇÐ ¼­¿ï¾Æ»êº´¿ø Ä¡°úº¸Ã¶°ú

Abstract

¸ñÀû: ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº ŸÀÌŸ´½ ±¸¼º¿ä¼Ò¸¦ °¡Áø Áö¸£ÄÚ´Ï¾Æ Áö´ëÁÖ°¡ ³»ºÎ¿¬°á ÀÓÇöõÆ®¿¡ »ç¿ëµÇ¾úÀ» ¶§ ³ª»ç Ç®¸²¿¡ ´ëÇØ ¾Ë¾Æº¸´Â °ÍÀÌ´Ù. ¿­¼øȯ ÈÄ Å¸ÀÌŸ´½ ¼ÒÄÏÀ» °¡Áø Áö¸£ÄÚ´Ï¾Æ Áö´ëÁÖ¿Í Å¸ÀÌŸ´½ Áö´ëÁÖÀÇ ³ª»ç Ç®¸²°ú Á¦°Å·ÂÀ» ºñ±³ ºÐ¼®ÇÏ¿´´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: ³»Ãø¿¬°á ÀÓÇöõÆ®¿Í ³»Ãø¿¬°á ŸÀÌŸ´½ Áö´ëÁÖ, ŸÀÌŸ´½ ¼ÒÄÏÀ» °¡Áø ¿ÜÃø¿¬°á Áö¸£ÄÚ´Ï¾Æ Áö´ëÁÖ¸¦ ÁغñÇÏ¿´´Ù. ³»ºÎ¿¬°áÇü ÀÓÇöõÆ®¿¡ 5°³ÀÇ Å¸ÀÌŸ´½ Áö´ëÁÖ¸¦(´ëÁ¶±º), ŸÀÌŸ´½ ¼ÒÄÏÀ» °¡Áø 5°³ÀÇ Áö¸£ÄÚ´Ï¾Æ Áö´ëÁÖ(½ÇÇ豺)¸¦ °¢°¢ ¿¬°áÇÏ°í 30 NcmÀÇ ÅäÅ©·Î Á¶ÀÎ ÈÄ ¿­¼øȯ ó¸® ÀüÈÄÀÇ Áö´ëÁÖ ³ª»ç Á¦°Å·ÂÀ» ÃøÁ¤ÇÏ¿´´Ù. °¢ ½ÃÆíµéÀº ¿­¼øȯ ÀåÄ¡ÀÇ ¼öÁ¶¿¡¼­ 5¡ÆC¿Í 55¡ÆCÀÇ ¹°¿¡ 60Ãʾ¿ ±³´ë·Î 2,000ȸÀÇ ¿­¼øȯÀ» ½ÃÇàÇÏ¿´´Ù. °¢ ½ÃÆíÀÇ ³ª»ç Ç®¸²À» Á¶»çÇÏ°í ¿­¼øȯ ÀüÈÄ¿¡ ³ª»ç Á¦°Å·ÂÀ» Åë°èÇÐÀûÀ¸·Î ºÐ¼®ÇÏ¿´´Ù.

°á°ú: µÎ ±×·ì ¸ðµÎ¿¡¼­ ¿­¼øȯ ÈÄ Áö´ëÁÖ ³ª»ç Ç®¸²À» º¸ÀÌÁö ¾Ê¾Ò´Ù. ¿­¼øȯ ÀüÈÄÀÇ ³ª»ç Á¦°Å·Â Â÷ÀÌ´Â ´ëÁ¶±º¿¡¼­ -1.34 ¡¾ 2.53 Ncm, ½ÇÇ豺¿¡¼­ -1.26 ¡¾ 2.06 Ncm ·Î ³ªÅ¸³µ´Ù. µ¶¸³Ç¥º» T Åë°èºÐ¼® °á°ú µÎ ±º°£¿¡ À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù(P > 0.05).

°á·Ð: ÀÌ ½ÇÇèÀÇ °á°ú ³»¿¡¼­ ³»ºÎ¿¬°á ÀÓÇöõÆ®¸¦ À§ÇÑ Áö¸£ÄÚ´Ï¾Æ Áö´ëÁÖ ³» ŸÀÌŸ´½ ¼ÒÄÏÀÌ ¿­¼øȯ ÈÄ Áö´ëÁÖ ³ª»çÇ®¸²¿¡ ŸÀÌŸ´½ Áö´ëÁÖ¿Í ºñ±³ÇÏ¿© À¯ÀÇÇÑ ¿µÇâÀ» ³ªÅ¸³»Áö ¾Ê¾Ò´Ù.

Purpose: The aim of this study was to investigate the effects of a titanium component for the zirconia abutment in the internal connection implant system on screw loosening under thermocycling conditions.

Materials and Methods: Internal connection titanium abutments and external connection zirconia abutments with titanium sockets were connected respectively to screwshaped internal connection type titanium implants with 30 Ncm tightening. These implant-screw-abutment assemblies were divided into two groups of five specimens each; titanium abutments as control and zirconia abutments with titanium sockets as experimental group. The specimens were subjected to 2,000 thermocycles in water baths at 5¡ÆC and 55¡ÆC, with 60 seconds of immersion at each temperature. The removal torque values (RTVs) of the abutment screws of the specimen were measured before and after thermocycling. RTVs pre- and post-thermocycling were investigated in statistics.

Results: There was not screw loosening identified by tactile and visual inspection in any of the specimens during or after thermocycling. The mean RTV difference for the control group and the experimental group were -1.34 ¡¾ 2.53 Ncm and -1.26 ¡¾ 2.06 Ncm, respectively. Statistical analysis using an independent t-test revealed that no significant differences were found in the mean RTV difference of the groups (P > 0.05).

Conclusion: Within the limitations of this in vitro study, the titanium socket for the zirconia abutment did not show a significant effect on screw loosening under thermal stress compared to the titanium abutment in the internal connection implant.

Å°¿öµå

³ª»ç; Áö´ëÁÖ; ÀÓÇöõÆ®; ¿­¼øȯ; Á¦°Å·Â
screw; abutment; implant; thermocycling; removal torque value

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