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Comparison of the outcomes of three-dimensional finite element analysis under arbitrary and realistic occlusal loading conditions in mandibular posterior region

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ÀÌ¿ø¼·, Alom Ghaith, ±è¸í¼ö, ¹Ú¿µ¼®, ÀÓ¿µÁØ, ±è¸íÁÖ, ±ÇÈ£¹ü,
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ÀÌ¿ø¼· ( Lee Won-Sup ) - Seoul National University School of Dentistry Department of Prosthodontics
 ( Alom Ghaith ) - Seoul National University School of Dentistry Department of Prosthodontics
±è¸í¼ö ( Kim Myung-Soo ) - Seoul National University Department of Computer Science and Engineering
¹Ú¿µ¼® ( Park Young-Seok ) - Seoul National University School of Dentistry Department of Oral Anatomy
ÀÓ¿µÁØ ( Lim Young-Jun ) - Seoul National University School of Dentistry Department of Prosthodontics
±è¸íÁÖ ( Kim Myung-Joo ) - Seoul National University School of Dentistry Department of Prosthodontics
±ÇÈ£¹ü ( Kwon Ho-Beom ) - Seoul National University School of Dentistry Department of Prosthodontics

Abstract

¸ñÀû: º» ¿¬±¸ÀÇ ¸ñÀûÀº ÇÏ¾Ç ±¸Ä¡ºÎ¿¡¼­ µÎ °¡Áö ¼­·Î ´Ù¸¥ ºÎÇÏ ¾ç½Ä¿¡ µû¸¥ »ý¿ªÇÐÀû °á°ú¸¦ ºñ±³ÇÏ´Â °ÍÀ̾ú´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: ÇÏ¾Ç ±¸Ä¡ºÎ ÀÚ¿¬Ä¡¿­ ¹× ÀÓÇöõÆ® ¸ðµ¨À» Á¦ÀÛÇÏ¿´À¸¸ç, ÀÓÀÇ·Î ºÎ¿©µÈ ±³ÇÕ°ú ¾ÆÅ¥¶ó µðÁöÅÐ ±³ÇÕÃøÁ¤ÀåÄ¡·Î ȹµæÇÑ ½ÇÁ¦ ±³ÇÕ µÎ °¡Áö ÇÏÁß Á¶°ÇÀ» ºÎ¿©ÇÏ¿´´Ù. ÀÓÀÇ·Î ºÎ¿©µÈ ±³ÇÕÀÇ °æ¿ì, ÃÑ 100 N ÇÏÁßÀ» ±³ÇÕÁ¡¿¡ ±ÕÀÏÇÏ°Ô ¹èºÐÇÏ¿´À¸¸ç, ½ÇÁ¦ ±³ÇÕÀÇ °æ¿ì´Â ÃÑ 100 N ÇÏÁßÀ» ¾ÆÅ¥¶ó(Accura, Dmetec Co. Ltd., Seoul, Korea)·Î ÃøÁ¤µÈ Á¤º¸¿¡ ±Ù°ÅÇÏ¿© ±³ÇÕÁ¡¿¡ Â÷µî ¹èºÐÇÏ¿´´Ù. ÇÏÁß¿¡ ´ëÇÑ ÀÀ·Â°ú º¯À§¸¦ À¯ÇÑ¿ä¼ÒÇؼ®À» ÀÌ¿ëÇÏ¿© ºÐ¼®ÇÏ¿´´Ù.

°á°ú: À¯ÇÑ¿ä¼ÒÇؼ® °á°ú, ¼­·Î ´Ù¸¥ ºÎÇÏ Á¶°Ç ÇÏ¿¡¼­ µî°¡ÀÀ·Â ¹× º¯À§ ¸ðµÎ »ó´çÇÑ Â÷À̸¦ º¸¿´´Ù.

°á·Ð: À¯ÇÑ¿ä¼ÒÇؼ® ¼öÇà ½Ã Á¤È®ÇÑ ÃøÁ¤¿¡ ±â¹ÝÇÑ ½ÇÁ¦ ±³ÇÕ¿¡ °¡±î¿î ºÎÇÏ Á¶°ÇÀ» ÀçÇöÇÏ´Â °ÍÀÌ ÃßõµÈ´Ù.

Purpose: The purpose of this study was to compare the biomechanical outcome in the mandibular posterior region between two different loading conditions by finite element analysis.

Materials and Methods: The mandibular posterior teeth model and the implant model were generated for the study. And 2 different types of loading conditions were provided: Arbitrary occlusion and natural occlusion obtained from the digital occlusal analyzer, Accura (Accura, Dmetec Co. Ltd., Seoul, Korea). Total load of 100 N was evenly distributed over arbitrary occlusion points, and 100 N load was differentially distributed over natural occlusion points according to Accura data. The biomechanical outcome was evaluated by the finite element analysis software.

Results: The result of finite element analysis showed considerable difference in both von Mises stress pattern and displacement under different loading conditions.

Conclusion: In finite element analysis, it is recommended to simulate a reali

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digital occlusal analyzer; occlusion; finite element analysis

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