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Ä¡°ú¿ë ¼¼¶ó¹ÍÀÇ ÆĴܸéºÐ¼®(fractography)¿¡ ´ëÇÑ ¹®Çå°íÂû

Literature review on fractography of dental ceramics

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¼Û¹Î±Ô, Â÷¹Î»ó, °í°æÈ£, ÇãÀ±Çõ, ¹ÚÂùÁø, Á¶¸®¶ó,
¼Ò¼Ó »ó¼¼Á¤º¸
¼Û¹Î±Ô ( Song Min-Gyu ) - Gangneung-Wonju National University College of Dentistry Department of Prosthodontics
Â÷¹Î»ó ( Cha Min-Sang ) - University of Ulsan College of Medicine Gangneung Asan Hospital Department of Dentistry
°í°æÈ£ ( Ko Kyung-Ho ) - Gangneung-Wonju National University College of Dentistry Department of Prosthodontics
ÇãÀ±Çõ ( Huh Yoon-Hyuk ) - Gangneung-Wonju National University College of Dentistry Department of Prosthodontics
¹ÚÂùÁø ( Park Chan-Jin ) - 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

Abstract

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ÆÄÀýÀº ¾ç»ó¿¡ µû¶ó ÁÖ·Î ±Ý¼Ó¿¡¼­ °üÂûµÇ´Â º¸Á¶°³¸ð¾ç ÆÄÀý, ¿­°³, ºÐ¸®ÆÄ¼Õ ¹× ¼¼¶ó¹Í¿¡¼­ °üÂûµÇ´Â ÇÇ·ÎÆÄÀý°ú Á¶°¡ºñ ¸ð¾ç ÆÄÀýÀÌ ÀÖ´Ù. ¼¼¶ó¹ÍÀÇ ÁÖµÈ ÆÄÀý¿øÀÎÀÎ ÇÇ·ÎÆÄÀýÀ» ½ÇÇè½Ç¿¡¼­ ÀçÇöÇϱâ À§ÇØ ´À¸° ±Õ¿­¼ºÀåÀ» °üÂûÇÒ ¼ö Àִµ¿Àû ÇÏÁßÀÌ ÇʼöÀûÀ̸ç ÇÏÁßÁ¶°Ç°ú ÇÏÁßȽ¼ö µîÀ» ÀûÀýÈ÷ ¼³Á¤ÇØ¾ß ÇÑ´Ù. ¼¼¶ó¹ÍÀÇ ÆĴܸ鿡¼­ ³ªÅ¸³ª´Â ´ëÇ¥ÀûÀΠƯ¡Àº ÇØŬÀÌ¸ç ´Ù¾çÇÑ ÇØŬÀÇ ÇüŸ¦ Àß °üÂûÇÏ¿© ¼¼¶ó¹Í ÆÄÀýÀÇ ¿øÀΰú °úÁ¤À» ºÐ¼®ÇÒ ¼ö ÀÖµµ·Ï ÇÏ´Â °ÍÀÌ ÇÊ¿äÇÏ´Ù.
ÆĴܸéºÐ¼®Àº Ä¡°ú¿ë ¼¼¶ó¹ÍÀÇ ÆÄÀýÀ» ½ÉÃþÀûÀ¸·Î ÆľÇÇÒ ¼ö ÀÖ´Â À¯¿ëÇÑ ¹æ¹ýÀ̹ǷΠÁ¤È®ÇÑ ½ÇÇè°úÁ¤À» µû¸£°í °á°úÇؼ®¿¡ À¯ÀÇÇØ¾ß ÇÑ´Ù.

The clinical applicability of ceramics can be increased by analyzing the causes of fractures after fracture testing of dental ceramics.
Fractography to analyze the cause of fracture of dental ceramics is being widely applied with the development of imagingtechnologies such as scanning electron microscopy. Setting the experimental conditions is important for accurate interpretation.
The fractured specimens should be stored and cleaned to avoid contamination, and metal pretreatment is required for betterobservation. Depending on the type of fracture, there are dimple rupture, cleavage, and decohesive rupture mainly observedin metals, and fatigue fractures and conchoidal fractures observed in ceramics. In order to reproduce fatigue fracture in thelaboratory, which is the main cause of fracture of ceramics, a dynamic loading for observing slow crack growth is essential, and theload conditions and number of loads must be appropriately set. A typical characteristic of a fracture surface of ceramic is a hackle,and the causes of fracture vary depending on the shape of hackle. Fractography is a useful method for in-depth understanding offractures of dental ceramics, so it is necessary to follow the exact experimental procedure and interpret the results with caution.

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±Õ¿­¼ºÀå; Ä¡°ú¿ë ¼¼¶ó¹Í; ÆĴܸéºÐ¼®; ÇÇ·ÎÆÄÀý; ÇØŬ
crack growth; dental ceramic; fractography; fatigue fracture; hackle

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