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A study of lower facial change according to facial type when virtually vertical dimension increases

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±è³²¿ì ( Kim Nam-Woo ) - °¡Ãµ´ëÇб³ ±æº´¿ø Ä¡°úº¸Ã¶°ú
À̱àö ( Lee Gung-Chol ) - °¡Ãµ´ëÇб³ ±æº´¿ø Ä¡°ú±³Á¤°ú
¹®Ã¶Çö ( Moon Cheol-Hyun ) - °¡Ãµ´ëÇб³ ±æº´¿ø Ä¡°ú±³Á¤°ú
¹èÁ¤À± ( Bae Jung-Yoon ) - °¡Ãµ´ëÇб³ ±æº´¿ø Ä¡°úº¸Ã¶°ú
±èÁö¿¬ ( Kim Ji-Yeon ) - °¡Ãµ´ëÇб³ ±æº´¿ø Ä¡°úº¸Ã¶°ú

Abstract

¸ñÀû: ¼öÁ÷ ±³ÇÕ °í°æ Áõ°¡ ½Ã ¹ß»ýÇÏ´Â ÇϾȸðÀÇ º¯È­°¡ ¾È¸ðÀÇ À¯Çü¿¡ µû¶ó ¾î¶² Â÷ÀÌ°¡ ÀÖ´Â Áö Æò°¡ÇÏ¿©, ÀÓ»óÀûÀ¸·Î À¯ÀÇÇÏ¿©¾ß ÇÒ ¾È¸ð À¯ÇüÀ» ¾Ë°íÀÚ ÇÑ´Ù.

´ë»ó ¹× ¹æ¹ý: Áø´ÜÀ» À§ÇØ Ãø¸ðµÎºÎ±Ô°Ý¹æ»ç¼±»çÁøÀ» ÃÔ¿µÇÑ È¯ÀÚ Áß 261¸íÀ» ÃßÃâÇÏ¿© ±× ´ë»óÀ¸·Î ÇÏ¿´´Ù. ½Ã»óÀû ¾È¸ð ÆÐÅÏÀº Class I, II, III·Î ºÐ·ùÇÏ¿´°í, ¼öÁ÷Àû ¾È¸ð ÆÐÅÏÀº hypodivergent, normodivergent, hyperdivergent·Î ³ª´©¾î ȯÀÚ¸¦ 9°¡Áö Áý´ÜÀ¸·Î ºÐ·ùÇÏ¿´´Ù. °¢°¢ÀÇ È¯ÀÚ¸¦ °¡»óÀû ½Ã¹Ä·¹ÀÌ¼Ç ÇÁ·Î±×·¥À» ÀÌ¿ëÇÏ¿© ÇÏ¾Ç ÁßÀýÄ¡ ±âÁØ 2 mm ¼öÁ÷ ±³ÇÕ °í°æÀ» Áõ°¡½ÃŲ ÈÄ ¿¬Á¶Á÷ PogonionÀÇ ÈĹæ À̵¿·®, ¿¬Á¶Á÷ MentonÀÇ ÇϹæ À̵¿·®À» ÃøÁ¤ÇÑ ÈÄ ¿¬Á¶Á÷ PogonionÀÇ ÈĹæ À̵¿·®/¿¬Á¶Á÷ MentonÀÇ ÇϹæ À̵¿·®ÀÇ ºñÀ²À» ±¸ÇÏ¿© 9°¡Áö Áý´Üº°·Î ¾î¶² Â÷ÀÌ°¡ ÀÖ´Â Áö ¼­·Î ºñ±³ÇÏ¿´´Ù. ºñ±³ºÐ¼®Àº 2-way ANOVA·Î °ËÁ¤ÇÏ°í »çÈÄ ºÐ¼®Àº Tukey test¸¦ ÀÌ¿ëÇÏ¿´´Ù. ¸ðµç °ËÁ¤Àº À¯ÀǼöÁØ 5%¿¡¼­ ¼öÇàµÇ¾ú´Ù.

°á°ú: ¿¬Á¶Á÷ PogonionÀÇ ÈĹæ À̵¿·®Àº Class I, II, III °£ÀÇ ºñ±³¿¡¼­´Â Class III Áý´Ü¿¡¼­, hypodivergent, normodivergent, hyperdivergent °£ÀÇ ºñ±³¿¡¼­´Â ¸ðµç Áý´Ü¿¡¼­ Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸¿´´Ù(P<.05). ¿¬Á¶Á÷ MentonÀÇ ÇϹæ À̵¿·®Àº Class I, II, III ¹× hypodivergent, normodivergent, hyperdivergent Áý´Ü¿¡¼­ ¸ðµÎ Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸¿´´Ù(P<.05). ¿¬Á¶Á÷ PogonionÀÇ ÈĹæ À̵¿·® ´ë ¿¬Á¶Á÷ MentonÀÇ ÇϹæ À̵¿·® ºñÀ²Àº Class I, II, III ¹× hypodivergent, normodivergent, hyperdivergent Áý´Ü¿¡¼­ ¸ðµÎ Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸¿´À¸¸ç(P<.05) 9°¡Áö Áý´Ü Áß Class II & hyperdivergent Áý´Ü¿¡¼­ °¡Àå Å©°Ô ³ªÅ¸³µ´Ù.

°á·Ð: ¼öÁ÷ ±³ÇÕ °í°æÀÇ Áõ°¡ ½Ã ½Ã»óÀû ¾È¸ðÀÇ ÆÐÅÏ ¹× ¼öÁ÷Àû ¾È¸ðÀÇ ÆÐÅÏ¿¡ µû¶ó ÇϾȸðÀÇ º¯È­´Â À¯ÀÇÇÑ Â÷ÀÌ°¡ ÀÖ¾úÀ¸¸ç, Class II & hyperdivergent ¾ó±¼ ÆÐÅÏÀ» °¡Áø ȯÀÚ´Â ¼öÁ÷ ±³ÇÕ °í°æ Áõ°¡°¡ µ¿¹ÝµÇ´Â Ä¡·á ½Ã ´Ù¸¥ À¯Çü¿¡ ºñÇØ ÇϾȸðÀÇ º¯À§·®ÀÌ Å¬ ¼ö ÀÖ´Ù.

PURPOSE: The aim of this study was to evaluate the effect of increased vertical dimension of occlusion on lower facial changes by facial type.

MATERIALS AND METHODS: Lateral cephalograms from 261 patients were obtained and classified by sagittal (Class I, II, and III) and vertical (hypodivergent, normodivergent, and hyperdivergent) facial patterns. Retrusive displacement of soft tissue Pogonion and downward displacement of soft tissue Menton were measured in each group after 2 mm of vertical dimension of occlusion was increased at the lower central incisor using a virtual simulation program. The ratio of both displacements was calculated in all groups. The statistical analysis was done by 2-way ANOVA and Post hoc was done by Tukey test (5% level of significance).

RESULTS: Retrusive displacement of soft tissue Pogonion in Class III group was statistically different compared to Class I and II, and in vertical facial groups all 3 groups were significantly different (P<.05). Downward displacement of soft tissue Menton showed statistically significant difference between all sagittal groups and vertical groups (P<.05). The ratio of both displacements showed statistically significant difference in all sagittal groups and vertical groups (P<.05), and Class II hyperdivergent group had the highest value.

CONCLUSION: Lower facial change was statically significant according to the facial type when vertical dimension of occlusion increased. Class II hyperdivergent facial type showed the highest ratio after increase in vertical dimension of occlusion.

Å°¿öµå

¼öÁ÷ ±³ÇÕ °í°æ; ¼öÁ÷ °í°æ
Vertical dimension; Vertical dimension of occlusion

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KCI
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