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Comparison of longitudinal treatment effects with facemask and chincup therapy followed by fixed orthodontic treatment on Class III malocclusion

Korean Journal of Orthodontics 2009³â 39±Ç 6È£ p.362 ~ 371
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À̳²±â ( Lee Nam-Ki ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°ú±³Á¤Çб³½Ç
¹é½ÂÇР( Baek Seung-Hak ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±³Á¤Çб³½Ç

Abstract

º» ¿¬±¸´Â »ó¾ÇÀü¹æ°ßÀÎÀåÄ¡ ¶Ç´Â À̸ðÀåÄ¡ Ä¡·á ÈÄ °íÁ¤½Ä ±³Á¤ÀåÄ¡·Î Ä¡·á ¹ÞÀº III±Þ ºÎÁ¤±³ÇÕ È¯ÀÚÀÇ Ä¡·áÈ¿°ú¿¡ ´ëÇÑ Á¾´ÜÀû ºñ±³¸¦ À§ÇØ ½ÃÇàµÇ¾ú´Ù. »ó¾ÇÀü¹æ°ßÀÎ Ä¡·á ¶Ç´Â À̸ðÀåÄ¡ Ä¡·á ÀüÀÇ °ñ°Ý ¹× Ä¡¾Æ À¯ÇüÀÌ À¯»çÇÏ¸ç °íÁ¤½Ä ±³Á¤Ä¡·á ÈÄ ÁÁÀº À¯Áö°á°ú(I±Þ ±¸Ä¡/°ßÄ¡ °ü°è ¹× ¾çÀÇ ¼öÁ÷/¼öÆòÇÇ°³)¸¦ º¸ÀÌ´Â 21¸íÀÇ È¯ÀÚ(1±º, »ó¾ÇÀü¹æ°ßÀÎÀåÄ¡, 11¸í; 2±º, À̸ðÀåÄ¡, 10¸í)¸¦ ´ë»óÀ¸·Î ÇÏ¿´´Ù. »ó¾ÇÀü¹æ°ßÀÎ Ä¡·á ¶Ç´Â À̸ðÀåÄ¡ Ä¡·á Àü(T0)°ú ÈÄ(T1), °íÁ¤½Ä ±³Á¤Ä¡·á ÈÄ À¯Áö±â°£(T2)¿¡ Ãø¸ðµÎºÎ¹æ»ç¼±»çÁøÀ» ÃÔ¿µÇÏ¿© °ñ°Ý ¹× Ä¡¾Æ¿¡ ´ëÇÑ °èÃøÄ¡¸¦ ÀÌ¿ëÇÏ¿´´Ù. Åë°èÀû ºÐ¼®À» À§ÇØ ºñ¸ð¼ö °ËÁ¤¹ý(Mann-Whitney U-test and Wilcoxon signed-rank test)À» ÀÌ¿ëÇÏ¿´´Ù. ¾ÇÁ¤Çü Ä¡·á ½Ã±â(T0-T1)¿¡, 1±º¿¡¼­´Â »ó¾Ç°ñÀÇ Àü¹æ À̵¿ (point A, p £¼ 0.05), »ó¾Ç ÀüÄ¡ÀÇ ¼øÃø°æ»ç (p £¼ 0.01) ¹× ¼öÆòÇÇ°³ÀÇ Áõ°¡ (p £¼ 0.01)°¡ º¸¿´´Ù. ÇϾǰñÀº 1±º°ú 2±º ¸ðµÎ¿¡¼­ ÈĹæ À§Ä¡¸¦ º¸¿´´Ù (SNB, Pog-N perp, ANB, p £¼ 0.01). 1±º¿¡¼­´Â ¼öÁ÷°í°æÀÇ Áõ°¡ (SN-GoGn, ANS-Me/N-Me, Bjork sum, p £¼ 0.01)°¡ ³ªÅ¸³­ ¹Ý¸é¿¡, 2±º¿¡¼­´Â articular angleÀÇ Áõ°¡ (p £¼ 0.05)¿Í gonial angleÀÇ °¨¼Ò (p £¼ 0.01)°¡ º¸¿´´Ù. °íÁ¤½Ä ±³Á¤Ä¡·á ¹× À¯Áö±â°£(T1-T2)¿¡, 1±º°ú 2±º ¸ðµÎ´Â »ó¾Ç°ñÀÇ Àü¹æ¼ºÀå (point A, p £¼ 0.05)À» º¸¿´´Ù. ÇÑÆí 1±ºÀº ÇϾǰñÀÇ Àü¹æ¼ºÀå (Pog-N perp, p £¼ 0.01) ¹× ¹Ý½Ã°è¹æÇâ ȸÀü (SN- GoGn, Bjork sum, p £¼ 0.05)°ú ÇÏ¾Ç ÀüÄ¡ÀÇ ¼øÃø°æ»ç (IMPA, p £¼ 0.05)¸¦ ³ªÅ¸³ÂÀ¸¸ç, 2±ºÀº ANS-Me/ N-MeÀÇ Áõ°¡ (p £¼ 0.01)¿Í ¼öÁ÷ÇÇ°³ÀÇ °¨¼Ò (p £¼ 0.05)¸¦ º¸¿´´Ù. ºñ·Ï »ó¾ÇÀü¹æ°ßÀÎ Ä¡·á¿Í À̸ðÀåÄ¡ Ä¡·áÀÇ °ñ°Ý ¹× Ä¡¼ºÀû È¿°ú°¡ ¼­·Î Â÷ÀÌ°¡ ÀÖÀ»Áö¶óµµ, ÀÌ µÎ Ä¡·á¹ýÀ¸·Î ÀÎÇÑ °á°ú°¡ Àå±â°£ ¾ÈÁ¤ÀûÀ¸·Î À¯ÁöµÇ±â À§Çؼ­ ÇϾǰñÀÇ È¸Àü ¹× ¼ºÀå¿¡ ¸ÂÃß¾î »ó¾Ç°ñÀÇ Áö¼ÓÀûÀÎ Àü¹æ¼ºÀåÀÌ ÇÊ¿äÇÑ °ÍÀ¸·Î »ý°¢µÈ´Ù.

Objective: The purpose of this study was to compare the longitudinal treatment effects of facemask with rapid maxillary expansion (FM/RME) and chincup (CC) therapy followed by fixed orthodontic treatment (FOT) in Class III malocclusion (CIII) patients.

Methods: The samples consisted of twenty-one CIII patients who had similar skeletal and dental characteristics before FM/RME or CC therapy and good retention results (Class I molar/canine relationship and positive overbite/overjet) after FOT (Group 1, FM/RME, n = 11; Group 2, CC, n = 10). Lateral cephalograms were taken before (T0) and after FM/RME or CC therapy (T1), and after FOT and retention (T2). Skeletal and dental variables were measured. Mann-Whitney U-test and Wilcoxon signed-rank test were used for statistical analysis.

Results: During T0-T1, FM/RME therapy induced forward movement of point A, and labioversion of the upper incisors. Both groups showed posterior repositioning of the mandible. FM/RME resulted in increase of the vertical dimension; however, CC caused an increase in articular angle and decrease in gonial angle. During T1-T2, both groups exhibited forward growth of point A. Group 1 showed forward growth and counterclockwise rotation of the mandible and increase of IMPA; however, Group 2, showed increase of ANS-Me/N-Me and decrease of overbite.

Conclusions: The key factor for successful FM/RME and CC therapy and good retention results might be a harmonized forward growth of the maxilla that could keep pace with the growth and rotation of the mandible.

Å°¿öµå

III±Þ ºÎÁ¤±³ÇÕ;»ó¾ÇÀü¹æ°ßÀÎÀåÄ¡;À̸ðÀåÄ¡;Á¾´ÜÀû ¿¬±¸
Class III malocclusion; Facemask; Chin cup; Longitudinal evaluation

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