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Dentoalveolar compensation according to skeletal discrepancy in Normal occlusion

Korean Journal of Orthodontics 2004³â 34±Ç 5È£ p.380 ~ 393
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Abstract

º» ¿¬±¸ÀÇ ¸ñÀûÀº Á¤»ó±³ÇÕÀÚ¿¡¼­ ÀüÈĹæÀû ¾Ç°ñ °ü°è¿¡ µû¶ó Ä¡¾ÆÄ¡Á¶ºÎ º¸»óÀÌ ³ªÅ¸³ª´Â ¾ç»óÀ» ¾Ë¾Æº¸°í, ±³Á¤Ä¡·á¿¡ »ç¿ëµÇ´Â ¿©·¯ °èÃø Ç׸ñ¿¡¼­ À̵éÀÌ ¹Ý¿µµÇ´Â Á¤µµ¸¦ ºÐ¼®Çϱâ À§ÇÑ °ÍÀÌ´Ù. ¾Ç°ñ °ü°è¿¡ ´ëÇÑ Ä¡¾ÆÄ¡Á¶¼º º¸»óÀ» ºÐ¼®Çϱâ À§ÇÏ¿© Á¤»ó ±³ÇÕÀÚ 90¸í(³²ÀÚ 50¸í, ¿©ÀÚ 40¸í)ÀÇ Ãø¸ð µÎºÎ X-¼± »çÁøÀ» °èÃøÇÏ¿© ÀüÈĹæÀû ¾Ç°ñ °ü°è¿¡ µû¶ó °¢°¢ ¼¼ ±ºÀ¸·Î ºÐ·ùÇÏ¿´´Ù. 6°³ÀÇ °ñ°Ý °èÃø Ç׸ñ°ú 19°³ÀÇ Ä¡¾Æ °èÃø Ç׸ñ¿¡ ´ëÇØ independent t-test, »ó°üºÐ¼®°ú ȸ±ÍºÐ¼®À» ½Ç½ÃÇÑ °á°ú, ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
¾Ç°ñ °ü°è¿¡ ´ëÇÑ Ä¡¾ÆÄ¡Á¶ºÎ º¸»óÀ¸·Î ÇϾǰñÀÌ »ó¾Ç°ñ¿¡ ºñÇØ Àü¹æ À§Ä¡ÇÒ¼ö·Ï »ó¾Ç ÀüÄ¡´Â ¼øÃø °æ»çµÇ°í ÇÏ¾Ç ÀüÄ¡´Â ¼³Ãø °æ»çµÇ¸ç ±³ÇÕ Æò¸éÀº °æ»ç°¡ ¿Ï¸¸ÇØÁ³´Ù.
Ä¡¾Æ °èÃø Ç׸ñ Áß L1 to SN°ú L1 to FH¿¡¼­ ÀüÈĹæÀû ¾Ç°ñ °ü°è¿¡ ´ëÇÑ º¸»óÀû º¯È­°¡ °¡Àå À¯ÀǼº ÀÖ°Ô ³ªÅ¸³ª »ó¾Ç ÀüÄ¡º¸´Ù ÇÏ¾Ç ÀüÄ¡°¡ Ä¡¾ÆÄ¡Á¶ºÎ º¸»ó°ú ´õ °ü·ÃÀÌ ÀÖ¾ú´Ù.
Ä¡¾Æ °èÃø Ç׸ñ Áß U1 to PtGn°ú L1 to APogÀº ÀüÈĹæÀû ¾Ç°ñ °ü°è¿Í ¹«°üÇÏ°Ô °ÅÀÇ ÀÏÁ¤ÇÑ °ªÀ» º¸¿´´Ù.

The purpose of this study was to investigate the dentoalveolar compensation according to anteroposterior skeletal discrepancy in normal occlusion and to evaluate cephalometric parameters that quantitatively describe dental compensations.
The study consisted of 90 subjects (50 males, 40 females) who were selected among specimens of normal occlusion at Seoul National University Dental Hospital, Dept. of Orthodontics. Lateral cephalograms in centric occlusion were traced and digitized for each subject. According to the anteroposterior skeletal pattern, the sample was divided into three groups.
Cephalometric data were analyzed for the three groups using the SPSS program. Independent t-test, correlation analysis and regression analysis were carried out.
The results were as follows:
Dentoalveolar compensation was found in upper and lower incisor inclination and occlusal plane inclination. As the mandible located anterior to the maxilla, the maxillary incisors inclined more labially, the mandibular incisors more lingually, and the occlusal plane continued to flatten.
The dental parameters most correlated with anteroposterior skeletal discrepancy were L1 to SN and L1 to FH. Among the compensatory dentoalveolar changes, lower incisor inclination was strongly related to the anteroposterior jaw relationship and played an important role in obtaining a normal incisor relationship.
U1 to PtGn and L1 to APog were constant irrelevant to anteroposterior skeletal discrepancy.

Å°¿öµå

Ä¡¾ÆÄ¡Á¶ºÎ º¸»ó;ÀüÈĹæÀû ¾Ç°ñ °ü°è;»óÇÏ¾Ç ÀüÄ¡;±³ÇÕÆò¸é;Dentoalveolar compensation;Anteroposterior jaw relationship;Upper and lower incisor;Occlusal plane

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