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Changes of root lengths and crestal bone hight in nail biting patients

Korean Journal of Orthodontics 1999³â 29±Ç 6È£ p.689 ~ 698
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Abstract

±³Á¤Ä¡·áÀÇ ¸ñÇ¥´Â Ä¡¾Æ¿Í ¾Ç°ñÀÇ ±â´É¼º°ú ½É¹Ì¼ºÀ» ³ôÀÌ¸ç ¾ÈÁ¤¼ºÀ» µµ¸ðÇϴµ¥ ÀÖÁö¸¸
Ä¡·á°úÁ¤ Áß¿¡ Ä¡±ÙÈí¼ö¿Í Ä¡Á¶°ñ Èí¼ö¿Í °°Àº ¿©·¯ °¡Áö ÈÄÀ¯ÁõÀÌ ¹ß»ýÇÒ ¼ö ÀÖ´Ù. ÀÌ·¯ÇÑ
Ä¡±Ù÷ÀÇ Èí¼ö´Â ¿¹ÃøÀÌ ºÒ°¡´ÉÇÏ°í, »ó¾ÆÁú ºÎÀ§±îÁö ÆÄ±ÞµÉ ¼ö ÀÖÀ¸¸ç, ¹ß»ý ÈÄ ºñ°¡¿ªÀû
ÀÌ´Ù. ¿©·¯ °¡Áö ±¸°­¾Ç½À°üÁß ¼ÕÅé ±ú¹°±â ¹ö¸©ÀÇ Ä¡±Ù°ú Ä¡ÁÖÁ¶Á÷¿¡ ´ëÇÑ ¿µÇâÀ» Æò°¡ÇÏ
¿© ±³Á¤ Ä¡·á½Ã ÀûÀýÇÑ »ý¿ªÇÐÀ» °í·ÁÇÏ°í, ±³Á¤Ä¡·áµ¿¾È ÀáÀçÀûÀ¸·Î Ä¡±ÙÈí¼ö¿Í Ä¡Á¶°ñ »ó
½ÇÀÇ °¡´É¼º¿¡ ´ëóÇϸç, »çÀü¿¡ ¹ýÀûÀÎ ¹®Á¦¿¡ ½ÅÁßÀ» ±âÇÒ ¼ö ÀÖÀ» °ÍÀÌ´Ù.
¿¬±¸´ë»óÀº 10¡­15¼¼ÀÇ ³²³à ȯÀÚ¸¦ ¹®ÁøÀ» ÅëÇؼ­ ÆÄ¾ÇµÈ ¼ÕÅé ±ú¹°±â ¹ö¸©À» °¡Áø 63¸í
½ÇÇ豺À¸·Î ÇÏ¿´°í, °°Àº ¿¬·É´ëÀÇ ¼ÕÅé ±ú¹°±â ¹ö¸©ÀÌ ¾ø´Â ±ºÀ» ´ëÁ¶±ºÀ¸·Î ¼³Á¤ÇÏ¿´´Ù.
À̵éÀº ½ÇÇ豺¿¡¼­ °¢°¢ ³²ÀÚ 30¸í, ¿©ÀÚ 33¸íÀ̾ú°í, ´ëÁ¶±º¿¡¼­´Â ³²ÀÚ 31¸í, ¿©ÀÚ 32¸íÀÌ
¾úÀ¸¸ç ´ÙÀ½°ú °°Àº ¿¬±¸ °á°ú¸¦ ¾ò¾ú´Ù.
1. ½ÇÇ豺°ú ´ëÁ¶±ºÀº °¢°¢ 63¸íÀ» ´ë»óÀ¸·Î ÇÏ¿´À¸¸ç ³², ¿© ºñÀ²Àº 1:1 À̾ú°í, Ä¡±ÙÈí¼ö¿¡
À־ Åë°èÇÐÀûÀ¸·Î ³², ¿©°£ÀÇ À¯ÀǼº Â÷ÀÌ´Â º¸ÀÌÁö ¾Ê¾Ò´Ù.
2. Ä¡°üÀÇ ±æÀ̸¦ ºñ±³ÇÒ ¶§ ½ÇÇ豺°ú ´ëÁ¶±º¿¡¼­ À¯ÀǼº ÀÖ´Â Â÷À̸¦ º¸ÀÌÁö ¾Ê¾ÒÀ¸³ª, Ä¡
±ÙÀÇ ±æÀÌ´Â ½ÇÇ豺¿¡¼­ »óÇÏ¾Ç ¾çÃø ÁßÀýÄ¡¿Í ÇÏ¾Ç ¿ìÃø ÃøÀýÄ¡¿¡¼­ »ó´ëÀûÀ¸·Î ´õ ªÀº
°ªÀ» º¸¿´´Ù. (p<0.001)
3. ½ÇÇ豺ÀÇ Ä¡±Ù´Ü ¹æ»ç¼± »çÁø»ó¿¡¼­ Ä¡°ü ´ë Ä¡±Ù Æò±Õ ±æÀÌÀÇ ºñ¿¡¼­ »ó.ÇÏ¾Ç ¾çÃø ÁßÀý
Ä¡¿Í ÇÏ¾Ç ¾çÃø ÃøÀýÄ¡¿¡¼­ À¯ÀǼºÀÖ´Â Å« °ªÀ» º¸¿´´Ù. (p<0.01)
4. Cemento-Enamel Junction¿¡¼­ alveolar crest bone±îÁöÀÇ °Å¸® ÃøÁ¤¿¡ ÀÇÇÑ Ä¡Á¶°ñ »ó½Ç
·®ÀÇ ºñ±³ Æò°¡ÇÑ °æ¿ì ½ÇÇ豺¿¡¼­ »ó, ÇÏ¾Ç ÁÂ, ¿ìÃø ÁßÀýÄ¡ÀÇ ±Ù½É¸é°ú »ó¾Ç ¿ìÃø ÁßÀýÄ¡
ÀÇ ¿ø½É¸é¿¡¼­ ´ëÁ¶±ºº¸´Ù À¯ÀǼº ÀÖ°Ô crestal boneÀÇ »ó½ÇÀ» º¸¿´´Ù. (p<0.05)
#ÃÊ·Ï#
Although the purpose of orthodontic treatment id to increase the function and
aesthetics of the jaws as well as to increase stability, there are side effects from the
treatment itself such as root resorption and alveolar bon resorption. Such resorption of
the apical root is unpredictable and may even proceed into the dentin layer. Once the
process has begun, it is irreversible. By evaluation the effects of different oral habits,
especially that of nail biting, and their correlation with the root and the periodontal
tissues, the appropriate biomechanics for orthodontic treatment can be taken into
consideration. The possibility of root resorption and alveolar bone loss during orthodontic
treatment can also be considered. Also, any legal problems that might occur may be
pondered as well.
Among the male and female patients of the ages 10¡­15, 63 were chosen as the test
group with known nail biting habits at time of examination and within the same age
range those without nail biting habits as the control group. The test group was
composed of 30 males and 33 females. The control group had 31 males and 32 females.
The result from this study were as follows :
1. Of the 63 patients of both the test and control groups, the male-to-female-ratio was
1:1, and had no statistically significant difference in male and female root resorption.
2. In comparing crown length of the test and control groups, no significant difference
existed, but in root lenght, maxillary and mandibular right and left central incisors and
mandibular right lateral incisors had a smaller value.(p<0.001)
3. Average crown-to-root ratio of the test group on the periapical view show a
noticeably high value for the maxillary and mandibular right and left central incisors
and mandibular right and left lateral incisors.(p<0.01)
4. In comparing and evaluating the alveolar bone loss measured from the
cemento-enamel junction to the alveolar bone crest, mesial surfaces of the maxillary and
mandibular right and left central incisors and distal surface of maxillary right central
incisor of the test group showed greater loss of crestal bone than the control.(p<0.05)

Å°¿öµå

¼ÕÅé±ú¹°±â½À°ü; Ä¡±ÙÈí¼ö; Ä¡Á¶°ñ »ó½Ç; Crown/root ratio; Nail biting habits; Root resorption; Alveolar bone loss; Crown/root ratio;

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