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RADIOLOGIC STUDY OF THE EXPERIMENTALLY PRODUCED BONE DESTRUCTION AND BONE FORMATION

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Abstract

7¸¶¸®ÀÇ ÀâÁ¾°ßÀ» ½ÇÇè µ¿¹°·Î ÇÏ¿© ÇÏ¾Ç ¿ìÃø Á¦3,4¼Ò±¸Ä¡ Ä¡¼ö°­¿¡ ¾Æºñ»ê È­ÇÕ¹° ¹Ì
·®À» ³Ö¾î Ä¡Á¶°ñ Æı«¸¦ À¯µµÇÏ°í ÇÏ¾Ç ÁÂÃø Á¦3,4 ¼Ò±¸Ä¡ Ä¡±Ù´ÜºÎ¿¡ °ñ°á¼ÕºÎ¸¦ Çü¼ºÇÑ
ÈÄ ÀÏ·ÃÀÇ Ç¥ÁØÈ­µÈ ¹æ»ç¼±»çÁøÀ» ÃÔ¿µÇÏ¿© ÀçÇö¼ºÀ» °ËÁ¤ÇÏ°í °ñÆı« °úÁ¤°ú °ñÇü¼º °úÁ¤
À» À°¾È°ú ³óµµ°è·Î ºÐ¼®ÇÏ¿´´ø ¹Ù ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. °ñÆı« °úÁ¤ÀÇ ºÐ¼®
1) ºÐ¼®¿¡ »ç¿ëµÈ ¹æ»ç¼±»çÁøÀÇ ÃøÁ¤¿ÀÂ÷ÀÇ Ç¥ÁØÆíÂ÷´Â 0.04§®, Àüü¿ÀÂ÷ÀÇ Ç¥ÁØÆíÂ÷´Â
0.06§®, ÀçÇö¼º ¿ÀÂ÷ÀÇ Ç¥ÁØÆíÂ÷´Â 0.05§®¿´´Ù.
2) À°¾ÈÀûÀ¸·Î 6¿¹¿¡¼­ 7ÀÏÈÄ¿¡ °üÂûµÇ¾úÀ¸¸ç 4ÀÏ°ú 10ÀÏÈÄ¿¡ °üÂûµÈ °æ¿ì°¡ °¢°¢ 1¿¹¿´
´Ù.
3) ³óµµ°è·Î ºÐ¼®½Ã aluminum µî°¡Ä¡´Â 2ÀÏÈÄ ºÎÅÍ °¨¼ÒÇϱ⠽ÃÀÛÇÏ¿´À¸³ª ÃÖ¼Ò 0.34§®,
ÃÖ´ë 0.85§®, Æò±Õ 0.58¡¾0.19§® °¨¼ÒÇÏ¿©¾Æ À°¾ÈÀûÀ¸·Î °üÂûÀÌ °¡´ÉÇÏ¿´´Ù.
2. °ñÇü¼º °úÁ¤ÀÇ ºÐ¼®
1) ºÐ¼®¿¡ »ç¿ëµÈ ¹æ»ç¼±»çÁøÀÇ ÃøÁ¤¿ÀÂ÷ÀÇ Ç¥ÁØÆíÂ÷´Â 0.03§®, Àüü¿ÀÂ÷ÀÇ Ç¥ÁØÆíÂ÷´Â
0.04§®, ÀçÇö¼º¿ÀÂ÷ÀÇ Ç¥ÁØÆíÂ÷´Â 0.04§®¿´´Ù.
2) À°¾ÈÀûÀ¸·Î 5¿¹¿¡¼­ 2ÁÖÈÄ¿¡ °üÂûµÇ¾úÀ¸¸ç 2¿¹¼­ 3ÁÖÈÄ¿¡ °üÂûµÇ¾ú´Ù.
3) ³óµµ°è¸¦ »ç¿ë½Ã aluminum µî°¡Ä¡´Â 1ÁÖÈÄ ºÎÅÍ Áõ°¡Çϱ⠽ÃÀÛÇÏ¿´À¸³ª ÃÖ¼Ò 0.23§®,
ÃÖ´ë 0.73§®, Æò±Õ 0.45¡¾0.15§®Áõ°¡ÇÏ¿©¾ß À°¾ÈÀûÀ¸·Î °üÂûÀÌ °¡´ÉÇÏ¿´´Ù.
4) aluminum µî°¡Ä¡´Â ½ÇÇ赿¹°¿¡ µû¶ó 7ÁÖ ³»Áö 9ÁÖ±îÁö °è¼Ó Áõ°¡ÇßÀ¸³ª 10ÁÖ ÀÌÈÄ¿¡
´Â Å« º¯È­°¡ ¾ø¾ú´Ù.
#ÃÊ·Ï#
Bone destruction was induced experimentally by the insertion of a bit of the arsenic
compound into the pulp chambers of the right premolars and the artificial bone defects
were produced in the periapical regions of the left premolars in 7 dogs. The serial stan-
dardized periapical radiographs using aluminum stepwedge attached to the XCP
instruments and resin bite blocks were taken following insertion of arsenic compound
and at 2, 4, 7, 10, 14, 17, 21, 24 and 28 days in case of bone destruction and following
bone injury and weekly thereafter for a total of 14 weeks in case of bone formation.
The errors of the method were determined with error estimators described by the
Duinkerke. All rani-ographs were evaluates by the visual examination after joint
evaluation by three dental radiologists and analysed with densitometer.
The following results were obtained;
1. Analysis of the bone destruction process
1) The error of the method in estimating two distances proved to be small
(S.D. for the measuring error; 0.04§®,
S.D. for the over-all error; 0.06§®,
S.D. for the positioning error; 0.05§®)
2) The radiographic changes were observed after 7 days in 6 cases, 4 days in 1 case
and 10 days in 1 case by the visual examination.
3 ) Aluminum equivalent values were diminished after 2 days and the diminution of
0.58¡¾0.19§® was demanded to be detected by the visual examination.
2. Analysis of the bone formation process
1) The error of the method in estimating two distances proved to be small
(S.D. for the measuring error; 0.03§®,
S.D. for the over-all error; 0.04§®,
S.D. for the positioning error; 0.04§®)
2) The radiographic changes were observed after 2 weeks in 5 cases and 3 weeks in
2cases by the visual examination.
3) Aluminum equivalent values wert increased airier 1 week and the increase of 0.45¡¾
0.15§® was demanded to be detected by the visual examination.
4) Aluminum equivalent values were increased continuously for 7 or 9 weeks but
there was only extremely small change after 10 weeks.

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