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RADIOPAQUE ZONES IN THE DENTIN BENEATH AMALGAM RESTORATIONS

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Abstract

1. ¼­¿ïÄ¡´ëºÎ¼Óº´¿ø Áø´Ü°ú¿¡ º¸°üµÈ º´·ÏºÎ¸¦ ´ë»óÀ¸·Î Á¶»çÇØ º» °á°ú ¾Æ¸»°¨Ã³Ä¡°¡
µÈ Áö 2³â ÀÌ»ó Áö³­ Ä¡¾Æ 1150¿¹ Áß¿¡¼­ 4.1%ÀÇ Ä¡¾Æ°¡ ¹æ»ç¼±ºÒÅõ°úÃþÀ» °¡Áö°í ÀÖ¾ú´Ù.
2. ºÒÅõ°úÃþÀ» °¡Áø Ä¡¾ÆÁß¿¡¼­ ¼öº¹¹°°ú ºÒÅõ°úÃþ »çÀÌ¿¡ radiolucent area°¡ ÀÖ´Â Ä¡¾Æ
´Â 38.3%¿´´Ù.
3. cement base°¡ ¼öº¹¹°°ú »ó¾ÆÁúÀ» Â÷´ÜÇÏ°í Àִµ¥µµ ºÒÅõ°úÃþÀÌ ¹ß»ýÇÑ °æ¿ì´Â
36.2%¿´´Ù.
4. »ó¾Ç¿¡¼­º¸´Ù ÇϾǿ¡¼­ ´õ ºÒÅõ°úÃþÀ» ¸¹ÀÌ º¼ ¼ö ÀÖ¾ú´Ù.
5. ºÒÅõ°úÃþÀ» °¡Áø Ä¡¾Æ Áß¿¡¼­ Ä¡±Ù´Üº´¼Ò¸¦ °¡Áø Ä¡¾Æ´Â Çϳªµµ ¾ø¾ú´Ù.
6. ¾Æ¸»°¨Ã³Ä¡°¡ µÈ Áö 2³â ÀÌ»ó Áö³­ Ä¡¾Æ 50¿¹¸¦ ´ë»óÀ¸·Î Á÷Á¢ ÃÔ¿µÇØ º» °á°ú ºÒÅõ°ú
ÃþÀÇ ¹ß»ýÀ²Àº 6%¿´´Ù.

The purpose of the present investigation is to determine how frequently radiopaque
zones are seen on standard intraoral films and to research some other things about
radiopaque zones. This study obtained the following results :
1. According to the standard intraoral films of the charts that were kept at the Dept.
of Oral Diagnosis in Seoul National University Hospital, radiopaque zones were found in
the rate of 4.1% among 1150 cases of amalgam-restored teeth that were treated at least
two years ago.
2. Out of teeth that possessed radiopaque zones, 38.3% had radiolucent area between
amalgam restoration and radiopaque zone.
3. Out of teeth that possessed radiopaque zones, 36.2% had cement base between
amalgam restoration and radiopaque zone.
4. Out of teeth that possessed radiopaque zones, no tooth had periapical radiolucency.
5. Radiopaque zones were found more frequently in the mandibular teeth than the
maxillary teeth.
6. According to the result of direct x-ray taking of 50 teeth that were treated at least
2 years ago, 6% had radiopaque zone.

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