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The Accuracy of the Radiographic Method in Root Canal Length Measurement

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Abstract

ÃÖ±Ù¿¡ ¿¬±¸°¡ È°¹ßÈ÷ ÁøÇàµÇ°í ÀÖ´Â DigoraR ½Ã½ºÅÛÀ» ±Ù°üÄ¡·á½ÃÀÇ ±Ù°ü
Àå °áÁ¤ ¿¡ À־ ÀûÇÕ¼ºÀ» È®ÀÎÇÏ°í Ä¡±Ù´Ü ¹æ»ç¼±»çÁø°ú ºñ±³ÇÏ°íÀÚ º» ¿¬±¸¿¡¼­´Â 30°³
ÀÇ ¼Ò±¸Ä¡ÀÇ ±Ù°ü¿¡ 25¹ø fileÀ» À§Ä¡½ÃÄÑ µ¿ÀÏÇÑ Á¶°ÇÇÏ¿¡¼­ ÃÔ¿µÇÑ DigoraR
½Ã½ºÅÛ°ú Ä¡±Ù´Ü ¹æ»ç¼±»çÁø»ó¿¡¼­ÀÇ file tip¿¡¼­ Ä¡±Ù´Ü±îÁöÀÇ °Å¸®¸¦ 3ÀÎÀÇ °üÂûÀÚ°¡ Ãø
Á¤ÇÏ¿© ºñ±³ ºÐ¼®ÇÏ¿´´Ù. ¶ÇÇÑ µî°¢ÃÔ¿µ¹ý°ú ÆòÇàÃÔ¿µ¹ýÀ¸·Î ÃÔ¿µµÈ DigoraR
½Ã½ºÅÛ°ú Ä¡±Ù´Ü ¹æ»ç¼±»çÁø¿¡¼­µµ µ¿ÀÏÇÑ °Å¸®¸¦ ÃøÁ¤ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. µî°¢ÃÔ¿µ¹ý¿¡¼­ DigoraR ½Ã½ºÅÛ°ú Ä¡±Ù´Ü ¹æ»ç¼±»çÁøÀÇ ÃøÁ¤Ä¡°£ÀÇ Æò±Õ
¿ÀÂ÷´Â 0.002 §®, Ç¥ÁØ ÆíÂ÷´Â 0.341 §®·Î Åë°èÇÐÀûÀÎ À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú°í(p>0.05), ¶ÇÇÑ
ÆòÇàÃÔ¿µ¹ý¿¡¼­µµ DigoraR ½Ã½ºÅÛ°ú Ä¡±Ù´Ü ¹æ»ç¼±»çÁøÀÇ ÃøÁ¤Ä¡°£ÀÇ Æò±Õ
¿ÀÂ÷´Â 0.007 §®, Ç¥ÁØ ÆíÂ÷´Â 0.323 §®·Î Åë°èÇÐÀûÀÎ À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù(p>0.05).
2. DigoraR ½Ã½ºÅÛ¿¡¼­ µî°¢ÃÔ¿µ¹ý°ú ÆòÇàÃÔ¿µ ¹ý°£ÀÇ Æò±Õ ¿ÀÂ÷´Â -0.336
§®, Ç¥ÁØ ÆíÂ÷´Â 0.472 §®·Î Åë°èÇÐÀûÀÎ À¯ÀÇÇÑ Â÷ÀÌ°¡ ÀÖ¾ú°í (p<0.05), Ä¡±Ù´Ü ¹æ»ç¼±»çÁø
¿¡¼­µµ µî°¢ÃÔ¿µ¹ý°ú ÆòÇàÃÔ¿µ¹ý°£ÀÇ Æò±Õ ¿ÀÂ÷´Â 0.328 §®, Ç¥ÁØ ÆíÂ÷´Â 0.517 §®·Î Åë°èÇÐ
ÀûÀÎ À¯ÀÇÇÑ Â÷ÀÌ°¡ ÀÖ¾ú´Ù(p<0.05).
3. DigoraR ½Ã½ºÅÛ°ú Ä¡±Ù´Ü ¹æ»ç¼±»çÁø¿¡¼­ µî °¢ÃÔ¿µ¹ýÀ¸·Î ½ÃÇàÇÑ ÃøÁ¤
Ä¡¿Í ½ÇÃøÁ¤Ä¡°£¿¡´Â Åë°èÇÐÀûÀÎ À¯ÀÇ ÇÑ Â÷ÀÌ°¡ ÀÖ¾ú°í (p<0.05), ÆòÇàÃÔ¿µ¹ýÀÇ ÃøÁ¤Ä¡¿Í
½ÇÃøÁ¤Ä¡°£¿¡´Â Åë°èÇÐÀûÀÎ À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù (p>0.05).
°á·ÐÀûÀ¸·Î,°¢ ÃÔ¿µ¹ý ¸ðµÎ¿¡¼­ DigoraR ½Ã½ºÅÛ°ú ÀÏ¹Ý Ä¡±Ù´Ü ¹æ»ç¼±»çÁø
ÀÇ ÃøÁ¤Ä¡°£¿¡ Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÑ Â÷°¡ ¾ø¾î DigoraR ½Ã½ºÅÛÀº ±Ù°üÄ¡·á½Ã
ÀÇ ±Ù°üÀå °áÁ¤¿¡ À־ Ä¡±Ù´Ü ¹æ»ç¼±»çÁø¸¸Å­ ¿ì¼öÇÑ »óÀ» ¾òÀ» ¼ö ÀÖ¾ú°í,
DigoraR ½Ã½ºÅÛ°ú Ä¡±Ù´Ü ¹æ»ç¼±»çÁø¿¡¼­ ÆòÇàÃÔ¿µ¹ýÀ¸·Î ÃÔ¿µµÈ ÃøÁ¤Ä¡´Â
½ÇÃøÁ¤Ä¡¿Í À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾úÀ¸¹Ç·Î µî°¢ÃÔ¿µ¹ýº¸´Ù ÆòÇàÃÔ¿µ¹ýÀ¸·Î ÃÔ¿µ½Ã ½ÇÁ¦ÀÇ ±Ù°ü
Àå¿¡ ±ÙÁ¢ÇÏ¿© ¼º°øÀûÀÎ °á°ú¸¦ ¾òÀ»¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ ±¸³» µðÁöÅ» ¿µ»ó󸮱âÀÇ ÀåÁ¡À¸·Î
³ëÃâ·®ÀÇ °¨¼Ò, Áï°¢ÀûÀÎ »óÀÇ ÀÌ¿ë, »óÀÇ È®´ë ¹× ´ëÁ¶µµ¿Í ¹à±âÀÇ Á¶Àý, »óÀÇ ÀúÀå ´É·ÂÀ»
°í·ÁÇغ¼ ¶§ Ä¡±Ù´Ü ¹æ»ç¼±»çÁø¿¡ ´ëÄ¡µÇ¾î À¯¿ëÇÏ°Ô ¾²ÀÏ ¼ö ÀÖ´Â ¹æ¹ýÀ̶ó°í »ç·áµÇ¾ú´Ù.
#ÃÊ·Ï#
For the successful endodontic treatment, root canal should be cleaned thoroughly by
accurate mechanical and chemical canal preparation and sealed completely with canal
ailing material without damaging the periapical tissues. The accuracy of the root canal
length measurement is a prerequisite for the success of the endodontic treatment, and
the root canal length is often determined by the standard periapical radiographs and
digital tactile sense.
In this study, the accuracy and the clinical usefulness of DigoraR, an
intraoral digital imaging processor and the conventional standard radiographs were
compared by measuring the length from the top of the file to the root apex.
30 single rooted premolars were invested in a uniformly sized blocks and No.25 K-file
was inserted into and fined in each canal. Each block was placed in equal distance and
position to satisfy the principle of the bisecting angle and paralleling techniques and
DigoraR, system's image and standard Periapical radiograph were taken.
Each radiograph was examined by 3 different observers by measuring the length from
top of the file to the root apex and each data was compared and analyzed. The results
were as follows ;
1. In the bisecting angle technique, the average difference between the
DigoraR, system and standard Periapical radiograph was 0.002 §® and the
standard deviasion was 0.341 §® which showed no statistically significant difference
between the two systems(p>0.05). Also, in the paralleling technique, the average
difference between these two system was 0.007 §® and the standard deviation was 0.323
p>0.05).
2. In DigoraR, system, the average difference between the bisecting
angle and paralleling technique was -0.336 §® and the standard deviation was 0.472 §®
which showed a statistically significant difference between the two techniques(p>0.05).
Also, in the standard periapical radiographs, the average difference between the bisecting
anÈ÷e and paralleling technique was 0.336 §® and the standard deviation was 0.517 §®
which showed a statistically significant difference between these two techniques(p<0.05)
.
3. In DigoraR, system and the standard periapical radiographs, there was
a statistically significant difference between the measurement using the bisecting angle
technique and the actual length (p<0.05). But there was no statistically significant
difference between the measurement using the paralleling technique and the actual
length (p>0.05).
In conclusion, the determination of the root canal length by using the
DigoraR, system can give us as good an image as the standard periapical,
radiograph and using the Paralleling technique instead of the bisecting angle technique
can give a measurement closer to the actual canal length, thereby contributing to a
successful result. Also, considering the advantages of the digital imaging processor such
as decreasing the amount of exposure to the patient, immediate use of the image,
magnification of image size, control of the contrast and brightness and the ability of
storing the image can give us good reason to replace the standard periapical
radiographs.

Root canal length measurement; DigoraR system; Standard periapical radiograph; Bisecting angle technique; Paralleling technique; Intraoral digital image system;

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