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ROC Analysis of Acid Demineralized Artificial Caries

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Abstract

Á¶Á÷ÇÐÀûÀ¸·Î À¯¿ë¼ºÀÌ ÀÔÁõµÈ »êŻȸ¹ýÀ» ÀÌ¿ëÇÑ ÀÎÁ¢¸é ºñ±³Àû Ãʱâ Ä¡¾Æ ¿ì½ÄÀÇ º´¼Ò
¸¦ Çü¼ºÇÏ¿© Áø´ÜÀ²À» Á¶»çÇÏ¿´´Ù.
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¾Æ¿ì½ÄÀ» 30°³ ´ë±¸Ä¡¿¡ Çü¼ºÇÏ¿´´Ù. °ÇÀüÇÑ ¼Ò±¸Ä¡ 20°³, ´ë±¸Ä¡ 30°³¸¦ Æ÷ÇÔÇÏ¿© ÃÑ 96°³
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ÀÍÃÔ¿µÀ» ÇÏ¿´´Ù. ÃÔ¿µ °á°ú¸¦ 36¸íÀÇ Ä¡°úÀÇ»çµéÀÌÀÎÁ¢¸é Ä¡¾Æ¿ì½ÄÀÇ À¯¹«¸¦ ±â·ÏÇÏ°í, µ¿
½Ã¿¡ ¹× ROC ºÐ¼®À» À§ÇÑ 5°³ ¹üÁÖÀÇ Æǵ¶ ±âÁØÀ¸·Î Æǵ¶ÇÏ¿© ±â·ÏÇÏ¿´´Ù.
ÀÎÁ¢¸é Ä¡¾Æ¿ì½ÄÁõ À¯,¹« ¸¸À¸·Î Æǵ¶ÇÑ °á°ú Áø´ÜÀÇ sensitivity´Â 0.71, specificity´Â 0.78
ÀÌ¿´´Ù. ROC ºÐ¼®ÇÑ °á°úÀÇ °î¼±µµÇ¥ ¾Æ·¡ºÎºÐÀÇ Æò±Õ ¸éÀûÀº ¾à 0.806 ÀÌ¿´´Ù. Ä¡¾Æ¿ì½ÄÁõ
À¯¹«¸¸À¸·Î Áø´ÜÇÑ °á°ú´Â ƯÁ¤ÇÑ sensitivity¿Í specificity ¸¸À» ³ªÅ¸³»Áö¸¸, ROC ºÐ¼® °á
°ú´Â ÁÖ°üÀû Áø´Ü ±âÁØ°ú ±¸º°µÇ´Â °íÀ¯ÀÇ Áø´Ü ´É·ÂÀ» Ç¥½ÃÇÏ´Â 1-specificity(False
Positive)ÀÇ º¯È­¿¡ µû¸¥ sensitivity(True Positive)ÀÇ º¯È­¸¦ ¿¬¼ÓÀûÀ¸·Î ³ªÅ¸³»¾î ÁÖ¾ú´Ù.
#ÃÊ·Ï#
Caries is not a conquered disease, but one whose incidence and progression rates have
diminished in western countries. Although 50% of 5-year-olds may be caries free, at
age 16 this has dropped to only 20%, indicating that either caries still has a high
prevalence in the population or that dentists find the diagnostic process difficult.
In North America, explorers are routinely used to diagnose caries in fissures or at
interproximal regions, but often provide false positive due to Invalid nature of the test
which detects unction of caries. The stick of explorers applied in a standardized manner
to discoloured but non-cavitated fissures were histologically validated. Only 24% of
carious fissures detected, but few false positive occurred, therefore explorers are
unreliable diagnostic aids In addition, explorers convert precavitated lesions to frank
cavity, yet many dental schools still teach reliance to this technique.
Radiography is useful for the detection of dental caries because the carious process
causes tooth demineralization. Intraoral radiography can reveal carious lesions that
otherwise might go undetected during a thorough clinical examination. Radiography is
still the best caries diagnostic technique which is widely available to dentists.
No agreement on test models exist with some researchers drilling holes in teeth to
represent caries which is a poor mode. The various caries models have been utilized to
study diagnostic perfomances, but histologically validated caries-like lesions can be
produced using a well-established acid-gel technique.
The ROC analysis to assess the diagnositc assuracy in caries detection, which
producing estimates of sensitivities for all specificities, yielded more comprehensive for
all specificities, yielded more comprehensive measures of diagnostic performance than
single values for sensitivity and specificity.
The aims of this study is to determined the artificial incipient proximal caries lesion
deterctability by dentists on Extaspeed Plus film using ROC analysis

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