To provide a noninvasive method to evaluate the cured degree around prostheses or the like hidden in tissues without requiring a lot of measurement with which a patient receives inaccurate judgements of a dentist.
An image pickup radiation source, which irradiates a region of bones or tissues around the protheses or implants, is used in the noninvasive method to evaluate the cured degree around the protheses or the implants which are hidden in the tissues. The method has the following steps. First and second images, which are photographed at different times and show the bones or the tissues, are acquired. A reference point, which discriminates the similar image position in the first and second images, is decided. The first and second images are positioned by using the reference point. The first and second images, which are positioned, are generated. The cured degree around the protheses or the implants is measured by using the positioned images in order to decide the difference between the first image and the second image with subtractive processing and by using the difference between the first image and the second image in order to generate the measurement value of the growth of the bones or the tissues with time around the place of the protheses or the implants.
JONES EMILY M
STEPHANY THOMAS M
SQUILLA JOHN R
BOLAND JOHN T
RUSSELL STEVEN T
Shinsuke Onuki
Tadashige Ito