[Digital subtraction technique in dentistry].
By computerized subtracting the grey values of geometrically corresponding pixels in consecutively taken digital X-ray images, it is possible to visualize or measure changes in radiodensity over time. This can be very useful, both in clinical and research applications, for the follow-up of tooth mineralization or bone changes. A major problem, however, resides in obtaining a sufficient geometrical standardization of the images. Several techniques have been proposed to this end, most of them still being in development, or too cumbersome to find application in daily routine.
Vakgroep COPR, Tandheelkundig Instituut Vrije Universiteit Brussel, Bruxelles. pbottenb@vub.ac.be
Peter
P
Bottenberg
Bart
B
Truyen
Cristina
C
Boca
D015502:Absorptiometry, Photon / Q000592:standards; D003731:Dental Caries / Q000000981:diagnostic imaging; D015921:Dental Implants; D006801:Humans; D007091:Image Processing, Computer-Assisted; D010510:Periodontal Diseases / Q000000981:diagnostic imaging; D019252:Radiography, Dental, Digital / Q000379:methods*; D015203:Reproducibility of Results; D013382:Subtraction Technique
D015921:Dental Implants