2019 Volume 32 Issue 4 Pages 313-323
Digital dental, panoramic, and CT images may show bone resorption such as pseudo bone defects caused by digital artifacts, making it difficult to evaluate integration.
CBCT images, which enable the three-dimensional structure to be grasped and which seem to be accurate, are not the standard photography, and the implants shrink in all directions of X-ray incidence. Similarly, the distance between multiple implants shrinks and the positional relationship of the implants shifts. As a result, there are problems in accuracy and reproducibility which affect digital dentistry (digital matching, CAD-CAM, simulation). Thus, careful attention is needed for measuring distance, evaluating the dimensional chronological change of bone around the implants, and evaluating osseointegration. On the other hand, by correcting the shrinkage, implant treatment may be possible even in diagnostically unsuitable cases.
Shrinkage and bone resorption in digital images are demonstrated. Examination and diagnosis by considering digital data shrinkage and the clinical problems of CT images in implant treatment are also discussed.
