Complex periodontal surgeries can be performed using preoperative planning based on CT or MRI data that permit a 3D reconstruction of the patient bone anatomy. This allows a more accurate assess-ment of the surgical difficulties by the surgeon. The precise placement of dental implants is a crucial step to optimize both prosthetic considerations and functional aspects and the use of physical guiding systems has been recognized as a fundamental tool to control their positions and angulations. The weak point of the pro-cedure relies on the accuracy of transferring CT planning information to the surgical field by means of cus-tom-made stereolithographic guides. This paper concerns the study of an innovative methodology for the monitoring of the loss in the clinical accuracy through the various steps concurring in this transfer. The pro-cedure is based on the integration of an optical scanner, with a structured coded light approach, within the CT scan based preoperative planning process. The higher resolution and accuracy, compared to CT scanning sys-tems, has allowed for the use of the optical scanner as a standard to evaluate the precision of CT data and fab-rication processes of the guiding templates. A clinical case if finally presented and discussed.
Guided dental surgery based on integrating 3D image slicing and structured light scanning
BARONE, SANDRO;PAOLI, ALESSANDRO;RAZIONALE, ARMANDO VIVIANO
2010-01-01
Abstract
Complex periodontal surgeries can be performed using preoperative planning based on CT or MRI data that permit a 3D reconstruction of the patient bone anatomy. This allows a more accurate assess-ment of the surgical difficulties by the surgeon. The precise placement of dental implants is a crucial step to optimize both prosthetic considerations and functional aspects and the use of physical guiding systems has been recognized as a fundamental tool to control their positions and angulations. The weak point of the pro-cedure relies on the accuracy of transferring CT planning information to the surgical field by means of cus-tom-made stereolithographic guides. This paper concerns the study of an innovative methodology for the monitoring of the loss in the clinical accuracy through the various steps concurring in this transfer. The pro-cedure is based on the integration of an optical scanner, with a structured coded light approach, within the CT scan based preoperative planning process. The higher resolution and accuracy, compared to CT scanning sys-tems, has allowed for the use of the optical scanner as a standard to evaluate the precision of CT data and fab-rication processes of the guiding templates. A clinical case if finally presented and discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
