Application of stentcad ötede surgical guide system and evaluation of planned and postoperative implant positions

Preoperative treatment plan can be done on 3 dimensional images of CBCT and virtual implants can be placed on these images. By stereolitography planned implant positions and angulations can be transferred to the surgical site. The aim of this study was the optimization of a new developped surgical guide system StendCad Ötede, and by using this system to place in implants in systemically healthy patients to calculate deviations between planned and placed implants. Our study consists of laboratory and clinical parts. In laboratory part of the study resin models including %10 barium sulphate prepared and scanned with CBCT. CBCT images transferred to the interactive implant treatment planning programme and virtual implant treatment plan was done. Stereolitographic surgical guides produced and 50 implant holes prepared with StentCad Ötede system. Models scanned with laser scanner, CBCT images and 3D images of models superimposed. Angular, coronal, apical and vertical deviations between planned and placed implant positions and angulations were calculated and found 1.5°, 0.24 mm, 0,19mm and 0.04 mm respectively . In clinical part of the study 24 implants placed on 9 systemically healthy patients using StentCad Ötede system. Preoperatively patients scanned with CBCT, these images transferred to the interactive treatment planning programme and implant treatment plans were done. After implant placement postoperative CBCT scan taken from patients, planned and placed implant positions and angulations superimposed. Angular , coronal, apical and vertical deviations were calculated, found 3.09°, 1.45 mm, 1.15 mm and 0.76 mm respectively. According to the results of this study; StendCad Ötede system has many advantages over conventional stereolitographic surgical guides but further studies consisting more implants are needed to evaluate the accuracy of the system.