RISS 검색 - 국내학술지논문 상세보기

다국어 초록 (Multilingual Abstract)

Introduction: The planning of implant surgery is an important factor for the implant prosthesis. Stereolithographic (SLA) surgical stents based on a computer simulation are quite helpful for clinicians to perform the surgery as planned. Although many clinical and technical trials have been performed for computed tomography (CT)-guided implant stents to improve the surgical procedures and prosthetic treatment, there are still many problems
to solve. We developed a system of a surgical guide based on 3 dimensional (3D) CT for implant therapy and achieved satisfactory results in the terms of planning and operation.
Materials and Methods: Fifteen patients were selected and 30 implant fixtures were installed. The preoperative CT data for surgical planning were prepared after obtaining informed consent. Surgical planning was performed using the simulation program, Ondemend3D In2Guide. The stents were fabricated based on the simulation data containing information of the residual bone, the location of the nerve, and the expected design of the prostheses.
After surgery with these customized stents, the accuracy and reproducibility of implant surgery were evaluated based on the computer simulation.
The data of postoperative CT were used to confirm this system using the image fusion technique and compare the implant fixtures between the planned and implanted.
Results: The mean error was 1.18 (±0.73) mm at the occlusal center, 1.23 (±0.67) mm at the apical center, and the axis error between the two fixtures was 3.25(±3.00). These stents showed superior accuracy in maxilla cases. The lateral side error at the apical center was significantly different from the error at the occlusal center but there were no significant differences between the premolars, 1st molars and 2nd molars.
Conclusion: SLA surgical stents based on a computer simulation have the satisfactory accuracy and are expected to be useful for accurate planning and surgery if some errors can be improved.

참고문헌 (Reference)

1 Bianchi SD, "The use of replicate resin models in the treatment of maxillary sinus augmentation patients" 17 : 348-357, 1997

2 Sarment DP, "Stereolithographic surgical templates for placement of dental implants in complex cases" 23 : 287-295, 2003

3 Jacobs R, "Predictability of reformatted computed tomography for pre-operative planning of endosseous implants" 28 : 37-41, 1999

4 Jacobs R, "Predictability of a three-dimensional planning system for oral implant surgery" 28 : 105-111, 1999

5 Runte C, "Optical data acquisition for computer-assisted design of facial prostheses" 15 : 129-132, 2002

6 Kramer FJ, "Navigated vs. conventional implant insertion for maxillary single tooth replacement" 16 : 60-68, 2005

7 Vrielinck L, "Imagebased planning and clinical validation of zygoma and pterygoid implant placement in patients with severe bone atrophy using customized drill guides. Preliminary results from a prospective clinical follow-up study" 32 : 7-14, 2003

8 Stoler A, "Helical CT scanning for CAD/CAM subperiosteal implant construction" 22 : 247-257, 1996

9 Heissler E, "Custom-made cast titanium implants produced with CAD/CAM for the reconstruction of cranium defects" 27 : 334-338, 1998

10 Verstreken K, "Computer-assisted planning of oral implant surgery: a three-dimensional approach" 11 : 806-810, 1996