In-vitro study on the accuracy of a simple-design CT-guided stent for dental implants

Huh, Young-June; Choi, Bo-Ram; Huh, Kyung-Hoe; Yi, Won-Jin; Heo, Min-Suk; Lee, Sam-Sun; Choi, Soon-Chul

추천

검색

자료유형: 학술저널

저자정보: Huh, Young-June (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University) Choi, Bo-Ram (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University) Huh, Kyung-Hoe (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University) Yi, Won-Jin (Department of Oral and Maxillofacial Radiology, Dental Research Institute and BK21 Craniomaxillofacial Life Science, School of Dentistry, Seoul National University) Heo, Min-Suk (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University) Lee, Sam-Sun (Department of Oral and Maxillofacial Radiology, Dental Research Institute and BK21 Craniomaxillofacial Life Science, School of Dentistry, Seoul National University) Choi, Soon-Chul (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University)

저널정보: 대한영상치의학회 Imaging science in dentistry Imaging science in dentistry 제42권 제3호

발행연도: 2012.1

수록면: 139 - 146 (8page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

Purpose: An individual surgical stent fabricated from computed tomography (CT) data, called a CT-guided stent, would be useful for accurate installation of implants. The purpose of the present study was to introduce a newly developed CT-guided stent with a simple design and evaluate the accuracy of the stent placement. Materials and Methods: A resin template was fabricated from a hog mandible and a specially designed plastic plate, with 4 metal balls inserted in it for radiographic recognition, was attached to the occlusal surface of the template. With the surgical stent applied, CT images were taken, and virtual implants were placed using software. The spatial positions of the virtually positioned implants were acquired and implant guiding holes were drilled into the surgical stent using a specially designed 5-axis drilling machine. The surgical stent was placed on the mandible and CT images were taken again. The discrepancy between the central axis of the drilled holes on the second CT images and the virtually installed implants on the first CT images was evaluated. Results: The deviation of the entry point and angulation of the central axis in the reference plane were $0.47{\pm}0.27$ mm, $0.57{\pm}0.23$ mm, and $0.64{\pm}0.16^{\circ}$, $0.57{\pm}0.15^{\circ}$, respectively. However, for the two different angulations in each group, the $20^{\circ}$ angulation showed a greater error in the deviation of the entry point than did the $10^{\circ}$ angulation. Conclusion: The CT-guided template proposed in this study was highly accurate. It could replace existing implant guide systems to reduce costs and effort.

#Computer-Assisted Diagnosis #Dental Implant #Tomography, X-Ray Computed #In Vitro

참고문헌 (26)

참고문헌 신청

Branemark PI / 1969 / Intra-osseous anchorage of dental prostheses. I. Experimental studies / Scand J Plast Reconstr Surg 3:81~100

Israelson H / 1992 / Barium-coated surgical stents and computer-assisted tomography in the preoperative assessment of dental implant patients / Int J Periodontics Restorative Dent 12:52~61

Espinosa Marino J / 1995 / Fabrication of an implant radiologic-surgical stent for the partially edentulous patient / Quintessence Int 26:111~114

Basten CH / 1995 / The use of radiopaque templates for predictable implant placement / Quintessence Int 26:609~612

Borrow JW / 1996 / Stent marker materials for computerized tomograph-assisted implant planning / Int J Periodontics Restorative Dent 16:60~67