Journal of Oral Implantology December 2012 - (Page 706)

RESEARCH Accuracy of a Newly Developed Cone-Beam Computerized Tomography-Aided Surgical Guidance System for Dental Implant Placement: An Ex Vivo Study Sema Murat, DDS1* Kıvanc Kamburoglu, DDS, MSc, PhD2 ¸ ˘ ¨ Tuncer Ozen, DDS, PhD3 The aim of the present study was to measure the accuracy of the cone-beam computerized tomography (CBCT)aided StentCad Beyond surgical guidance system and to compare bone-supported and tooth/bone-supported guidance by using this system in dental implant placement ex vivo. Five cadaver mandibles were scanned using an Iluma CBCT scanner. After scanning, DICOM slices were transferred to the StentCad Beyond implant simulation software, which was used for preoperative implant planning. Using the StentCad Beyond guidance system, 9 implant drills were inserted using a bone-supported guidance system and 11 using a tooth/bonesupported guidance system. Mandibles were scanned again and these data were transferred to the StentCad Beyond software. Pre- and postoperative information was superimposed using the Rhinoceros version 4 software program, and deviations between planned and actual drill positions were calculated for each implant. In addition, differences between bone-supported and tooth/bone-supported guidance systems were analyzed by t-test, with a significance level of P , .05. Data analysis found a mean coronal deviation of 1.2 6 0.3 mm and 0.6 6 0.6 mm, mean apical deviation of 1.3 6 0.6 mm and 0.7 6 0.6 mm, mean apical and coronal depth deviation of 1.4 6 0.3 mm and 1.3 6 0.3 mm, and mean angular deviation of 4.28 6 2.08 and 3.08 6 1.58 for tooth/bone supported and bone-supported guides, respectively. No statistical differences were found in depth or angular deviations between groups (P . .05); however, statistically significant differences between groups were found in mean horizontal coronal deviation (P ¼ .016) and mean horizontal apical deviation (P ¼ .047). The StentCad Beyond system was found to be a reliable guide for placing implants ex vivo. Key Words: cone-beam computerized tomography (CBCT), computer-aided surgery, surgical guide, stereolithography, dental implant INTRODUCTION 1 Department of Prosthodontics, Faculty of Dentistry, Ankara University, Ankara, Turkey. 2 Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey. 3 Department of Dentomaxillofacial Radiology, Dental Science ¨ Center, Gulhane Military Medical Academy, Ankara, Turkey. * Corresponding author, e-mail: semamurat47@yahoo.com.tr DOI: 10.1563/AAID-JOI-D-11-00062 P resurgical implant planning is of paramount importance for the successful outcome of dental implant treatment. To enable appropriate placement of implants, planning should include the identification of critical anatomical landmarks, a bone-quality assessment, and prosthetic considerations.1–3 Data obtained by computed tomography 706 Vol. XXXVIII /No. Six /2012

Table of Contents for the Digital Edition of Journal of Oral Implantology December 2012

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Lateral Augmentation of the Maxilla and Mandible Using Framework Technique With Allogeneic Bone Grafts
Accuracy of Cone Beam Computerized Tomography and a Three-Dimensional Stereolithographic Model in Identifying the Anterior Loop of the Mental Nerve: A Study on Cadavers
Evaluation of Microgap Size and Microbial Leakage in the Connection Area of 4 Abutments With Straumann (ITI) Implant
Buccal Bone Plate Remodeling After Immediate Implant Placement With and Without Synthetic Bone Grafting and Flapless Surgery: Radiographic Study in Dogs
Evaluation of Soft Tissues Around Single Tooth Implants in the Anterior Maxilla Restored With Cemented and Screw-Retained Crowns
Accuracy of a Newly Developed Cone-Beam Computerized Tomography-Aided Surgical Guidance System for Dental Implant Placement: An Ex Vivo Study
Nasopalatine Canal Position Relative to the Maxillary Central Incisors: A Cone Beam Computed Tomography Assessment
Esthetics in Implant-Supported Prostheses: A Literature Review
Reliability of Implant Surgical Guides Based on Soft-Tissue Models
Clinical Evaluation of Short and Wide-Diameter Implants Immediately Placed Into Extraction Sockets of Posterior Areas: A 2-Year Retrospective Study
Single Stage Immediate Implant Placements in the Esthetic Zone
Removal of Fractured Dental Implant Screw Using a New Technique: A Case Report
Restoration of Failing Maxillary Implant-Supported Fixed Prosthesis With Cross Arch Splinted Unilateral Zygomatic Implant: A Clinical Report
Oral Rehabilitation of Severe Dentoalveolar Trauma: A Clinical Report
Implant Installation With Bone Augmentation and Transmucosal Healing With Demineralized Human Cortical Bone in the Maxillary Anterior Region: Report of 3 Cases
Bone Morphogenic Protein: An Elixir for Bone Grafting—A Review
Orthodontic Considerations in Restorative Management of Hypodontia Patients With Endosseous Implants
Squamous Cell Carcinoma in Association With Dental Implants: An Assessment of Previously Hypothesized Carcinogenic Mechanisms and a Case Report
Indirect Osteotome Maxillary Sinus Floor Elevation: An Update
Reliability of Implant Surgical Guides Based on Soft-Tissue Models: A Methodological Mistake

Journal of Oral Implantology December 2012