The Experts below are selected from a list of 870 Experts worldwide ranked by ideXlab platform
Sanghoon Kang - One of the best experts on this subject based on the ideXlab platform.
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Genioplasty using a simple cad cam computer aided design and computer aided manufacturing surgical guide
Maxillofacial plastic and reconstructive surgery, 2015Co-Authors: Seho Lim, Moon Key Kim, Sanghoon KangAbstract:Background The present study introduces the design and fabrication of a simple surgical guide with which to perform Genioplasty.
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Genioplasty using a simple cad cam computer aided design and computer aided manufacturing surgical guide
Maxillofacial plastic and reconstructive surgery, 2015Co-Authors: Seho Lim, Moon Key Kim, Sanghoon KangAbstract:The present study introduces the design and fabrication of a simple surgical guide with which to perform Genioplasty. A three-dimensional reconstruction of the patient’s cranio-maxilla region was built, with a dentofacial skeletal model, then derived from CT DICOM data. A surgical simulation was performed on the maxilla and mandible, using three-dimensional cephalometry. We then simulated a full Genioplasty, in silico, using the three-dimensional (3D) model of the mandible, according to the final surgical treatment plan. The simulation allowed us to design a surgical guide for Genioplasty, which was then computer-rendered and 3D-printed. The manufactured surgical device was ultimately used in an actual Genioplasty to guide the osteotomy and to move the cut bone segment to the intended location. We successfully performed the osteotomy, as planned during a Genioplasty, using the computer-aided design and computer-aided manufacturing (CAD/CAM) surgical guide that we initially designed and tested using simulated surgery. The surgical guide that we developed proved to be a simple and practical tool with which to assist the surgeon in accurately cutting and removing bone segments, during a Genioplasty surgery, as preoperatively planned during 3D surgical simulations.
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validation of mandibular Genioplasty using a stereolithographic surgical guide in vitro comparison with a manual measurement method based on preoperative surgical simulation
Journal of Oral and Maxillofacial Surgery, 2014Co-Authors: Sanghoon KangAbstract:Purpose Stereolithographic guidance, increasingly used in orthognathic surgery, has not been completely verified for Genioplasty. This study compared the accuracy of manual measurement with that of a stereolithographic guide in vitro. Materials and Methods Thirty rapid prototype (RP) mandibular models (15 pairs) were included in the experimental (stereolithographic) and control (manual) groups (15 each). Surgical simulation was performed in the 2 groups by advancing the chin 5 mm and then vertically reducing the chin 5 mm using Mimics software. In the stereolithographic group, Genioplasty was performed on mandibular RP models using a 3-dimensionally printed surgical guide based on surgical simulation results. In the control group, it was performed using an osteotomy line drawn according to simulation measurements. For the 2 groups, anterior horizontal transverse error and anterior and posterior vertical errors were compared, as were data from the osteotomized chin segment and the preoperative surgical simulation. Positional difference error was calculated and the differences were evaluated with t tests. Results For advancement Genioplasty, the absolute anterior transverse error value was 0.47 ± 0.35 (mean ± standard deviation) with the stereolithographic guide, less than with the manual method (0.77 ± 0.45; P = .001). For reduction Genioplasty, the absolute anterior vertical error value was 0.27 ± 0.23 mm with the stereolithographic guide versus 0.58 ± 0.49 mm with the manual method (P Conclusion Use of a stereolithographic surgical guide increased accuracy, but the difference in mean error values between methods was only approximately 0.3 mm. The superior accuracy may not be compelling in favor of stereolithographic surgical guides.
Seho Lim - One of the best experts on this subject based on the ideXlab platform.
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Genioplasty using a simple cad cam computer aided design and computer aided manufacturing surgical guide
Maxillofacial plastic and reconstructive surgery, 2015Co-Authors: Seho Lim, Moon Key Kim, Sanghoon KangAbstract:Background The present study introduces the design and fabrication of a simple surgical guide with which to perform Genioplasty.
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Genioplasty using a simple cad cam computer aided design and computer aided manufacturing surgical guide
Maxillofacial plastic and reconstructive surgery, 2015Co-Authors: Seho Lim, Moon Key Kim, Sanghoon KangAbstract:The present study introduces the design and fabrication of a simple surgical guide with which to perform Genioplasty. A three-dimensional reconstruction of the patient’s cranio-maxilla region was built, with a dentofacial skeletal model, then derived from CT DICOM data. A surgical simulation was performed on the maxilla and mandible, using three-dimensional cephalometry. We then simulated a full Genioplasty, in silico, using the three-dimensional (3D) model of the mandible, according to the final surgical treatment plan. The simulation allowed us to design a surgical guide for Genioplasty, which was then computer-rendered and 3D-printed. The manufactured surgical device was ultimately used in an actual Genioplasty to guide the osteotomy and to move the cut bone segment to the intended location. We successfully performed the osteotomy, as planned during a Genioplasty, using the computer-aided design and computer-aided manufacturing (CAD/CAM) surgical guide that we initially designed and tested using simulated surgery. The surgical guide that we developed proved to be a simple and practical tool with which to assist the surgeon in accurately cutting and removing bone segments, during a Genioplasty surgery, as preoperatively planned during 3D surgical simulations.
Moon Key Kim - One of the best experts on this subject based on the ideXlab platform.
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Genioplasty using a simple cad cam computer aided design and computer aided manufacturing surgical guide
Maxillofacial plastic and reconstructive surgery, 2015Co-Authors: Seho Lim, Moon Key Kim, Sanghoon KangAbstract:Background The present study introduces the design and fabrication of a simple surgical guide with which to perform Genioplasty.
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Genioplasty using a simple cad cam computer aided design and computer aided manufacturing surgical guide
Maxillofacial plastic and reconstructive surgery, 2015Co-Authors: Seho Lim, Moon Key Kim, Sanghoon KangAbstract:The present study introduces the design and fabrication of a simple surgical guide with which to perform Genioplasty. A three-dimensional reconstruction of the patient’s cranio-maxilla region was built, with a dentofacial skeletal model, then derived from CT DICOM data. A surgical simulation was performed on the maxilla and mandible, using three-dimensional cephalometry. We then simulated a full Genioplasty, in silico, using the three-dimensional (3D) model of the mandible, according to the final surgical treatment plan. The simulation allowed us to design a surgical guide for Genioplasty, which was then computer-rendered and 3D-printed. The manufactured surgical device was ultimately used in an actual Genioplasty to guide the osteotomy and to move the cut bone segment to the intended location. We successfully performed the osteotomy, as planned during a Genioplasty, using the computer-aided design and computer-aided manufacturing (CAD/CAM) surgical guide that we initially designed and tested using simulated surgery. The surgical guide that we developed proved to be a simple and practical tool with which to assist the surgeon in accurately cutting and removing bone segments, during a Genioplasty surgery, as preoperatively planned during 3D surgical simulations.
Xudong Wang - One of the best experts on this subject based on the ideXlab platform.
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application of a novel three dimensional printing Genioplasty template system and its clinical validation a control study
Scientific Reports, 2017Co-Authors: Hongpu Wei, Feini Zeng, James J Xia, Xudong WangAbstract:The purpose of this control study was to assess the accuracy and clinical validation of a novel Genioplasty template system. Eighty-eight patients were enrolled and divided into 2 groups: experimental group (using Genioplasty templates) and control group (without Genioplasty templates). For the experimental group, the templates were designed based on computerized surgical plan and manufactured using three-dimensional printing technique. The template system included a cutting guide and a pair of repositioning guides. For the control group, traditional intraoperative measurements were used without Genioplasty templates. The outcome evaluation was completed by comparing planned outcomes with postoperative outcomes. Linear and angular differences for the chin was measured and reported using root mean square deviation (RMSD) and the Bland-Altman method. All surgeries were successfully completed. There was no difficulty to use Genioplasty templates. For the experimental group, the largest RMSDs were 1.1 mm in anteroposterior direction and 2.6° in pitch orientation. For the control group without templates, the largest RMSDs were 2.63 mm in superoinferior direction and 7.21° in pitch orientation. Our findings suggest that this Genioplasty template system provides greater accuracy in repositioning the chin than traditional intraoperative measurements, and the computerized plan can be transferred accurately to the patient for Genioplasty.
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clinical application and accuracy of the Genioplasty surgical templates system for osseous Genioplasty
Chinese journal of stomatology, 2016Co-Authors: Hongpu Wei, Tengfei Jiang, Shunyao Shen, Guofang Shen, Xudong WangAbstract:Objective: To develop and validate a new Genioplasty templates system for monoblock osseous Genioplasty. Methods: Thirty-six patients with chin deformities were enrolled in this study. The chin template system included a cutting guide and a repositioning guide for a Genioplasty. Chin templates were designed in a computer and fabricated using a three-dimensional printing technique. The accuracy of the Genioplasty templates were assessed by comparing the actual postoperative outcomes with the virtual plan. Results: All Genioplasty was successfully completed by the template system. The largest linear root-mean-square deviation(RMSD) between the planned and the postoperative chin segments was 1.16 mm and the largest angular RMSD was 3.06°. Conclusions: The results showed that the chin template system provides a reliable method for transfer of Genioplasty planning. The operation precision of the Genioplasty can be improved by using the surgical templates system.
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a new design of cad cam surgical template system for two piece narrowing Genioplasty
International Journal of Oral and Maxillofacial Surgery, 2016Co-Authors: Steve Guofang Shen, James J Xia, Xudong WangAbstract:The purpose of this study was to develop and validate a new chin template system for a two-piece narrowing Genioplasty. Nine patients with wide chin deformities were enrolled. Surgeries were planned with the computer-aided surgical simulation (CASS) planning method. Surgical splints and chin templates were designed in a computer and fabricated using a three-dimensional printing technique. The chin template system included a cutting guide and a repositioning guide for a two-piece narrowing Genioplasty. These guides were also designed to avoid the mental foramen area and inferior alveolar nerve loops during the osteotomy, for nerve protection. After surgery, the outcome evaluation was completed by first superimposing the postoperative computed tomography model onto the planned model, and then measuring the differences between the planned and actual outcomes. All surgeries were completed successfully using the chin template system. No inferior alveolar nerve damage was seen in this study. With the use of the chin templates, the largest linear root mean square deviation (RMSD) between the planned and the postoperative chin segments was 0.7mm and the largest angular RMSD was 4.5°. The results showed that the chin template system provides a reliable method of transfer for two-piece osseous narrowing Genioplasty planning.
James J Xia - One of the best experts on this subject based on the ideXlab platform.
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application of a novel three dimensional printing Genioplasty template system and its clinical validation a control study
Scientific Reports, 2017Co-Authors: Hongpu Wei, Feini Zeng, James J Xia, Xudong WangAbstract:The purpose of this control study was to assess the accuracy and clinical validation of a novel Genioplasty template system. Eighty-eight patients were enrolled and divided into 2 groups: experimental group (using Genioplasty templates) and control group (without Genioplasty templates). For the experimental group, the templates were designed based on computerized surgical plan and manufactured using three-dimensional printing technique. The template system included a cutting guide and a pair of repositioning guides. For the control group, traditional intraoperative measurements were used without Genioplasty templates. The outcome evaluation was completed by comparing planned outcomes with postoperative outcomes. Linear and angular differences for the chin was measured and reported using root mean square deviation (RMSD) and the Bland-Altman method. All surgeries were successfully completed. There was no difficulty to use Genioplasty templates. For the experimental group, the largest RMSDs were 1.1 mm in anteroposterior direction and 2.6° in pitch orientation. For the control group without templates, the largest RMSDs were 2.63 mm in superoinferior direction and 7.21° in pitch orientation. Our findings suggest that this Genioplasty template system provides greater accuracy in repositioning the chin than traditional intraoperative measurements, and the computerized plan can be transferred accurately to the patient for Genioplasty.
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a new design of cad cam surgical template system for two piece narrowing Genioplasty
International Journal of Oral and Maxillofacial Surgery, 2016Co-Authors: Steve Guofang Shen, James J Xia, Xudong WangAbstract:The purpose of this study was to develop and validate a new chin template system for a two-piece narrowing Genioplasty. Nine patients with wide chin deformities were enrolled. Surgeries were planned with the computer-aided surgical simulation (CASS) planning method. Surgical splints and chin templates were designed in a computer and fabricated using a three-dimensional printing technique. The chin template system included a cutting guide and a repositioning guide for a two-piece narrowing Genioplasty. These guides were also designed to avoid the mental foramen area and inferior alveolar nerve loops during the osteotomy, for nerve protection. After surgery, the outcome evaluation was completed by first superimposing the postoperative computed tomography model onto the planned model, and then measuring the differences between the planned and actual outcomes. All surgeries were completed successfully using the chin template system. No inferior alveolar nerve damage was seen in this study. With the use of the chin templates, the largest linear root mean square deviation (RMSD) between the planned and the postoperative chin segments was 0.7mm and the largest angular RMSD was 4.5°. The results showed that the chin template system provides a reliable method of transfer for two-piece osseous narrowing Genioplasty planning.