The Experts below are selected from a list of 144 Experts worldwide ranked by ideXlab platform
Mahesh B Mawale - One of the best experts on this subject based on the ideXlab platform.
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development of Customized Implant and Customized surgical osteotomy guide in ablative tumor surgery for accurate mandibular reconstruction
International Journal of Medical Robotics and Computer Assisted Surgery, 2020Co-Authors: Sandeep W Dahake, Abhaykumar M Kuthe, Mahesh B Mawale, Pranav S Sapkal, Ashutosh D Bagde, Subodh Daronde, Manish Kamble, Bhupesh SarodeAbstract:OBJECTIVES: The objective of this study was to provide the generalized methodology for design and development of a Customized Implant and Customized surgical osteotomy guide (CSOG) for precise mandibular tumor resection and placement of a Customized Implant in ablative tumor surgery for accurate mandibular reconstruction. METHODS: Medical imaging technique, image processing, virtual surgical planning (VSP), biomedical computer-aided design (CAD), and rapid prototyping (RP) were used to develop CSOG and Customized Implant. A mock surgical test and an experimental analysis were performed on the biomodel (RP assisted diseased model) to check the effectiveness of the CSOG. RESULTS: The paired t test showed the statistically significant result with the use of CSOG as compared to the without using CSOG in ablative mandibular tumor surgery. CONCLUSIONS: A mock test and an experimental analysis proved that, the precise tumor resection and Customized Implant placement with minimal gap between bone-Implant junctions in mandibular reconstruction using CSOG.
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precision of Customized surgical osteotomy guide csog in mandibular reconstruction with a Customized Implant
Rapid Prototyping Journal, 2019Co-Authors: Sandeep W Dahake, Abhaykumar M Kuthe, Mahesh B MawaleAbstract:This study aims to find the usefulness of the Customized surgical osteotomy guide (CSOG) for accurate mandibular tumor resection for boosting the accuracy of prefabricated Customized Implant fixation in mandibular reconstructions.,In all, 30 diseased mandibular RP models (biomodels) were allocated for the study (for experimental group [n = 15] and for control group [n = 15]). To reconstruct the mandible with Customized Implant in the experimental group, CSOGs and in control group, no CSOG were used for accurate tumor resections. In control group, only preoperative virtual surgical planning (VSP) and reconstructed RP mandible model were used for the reference. Individually each patient’s preoperative mandibular reconstructions data of both the groups were superimposed to the preoperative VSP of respective patient by registering images with the non-surgical side of the mandible. In both the groups, 3D measurements were taken on the reconstructed side and compared the preoperative VSP and postoperative reconstructed mandible data. The sum of the differences between pre and postoperative data was considered as the total error. This procedure was followed for both the groups and compared the obtained error between the two groups using statistical analysis.,The use of CSOG for accurate tumor resection and exact Implant fixation in mandibular reconstruction produced a smaller total error than without using CSOG.,The results showed that, benefits provided with the use of CSOG in mandibular reconstruction justified its use over the without using CSOG, even in free hand tumor resection using rotating burr.
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finite element analysis of Customized Implant in mandibular reconstruction after tumor resection with and without using Customized surgical osteotomy guide
International Journal of Medical Robotics and Computer Assisted Surgery, 2018Co-Authors: Sandeep W Dahake, Abhaykumar M Kuthe, Sanket Kulkarni, Mahesh B MawaleAbstract:Objectives The aim of this work was to compare different 12 cases (3 patients * 4 cases = 12 cases) with varying gaps between Implant and bone by analyzing the effect of these gaps on Implant and screws using FEM. Methods In each patient's case 1 using CSOG and in case 2, 3, and 4 without using CSOG tumor cutting was done. Hence in each patient zero gaps at case 1 and overcutting at case 2, 3, and 4 have obtained at different locations. Results FEM results reveal that in each patient's case 4 (maximum gap) was more susceptible to loosening of the screws due to higher strains (37%) and Implant failure due to higher stress (28%) concentration under the same loading conditions when compared with case 1 (zero gap). Conclusions The study reveals that mandibular reconstruction with Implant placement using CSOG can significantly enhance the stability and safety of the Implant.
Sandeep W Dahake - One of the best experts on this subject based on the ideXlab platform.
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development of Customized Implant and Customized surgical osteotomy guide in ablative tumor surgery for accurate mandibular reconstruction
International Journal of Medical Robotics and Computer Assisted Surgery, 2020Co-Authors: Sandeep W Dahake, Abhaykumar M Kuthe, Mahesh B Mawale, Pranav S Sapkal, Ashutosh D Bagde, Subodh Daronde, Manish Kamble, Bhupesh SarodeAbstract:OBJECTIVES: The objective of this study was to provide the generalized methodology for design and development of a Customized Implant and Customized surgical osteotomy guide (CSOG) for precise mandibular tumor resection and placement of a Customized Implant in ablative tumor surgery for accurate mandibular reconstruction. METHODS: Medical imaging technique, image processing, virtual surgical planning (VSP), biomedical computer-aided design (CAD), and rapid prototyping (RP) were used to develop CSOG and Customized Implant. A mock surgical test and an experimental analysis were performed on the biomodel (RP assisted diseased model) to check the effectiveness of the CSOG. RESULTS: The paired t test showed the statistically significant result with the use of CSOG as compared to the without using CSOG in ablative mandibular tumor surgery. CONCLUSIONS: A mock test and an experimental analysis proved that, the precise tumor resection and Customized Implant placement with minimal gap between bone-Implant junctions in mandibular reconstruction using CSOG.
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precision of Customized surgical osteotomy guide csog in mandibular reconstruction with a Customized Implant
Rapid Prototyping Journal, 2019Co-Authors: Sandeep W Dahake, Abhaykumar M Kuthe, Mahesh B MawaleAbstract:This study aims to find the usefulness of the Customized surgical osteotomy guide (CSOG) for accurate mandibular tumor resection for boosting the accuracy of prefabricated Customized Implant fixation in mandibular reconstructions.,In all, 30 diseased mandibular RP models (biomodels) were allocated for the study (for experimental group [n = 15] and for control group [n = 15]). To reconstruct the mandible with Customized Implant in the experimental group, CSOGs and in control group, no CSOG were used for accurate tumor resections. In control group, only preoperative virtual surgical planning (VSP) and reconstructed RP mandible model were used for the reference. Individually each patient’s preoperative mandibular reconstructions data of both the groups were superimposed to the preoperative VSP of respective patient by registering images with the non-surgical side of the mandible. In both the groups, 3D measurements were taken on the reconstructed side and compared the preoperative VSP and postoperative reconstructed mandible data. The sum of the differences between pre and postoperative data was considered as the total error. This procedure was followed for both the groups and compared the obtained error between the two groups using statistical analysis.,The use of CSOG for accurate tumor resection and exact Implant fixation in mandibular reconstruction produced a smaller total error than without using CSOG.,The results showed that, benefits provided with the use of CSOG in mandibular reconstruction justified its use over the without using CSOG, even in free hand tumor resection using rotating burr.
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finite element analysis of Customized Implant in mandibular reconstruction after tumor resection with and without using Customized surgical osteotomy guide
International Journal of Medical Robotics and Computer Assisted Surgery, 2018Co-Authors: Sandeep W Dahake, Abhaykumar M Kuthe, Sanket Kulkarni, Mahesh B MawaleAbstract:Objectives The aim of this work was to compare different 12 cases (3 patients * 4 cases = 12 cases) with varying gaps between Implant and bone by analyzing the effect of these gaps on Implant and screws using FEM. Methods In each patient's case 1 using CSOG and in case 2, 3, and 4 without using CSOG tumor cutting was done. Hence in each patient zero gaps at case 1 and overcutting at case 2, 3, and 4 have obtained at different locations. Results FEM results reveal that in each patient's case 4 (maximum gap) was more susceptible to loosening of the screws due to higher strains (37%) and Implant failure due to higher stress (28%) concentration under the same loading conditions when compared with case 1 (zero gap). Conclusions The study reveals that mandibular reconstruction with Implant placement using CSOG can significantly enhance the stability and safety of the Implant.
Abhaykumar M Kuthe - One of the best experts on this subject based on the ideXlab platform.
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development of Customized Implant and Customized surgical osteotomy guide in ablative tumor surgery for accurate mandibular reconstruction
International Journal of Medical Robotics and Computer Assisted Surgery, 2020Co-Authors: Sandeep W Dahake, Abhaykumar M Kuthe, Mahesh B Mawale, Pranav S Sapkal, Ashutosh D Bagde, Subodh Daronde, Manish Kamble, Bhupesh SarodeAbstract:OBJECTIVES: The objective of this study was to provide the generalized methodology for design and development of a Customized Implant and Customized surgical osteotomy guide (CSOG) for precise mandibular tumor resection and placement of a Customized Implant in ablative tumor surgery for accurate mandibular reconstruction. METHODS: Medical imaging technique, image processing, virtual surgical planning (VSP), biomedical computer-aided design (CAD), and rapid prototyping (RP) were used to develop CSOG and Customized Implant. A mock surgical test and an experimental analysis were performed on the biomodel (RP assisted diseased model) to check the effectiveness of the CSOG. RESULTS: The paired t test showed the statistically significant result with the use of CSOG as compared to the without using CSOG in ablative mandibular tumor surgery. CONCLUSIONS: A mock test and an experimental analysis proved that, the precise tumor resection and Customized Implant placement with minimal gap between bone-Implant junctions in mandibular reconstruction using CSOG.
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precision of Customized surgical osteotomy guide csog in mandibular reconstruction with a Customized Implant
Rapid Prototyping Journal, 2019Co-Authors: Sandeep W Dahake, Abhaykumar M Kuthe, Mahesh B MawaleAbstract:This study aims to find the usefulness of the Customized surgical osteotomy guide (CSOG) for accurate mandibular tumor resection for boosting the accuracy of prefabricated Customized Implant fixation in mandibular reconstructions.,In all, 30 diseased mandibular RP models (biomodels) were allocated for the study (for experimental group [n = 15] and for control group [n = 15]). To reconstruct the mandible with Customized Implant in the experimental group, CSOGs and in control group, no CSOG were used for accurate tumor resections. In control group, only preoperative virtual surgical planning (VSP) and reconstructed RP mandible model were used for the reference. Individually each patient’s preoperative mandibular reconstructions data of both the groups were superimposed to the preoperative VSP of respective patient by registering images with the non-surgical side of the mandible. In both the groups, 3D measurements were taken on the reconstructed side and compared the preoperative VSP and postoperative reconstructed mandible data. The sum of the differences between pre and postoperative data was considered as the total error. This procedure was followed for both the groups and compared the obtained error between the two groups using statistical analysis.,The use of CSOG for accurate tumor resection and exact Implant fixation in mandibular reconstruction produced a smaller total error than without using CSOG.,The results showed that, benefits provided with the use of CSOG in mandibular reconstruction justified its use over the without using CSOG, even in free hand tumor resection using rotating burr.
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finite element analysis of Customized Implant in mandibular reconstruction after tumor resection with and without using Customized surgical osteotomy guide
International Journal of Medical Robotics and Computer Assisted Surgery, 2018Co-Authors: Sandeep W Dahake, Abhaykumar M Kuthe, Sanket Kulkarni, Mahesh B MawaleAbstract:Objectives The aim of this work was to compare different 12 cases (3 patients * 4 cases = 12 cases) with varying gaps between Implant and bone by analyzing the effect of these gaps on Implant and screws using FEM. Methods In each patient's case 1 using CSOG and in case 2, 3, and 4 without using CSOG tumor cutting was done. Hence in each patient zero gaps at case 1 and overcutting at case 2, 3, and 4 have obtained at different locations. Results FEM results reveal that in each patient's case 4 (maximum gap) was more susceptible to loosening of the screws due to higher strains (37%) and Implant failure due to higher stress (28%) concentration under the same loading conditions when compared with case 1 (zero gap). Conclusions The study reveals that mandibular reconstruction with Implant placement using CSOG can significantly enhance the stability and safety of the Implant.
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Customized hip Implant testing using gait cycle for normal walking and walking up and down stairs
The 5th International Conference on Computational Methods (ICCM2014), 2014Co-Authors: Abhaykumar M Kuthe, Mangesh DharmeAbstract:Custom-made or patient specific Implant is the need of the hour as standard Implant available on the shelf fails in the long run. There is need of testing of Customized Implant for dynamic activities like normal walking and walking up and down stairs In this paper, experimental model of Customized hip Implant is developed to find out the strains and stresses in the hip Implant. The finite element analysis is also performed under normal walking and walking up and down stairs. For creating a CAD model of an Implant, the dimensions were obtained from the hip joint radiograph of the patient and load is applied as per gait cycle. The comparison between finite element analysis and experimental result is carried out. This study also proposes multiple linear regression models to predict the maximum stress during human activities like normal walking and walking up and down stairs for Customized Implant. Keywords : Customized Implant, Gait cycle, Testing, Finite element analysis, Regression model
Z. Xu - One of the best experts on this subject based on the ideXlab platform.
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Design and manufacture of Customized dental Implants by using reverse engineering and selective laser melting technology
Journal of Prosthetic Dentistry, 2014Co-Authors: Jianyu Chen, Zhiguang Zhang, G. Zhang, X. Chen, Chunyu Zhang, Z. XuAbstract:Statement of problem Recently a new therapeutic concept of patient-specific Implant dentistry has been advanced based on computer-aided design/computer-aided manufacturing technology. However, a comprehensive study of the design and 3-dimensional (3D) printing of the Customized Implants, their mechanical properties, and their biomechanical behavior is lacking. Purpose The purpose of this study was to evaluate the mechanical and biomechanical performance of a novel custom-made dental Implant fabricated by the selective laser melting technique with simulation and in vitro experimental studies. Material and methods Two types of Customized Implants were designed by using reverse engineering: a root-analog Implant and a root-analog threaded Implant. The titanium Implants were printed layer by layer with the selective laser melting technique. The relative density, surface roughness, tensile properties, bend strength, and dimensional accuracy of the specimens were evaluated. Nonlinear and linear finite element analysis and experimental studies were used to investigate the stress distribution, micromotion, and primary stability of the Implants. Results Selective laser melting 3D printing technology was able to reproduce the Customized Implant designs and produce high density and strength and adequate dimensional accuracy. Better stress distribution and lower maximum micromotions were observed for the root-analog threaded Implant model than for the root-analog Implant model. In the experimental tests, the Implant stability quotient and pull-out strength of the 2 types of Implants indicated that better primary stability can be obtained with a root-analog threaded Implant design. Conclusions Selective laser melting proved to be an efficient means of printing fully dense Customized Implants with high strength and sufficient dimensional accuracy. Adding the threaded characteristic to the Customized root-analog threaded Implant design maintained the approximate geometry of the natural root and exhibited better stress distribution and primary stability.
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Design and manufacture of Customized dental Implants by using reverse engineering and selective laser melting technology
J Prosthet Dent, 2014Co-Authors: Jin Chen, Ziyu Zhang, Jianyu Chen, Zhiguang Zhang, Chengning Zhang, G. Zhang, X. Chen, Chunyu Zhang, Z. XuAbstract:STATEMENT OF PROBLEM: Recently a new therapeutic concept of patient-specific Implant dentistry has been advanced based on computer-aided design/computer-aided manufacturing technology. However, a comprehensive study of the design and 3-dimensional (3D) printing of the Customized Implants, their mechanical properties, and their biomechanical behavior is lacking. PURPOSE: The purpose of this study was to evaluate the mechanical and biomechanical performance of a novel custom-made dental Implant fabricated by the selective laser melting technique with simulation and in vitro experimental studies. MATERIAL AND METHODS: Two types of Customized Implants were designed by using reverse engineering: a root-analog Implant and a root-analog threaded Implant. The titanium Implants were printed layer by layer with the selective laser melting technique. The relative density, surface roughness, tensile properties, bend strength, and dimensional accuracy of the specimens were evaluated. Nonlinear and linear finite element analysis and experimental studies were used to investigate the stress distribution, micromotion, and primary stability of the Implants. RESULTS: Selective laser melting 3D printing technology was able to reproduce the Customized Implant designs and produce high density and strength and adequate dimensional accuracy. Better stress distribution and lower maximum micromotions were observed for the root-analog threaded Implant model than for the root-analog Implant model. In the experimental tests, the Implant stability quotient and pull-out strength of the 2 types of Implants indicated that better primary stability can be obtained with a root-analog threaded Implant design. CONCLUSIONS: Selective laser melting proved to be an efficient means of printing fully dense Customized Implants with high strength and sufficient dimensional accuracy. Adding the threaded characteristic to the Customized root-analog threaded Implant design maintained the approximate geometry of the natural root and exhibited better stress distribution and primary stability.
L. Guyot - One of the best experts on this subject based on the ideXlab platform.
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PEEK Customized Implant for skull esthetic reconstruction
Rev Stomatol Chir Maxillofac, 2012Co-Authors: J. M. Foletti, P. Compes, Najme Lari, Patrick Dumas, L. GuyotAbstract:INTRODUCTION: Craniotomies provide unsightly sequels. Conservative methods for the removed bone, autologous graft, or use of surgical cement do not always allow restoring cranial symmetry. A Customized PolyEtherEtherKetone (PEEK) Implant may then be used. This Implant is made from 3D CT reconstruction. The PEEK material is biocompatible, conformable, strong enough to protect the brain. TECHNICAL NOTE: The authors report a case of aesthetic reconstruction of a large cranial defect using a Customized PEEK Implant. Balloon scalp expansion was performed before Implant placement. DISCUSSION: The aesthetic results are satisfactory, the postoperative short and simple. PEEK is a good alternative to titanium Implants for Customized Implants; it is easier to use and lighter. This Customized Implant is well suited to correct unsightly sequels of craniotomy.
