The Experts below are selected from a list of 3423 Experts worldwide ranked by ideXlab platform
Hans-florian Zeilhofer - One of the best experts on this subject based on the ideXlab platform.
-
comparing the bone healing after cold ablation robot guided er yag laser osteotomy and piezoelectric osteotomy a pilot study in a minipig mandible
Lasers in Surgery and Medicine, 2020Co-Authors: Kyungwon Baek, Hans-florian Zeilhofer, Philippe C. Cattin, Philipp Juergens, Michel DardAbstract:Background and objective To take major advantage of erbium-doped yttrium aluminium garnet (Er:YAG) lasers in osteotomy-like freedom of cutting geometries and high accuracy-the integration and miniaturization of the robot, laser, and navigation technology was tried and applied to minipigs. The investigators hypothesized laser osteotomy would render acceptable bone healing based on the intraoperative findings and postoperative cut surface analysis. Study design/materials and methods We designed and implemented a comparative bone-cutting surgery in the minipig mandible with a cold ablation robot-guided Er:YAG laser Osteotome (CARLO) and a piezoelectric (PZE) Osteotome. The sample was composed of different patterns of defects in the mandibles of six grown-up female Goettingen minipigs. The predictor variable was Er:YAG osteotomy and PZE osteotomy. The outcome variable was the cut surface characteristics and bone healing at 4 and 8 weeks postoperatively. Descriptive and qualitative comparison was executed. Results The sample was composed of four kinds of bone defects on both sides of the mandibles of six minipigs. We observed more bleeding during the operation, open-cut surfaces, and a faster healing pattern with the laser osteotomy. There was a possible association between the intraoperative findings, postoperative cut surface analysis, and the bone healing pattern. Conclusions The results of this study suggest that characteristic open-cut surfaces could explain favorable bone healing after laser osteotomy. Future studies will focus on the quantification of the early healing characteristics after laser osteotomy, its diverse application, and the safety feature. Lasers Surg. Med. © 2020 Wiley Periodicals LLC.
-
Performing partial mandibular resection, fibula free flap reconstruction and midfacial osteotomies with a cold ablation and robot-guided Er:YAG laser Osteotome (CARLO®) – A study on applicability and effectiveness in human cadavers
Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery, 2018Co-Authors: Marcello Augello, Cyrill Baetscher, Mireille Segesser, Hans-florian Zeilhofer, Philippe C. Cattin, Philipp JuergensAbstract:Abstract Objective Aim of the study was to prove the safety, accuracy characteristics of contact-free laser osteotomy executed with the cold ablation and robot-guided Er:YAG laser Osteotome in a human cadaver test. Material and methods On six human cadavers mandible resections with a swallowtail like pattern were performed with the laser system on each side. The defects were reconstructed with a fibula graft of identical design and enlarged by 0.2 units. Mandibles and fibulas width as well surgery times were recorded. Additionally a Le Fort I and median mandible split were done. Macroscopically, the bone margins were examined for necrosis. Results Laser osteotomies of the mandible up to a depth of 23 mm were possible without any thermal damage. Repeatability and precision of the system could be easily assessed. With the navigation system precise control of localization was achievable. Mean surgery time for the mandible resection was 13.32 min and for the fibula osteotomy 12.38 min. Conclusion The simply transmission of a cold ablation and robot-guided laser Osteotome in an operation room identical environment for surgical interventions could be demonstrated. Precise osteotomy patterns with freedom in the design and carbonisation-free cut surfaces have been shown.
-
Bone healing of the sheep tibia shaft after carbon dioxide laser osteotomy: histological results
Lasers in Medical Science, 2010Co-Authors: Johannes J. Kuttenberger, Alessa Waibel, Stefan Stübinger, Martin Werner, Manfred Klasing, Mikhail Ivanenko, Peter Hering, Brigitte Rechenberg, Robert Sader, Hans-florian ZeilhoferAbstract:The aim of the study was to compare the histological results after complete osteotomies of the sheep tibia using either the prototype carbon dioxide (CO_2) laser Osteotome ‘OsteoLAS’ ( n = 12) or an oscillating saw ( n = 12). The laser parameters were as follows: wavelength 10.6 µm; energy of laser pulses 75–85 mJ; pulse duration 80 μs; pulse repetition rate 200 Hz; spot diameter 460 μm (1/e^2 level); radiant exposure 45–51 J/cm^2; peak irradiance 0.56–0.64 MW/cm^2. Both groups were divided into two subgroups ( n = 6), and the animals were killed after 4 weeks or 12 weeks, respectively. Light and fluorescence microscopy with semiquantitative analysis and histomorphometry were performed to compare bone healing. Charring-free laser osteotomies were possible up to a depth of 20 mm with the short-pulsed CO_2 laser. The laser, however, required a significantly longer time to perform, and a wedge-shaped gap was present on the cis-cortex. After 4 weeks the osteotomy gaps were almost unchanged in both groups and filled with connective tissue. After 12 weeks the gaps were filled with newly formed bone in both groups. Primary gap healing was predominant in the laser group and longitudinal cortical remodelling in the control group. On a cellular level, no fundamental differences were observed for early and late stages of bone healing. Further research has to be focussed on improving the CO_2 laser ostetome in order to reduce the long duration of the laser osteotomy and the necessity of creating a wedge-shaped cut in thick bones.
-
in vivo animal trials with a scanning co2 laser Osteotome
Lasers in Surgery and Medicine, 2005Co-Authors: Mikhail Ivanenko, Hans-florian Zeilhofer, Martin Werner, Robert Sader, Said Afilal, Martina Hartstock, Christian Von Hanisch, Stefan Milz, Wolf Erhardt, Peter HeringAbstract:Background and Objectives We report first results of animal trials using an improved laser osteotomy technique. This technique allows effective bone cutting without the usual thermal tissue damage. Study Design/Materials and Methods A comparative in vivo study on mandibles of seven canines was done with a mechanical saw and a CO2 laser based Osteotome with a pulse duration of 80 microseconds. The laser incisions were performed in a multipass mode using a PC-controlled galvanic beam scanner and an assisting water spray. Results A complete healing through a whole bony rearrangement of the osteotomy gap with newly build lamellar Haversian bone was observed 22 days after the laser operations under optimal irradiation conditions. Conclusions An effective CO2 laser osteotomy without aggravating thermal side effects and healing delay is possible using the described irradiation technique. It allows an arbitrary cut geometry and may result in new advantageous bone surgery procedures. Lasers Surg. Med. 37:144–148, 2005. © 2005 Wiley-Liss, Inc.
Philipp Juergens - One of the best experts on this subject based on the ideXlab platform.
-
comparing the bone healing after cold ablation robot guided er yag laser osteotomy and piezoelectric osteotomy a pilot study in a minipig mandible
Lasers in Surgery and Medicine, 2020Co-Authors: Kyungwon Baek, Hans-florian Zeilhofer, Philippe C. Cattin, Philipp Juergens, Michel DardAbstract:Background and objective To take major advantage of erbium-doped yttrium aluminium garnet (Er:YAG) lasers in osteotomy-like freedom of cutting geometries and high accuracy-the integration and miniaturization of the robot, laser, and navigation technology was tried and applied to minipigs. The investigators hypothesized laser osteotomy would render acceptable bone healing based on the intraoperative findings and postoperative cut surface analysis. Study design/materials and methods We designed and implemented a comparative bone-cutting surgery in the minipig mandible with a cold ablation robot-guided Er:YAG laser Osteotome (CARLO) and a piezoelectric (PZE) Osteotome. The sample was composed of different patterns of defects in the mandibles of six grown-up female Goettingen minipigs. The predictor variable was Er:YAG osteotomy and PZE osteotomy. The outcome variable was the cut surface characteristics and bone healing at 4 and 8 weeks postoperatively. Descriptive and qualitative comparison was executed. Results The sample was composed of four kinds of bone defects on both sides of the mandibles of six minipigs. We observed more bleeding during the operation, open-cut surfaces, and a faster healing pattern with the laser osteotomy. There was a possible association between the intraoperative findings, postoperative cut surface analysis, and the bone healing pattern. Conclusions The results of this study suggest that characteristic open-cut surfaces could explain favorable bone healing after laser osteotomy. Future studies will focus on the quantification of the early healing characteristics after laser osteotomy, its diverse application, and the safety feature. Lasers Surg. Med. © 2020 Wiley Periodicals LLC.
-
Performing partial mandibular resection, fibula free flap reconstruction and midfacial osteotomies with a cold ablation and robot-guided Er:YAG laser Osteotome (CARLO®) – A study on applicability and effectiveness in human cadavers
Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery, 2018Co-Authors: Marcello Augello, Cyrill Baetscher, Mireille Segesser, Hans-florian Zeilhofer, Philippe C. Cattin, Philipp JuergensAbstract:Abstract Objective Aim of the study was to prove the safety, accuracy characteristics of contact-free laser osteotomy executed with the cold ablation and robot-guided Er:YAG laser Osteotome in a human cadaver test. Material and methods On six human cadavers mandible resections with a swallowtail like pattern were performed with the laser system on each side. The defects were reconstructed with a fibula graft of identical design and enlarged by 0.2 units. Mandibles and fibulas width as well surgery times were recorded. Additionally a Le Fort I and median mandible split were done. Macroscopically, the bone margins were examined for necrosis. Results Laser osteotomies of the mandible up to a depth of 23 mm were possible without any thermal damage. Repeatability and precision of the system could be easily assessed. With the navigation system precise control of localization was achievable. Mean surgery time for the mandible resection was 13.32 min and for the fibula osteotomy 12.38 min. Conclusion The simply transmission of a cold ablation and robot-guided laser Osteotome in an operation room identical environment for surgical interventions could be demonstrated. Precise osteotomy patterns with freedom in the design and carbonisation-free cut surfaces have been shown.
Vernon Velho - One of the best experts on this subject based on the ideXlab platform.
-
Ultrasonic Osteotome: A cutting edge technology, our experience in 96 patients
International Journal of Neural Systems, 2017Co-Authors: Vernon Velho, Hrushikesh Kharosekar, S Jasmit, Shonali Valsangkar, Deepak PalandeAbstract:The ultrasonic Osteotome is a tissue-specific device that allows the surgeon to make precise osteotomies while protecting collateral or adjacent soft tissue structures. The recurring impacts pulverize the noncompliant crystalline structure resulting in a precise cut. The more compliant adjacent soft tissue is not affected by the ultrasonic oscillation. The purpose of this study is to present our experience of using this technology in osteotomies. We reviewed 96 patients, both male and female; of different ages in which ultrasonic Osteotome was used to perform an osteotomy of different manners (Craniotomy, laminotomy, facetectomy, etc.). Patients with head injury, spine injury, degenerative spine diseases, and brain tumors were included in this study. In all these patients, the bone cut was even with minimal surrounding bone loss. The time required for the osteotomy was reduced to half. There was no damage to underlying dura, cord or nerve structures. Ultrasonic Osteotome is a safe and effective ultrasonic bone cutting device that can be used to facilitate osteotomies in various types of cranial and spinal surgeries. This device allows precision bone cutting with minimal surrounding bone loss and obviates the risk associated with the use of high-speed burrs and oscillating saws.
-
Ultrasonic Osteotome: A cutting edge technology, our experience in 96 patients
Indian Journal of Neurosurgery, 2017Co-Authors: Hrushikesh Kharosekar, S Jasmit, Shonali Valsangkar, Deepak Palande, Vernon VelhoAbstract:Background: The ultrasonic Osteotome is a tissue-specific device that allows the surgeon to make precise osteotomies while protecting collateral or adjacent soft tissue structures. The recurring impacts pulverize the noncompliant crystalline structure resulting in a precise cut. The more compliant adjacent soft tissue is not affected by the ultrasonic oscillation. Objective: The purpose of this study is to present our experience of using this technology in osteotomies. Materials and Methods: We reviewed 96 patients, both male and female; of different ages in which ultrasonic Osteotome was used to perform an osteotomy of different manners (Craniotomy, laminotomy, facetectomy, etc.). Patients with head injury, spine injury, degenerative spine diseases, and brain tumors were included in this study. Results: In all these patients, the bone cut was even with minimal surrounding bone loss. The time required for the osteotomy was reduced to half. There was no damage to underlying dura, cord or nerve structures. Conclusions: Ultrasonic Osteotome is a safe and effective ultrasonic bone cutting device that can be used to facilitate osteotomies in various types of cranial and spinal surgeries. This device allows precision bone cutting with minimal surrounding bone loss and obviates the risk associated with the use of high-speed burrs and oscillating saws
Deepak Palande - One of the best experts on this subject based on the ideXlab platform.
-
Ultrasonic Osteotome: A cutting edge technology, our experience in 96 patients
International Journal of Neural Systems, 2017Co-Authors: Vernon Velho, Hrushikesh Kharosekar, S Jasmit, Shonali Valsangkar, Deepak PalandeAbstract:The ultrasonic Osteotome is a tissue-specific device that allows the surgeon to make precise osteotomies while protecting collateral or adjacent soft tissue structures. The recurring impacts pulverize the noncompliant crystalline structure resulting in a precise cut. The more compliant adjacent soft tissue is not affected by the ultrasonic oscillation. The purpose of this study is to present our experience of using this technology in osteotomies. We reviewed 96 patients, both male and female; of different ages in which ultrasonic Osteotome was used to perform an osteotomy of different manners (Craniotomy, laminotomy, facetectomy, etc.). Patients with head injury, spine injury, degenerative spine diseases, and brain tumors were included in this study. In all these patients, the bone cut was even with minimal surrounding bone loss. The time required for the osteotomy was reduced to half. There was no damage to underlying dura, cord or nerve structures. Ultrasonic Osteotome is a safe and effective ultrasonic bone cutting device that can be used to facilitate osteotomies in various types of cranial and spinal surgeries. This device allows precision bone cutting with minimal surrounding bone loss and obviates the risk associated with the use of high-speed burrs and oscillating saws.
-
Ultrasonic Osteotome: A cutting edge technology, our experience in 96 patients
Indian Journal of Neurosurgery, 2017Co-Authors: Hrushikesh Kharosekar, S Jasmit, Shonali Valsangkar, Deepak Palande, Vernon VelhoAbstract:Background: The ultrasonic Osteotome is a tissue-specific device that allows the surgeon to make precise osteotomies while protecting collateral or adjacent soft tissue structures. The recurring impacts pulverize the noncompliant crystalline structure resulting in a precise cut. The more compliant adjacent soft tissue is not affected by the ultrasonic oscillation. Objective: The purpose of this study is to present our experience of using this technology in osteotomies. Materials and Methods: We reviewed 96 patients, both male and female; of different ages in which ultrasonic Osteotome was used to perform an osteotomy of different manners (Craniotomy, laminotomy, facetectomy, etc.). Patients with head injury, spine injury, degenerative spine diseases, and brain tumors were included in this study. Results: In all these patients, the bone cut was even with minimal surrounding bone loss. The time required for the osteotomy was reduced to half. There was no damage to underlying dura, cord or nerve structures. Conclusions: Ultrasonic Osteotome is a safe and effective ultrasonic bone cutting device that can be used to facilitate osteotomies in various types of cranial and spinal surgeries. This device allows precision bone cutting with minimal surrounding bone loss and obviates the risk associated with the use of high-speed burrs and oscillating saws
Miguel Peñarrocha-diago - One of the best experts on this subject based on the ideXlab platform.
-
Indirect sinus lift without bone graft material: Systematic review and meta-analysis.
Journal of clinical and experimental dentistry, 2015Co-Authors: Sara Pérez-martínez, Luis Martorell-calatayud, David Peñarrocha-oltra, Berta García-mira, Miguel Peñarrocha-diagoAbstract:A systematic literature review and a meta-analysis of indirect sinus lift without the use of bone graft material was performed. A PubMed search was made from January 2005 to January 2012 with keywords: "sinus lift", "Osteotome", "graft" and "maxillary sinus elevation". The inclusion criteria were: maxillary sinus lift technique with Osteotomes with a minimum follow-up period of 5 months after surgery without bone graft material. 11 articles were included. The mean gain in residual crestal bone height after maxillary sinus lift without bone graft material was 3,43 mm ± 0,09 (2,5 mm - 4,4 mm). The survival rate ranged from 94% to 100%. Placement of implants with sinus lift without bone graft material, is a valid surgical technique to gain residual crestal height and placed implants in an atrophic posterior maxillary with a crestal height from 5 to 9 mm. Key words:Sinus lift, Osteotome, graft, maxillary sinus elevation.
-
Benign paroxysmal vertigo secondary to placement of maxillary implants using the alveolar expansion technique with Osteotomes: a study of 4 cases.
The International journal of oral & maxillofacial implants, 2008Co-Authors: Miguel Peñarrocha-diago, Javier Rambla-ferrer, Vanesa Perez, Herminio Pérez-garriguesAbstract:The Osteotome method is an often-used technique of great utility in certain patients with maxillary bone atrophy. However, it has been associated with the provocation of benign paroxysmal positional vertigo (BPPV), which has been described as a consequence of working the implant bed with Osteotomes. During the placement of maxillary dental implants using the Osteotome technique, the trauma induced by percussion with the surgical hammer, along with hyperextension of the neck during the operation, can displace otoliths and induce BPPV. Four cases of BPPV occurring after the preparation of maxillary implant beds are presented. Treatment consists fundamentally of maneuvers to move the calcium carbonate crystals from their anomalous location in the semicircular canal to their correct place in the utricle.
