The Experts below are selected from a list of 240 Experts worldwide ranked by ideXlab platform
Iwai Tohnai - One of the best experts on this subject based on the ideXlab platform.
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u shaped osteotomy around the Descending Palatine Artery to prevent posterior osseous interference for superior posterior repositioning of the maxilla in le fort i osteotomy
Journal of Craniofacial Surgery, 2015Co-Authors: Susumu Omura, Toshinori Iwai, Koji Honda, Naoki Shibutani, Koichi Fujita, Yosuke Yamashita, Hikaru Takasu, Shogo Murata, Iwai TohnaiAbstract:AbstractIn maxillary orthognathic surgery, superior repositioning of the maxilla is sometimes difficult, and removal of bony interference, especially around the Descending Palatine Artery (DPA), is very time-consuming in cases of severe maxillary impaction. Posterior repositioning of the maxilla for
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U-shaped Osteotomy Around the Descending Palatine Artery to Prevent Posterior Osseous Interference for Superior/Posterior Repositioning of the Maxilla in Le Fort I Osteotomy.
The Journal of craniofacial surgery, 2015Co-Authors: Susumu Omura, Toshinori Iwai, Koji Honda, Naoki Shibutani, Koichi Fujita, Yosuke Yamashita, Hikaru Takasu, Shogo Murata, Iwai TohnaiAbstract:AbstractIn maxillary orthognathic surgery, superior repositioning of the maxilla is sometimes difficult, and removal of bony interference, especially around the Descending Palatine Artery (DPA), is very time-consuming in cases of severe maxillary impaction. Posterior repositioning of the maxilla for
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Vital staining of palatal soft tissue in horseshoe Le Fort I osteotomy for superior repositioning of the maxilla.
The Journal of craniofacial surgery, 2015Co-Authors: Susumu Omura, Toshinori Iwai, Koji Honda, Naoki Shibutani, Koichi Fujita, Yosuke Yamashita, Hikaru Takasu, Shogo Murata, Iwai TohnaiAbstract:In maxillary orthognathic surgery, superior repositioning of the maxilla is sometimes difficult, and removal of the bony interference, especially around the Descending Palatine Artery, is very time-consuming in cases of severe maxillary impaction. A useful method introduced for superior repositioning of the maxilla is horseshoe-shaped osteotomy combined with Le Fort I osteotomy (horseshoe Le Fort I osteotomy). However, injury to the palatal soft tissue during horseshoe-shaped osteotomy may cause aseptic complications of the maxilla. Therefore, a safe method is required to prevent such injury to reduce the risk for aseptic necrosis. We describe here vital staining of palatal soft tissue in horseshoe Le Fort I osteotomy for safer superior repositioning of the maxilla.
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Use of a simple handmade retractor to protect the Descending Palatine Artery during removal of posterior osseous interferences for maxillary impaction in Le Fort I osteotomy.
The Journal of craniofacial surgery, 2013Co-Authors: Susumu Omura, Toshinori Iwai, Shogo Murata, Iwai TohnaiAbstract:For accurate superior or posterior repositioning of the maxilla in Le Fort I osteotomy, bone removal around the Descending Palatine Artery (DPA) and maxillary tuberosity is required. Because the most common site of hemorrhage in the Le Fort I osteotomy is the posterior maxilla, this bone removal provides surgeons to surgical frustration of DPA injury. When the DPA is injured during the bone removal and the ligation is performed, aseptic necrosis of the maxilla may occur. Therefore, we report the use of a simple handmade retractor to protect the DPA in Le Fort I osteotomy.
Susumu Omura - One of the best experts on this subject based on the ideXlab platform.
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u shaped osteotomy around the Descending Palatine Artery to prevent posterior osseous interference for superior posterior repositioning of the maxilla in le fort i osteotomy
Journal of Craniofacial Surgery, 2015Co-Authors: Susumu Omura, Toshinori Iwai, Koji Honda, Naoki Shibutani, Koichi Fujita, Yosuke Yamashita, Hikaru Takasu, Shogo Murata, Iwai TohnaiAbstract:AbstractIn maxillary orthognathic surgery, superior repositioning of the maxilla is sometimes difficult, and removal of bony interference, especially around the Descending Palatine Artery (DPA), is very time-consuming in cases of severe maxillary impaction. Posterior repositioning of the maxilla for
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U-shaped Osteotomy Around the Descending Palatine Artery to Prevent Posterior Osseous Interference for Superior/Posterior Repositioning of the Maxilla in Le Fort I Osteotomy.
The Journal of craniofacial surgery, 2015Co-Authors: Susumu Omura, Toshinori Iwai, Koji Honda, Naoki Shibutani, Koichi Fujita, Yosuke Yamashita, Hikaru Takasu, Shogo Murata, Iwai TohnaiAbstract:AbstractIn maxillary orthognathic surgery, superior repositioning of the maxilla is sometimes difficult, and removal of bony interference, especially around the Descending Palatine Artery (DPA), is very time-consuming in cases of severe maxillary impaction. Posterior repositioning of the maxilla for
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Vital staining of palatal soft tissue in horseshoe Le Fort I osteotomy for superior repositioning of the maxilla.
The Journal of craniofacial surgery, 2015Co-Authors: Susumu Omura, Toshinori Iwai, Koji Honda, Naoki Shibutani, Koichi Fujita, Yosuke Yamashita, Hikaru Takasu, Shogo Murata, Iwai TohnaiAbstract:In maxillary orthognathic surgery, superior repositioning of the maxilla is sometimes difficult, and removal of the bony interference, especially around the Descending Palatine Artery, is very time-consuming in cases of severe maxillary impaction. A useful method introduced for superior repositioning of the maxilla is horseshoe-shaped osteotomy combined with Le Fort I osteotomy (horseshoe Le Fort I osteotomy). However, injury to the palatal soft tissue during horseshoe-shaped osteotomy may cause aseptic complications of the maxilla. Therefore, a safe method is required to prevent such injury to reduce the risk for aseptic necrosis. We describe here vital staining of palatal soft tissue in horseshoe Le Fort I osteotomy for safer superior repositioning of the maxilla.
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Use of a simple handmade retractor to protect the Descending Palatine Artery during removal of posterior osseous interferences for maxillary impaction in Le Fort I osteotomy.
The Journal of craniofacial surgery, 2013Co-Authors: Susumu Omura, Toshinori Iwai, Shogo Murata, Iwai TohnaiAbstract:For accurate superior or posterior repositioning of the maxilla in Le Fort I osteotomy, bone removal around the Descending Palatine Artery (DPA) and maxillary tuberosity is required. Because the most common site of hemorrhage in the Le Fort I osteotomy is the posterior maxilla, this bone removal provides surgeons to surgical frustration of DPA injury. When the DPA is injured during the bone removal and the ligation is performed, aseptic necrosis of the maxilla may occur. Therefore, we report the use of a simple handmade retractor to protect the DPA in Le Fort I osteotomy.
S. Bahar - One of the best experts on this subject based on the ideXlab platform.
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The branches of the Descending Palatine Artery and their relation to the vomeronasal organ in Angora goats
Veterinarni Medicina, 2018Co-Authors: K. Besoluk, E. Eken, S. BaharAbstract:The aim of this study was to reveal the branches of the Descending Palatine Artery, and its relation to the vomeronasal organ in Angora goats. For this purpose, ten heads of adult Angora goats obtained from a slaughterhouse were used. The ramifications of the latex enjected Descending Palatine Artery and their vomeronasal organ-related findings were revealed by fine dissection and transverse sections. Arterial blood reached the caudally vomeronasal organ primarily via the sphenoPalatine Artery, and also cranially via a fine branch of the major pala- tine Artery by crossing the Palatine fissure. The average diameters of both the Descending Palatine Artery and its branches were thicker on the left side than on the right, and its ramifications were not variable in this species.
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The branches of the Descending Palatine Artery and their relation to the vomeronasal organ inAngoragoats
Veterinární Medicína, 2012Co-Authors: K. Besoluk, E. Eken, S. BaharAbstract:The aim of this study was to reveal the branches of the Descending Palatine Artery, and its relation to the vomeronasal organ inAngoragoats. For this purpose, ten heads of adultAngoragoats obtained from a slaughterhouse were used. The ramifications of the latex enjected Descending Palatine Artery and their vomeronasal organ-related findings were revealed by fine dissection and transverse sections. Arterial blood reached the caudally vomeronasal organ primarily via the sphenoPalatine Artery, and also cranially via a fine branch of the major Palatine Artery by crossing the Palatine fissure. The average diameters of both the Descending Palatine Artery and its branches were thicker on the left side than on the right, and its ramifications were not variable in this species.
Chirag D Gandhi - One of the best experts on this subject based on the ideXlab platform.
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Endovascular Management of Epistaxis Secondary to Dissecting Pseudoaneurysm of the Descending Palatine Artery Following Orthognathic Surgery.
Journal of vascular and interventional neurology, 2018Co-Authors: Muhammad H Niazi, Mohammad El-ghanem, Fawaz Al-mufti, Ethan Wajswol, Vincent Dodson, Ahmed Abdulrazzaq, Tamara Sami, Rolla Nuoman, Shahid Aziz, Chirag D GandhiAbstract:Orthognathic surgeries such as Le Fort I are widely used in clinical practice. Postoperative internal maxillary Artery pseudoaneurysm is a very rare complication, which can lead to significant postoperative bleeding. In this article, we report a case of early postoperative bleeding secondary to pseudoaneurysm following Le Fort I surgery with a novel endovascular treatment approach.
Etsuhide Yamamoto - One of the best experts on this subject based on the ideXlab platform.
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Determining the anatomy of the Descending Palatine Artery and pterygoid plates with computed tomography in Class III patients
Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery, 2009Co-Authors: Koichiro Ueki, Yukari Hashiba, Kohei Marukawa, Kiyomasa Nakagawa, Katsuhiko Okabe, Etsuhide YamamotoAbstract:Summary Purpose Understanding the anatomy of the pterygomaxillary junction region helps prevent blood loss in Le Fort I osteotomy. Here, we determined the location of the Descending Palatine Artery and the structure of the pterygomaxillary region. Patients and methods The study group consisted of 82 Japanese patients with mandibular prognathism and asymmetry, with and without maxillary retrognathism or asymmetry. A total of 164 sides were measured and divided into right versus left, men versus women, and bimaxillary osteotomy (B) versus mandibular osteotomy (S). Lateral and frontal cephalograms and computed tomography (CT) were analysed for all patients. The relationship between the cephalometric measurements and the measurements of the Descending Palatine Artery and pterygoid plate (PP) were assessed. Results There were no significant correlations between measurements of cephalograms and those of the Descending Palatine Artery and PPs. There were significant differences between right and left in lateral plate length ( p =0.0014) and thickness of PP ( p =0.0047). There were significant differences between men and women in right width of PP ( p =0.0034), right thickness of PP ( p =0.0063), left posterior length ( p =0.0196), and left thickness of PP ( p =0.0279). The B group had a shorter anterior length than the S group (right: p p =0.0027). Conclusion These results suggest that the location of the Descending Palatine Artery and the morphology of the PPs were not significantly associated with any cephalometric measurements. CT examination is necessary to recognize the anatomy of pterygomaxillary region and the exact positions of Descending Palatine Artery before Le Fort I osteotomy.
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Assessment of pterygomaxillary separation in Le Fort I Osteotomy in class III patients.
Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons, 2009Co-Authors: Koichiro Ueki, Yukari Hashiba, Kohei Marukawa, Kiyomasa Nakagawa, Katsuhiko Okabe, Shamiul Alam, Etsuhide YamamotoAbstract:Purpose To examine the separation of the pterygomaxillary region at the posterior nasal spine level after Le Fort I osteotomy in Class III patients. Patients and Methods The study group consisted of 37 Japanese patients with mandibular prognathism and asymmetry, with maxillary retrognathism or asymmetry. A total of 74 sides were examined. Le Fort I osteotomy was performed without a pterygoid osteotome, with an ultrasonic curette used to remove interference at the pterygomaxillary region. Postoperative computed tomography (CT) was analyzed for all patients. The separation of the pterygomaxillary region and the location of the Descending Palatine Artery were assessed. Results Although acceptable separation between the maxilla and pterygoid plates was achieved in all patients, an exact separation of the pterygomaxillary junction at the posterior nasal spine level was found in only 18 of 74 sides (24%). In 29 of 74 sides (39.2%), the separation occurred anterior to the Descending Palatine Artery. In 29 of 74 sides (39.2%), complete separation between the maxilla and lateral and/or medial pterygoid plate was not achieved, but lower level separation of the maxilla and pterygoid plate was always complete. The maxillary segments could be moved to the postoperative ideal position in all cases. Conclusion Le Fort I osteotomy without an osteotome does not always induce an exact separation at the pterygomaxillary junction at the posterior nasal spine level, but the ultrasonic bone curette can remove the interference between maxillary segment and pterygoid plates more safely.
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Le Fort I osteotomy using an ultrasonic bone curette to fracture the pterygoid plates
Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery, 2004Co-Authors: Koichiro Ueki, Kohei Marukawa, Kiyomasa Nakagawa, Etsuhide YamamotoAbstract:Summary Purpose The purpose of this study was to evaluate the advantageous use of an ultrasonic bone curette and to assess the mobilization of the pterygoid process after a Le Fort I osteotomy. Material and methods 14 Japanese adults (ranging in age from 17 to 30 years, mean 22.4) with jaw deformities diagnosed as mandibular prognathism or bimaxillary asymmetry underwent Le Fort I osteotomy with bilateral sagittal split ramus osteotomy or intraoral vertical ramus osteotomy. During the Le Fort I osteotomy, the Sonopet UST-2000™ ultrasonic bone curette was used to fracture the pterygoid process slightly above the level of the maxillary osteotomy without damaging the Descending Palatine Artery or other blood vessels and nerves. After surgery, the pterygoid process osteotomy and its mobility were evaluated from three-dimensional computed tomographic images. Results In all cases, the mobility of the pterygoid process could be achieved by using the device safely with minimal bleeding and no notable complications. The maxillary segment could be fixed in an ideal position and in all 14 cases, an ideal profile was achieved. Conclusion Ultrasonic bone curette offers a safe procedure for performing pterygoid process fractures without damaging the surrounding tissue such as the Descending Palatine Artery.