The Experts below are selected from a list of 201 Experts worldwide ranked by ideXlab platform
Rod J. Oskouian - One of the best experts on this subject based on the ideXlab platform.
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New supplemental landmark for the Greater Palatine foramen as found deep to soft tissue: application for the Greater Palatine Nerve block
Surgical and Radiologic Anatomy, 2017Co-Authors: Joe Iwanaga, Vlad Voin, Allen Ali Nasseh, Junta Kido, Teppei Tsukiyama, Yasuhiko Kamura, Tsuyoshi Tanaka, Christian Fisahn, Fernando Alonso, Rod J. OskouianAbstract:Purpose Many researches have investigated the morphology of the Greater Palatine foramina using dry skulls and cone-beam computed tomography. In most studies, some structures in the hard tissue have been measured and statistically analyzed. However, none of the studies has analyzed this foramen in regard to its location with overlying soft tissues, which is so clinically relevant. Therefore, this study was performed to provide the knowledge about relationship between the Greater Palatine foramen and foveola palatina for a better understanding of dental procedures such as Greater Palatine Nerve block. Methods Thirty sides, from fifteen fresh cadaveric heads, were used in this study. The specimens were derived from eight males and seven females. A 27-gauge needle was inserted into the fossa, which was palpated at the edge of a dental mirror at a 45° angle to the occlusal plane and parallel to the sagittal plane. The anteroposterior distance, which was parallel to the midline, between the penetration site and foveola palatina was measured. Results All the penetrations advanced to the Greater Palatine foramen. The distances ranged from 2.0 to 8.3 mm on right sides, and 1.1 to 8.2 mm on left sides, respectively. Conclusion The results of this study could help dentists identify the correct location of the Greater Palatine foramen with a supplemental landmark.
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New supplemental landmark for the Greater Palatine foramen as found deep to soft tissue: application for the Greater Palatine Nerve block.
Surgical and radiologic anatomy : SRA, 2017Co-Authors: Joe Iwanaga, Vlad Voin, Allen Ali Nasseh, Junta Kido, Teppei Tsukiyama, Yasuhiko Kamura, Tsuyoshi Tanaka, Christian Fisahn, Fernando Alonso, Rod J. OskouianAbstract:Purpose Many researches have investigated the morphology of the Greater Palatine foramina using dry skulls and cone-beam computed tomography. In most studies, some structures in the hard tissue have been measured and statistically analyzed. However, none of the studies has analyzed this foramen in regard to its location with overlying soft tissues, which is so clinically relevant. Therefore, this study was performed to provide the knowledge about relationship between the Greater Palatine foramen and foveola palatina for a better understanding of dental procedures such as Greater Palatine Nerve block.
Joe Iwanaga - One of the best experts on this subject based on the ideXlab platform.
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New supplemental landmark for the Greater Palatine foramen as found deep to soft tissue: application for the Greater Palatine Nerve block
Surgical and Radiologic Anatomy, 2017Co-Authors: Joe Iwanaga, Vlad Voin, Allen Ali Nasseh, Junta Kido, Teppei Tsukiyama, Yasuhiko Kamura, Tsuyoshi Tanaka, Christian Fisahn, Fernando Alonso, Rod J. OskouianAbstract:Purpose Many researches have investigated the morphology of the Greater Palatine foramina using dry skulls and cone-beam computed tomography. In most studies, some structures in the hard tissue have been measured and statistically analyzed. However, none of the studies has analyzed this foramen in regard to its location with overlying soft tissues, which is so clinically relevant. Therefore, this study was performed to provide the knowledge about relationship between the Greater Palatine foramen and foveola palatina for a better understanding of dental procedures such as Greater Palatine Nerve block. Methods Thirty sides, from fifteen fresh cadaveric heads, were used in this study. The specimens were derived from eight males and seven females. A 27-gauge needle was inserted into the fossa, which was palpated at the edge of a dental mirror at a 45° angle to the occlusal plane and parallel to the sagittal plane. The anteroposterior distance, which was parallel to the midline, between the penetration site and foveola palatina was measured. Results All the penetrations advanced to the Greater Palatine foramen. The distances ranged from 2.0 to 8.3 mm on right sides, and 1.1 to 8.2 mm on left sides, respectively. Conclusion The results of this study could help dentists identify the correct location of the Greater Palatine foramen with a supplemental landmark.
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New supplemental landmark for the Greater Palatine foramen as found deep to soft tissue: application for the Greater Palatine Nerve block.
Surgical and radiologic anatomy : SRA, 2017Co-Authors: Joe Iwanaga, Vlad Voin, Allen Ali Nasseh, Junta Kido, Teppei Tsukiyama, Yasuhiko Kamura, Tsuyoshi Tanaka, Christian Fisahn, Fernando Alonso, Rod J. OskouianAbstract:Purpose Many researches have investigated the morphology of the Greater Palatine foramina using dry skulls and cone-beam computed tomography. In most studies, some structures in the hard tissue have been measured and statistically analyzed. However, none of the studies has analyzed this foramen in regard to its location with overlying soft tissues, which is so clinically relevant. Therefore, this study was performed to provide the knowledge about relationship between the Greater Palatine foramen and foveola palatina for a better understanding of dental procedures such as Greater Palatine Nerve block.
Thomas A. Tami - One of the best experts on this subject based on the ideXlab platform.
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Surgical management of lesions of the sphenoid lateral recess.
American journal of rhinology, 2006Co-Authors: Thomas A. TamiAbstract:BACKGROUND Pneumatization of the sphenoid sinus occasionally includes an extensive lateral recess creating an area beneath the temporal lobe that is relatively inaccessible to surgical intervention. Pathology in this anatomic location presents special surgical and therapeutic challenges. Recently, several authors have described the endoscopic transpterygoPalatine fossa approach to this anatomic region. This approach is associated with minimal morbidity while providing direct endoscopic surgical access for managing a variety of disease processes in this region. METHODS This study presents eight cases requiring this approach or a modification of this approach. Six patients presented with temporal lobe meningoencephaloceles with cerebrospinal fluid rhinorrhea. Each case was managed successfully through this surgical approach. RESULTS One patient experienced transient postoperative palatal anesthesia due to injury to the Greater Palatine Nerve and another complained of ipsilateral dry eye postoperatively. Two other patients had neoplasms (inverting papilloma and chondrosarcoma), which were successfully addressed through this technique. There were no postoperative complications in these patients. CONCLUSION We have previously described the relationships of neural and vascular structures in this anatomic region. This article will review these relationships as they pertain to this surgical approach and will discuss the indications, techniques, and surgical outcomes in this series of patients. This approach is a valuable addition to the endoscopic armamentarium of the experienced endoscopic surgeon.
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Endoscopic anatomy of the pterygoPalatine fossa
Operative Techniques in Otolaryngology-Head and Neck Surgery, 2006Co-Authors: Melissa Mccarty Statham, Thomas A. TamiAbstract:Traditional approaches to the pterygoPalatine fossa have required invasive techniques that result in significant patient morbidity. The advent of endoscopic endonasal surgery overcomes many of the limitations needed to reach the relatively inaccessible pterygoPalatine fossa. We describe our endoscopic technique to access this region, particularly noting the neurovascular anatomy encountered intraoperatively. A medial-to-lateral dissection to approach the pterygoPalatine fossa appears to be simpler to perform and offers shorter operating times when compared with a lateral-to-medial approach. Careful dissection of the Greater Palatine Nerve from its bony canal allows its lateral mobilization, and minimizes potential injury and postoperative palatal hypesthesia. Sacrifice of the vidian Nerve may result in minimal deficits.
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An endoscopic study of the Greater Palatine Nerve.
American journal of rhinology, 2004Co-Authors: Jonathan W. Mellema, Thomas A. TamiAbstract:BACKGROUND Using an endoscopic approach, lateral sphenoid air cells and terminal branches of the internal maxillary artery often can be accessed through the pterygomaxillary fossa: however, injury to the Greater Palatine Nerve (GPN) can occur if the anatomy of this region is not understood clearly. This study was undertaken to define the pathway of the GPN and to identify landmarks useful in preventing its injury. METHODS Six cadaveric heads were used to endoscopically dissect and examine 11 pterygomaxillary fossae. An additional latex-injected cadaveric head was sectioned coronally and dissected bilaterally. The relationships between the vascular, neurological and bony structures and foramena were noted and described. RESULTS All specimens studied maintained consistent relationships. The sphenoPalatine and posterior nasal arteries cross nearly perpendicular and just superficial to the GPN. The GPN traveled anteriorly and inferiorly to reach the Greater Palatine foramen. The lateral wall of the canal ranged from a thin bony covering to complete dehiscence and was thinnest as it crossed the inferior turbinate and approached the foramen. The foramen rotundum was located lateral and superior to the sphenoPalatine foramen near the roof of the maxillary sinus. CONCLUSION When surgically approaching the pterygomaxillary fossa, injury to the GPN is avoidable by thorough knowledge of anatomy and awareness of the described landmarks.
Mossad Abdelazees - One of the best experts on this subject based on the ideXlab platform.
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addition of dexmedetomidine to bupivacaine for Greater Palatine Nerve block prolongs postoperative analgesia after cleft palate repair
European Journal of Anaesthesiology, 2010Co-Authors: Gihan Obayah, Amira Refaie, Ossama Aboushanab, Neamat Ibraheem, Mossad AbdelazeesAbstract:Background and objectiveThe effect of dexmedetomidine on the duration of sensory blockade has not been studied in humans. We evaluated the effect of adding dexmedetomidine to bupivacaine on the duration of postoperative analgesia in children who underwent repair of a cleft palate.MethodsThirty child
Suguru Kimoto - One of the best experts on this subject based on the ideXlab platform.
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Maxillary sensory Nerve responses induced by different types of dentures
Journal of prosthodontic research, 2012Co-Authors: Suguru Kimoto, Hidenori Yamaguchi, Nana Ito, Yoshio Nakashima, Nobuyuki Ikeguchi, Yasuhiko KawaiAbstract:Abstract Purpose The purpose of this study was to investigate whether different types of dentures induced different responses to stimulations in sensory Nerve underlying the denture-supporting mucosa using current perception threshold (CPT). Materials and methods The study population comprised 45 complete denture wearers with a mean age of 69.7 years (CD), 30 partial denture wearers (PD) with a mean age of 67.1 years, and 40 dentulous participants with a mean age of 69.0 years (Dent). Current perception threshold (CPT) on the Greater Palatine Nerve at 2000Hz, 250Hz, and 5Hz, corresponding to A-beta, A-delta, and C fibers respectively, were measured by the Neurometer ® NS3000 device. The differences CPTs among CD, PD, and Dent groups were analyzed by Kruskal–Wallis test and Mann–Whitney U test with adjusting the multiple comparisons' inflation of type 1 error rate by a Bonferroni correction. Results CPTs of CD, PD, and Dent group at 2000Hz were 61.5±45.8, 53.5±25.3, 33.0±11.4 (10 −2 mA) respectively. CPTs of CD, PD, and Dent group at 250Hz were 29.2±28.2, 20.1±13.2, 14.3±5.9 (10 −2 mA) respectively. CPTs of CD, PD, and Dent group at 5Hz were 28.9±23.4, 17.8±12.2, 12.2±5.6 (10 −2 mA) respectively. The CPTs at all frequencies increased in the following order: Dent p p p Conclusion The different types of dentures induce different responses to stimulations in the sensory Nerve underlying the denture-supporting mucosa.
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Asymptomatic hypoesthesia of the maxillary alveolar ridge in complete denture wearers.
Journal of oral rehabilitation, 2008Co-Authors: Suguru Kimoto, Kyoko Ogura, Hidenori Yamaguchi, Saito T, Jocelyne S. Feine, H. Sasai, Yuichi Matsumaru, Kihei KobayashiAbstract:This study was carried out to investigate the effect of compression induced by complete dentures on the function of the Nerves underlying the dentures. The influence of compression induced by complete dentures on Nerve function was analysed using current perception threshold (CPT) in 33 complete denture wearers aged 50-80 at Nihon University School of Dentistry (Matsudo, Japan). Based on the age range of the complete denture group, dentate subjects were selected as a control. Because the group characteristics (such as subject age, gender, body mass index) and oral mucosal thickness were not matched, a multiple regression analysis was used to adjust for the influence of heterogeneous characteristics on the CPT. Statistically significant differences were found between subject groups for the nasoPalatine and the Greater Palatine Nerve. The results of the study were that complete denture wearers experience asymptomatic hypoesthesia mainly affecting the nasoPalatine and Greater Palatine Nerves, but not the infraorbital Nerve.
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Perception thresholds for electrical stimulation of the palatal mucosa.
International Journal of Prosthodontics, 2007Co-Authors: Kyoko Ogura, Hidenori Yamaguchi, Suguru Kimoto, Kihei KobayashiAbstract:PURPOSE: To define the normative ranges of the Current Perception Threshold (CPT) of the palatal mucosa and to correlate it with the subjects' attributes. MATERIALS AND METHODS: A group of 129 informed healthy subjects consented to participate in the study. A Neurometer NS3000 device was used to evaluate the CPTs of the nasoPalatine Nerve (NPN) and the Greater Palatine Nerve (GPN) by using 2000-, 250-, and 5-Hz stimulations. After confirming the relationships with regard to gender, age, weight, height, alcohol consumption, duration of sleep, weight percentage of water content, smoking, and CPT, the normative ranges of the CPT measurements were obtained. RESULTS: Correlations were observed between age and CPTs obtained with the 2000- and 250-Hz stimulations of the GPN. The CPTs of the GPN were higher than those of the NPN. With the exception of the 5-Hz stimulation of the NPN, the CPTs in men were higher than those in women; however, the within- and between-site ratios exhibited no differences between the male and female subjects. No significant effects of smoking and alcohol consumption on CPT were observed. Range analysis revealed an increase in the CPTs as the frequency increased from 5 to 250 to 2,000 Hz. Within-site ratio analysis revealed increasing and spreading CPT ratios in the following order: 250/5 Hz, 2000/250 Hz, and 2,000/5 Hz. In the order of 5-, 250-, and 2000-Hz stimulations, decreasing ratios were observed for the between-site ratio analysis. CONCLUSION: This study provides useful diagnostic criteria for CPTs in the palatal mucosa.
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Reliability of the measurement of current perception thresholds in the palatal mucosa
Nihon Hotetsu Shika Gakkai Zasshi, 2006Co-Authors: Kyoko Ogura, Kihei Kobayashi, Hidenori Yamaguchi, Suguru Kimoto, Saito TAbstract:PURPOSE: The purpose of this study was to investigate the possibility of applying measurement of the Current Perception Threshold (CPT) to the oral mucosa. METHODS: Forty healthy volunteers (20 males and 20 females; mean age, 29.5 +/- 5.1 years) were recruited for the study. CPT measurements were performed over the nasoPalatine Nerve area and Greater Palatine Nerve area with 5,250 and 2000 Hz electrical stimulation using the Neurometer NS3000. The CPTs were measured on three separate days, and each measurement was carried out once a day by a single operator. RESULTS: Each of the electrical stimulations of 5,250 and 2000 Hz had a specific CPT. There were no significant differences in the CPT values measured over the three days. The CPTs were lower in the females than in the males. There were no significant differences in the CPTs in the Greater Palatine Nerve area between the right and the left side. No order effect was observed on the CPTs in the Greater Palatine Nerve area of either side in the first and second measurements. The intraclass correlation coefficient of the CPT measurements was as high as 0.80. CONCLUSION: It was concluded based on the high reliability of the measurements obtained, that CPT measurement can be applied to the oral mucosa.
