The Experts below are selected from a list of 225 Experts worldwide ranked by ideXlab platform
Hom-lay Wang - One of the best experts on this subject based on the ideXlab platform.
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what is the safety zone for palatal soft tissue graft harvesting based on the locations of the Greater Palatine artery and Foramen a systematic review
Journal of Oral and Maxillofacial Surgery, 2019Co-Authors: Lorenzo Tavelli, Shayan Barootchi, Andrea Ravida, Tae Ju Oh, Hom-lay WangAbstract:Purpose Palatal soft tissue graft harvesting is a common procedure in periodontal and implant dentistry. However, most of the complications after this procedure are associated with the underestimation of anatomic structures, such as the Greater Palatine artery (GPA). Therefore, the aim of this study was to provide guidelines for a safety zone for palatal harvesting. Materials and Methods A systematic search was conducted to identify cadaveric and computed tomography (CT) or cone beam CT studies assessing the location of the Greater Palatine Foramen (GPF) and the path of the GPA in relation to the maxillary teeth. The effect of age, gender, and cadaveric and CT or cone beam CT studies on the location of the GPF and on the course of the GPA also was assessed. Results This systematic review included 26 studies, investigating 5,768 hemipalates. The most common location of the GPF was in the midpalatal aspect of the third molar (57.08%). As it traverses the palate anteriorly, the distance from the GPA to the maxillary teeth gradually decreases, except in the second premolar region, where it has the tendency to increase (13.8 ± 2.1 mm). The least distance from the GPA to the teeth was found in the canine area (9.9 ± 2.9 mm), whereas the greatest distance was in the second molar region (13.9 ± 1 mm). A safety zone for palatal harvesting was proposed based on the anatomic findings. Conclusions This study provides guidelines for identifying the position of the GPF and defines a safety zone for harvesting a free gingival graft or connective tissue graft, minimizing the risk of GPA injury.
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the accuracy of identifying the Greater Palatine neurovascular bundle a cadaver study
Journal of Periodontology, 2011Co-Authors: Dawlat G Hasso, Chu Yuan Yeh, Daylene J M Leong, Hsun Liang Chan, Hom-lay WangAbstract:Background: The palate is a common site for harvesting subepithelial connective tissue grafts (SCTG). The size of SCTG that can be harvested is dictated by the position of the Greater Palatine neurovascular bundle (GPB). The aims of this cadaver study are to assess the accuracy of predicting the location of the GPB on study models and to evaluate anatomic factors that might influence the predictability.Methods: Eleven fully dentate or partially edentulous maxillary cadavers were used. Study models were fabricated after the Greater Palatine Foramen was identified. The GPB was recognized after dissection, from which the distance to the cemento-enamel junction of the first molar and premolar was measured. Eight periodontists and twelve periodontal residents were asked to estimate the location of the GPB on the study models and the same measurements were taken. Comparisons of the estimated and true GPB position were performed. The correlation between the palatal vault height and the variability of detecting t...
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.
Aysa Ayali - One of the best experts on this subject based on the ideXlab platform.
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cone beam computed tomography evaluation of the soft tissue thickness and Greater Palatine Foramen location in the palate
Journal of Clinical Periodontology, 2015Co-Authors: Hasan Guney Yilmaz, Fatma Boke, Aysa AyaliAbstract:Aim The aim of this study was to evaluate the palatal mucosa thickness and Greater Palatine Foramen location using cone-beam computerized tomography (CBCT). Materials and Methods Cone-beam computerized tomography images of 345 patients were measured. The relationship between palate vault depth and angle between the alveolar bone and palatal plane (PA) was evaluated. Differences in the palatal mucosal thickness according to age, gender and tooth site were evaluated. Results The mean palatal mucosal thickness from the second molar to the canine teeth were 3.7, 3.3, 3.7, 3 and 3 mm, respectively. The palatal mucosal thickness at the second molar and second premolar was statistically different from those at other zones. There was no correlation between the palatal junction angle and the palatal depth. Greater Palatine Foramen was observed at the level of third molar tooth, between third and second molar, second molar 63%, 31% and 6% in men and 56%, 36% and 8% in women respectively. Conclusions The second premolar to second molar zone was considered a suitable graft site based on the mean palatal mucosal thickness.
Peterjohn Wormald - One of the best experts on this subject based on the ideXlab platform.
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pterygoPalatine fossa infiltration through the Greater Palatine Foramen where to bend the needle
Laryngoscope, 2006Co-Authors: Richard G Douglas, Peterjohn WormaldAbstract:Objective: In the literature, there has been controversy regarding the length of the Greater Palatine canal. If the pterygoPalatine fossa is infiltrated in an attempt to reduce bleeding during sinus surgery, this information is important to be able to place local anesthetic with maximal effect and the least likelihood of complications. Study Design: The authors conducted a prospective cadaver-based study using high-definition computed tomography (CT) scans. Methods: Twenty-two cadaver heads were CT scanned and the Greater Palatine canal length, pterygoPalatine fossa height, and thickness of the soft tissue in the roof of the mouth were measured on parasagittal images using the CT scanner workstation. Results: The mean length of the Greater Palatine canal was 18.5 mm (95% confidence interval [CI] = 17.9–19.1) and the mean height of the pterygoPalatine fossa was 21.6 mm (95% CI = 20.7–22.5). The mean thickness of the soft tissue in the roof of the mouth overlying the Foramen of the Greater Palatine canal was 6.9 mm (95% CI = 6.2–7.6). Conclusion: To perform an effective infiltration of the pterygoPalatine fossa, the needle should be bent at 25 mm from the tip at an angle of 45°.
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.
