The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
Hyung Chae Yang - One of the best experts on this subject based on the ideXlab platform.
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histologic features of sublingual gland herniation through the Mylohyoid Muscle
International Journal of Clinical and Experimental Pathology, 2019Co-Authors: Hyung Chae YangAbstract:Objectives/Hypothesis: The purpose of this study was to document histologic features of the herniated sublingual gland (SLG) and investigate the histologic correlation between herniated SLG and plunging ranula. Methods: One hundred half-heads from 50 adult cadavers (21 females and 29 males) were included in this study. The presence of SLG herniation and the histologic features SLG were analyzed. The histologic features were analyzed according to the part: intraoral, junctional, and herniated parts. Hematoxylin and eosin (H&E), periodic acid Schiff reaction (PAS), and Alcian Blue (pH 2.5) staining were performed. Results: SLG herniation was found in 42 of 100 half-heads. Non-herniated SLG and the intraoral part of the herniated SLG were mainly composed of mucous acini and a few mixed acini. Junctional and herniated parts were mainly composed of serous acini and showed fatty change. PAS and Alcian blue staining showed that both acidic and neutral mucinous acini of junctional and herniated parts were decreased. However, there was no pseudo-epithelium at any site of herniation. Conclusions: The histologic features of herniated SLG are different according the portions. The herniated part showed fatty degeneration and the remaining acini were mainly serous. We cannot confer any correlation between plunging ranula and the herniated part of SLGs.
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A cadaveric study on Mylohyoid herniation of the sublingual gland
European Archives of Oto-rhino-laryngology, 2016Co-Authors: Hyung Chae Yang, Chang Seok Oh, In Hyuk ChungAbstract:The purpose of this study was to document the presence of a sublingual gland (SLG) herniating inferiorly through the Mylohyoid Muscle into the submandibular area. A total of 100 half-heads of 50 adult Korean cadavers were enrolled in this study. The floor of the mouth was dissected from the neck, and Mylohyoid Muscle patency and position of the sublingual gland were evaluated. Demographic factors of the donor and characteristics of the herniation were evaluated. Herniation was found in 29 (58.0 %) of the 50 cadavers or 42 of the 100 half-heads. Herniation was more frequently observed in females than in males (p = 0.009). However, no laterality was observed. Classifying the location of SLG herniation from the midpoint of the mandible to the hyoid bone into 3 regions, 32 (63 %) of herniations were found in the anterior one-third. No ranula formation was observed. The size and weight of normal glands tended to be larger than those of herniated glands, but no statistical significance was observed. An SLG hernia is a very common condition and is more frequently observed in females. As such, SLG herniation should be considered when a submental neck mass is evaluated.
Toshifumi Kumai - One of the best experts on this subject based on the ideXlab platform.
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role of proprioceptors in the Mylohyoid Muscle
Brain Research Bulletin, 1994Co-Authors: Kiyofumi Furusawa, Minoru Yamaoka, Katsuhiko Fujimoto, Toshifumi KumaiAbstract:Abstract Afferent discharges of the Mylohyoid Muscle branch during respiration were studied electrophysiologically in the rat. Afferent discharges from the Mylohyoid Muscle branch of the Mylohyoid nerve were found to be synchronized with respiration. Stretching of the Mylohyoid Muscle elicited afferent discharges of the Mylohyoid Muscle branch, suggesting that lengthening of the Mylohyoid Muscle caused electrical activity in the proprioceptors. When the central cut end of the Mylohyoid Muscle branch was stimulated electrically, reflex discharges were recorded from the EMG lead at the sternohyoid Muscle where it is innervated by the cervical nerve. The latency between the electrical stimulation and the action potential in the sternohyoid Muscle was 3–4 ms. Therefore, the Mylohyoid Muscle branch may transmit information to the sternohyoid Muscle regarding the stretching actions of the Mylohyoid Muscle resulting from movements of the hyoid bone.
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Muscle spindles in the Mylohyoid Muscle of rats
International Journal of Oral and Maxillofacial Surgery, 1992Co-Authors: Minoru Yamaoka, Kiyofumi Furusawa, Katsuhiko Fujimoto, Kousei Iguchi, Toshifumi KumaiAbstract:Abstract The Mylohyoid Muscle has several functions in relation to respiration, deglutition, and phonation, but these functions are not fully understood. The interaction of the Mylohyoid nerve and Muscle in 25 rats was studied by neurophysiologic and histologic methods. Stretching of the Muscle elicited electrical responses from the branch of the Mylohyoid nerve innervating the Mylohyoid Muscle, and stretch-sensitive receptors were demonstrated histologically in the Mylohyoid Muscle. This study indicates that the Mylohyoid Muscle plays an active role in functions such as swallowing, breathing, and phonation.
Dietbert Hahn - One of the best experts on this subject based on the ideXlab platform.
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functional mr imaging of submandibular herniation of sublingual tissues through a gap of the Mylohyoid Muscle in two cases of submandibular masses
European Radiology, 2005Co-Authors: M Keberle, S Eulert, A Relic, Dietbert HahnAbstract:Except for neoplasms, in symptomatic patients with submandibular swellings, gaps of the Mylohyoid Muscle may be the cause of herniations of sublingual tissues, such as fat and/or the sublingual gland. In two patients with a submandibular swelling, MRI with standard sequences including contrast enhancement was performed to exclude a neoplastic lesion. In addition, we performed a trueFISP sequence during modified Valsalva’s maneuver. In both patients, a neoplasm was excluded. Instead, the trueFISP sequence during the modified Valsalva’s maneuver showed submandibular herniation of sublingual tissues. If MRI of the floor of the mouth does not show a neoplasm, an additional functional MR investigation should be performed. Gaps of the Mylohyoid Muscle can be the cause of herniating sublingual tissues (similar to plunging ranulas). During the modified Valsalva’s maneuver, sublingual fat and/or gland can herniate and cause a symptomatic submandibular swelling. A coronal trueFISP sequence is particularly suited to demonstrate this.
Hayato Ohshima - One of the best experts on this subject based on the ideXlab platform.
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variation in arterial supply to the floor of the mouth and assessment of relative hemorrhage risk in implant surgery
Clinical Oral Implants Research, 2013Co-Authors: Yuji Katsumi, Ray Tanaka, Takafumi Hayashi, Taketo Koga, Ritsuo Takagi, Hayato OhshimaAbstract:Objectives Bleeding in the floor of the mouth during implant surgery is attributed to arterial injuries in the sublingual space: clinicians may injure the submental and sublingual arteries, which originate from the facial and lingual arteries, respectively. This study aimed to clarify the three-dimensional courses of submental and sublingual arteries and their topographic relation to the mandible. Materials and methods During the gross anatomy course at the Faculty of Dentistry and Graduate School, Niigata University (2009–2011), we investigated the relationship between the courses of submental and sublingual arteries and their dividing patterns of the Mylohyoid Muscle, sublingual gland, and mandible using 27 human cadavers. Results The courses of submental and sublingual arteries were divided into four patterns: (1) the sublingual space was supplied by the sublingual artery (type I: 63%), (2) it was supplied by both the sublingual and submental arteries (type II: 5.6%), (3) it was supplied by the submental artery without the sublingual artery (type III: 29.6%), and (4) type III without the deep lingual artery originated from the lingual artery (type IV: 1.8%). In type II, III, and IV, the submental artery perforates the Mylohyoid Muscle or takes a roundabout route to travel near the surface of the mandible. The percentage occurrence of arteries traveling between the sublingual gland and mandible in type II, III, and IV (55%) is higher than that in type I (8.8%). Conclusion Susceptibility of the submental artery in type II, III, and IV to injury during implant surgery is suggested.
Kiyofumi Furusawa - One of the best experts on this subject based on the ideXlab platform.
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The Distribution of Afferent Neurons in the Trigeminal Mesencephalic Nucleus and the Central Projection of Afferent Fibers of the Mylohyoid Nerve in the Rat
Somatosensory and Motor Research, 2009Co-Authors: Kouichi Yasuda, Kiyofumi Furusawa, Mikiko Tanaka, Minoru YamaokaAbstract:Horseradish peroxidase conjugated to wheatgerm agglutinin (HRP:WGA) was injected into the proximal cut ends of three branches of the Mylohyoid nerve in rats: the branch to the Mylohyoid Muscle (BrMh), the branch to the anterior belly of the digastricus Muscle (BrDg), and the cutaneous branch (BrCu). HRP-labeled cells were detected in the ipsilateral caudal portion of the trigeminal mesencephalic nucleus (Vmes) and the ipsilateral ventromedial division of the trigeminal motor nucleus, except when HRP:WGA was applied to the BrCu. Morphologically, all labeled Vmes cells were of the pseudounipolar type.Projections of the primary afferents of the BrMh were observed in the ipsilateral trigeminal nucleus caudalis, the upper cervical dorsal horns of laminae I -III, and the dorsolateral recticular formation (Rf), whereas the primary afferents of the BrDg terminated in the ipsilateral trigeminal nucleus principalis and Rf. These observations suggest that the role of the afferent inputs of the Mylohyoid Muscle diffe...
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role of proprioceptors in the Mylohyoid Muscle
Brain Research Bulletin, 1994Co-Authors: Kiyofumi Furusawa, Minoru Yamaoka, Katsuhiko Fujimoto, Toshifumi KumaiAbstract:Abstract Afferent discharges of the Mylohyoid Muscle branch during respiration were studied electrophysiologically in the rat. Afferent discharges from the Mylohyoid Muscle branch of the Mylohyoid nerve were found to be synchronized with respiration. Stretching of the Mylohyoid Muscle elicited afferent discharges of the Mylohyoid Muscle branch, suggesting that lengthening of the Mylohyoid Muscle caused electrical activity in the proprioceptors. When the central cut end of the Mylohyoid Muscle branch was stimulated electrically, reflex discharges were recorded from the EMG lead at the sternohyoid Muscle where it is innervated by the cervical nerve. The latency between the electrical stimulation and the action potential in the sternohyoid Muscle was 3–4 ms. Therefore, the Mylohyoid Muscle branch may transmit information to the sternohyoid Muscle regarding the stretching actions of the Mylohyoid Muscle resulting from movements of the hyoid bone.
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Muscle spindles in the Mylohyoid Muscle of rats
International Journal of Oral and Maxillofacial Surgery, 1992Co-Authors: Minoru Yamaoka, Kiyofumi Furusawa, Katsuhiko Fujimoto, Kousei Iguchi, Toshifumi KumaiAbstract:Abstract The Mylohyoid Muscle has several functions in relation to respiration, deglutition, and phonation, but these functions are not fully understood. The interaction of the Mylohyoid nerve and Muscle in 25 rats was studied by neurophysiologic and histologic methods. Stretching of the Muscle elicited electrical responses from the branch of the Mylohyoid nerve innervating the Mylohyoid Muscle, and stretch-sensitive receptors were demonstrated histologically in the Mylohyoid Muscle. This study indicates that the Mylohyoid Muscle plays an active role in functions such as swallowing, breathing, and phonation.
