• Title/Summary/Keyword: 구강점막

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DISTRIBUTION OF NITRIC OXIDE SYNTHASE ISOFORMS IN PERIORAL EXOCRINE GLANDS IN RATS (흰쥐 구강주위 외분비선에서 산화질소 합성동위효소의 분포)

  • Jeong, Jong-Cheol;Kim, Sun-Hun;Ryu, Sun-Youl
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.26 no.3
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    • pp.284-292
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    • 2000
  • 내인성 산화질소는 산화질소 합성효소에 의하여 합성되며 여러 분비선에서 다양한 기능을 하리라 추측되고 있다. 구강주위 외분비선은 형태적으로 유사하나 분비물의 성분과 분비량은 서로 달라 이들 조직에서 산화질소 동위효소의 분포와 기능을 추론함은 흥미 있는 일이다. 또한 구강주위 외분비선과 분비선의 지배신경의 산화질소동위효소의 분포에 관한 보고는 희박하다. 본 연구는 흰쥐구강 주위 외분비조직, 즉 3대 타액선, 혀의 소타액선, 누선 그리고 구강점막의 피지선과 지배신경 및 신경절에서 eNOS와 nNOS의 분포를 면역조직화학 방법에 의하여 관찰하여 다음의 결과를 얻었다. nNOS는 악하선신경절, 대타액선의 분비도관 주위의 신경절후신경섬유, 혀의 소타액선 주위의 신경절후섬유, 누선에서 강한 양성반응을 보였다. nNOS는 대타액선과 근상피세포에서 중등도의 양성반응을 보였고 이중 이하선에서 반응이 가장 약하였으며, 피지선의 분비관에서 약한 반응을 보였다. 그러나 상교감신경절과 삼차신경절, 소타액선의 분비관 및 대,소 타액선의 선포에서는 반응이 매우 미약하거나 관찰되지 않았다. eNOS는 혈관의 내피세포와 대타액선의 분비관, 누선의 분비관 및 선포에서 강한 양성 반응을 보였고, 근상피세포에서 중등도의 반응을, 피지선에서 약한 반응을 보였다. 모든 신경절과 신경섬유에서 eNOS의 반응은 음성이었고 타액선의 일부 선포에서는 미약한 면역반응을 보였다. 이상의 결과 eNOS에 의해 합성된 NO는 악안면영역의 외분비선에서 혈류량의 조절과 분비도관의 기능 조절에 관여하고, nNOS에 의한 NO는 외분비선의 자율신경계에서 신경전달물질로의 기능과 분비도관에서의 분비기능 조절에 관여함을 시사하였다.

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KOSTMANN SYNDROME AND MYELODYSPLASTIC SYNDROME WITH DENTAL PROBLEM : A CASE REPORT (Kostmann 증후군과 골수이형성 증후군 환아의 증례보고)

  • Hyun, Hong-Keun
    • The Journal of Korea Assosiation for Disability and Oral Health
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    • v.4 no.1
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    • pp.32-36
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    • 2008
  • Congenital neutropenia or Kostmann syndrome is an inherited disorder manifesting in infancy and characterized by severe bacterial infections. The myelodysplastic syndromes(MDS) are a group of stem cell disorders characterized by a reduction in one or more elements of the peripheral blood. This paper reports a case of Kostmann syndrome and MDS with oral complications such as generalized gingivitis and periodontitis, oral mucosal ulcer, petechiae. The features of these syndromes are reviewed and their oral manifestations and significance to dental management outlined.

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Pathophysiology of Oral Mucositis induced by Anticancer Therapy (항암치료 후 발생하는 구강 점막염의 병태생리)

  • Yoon, Jung-Hoon;Choj, Jong-Hoon
    • Journal of Oral Medicine and Pain
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    • v.25 no.4
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    • pp.365-369
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    • 2000
  • Oral mucositis or stomatitis produced by stomatotoxic chemotherapy and/or radiation therapy are painful, restrict oral intake and, importantly, act as sites of secondary infection and potals of entry for the endogenous oral microflora often leading to bacteremias or sepsis. A number of clinical observations and studies of animal model suggests a pathophysiological complexity in the development of mucositis. The condition appears to represent a sequential interaction of the oral mucosal cells and tissues, pro-inflammatory cytokines, and local environmental factors in the mouth. This article discussed and reviewed biological process of the mucositis and, the role of cytokines as initiators and amplifiers of the process. The recognition that the pathophysiology of mucositis is a multifactorial process has presented opportunities for intervention based upon biological attenuation.

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White lesions of the oral mucosa (임상가를 위한 특집 3 - 구강점막의 백색 병소)

  • Yoon, Hye-Jung
    • The Journal of the Korean dental association
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    • v.50 no.12
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    • pp.732-742
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    • 2012
  • White lesions of the oral mucosa are a common clinical finding that often present first to general dentist. Some white lesion may have possibility of malignancy. Leukoplakia is the most common "potentially malignant disorder" of the oral mucosa. Leukoplakia is at present defined as "A white plaque of questionable risk having excluded (other) known disease or disorders that carry no increased risk for cancer.". Therefore, it is important for general dentist to be familiar to clinical differential diagnosis of leukoplakia from the known white lesions such as candidiasis, lichen planus, leukoedema, frictional keratosis, and so on. It is also important to decide whether such lesions require further investigation through the biopsy. As a result of biopsy, the presence of epithelial dysplasia in the leukoplakia is still the strongest predictor of future malignant transformation. In this article, oral white lesions that must be differentiated from potentially malignant disorders or early invasive squamous cell carcinoma will be reviewed together with presenting clinical cases.

Ulcerative Conditions of Oral Mucosa (임상가를 위한 특집 2 - 구강점막의 궤양성 병소)

  • Kim, Hyun Sil
    • The Journal of the Korean dental association
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    • v.50 no.12
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    • pp.727-731
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    • 2012
  • An ulcer is defined as loss of epithelium. Although many oral ulcers have similar clinical appearances, their etiologies encompass many disorders, including trauma, infection, immunologic disease, and malignant oral cancer. Oral squamous cell carcinoma(SCC) occupying about 90% of oral cancer, usually manifests as unhealed ulcer over 2 weeks. Oral SCC can metastasize to the cervical neck lymph node, and therefore the surgical therapeutic modality for oral SCC could encompass the neck node dissection as well as wide excision for primary lesions, which should leave the post-operative complication of functional damage like dysphagia and facial deformity. Therefore, it is important to discriminate oral SCC from other ulcerative conditions to make a prompt management. The knowledge for the pathogenesis of the ulcerative lesions could help the clinicians to understand the differences of clinical features and to practice an appropriate therapeutics.

Study on Exfoliative Cytology of Keratinization and Morphology of Oral Mucosal Epithelium in Adult Diabetic Patients (당뇨병 환자에서의 구강점막각화도 및 세포상에 대한 박리세포학적 연구)

  • 안대남;김종열
    • Journal of Oral Medicine and Pain
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    • v.6 no.1
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    • pp.83-90
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    • 1981
  • This study was undertaken to study the changes of epithelium of oral mucosa caused by diabetic disease in terms of keratinization and morphology of epithelial cells of oral mucasa, and to diagnose the oral diseases caused by systemic origns in terms of oral exfoliative cytology as a diagnostic tool. The author has studied the changes of epithelial cells on the cheek mucosa and upper antirior gingiva of 20 adult diabetic patients by Oral Exfoliative Cytology. And 50 healthy adults were selected as control group. The cytologic smears were stained by Papanicolaou method. The results were as follows : 1. In diabetic patient's cheek mucosa, Yellow staining cells were reveald as 11.8%, which was higher than the control group(4.2%). 2. In diabetic patients' upper anterior gingiva, Yellow staining cells were reaveale as 12.4%, which was lower than the control group(68.2%) 3. The changes of nucleus and cytoplasmic changes were not significantly different in diabetic patients and control group.

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Effects of Gums on Physical Properties of Oral Adhesive Tablets (Gum 종류에 따른 구강점막 부착정제의 물성 비교)

  • Chung, Bee-Hwan;Cha, Bong-Jin;Kwon, Jong-Won;Yang, Joong-Ik;Min, Shin-Hong
    • Journal of Pharmaceutical Investigation
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    • v.18 no.1
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    • pp.5-8
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    • 1988
  • Physical properties of oral adhesive tablets prepared with four kinds of gums for topical or systemic drug delivery were investigated. Oral adhesive tablets containing 5mg of brilliant blue(BB) were prepared from direct compression. Viscosity of 2% gum solutions, water absorption, fracture resistance, stickiness of tablets, and dissolution of BB in pH 6.8 dissolution medium were tested. Acacia showed good stickiness and fracture resistance, and tragacanth showed good retarding effect on the release of BB from tablets. Therefore, tablets with varing ratios of acacia and tragacanth were prepared and their physical properties were examined. In conclusion, it was possible to obtain some adequate properties by compounding acacia and tragacanth.

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Morphologic Study on a Vascularized Composite Flap for Tracheal Reconstruction in Rabbit:III. Immunohistochemical Study (토끼 기관에 이식한 혈행성 연골막-구강점막 복합피판의 형태학적 연구 : III. 면역조직화학적 연구)

  • 김은서
    • Korean Journal of Bronchoesophagology
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    • v.3 no.2
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    • pp.253-260
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    • 1997
  • Successful regeneration of a cartilage framework using perichondrium has been reported by several authors but there are some arguments surrounding mucosal regeneration. Some authors report that regeneration of mucosa is completed by ingrowth from neighboring tissue but others insist that it occurs via metaplasia from the squamous epithelium. This study was designed to investigate the differences, especially in mucosal regeneration between nonvascularized and vascularized flaps via immunohistochemical study. A morphologic study was carried out to elucidate the characteristics o( the regenerated mucosa which was sutured on the vascularized perichondrium and fabricated in a rabbit ear. A nonvascularized perichondrial-mucosal composite flap with the same dimension was transferred in the control group. BrdU was labelled on both normal mucosa and grafted mucosa in the experimental group without my statistically significant differences. In cytokeratin stain, it was regarded that mucosal coverage of the control group occurred by ingrowth from the neighboring mucosa. It can be conceived that metaplasia of the grafted mucosa occurs in a vascularized composite flap transferred group.

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A Review of Etiopathogenesis of Burning Mouth Syndrome (구강작열감증후군의 병인론과 병태생리에 대한 고찰)

  • Lim, Hyun-Dae;Kang, Jin-Kyu;Lee, You-Mee
    • Journal of Oral Medicine and Pain
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    • v.35 no.1
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    • pp.41-47
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    • 2010
  • Burning mouth syndrome(BMS) is a chronic oral pain and a symptom complex disorder usually unaccomplished by mucosal lesion or other clinical and laboratory signs of organic disease. BMS is characterized by a spontaneous burning sensation that mainly affects middle-aged and postmenopausal women. The etiology of BMS is poorly understood even though evidence for a possible neuropathic pathogenesis. BMS cause from various local or systemic factor, including nutritional deficiencies, hormonal change, local infection, dental procedure, dry mouth, medication and systemic disease including diabetes mellitus. Many studies suggest peripheral alteration in sensory of trigeminal nerve system. BMS patients with supertaster indicates pathologies of central and peripheral nerve system induced by an alteration in the taste system at the level of chorda tympani and glossopharyngeal nerve. The author discuss our current understanding of etiology and pathogenesis of BMS that refered chronic oral pain.