• Maxillofacial Plastic and Reconstructive Surgery
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• 제12권3호
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• pp.42-48
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• 1990

This is a case report on an unusual - heavy buccal frenum in young lady which was treated by frenectomy, vestibuloplasty and total-palatal mucosal free graft. The authors noticed that this abnormal condition lead several chronic complications in young patient as like as premature loss of upper molar teeth, early and rapid loss of alveolar bone around insertion of frenum, over - extended eruption of lower molar teeth and abnormal mandibular movements, etc. After frenectomy and surgical extension of buccal vestiblue on both upper and lower posterior regions, we obtained a full - sized palatal mucosal graft and moved it on upper and lower extension area seperately as two pieces of free grafts to offer inherent function of denture - bearing mucogingiva and same color - matching with oral mucosa and to prevent post - operative relapse of vestibular height. We discussed here about unusual abnormality and their complications of unusual buccal frenum and its treatment.

• 대한소아치과학회지
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• 제26권1호
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• pp.69-76
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• 1999

The mandibular buccal frenum is defined as a fold of mucous membrane at the posterior labial vestibule and attaches the lips and the cheeks to the alveolar mucosa, gingiva, and underlying periosteum. The buccal frenum becomes a problem when its attachment is too close to the marginal gingiva. It may then pull on healthy gingiva, encourage plaque formation and interfere with tooth brushing. Especially, heavy buccal frenum mucogingivally results in insufficent attached gingiva, inadequate vestibular depth and high frenum attachment and also difficulty in eruption of mandibular premolar. Frenotomy, frenectomy and mucogingival surgery are used in treating heavy buccal frenum. Frenotomy with autogenous free gingival graft has been used popularly because of its stable result. But, it is difficult in younger children because of inadequate donor site, difficulty in making recipient site and behavior management. Frenotomy with apically positioned flap is considered as more efficient way for a very young child with heavy buccal frenum. Additionally, modified deep sedation with $N_2O-O_2$ can be used as an adjunct for the effective treatment outcome. Decrease in muscle pull, adequate width of attached gingiva and increased vestibular depth can be expected from this treatment approach.

• Journal of Oral Medicine and Pain
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• 제8권1호
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• pp.33-41
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• 1983

The authors observed the ultrastructure of oral leukoplakia simplex of gingiva, buccal mucosa, tongue and alveolar ridge. For the purpose of clearly defining the lesions under investigation in this study, leukoplakias were cinsidered to be any white patches on the oral mucous membranes that could not be removed by rubbing and could not be classified clinically or microscopically as another diagnosable disease. The tissue to be examined were embedded in paraffin for light microscopic study. The tissue to be examined under the electronomicroscope were fixed in 2.5% glutaraldehyde in 0.1M cacodylate buffer and 1% osmic acid in 0.1M cacodylate buffer, dehydrated with guaded alchol, and treated with propylene oxide, and embedded in Epon.Ultrathin sections were obtained by LKB III ultrotome, stained with uranyl acetate/lead citrate, and examined with Corinth 500EM. The results were as follows : 1. Epithelium of leukoplakia consisted of stratum basale, stratum spinosum, stratum granulosum and stratum corneum. 2. There was hyperorthokerotosis or hyperparakeratosis. 3. Granular cells contained a lot number of membrane coating granule showing lamellar structure, clearing ot codensation, and a lot of keratohyaline granule varied in size. 4. An increased concentration of tonofilaments and an increased number of desmosomes were found in the stratum spinosum. 5. Basal lamina generally showed its continuity, but in some locatoins, its interreption and multiplication appeared.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제27권2호
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• pp.118-128
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• 2001

Two major salivary glands, submandibular duct, lingual nerve, and vessels are situated beneath the mouth floor. Among these, passing through the pterygomandibular space, lingual nerve is innervated to the lingual gingiva and the mucosa of mouth floor, and is responsible for the general sensation of the anterior two thirds of the tongue. So, the injury of the lingual nerve during an anesthesia or surgery in the retromolar area may cause complications such as a numbness, a loss of taste of the tongue and the other dysfunctions. Therefore, to find out the morphology and the course of lingual nerve and to clarify the topographical relationships of lingual nerve at the infratemporal fossa and paralingual space area, 32 Korean hemi-sectioned heads were dissected macroscopically and microscopically with a viewpoint of clinical aspect in this study. This study demonstrated various anatomical characteristics with relation to the course and topography of the lingual nerve in Koreans. And clinical significances based on the anatomical variations through the topography of the courses and communications between the mandibular nerve branches were described in details.

• 대한수의학회지
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• 제34권3호
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• pp.569-581
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• 1994

This study was carried out to investigate the pathogenesis of canine herpesvirus(CHV) infection in dogs. The 17 puppies, one day old, delivered from CHV seronegative 3 dams were divided into two groups. The 13 puppies were inoculated intranasally with 1ml of CHV-KK inoculum($5{\times}10^{5.6}TCID_{50}/ml$) and 4 puppies were served as control. And then the puppies were sacrificed at 2, 4, 6 and 7 days after the treatment, and collected blood, nasal mucosa, trigeminal nerve, trigeminal ganglion, bone marrow, eye, brain and other major organs. These organs were examined histopathologically and electron microscopically. The platelets of puppies infected with CHV were dramatically decreased because of the damages of vascular endothelial cells. Histopathologically, necrotizing vasculitis and neuritis were proceeded the generalized focal necrosis of all organs. Necrotic changes in trigeminal ganglion, trigeminal nerve and ventroposteriomedial nucleus of thalamus were observed in 4 puppies infected with CHV. Herpesviral particles, various forms of maturation, were observed in endothelial cells of the alveolar capillary and hepatic sinusoid with electron microscopy. These results suggest that the generalized focal necrcsis of all organs including brain and eyes in canine herpesvirus infection were resulted from generalized vasculitis, and also the hemonecrotizing meningoencephalitis was related to the necrosis of trigeminal nerve pathway.

• 대한소아치과학회지
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• 제21권2호
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• pp.533-539
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• 1994

The mandibular buccal frenum is a fold of mucous membrane at the posterior labial vestibule, that attaches the lips and the cheeks to the alveolar mucosa, gingiva, and underlying periosteum. The buccal frenum becomes a problem if its attachment is too close to the marginal gingiva. It may then pull on healthy gingiva, encourge plaque formation and interfere with tooth brushing. Heavy buccal frenum mucogingivally results in insufficient attached gingiva, inadequate vestibular depth and high frenum attachment and also difficulty in eruption of mandibular second premolar. Frenectomy in various forms has been used for many years to remove the influence of the frenum. Unfortunately, the results are not always ideal and there is often postoperative relapse because of muscle pull. In this treatment, frenotomy was used in conjuction with autogenous free gingival graft with the object of removing the influence of the buccal frenum and creating an adequate and stable width of attached gingiva. We observed decrease in muscle pull, adequate width of attached gingiva and increased vestibular depth in addition to progressive eruption of second premolar. Periodic follow-up is needed for evaluation of relapse, grafting gingiva and also space regaining for second premolar.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제28권1호
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• pp.86-90
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• 2002

Sinus lifting was introduced for prosthetic reconstruction in 1960 decades by Boyne and is specifically used for implant surgery in maxillary posterior region with insufficient bony height and has been indicated for reconstruction of oro- antral and palato-alveolar cleft. We report that subtotal maxillectomy using sinus lifting and skin graft in mild maxillary cancer cases results in good prevention of oro-antral and oro-nasal fistula by preserving intact maxillary sinus mucosa and improves better functional outcome after maxillectomy.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제38권3호
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• pp.177-183
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• 2012

Herpes zoster is a viral infection caused by the reactivation of the varicella zoster virus, an infection most commonly affecting the thoracolumbar trunk. Herpes Zoster Infection (HZI) may affect the cranial nerves, most frequently the trigeminal. HZI of the trigeminal nerve distribution network manifests as multiple, painful vesicular eruptions of the skin and mucosa which are innervated by the infected nerves. Oral vesicles usually appear after the skin manifestations. The vesicles rupture and coalesce, leaving mucosal erosions without subsequent scarring in most cases. The worst complication of HZI is post-herpetic neuralgia; other complications include facial scarring, motor nerve palsy and optic neuropathy. Osteonecrosis with spontaneous exfoliation of the teeth is an uncommon complication associated with HZI of the trigeminal nerve. We report several cases of osteomyelitis appearing on the mandible, caused by HZI, and triggering osteonecrosis or spontaneous tooth exfoliation.

• 대한의생명과학회지
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• 제6권2호
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• pp.109-118
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• 2000

본 연구는 전자현미경적인 방법을 이용하여 흰쥐 기관지와 폐조직에 미치는 간접흡연의 영향을 조사하였다. 실험동물은 1일 3회씩 매회 15분간, 4주 동안 비주류 담배연기를 흡입하도록 하였다. 간접흡연 그룹의 폐조직에서는 세포질내에 다수의 용해소체을 함유하고 있는 중성구, 그리고 다양한 크기의 용해소체와 잔사체를 함유하는 대식 세포가 관찰되었다. 또한 폐포격벽은 팽대되었으며 섬유화현상이 나타났다. 기관지상피는 섬모상피세포가 점차 소실되었고, 분비세포 또는 배상세포들은 그 수가 증가하였으며, 섬모가 소실되고 표면적이 확장된 배상세포도 관찰되었다. 본 연구결과 이러한 미세구조의 변화는 간접흡연에 의한 세포상해의 전형적인 결과로 파악된다.

• 대한치과보철학회지
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• 제57권4호
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• pp.389-396
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• 2019

심하게 흡수된 치조제에서 의치의 유지력을 얻기 어려운 경우, 의치가 불안정하게 되어 의치 사용이 어렵다. 흡착 의치는 의치상 변연부를 가동 점막으로 봉쇄하여 폐구 시에 의치상 내면에 생기는 음압 형성을 통해 더 높은 유지와 안정을 목표로 한다. 본 증례에서는 4명의 환자들이 의치가 헐겁다는 주소로 내원하였다. 의치의 유지력에 대한 높은 요구도를 반영하여 흡착 의치의 개념을 이용하여 유지와 안정을 얻고자 하였다. 무치악 환자들에서 흡착의치를 이용한 보철 수복 시 고려할 사항들에 대하여 비교 분석하여 보고하고자 한다.