• 구강회복응용과학지
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• 제17권2호
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• pp.107-112
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• 2001

The prosthodontic treatment of severely resorbed edentulous patients has been one of the frustrating areas due to extensive loss of tissues. The integrated neuromuscular balance among tongue, lip, and cheek is compromised. The retention, stability, and support are the three major factors to influence the clinical outcome. Fish described a denture as having three surface, with each surface playing an independent and important role in the over all fit, stability, and comfort of the denture. He recommended that the polished surface should be a series of inclines so that pressure from muscular activity will retain dentures. Within the denture space there is an area that has been termed the neutral zone. The neutral zone is that area in the mouth where, during function, the forces of the tongue pressing outward are neutralized by the forces of the cheeks and lips pressing inward. According to Jacobson and Krol, neuromuscular control interacts to provide retention and the relationship of polished surface of denture base to the surrounding muscular structure of orofacial capsule facilitates the stability and retention. This neutral zone concept has been demonstrated with various modification by a number of authors. The theory used to develop the denture base contours is based on the belief that the muscle should functionally mold not only the border but the entire polished surface. Lott and Walsh reported the clinical success on complete mandibular dentures with application of neutral zone concept. A number of studies demonstrated that denture stability and retention are more dependent on correct position of the teeth and correct contour of external surfaces of the denture in a severely resorbed alveolar ridge. This article presents a prosthodontic approach to treatment of a edentulous patient using neutral zone technique to improve the retention and stability of the prosthesis.

• Archives of Plastic Surgery
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• 제46권1호
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• pp.23-33
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• 2019

Background Venous malformations (VMs) are a common type of vascular malformation. However, their causes and management remain unclear, and few studies specific to VMs of the head and neck have been reported. This study describes our experiences with VMs of the head and neck. Methods This retrospective study included 82 patients who underwent treatment for head and neck VMs, among 222 who visited our vascular anomalies center. Medical records between 2003 and 2016 were reviewed to identify common features in the diagnosis and treatment. The diagnosis of suspected head and neck VMs was based on the results of imaging studies or biopsies, and the VMs were analyzed based on magnetic resonance imaging, computed tomography, and Doppler sonography findings. Results VMs were slightly more common in female patients (59.8%), and 45.1% of patients developed initial symptoms at the age of 10 or younger. Lesions were slightly more common on the right side (47.3%). The main sites involved were the cheek (27.7%) and lip area (25.5%). The muscle layer was commonly involved, in 98.7% of cases. Small lesions less than 5 cm in diameter accounted for 60.8% of cases, and well-defined types were slightly more prevalent at 55.4%. Improvement was observed in 77.1% of treated patients. Conclusions Early and accurate diagnosis and appropriate treatment according to individual symptoms are important for successful treatment of VMs. If treatment is delayed, the lesions can worsen, or recurrence becomes more likely. Therefore, VMs require a multidisciplinary approach for early and accurate diagnosis.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제30권1호
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• pp.1-10
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• 2008

Purpose: This study was aimed to examine the resorption rate, the healing pattern, and the response of the surrounding tissue after the graft of the acellular dermal matrix ($AlloDerm^{(R)}$) and the autogenous dermis, and to report the clinical result of the use of $AlloDerm^{(R)}$ in order to restore the soft tissue defects. Methods: Twenty mature rabbits, weighing about 3 ㎏, were used for the experimental study. The $10\times10$ mm-size autogenous dermis and the $AlloDerm^{(R)}$ were grafted to the space between the external abdominal oblique muscle and the fascia of the rabbits. And the $AlloDerm^{(R)}$ was grafted to the pocket between the skin and the underlying perichondrium of rabbit ear. The resorption rate of the grafted sites was calculated, and the tissue specimens were histologically examined at 1, 2, 4, and 8 weeks after the graft. The five patients with the cleft-lip nasal deformity and the one patient with the saddle nose deformity, who received the $AlloDerm^{(R)}$ graft to restore the facial soft tissue defects, were reviewed for the clinical study. Results: The resorption rate at 8 weeks after the graft was 21.5% for the autogenous dermis, and 16.0% $AlloDerm^{(R)}$. In microscopic examinations, the infiltration of the inflammatory cells and the epidermal inclusion cyst were observed in the autogenous dermis graft. However, the neovascularization and the progressive growth of the new fibroblasts were shown in the $AlloDerm^{(R)}$ graft. And the six patients, who received the $AlloDerm^{(R)}$ graft, demonstrated the good stability of the grafts and improved appearance. There were no remarkable complications such as inflammation, rejection, dislocation, and severe absorption in the clinical cases. Conclusion: These results suggest that $AlloDerm^{(R)}$ can be an useful graft material for restoration of soft tissue defects because of the good stability and the tissue response without the remarkable clinical complications.

• 대한장애인치과학회지
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• 제13권1호
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• pp.19-22
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• 2017

비골격성 전방부 개방 교합은 대부분 구강 주위 근육 기능의 부조화로 인한 것이기 때문에 근기능요법을 통한 치료가 추천된다. 그러나 근기능요법의 시행 시에는 환자의 협조도가 필수적이기 때문에, 협조도가 충분하지 못한 경우에는 습관 차단 장치를 적극적으로 활용하는 것이 도움이 될 수 있다. 습관 차단 장치를 단독으로 이용하는 것에 비하여 근기능요법을 병행할 수 있다면 장치 치료의 기간이 단축되고 치료 후의 안정성에도 좋은 결과를 가져올 수 있을 것으로 판단된다.

• Parasites, Hosts and Diseases
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• 제42권1호
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• pp.41-44
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• 2004

The pond smelt Hypomesus olidus and minnow Zacco platypus were collected from the Soyang and Daechung Lakes in January 2003, and their metacercarial infections was examined by the muscle compression and artificial digestion techniques. In the Soyang Lake, 161 metacercariae of Clonorchis sinensis (0.35 per fish) were harvested from 459 pond smelts examined. Also, 13 metacercariae of C. sinensis (0.43 per fish), 1 of Metagonimus sp., 4 of Echinostoma sp., 148 of Centrocestus armatus and 44 unidentified species were collected from 30 minnows. In the Daechung Lake, 369 metacercariae of C. sinensis (3.69 per fish) and 51 unidentified species were recovered from 100 pond smelts. The metacercariae of C. sinensis were fed to experimental rats, in which the adult flukes were identified. The pond smelts and minnows collected from the Soyang and Daechung Lakes were verified to be the second intermediate hosts and the sources of human C. sinensis infection.

• 대한수의학회지
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• 제45권4호
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• pp.527-536
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• 2005

The effects of dietary Gleditschia on fatty acid composition, lipid oxidation, and pork quality were investigated. Pigs (n=40) were fed a diet containing 0, 0.1, 0.2, 0.4, and 1% Gleditschia for 14 weeks and slaughtered at 110 kg average. The longissimus throracis et lumborum muscle was collected at 24 hr postmortem. Pork loin chops (3 cm thick) were packaged aerobically and stored at $4^{\circ}C$ for 7 days. Samples were analyzed for fatty acid composition, ultimate pH, thiobarbituric acid-reactive substance (TBARS), color ($L^*$, $a^*$, $b^*$), drip loss and water-holding capacity. There was no significant difference of moisture and crude fat percent in between treatment and control group, and the color stability of pork loin better in all treat groups was more improved during cold storage. The change of pH was significantly increased (p<0.05) in 0.2, 0.4, 1% treatment groups compare to the control group. Water-holding capacity of pig loins was significantly higher (p<0.05) in all treat groups than in control group; 0.2% treat group was the highest in the water holding capacity followed by 0.4, 1, and 0.1% treat groups. Less drip loss of pig loin was observed with samples from Gleditschia-fed pigs except 1% treat group. Unsaturated fatty acid were tend to be decreased and saturated fatty acid were tend to be increased in Gleditschia-treated group. Thiobarbituric acid-reactive substance value of control was significantly higher than that of the Gleditschia-fed group (p<0.05).

• 한국어병학회지
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• 제11권1호
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• pp.35-41
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• 1998

참전복 인공종묘 생산후 박리시 패각 파손 및 연체부 손상 등을 방지하고자 여러 가지 마취제가 사용되고 있으나, 대부분의 전복 마취제는 전복에 대하여 비교적 강한 독성을 가지고 있다. 따라서 무해하다고 인정되어 인체의 마취에 사용되는 lidocaine과 FDA에서 유일하게 수산용 어류 마취제로 인정한 MS-222를 참전복의 마취제로 사용하고자 각장 크기별로 마취 실험을 실시하였다. 각장 1 cm인 전복에 대한 lidocaine과 MS-222의 박리효과는 각장 3 cm인 공시패에서보다 훨씬 우수하게 나타났다. 그리고 각장 1 cm인 공시패에서 lidocaine과 MS-222의 적정마취농도는 각각 200 ppm과 100 ppm이었다. 전복 크기에 따라 박리 효과의 차이는 있었으나 우수한 박리 효과가 인정되었고, 더욱이 싼 가격, 안정성 및 취급 효과가 용이한 점 등을 고려할 때 기존의 전복 마취제를 대신할 수 있을 것으로 생각된다.

• 디지털융복합연구
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• 제19권2호
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• pp.315-322
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• 2021

본 연구는 전신질환 노인을 대상으로 구강근기능과 구강환경을 조사하고 노인 구강건강 증진안을 제언하고자 하였다. 2019년 4-6월 동안 65세 이상 전신질환 노인 64명을 대상으로 구강근력, 구강건강관련 삶의 질, 구강세균에 대해 조사하고, PASW Statistics ver 18.0을 이용하여 분석하였다. 전신질환 유병은 1개 43.8%, 2개 40.6%, 기능치아수는 18.6개였다. 나이는 기능치아수(r=-.384, p<.01), 혀근력(r=-.104, p<.001)과 부적 상관관계가 있었고, 혀근력과 구순근력은(r=.279, p<.05)과 정적 상관관계가 있었으며, 연령과 총세균수는(r=-.336, p<.01) 부적 상관관계, 기능치아수와 총세균수는(r=.551, p<.001) 정적 상관관계 그리고 전신질환 수와 총세균수는(r=.327, p<.01) 정적 상관관계로 나타났다. 노인 전신질환자의 구강근기능과 구강환경의 문제점을 토대로 노인 구강건강 증진안을 제언하는데 의미가 있었고 초고령 시대를 앞두고 있는 지금 구강건강 관련 삶의 질을 증진시키기 위한 실제적인 정책안이 요구되었다.