• Korea Petroleum Association Journal
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• no.5 s.195
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• pp.4-7
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• 1997

교통세 인상은 정유업계의 수익성 개선이나 경쟁력 강화와는 관계없고 오히려 정유사들이 유가인상의 주도자로 인식되어 국민 불만의 대상이 되기도 하였다.

• Journal of the Korean Academy of Esthetic Dentistry
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• v.32 no.1
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• pp.8-15
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• 2023

In case with severely atrophied mandibular ridges, it may be difficult to achieve adequate retention and stability of dentures through the normal functional impression process of complete dentures. In these patients, an approach using the neutral zone raising technique may be an effective alternative. The neutral zone is defined as the area where the pressure of the tongue towards the outside of the mouth and the pressure of the cheek and lips towards the inside are balanced during the normal oral function of the muscular-nervous system. Complete dentures made through neutral zone impression not only improve retention and stability, but also provide adequate tongue space in the posterior teeth area. Additionally, food residues are reduced in the area around artificial teeth, and aesthetics are improved through appropriate facial support.

• The Journal of Korean Academy of Prosthodontics
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• v.57 no.2
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• pp.195-202
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• 2019

At the department of prosthodontics, the elderly patients with severely atrophied alveolar ridge who have been wearing complete dentures for a long period frequently visit the clinic. In general, the open-mouth impression technique for manufacturing a mandibular complete denture to secure primary support on buccal shelf area has been prevalent. In addition, for securing retention and stability of mandibular denture, we should consider diagnosis, oral function, denture border, occlusal plane, teeth arrangement, and patient training, etc.. But in edentulous patients with severe alveolar bone atrophy, it may hardly secure retention and stability of mandibular complete denture. To promote these, some of clinicians are making an attempt manufacturing the mandibular complete dentures using closed-mouth impression technique based on several reports that compare various impression techniques including open-mouth and closed-mouth impression technique. This case report suggests closed-mouth impression technique may promote retention and stability of mandibular complete denture and compares between the two impression techniques clinically.

• Restorative Dentistry and Endodontics
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• v.24 no.4
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• pp.560-569
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• 1999

Blood supply rather than nerve supply implies pulp vitality. To evaluate pulp vitality clinically, electric pulp test and thermal test which are based on sensory nerve response have been used in addition to many auxiliary data such as past dental history, visual inspection, radiographic examination, percussion, palpation and transillumination test. However, reactivity of the nerves to the stimulation is not synonymous with normalcy. Therefore measurement of pulpal blood flow using a laser Doppler flowmeter became a new trial to test the pulp vitality. The purpose of the present study was to evaluate normal pulpal blood flow level of maxillary teeth in adult to provide a guideline in determining the vitality of dental pulp. Pulpal blood flow was measured in maxillary central and lateral incisors, canines, first and second premolars and first molars of seventy nine adults of 22 - 30 years old using a laser Doppler flowmeter (PeriFlux 4001, Perimed Co., Stockholm, Sweden, 780 nm infrared laser, 1mW). For directly-made splints, silicone rubber impressions were taken directly from the mouth. For indirectly-made splints, alginate impressions were taken from the mouth and stone cast were made. After making depressions on the buccal surfaces of the cast teeth to indicate the hole positions, second impressions with vinyl polysyloxane putty were taken from the cast. Holes for the laser probes were made at the putty impressions 4mm above the gingival level. Laser probe (PF416 dental probe, 1.5mm) was inserted in the prepared hole and the splint was set in the mouth. After 10 minutes of patient relaxing, pulpal blood flow was recorded for 5 minutes on each tooth. The recorded flow was saved in the computer and calculated with a software 'Perisoft' version 5.1. Pulpal blood flow was also recorded in six teeth of five individuals with no response to electric pulp test and cold test, with periapical radiolucency, or with history of root canal treatment to compare with nonvital teeth. The difference between the mean flow values of each group of teeth were analyzed using one-way ANOVA and Duncan's Multiple Range test. The results were as follows: 1. The average pulpal blood flow values of all the tested teeth of each location were between 9 - 16 Perfusion Unit. Pulpal blood flow value was highest in maxillary lateral incisors, followed by first premolars, second premolars, canines, central incisors, and then first molars (p<0.01). 2. In six anterior teeth, indirectly-made splint group showed higher pulpal blood flow values than directly-made splint group (p<0.01). In posterior teeth, however, there was no significant flow value difference between directly-made splint group and indirectly-made splint one (p>0.05). 3. Teeth with vital pulps showed higher signal values than teeth with nonvital pulps (p<0.01), and the flow photographs showed heartbeat-synchronous fluctuations and vasomotions, while those were absent in non vital tooth.

• 월간 기계설비
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• s.245
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• pp.82-83
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• 2010

올 초만 해도 자재 시장에 큰 소용돌이가 있을 것이라는 견해가 지배적이었다. 결과는 찻잔 속의 태풍으로 그쳤다. 침체된 건설 경기에 돌파구가 생기지 않은 탓이다. 오히려 부도 여파와 줄어든 수요 때문에 자재 시장은 이전 투구의 양상까지 보이고 있다. 단기적으로 큰 변화가 없다고 전제할 때 당분간은 기업 경쟁력 강화 특히 구매력 강화에 더욱 힘써야 하겠다. 즉 회사의 구매 경쟁력 요소 중 강점은 더욱 부각시켜 단가 인하의 토대로 만들고 약점은 최소화하여 단가 인상을 막아야겠다. 연말 결산의 의미에서 회사의 구매 경쟁력 수준 파악에 필요한 요소들을 점검해 보고 그에 따른 경쟁력 강화 전략도 함께 살펴보겠다.

• 대한치과보철학회:학술대회논문집
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• 2004.11a
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• pp.93-93
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• 2004

• 대한치과보철학회:학술대회논문집
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• 2000.11a
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• pp.73-73
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• 2000

• The Journal of Korean Academy of Prosthodontics
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• v.56 no.2
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• pp.120-125
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• 2018

Conventional denture impression techniques have limitations for edentulous patients with severe alveolar bone resorption and can cause problems from excessive border extension. Especially when a patient has movable tissue it is difficult to make accurate impression, thus might interrupt stable seating of complete denture. Fabrication of complete denture using closed mouth technique for edentulous patient with severe ridge resorption is thought to provide better stability and retention. In this case, an 86-year-old patient had both edentulous jaws with epulis fissuratum on maxillary anterior ridge and severe mandibular ridge resorption. Thus, tentative vertical dimension was determined by using Centric trayand individual tray attached with gothic arch tracer was fabricated. Complete denture was fabricated using closed mouth technique and the patient was satisfied with better stability and retention of the complete denture.

• 방재와보험
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• s.111
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• pp.32-34
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• 2006

최근 대재해 발생의 증가 추세에 따라 손실이 증가되고 담보력이 축소되어 보험손실액이 매년 증가하고 있다. 세계 재보험업계가 대형 재해 및 배상책임 보험 클레임 증가로 인해 이중고를 겪고 있기에 대형위험의 요율 인상이 불가피한 실정이다. 이러한 경색화 상황 속에서 국내 보험사 간의 거래 확대와 더불어 수익성을 고려한 적정한 위험도 평가와 기술적 내부 역량 확대가 요구되고 있다.

• 주택과사람들
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• s.201
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• pp.76-79
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• 2007

영국 런던 부동산 시장의 가파른 오름세가 지속되고 있다. 2006년 초 일부 전문가들이 금리 인상 등으로 가격 오름세가 꺾일 거라는 전망을 내놓았지만 계속 되는 수요 증가로 가격이 급등세를 보인 것. 런던의 부동산 시장을 돌아보고, 특히 런던에서도 가장 수요가 많은 웨스트엔드 지역의 경쟁력은 무엇인지 분석했다.