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가토의 두개골에서 Pore의 유무에 따른 티타늄 반구에서의 골형성 능
박정표,오철중,정승곤,박홍주,오희균,유선열,국민석,Park, Jung-Pyo,Oh, Chul-Jung,Jung, Seunggon,Park, Hong-Ju,Oh, Hee-Kyun,Ryu, Sun-Youl,Kook, Min-Suk 대한악안면성형재건외과학회 2013 Maxillofacial Plastic Reconstructive Surgery Vol.35 No.1
Purpose: This study is performed to determine the effects of titanium cap with various sizes of pores on bone formation during guided bone regeneration (GBR). Methods: Calvaria from 10 adult male rabbits were chosen as the recipient sites. A trephine bur with a diameter of 10 mm was used to form one round groove on each side of sagittal suture of the cranium, and a round bur with a diameter of 1.5 mm was used to form 6 small holes on the inner circles of round grooves to induce bleeding. In the control group, bone graft was not conducted, and closed titanium cap was fixed in the round groove. Bone graft was not performed in groups 1 and 2, but fixed on titanium caps with 0.2 mm, and 0.5 mm sized pores, respectively. For groups 3, 4, and 5, a synthetic bone graft material (${\beta}$-tricalcium phosphate, Cerasorb$^{(R)}$, Germany) was transplanted, and titanium caps without pore, with 0.2 mm and 0.5 mm sized pore were fixed, respectively. The animals were sacrificed 4 weeks after, and clinical, radiographical, and histomorphometrical evaluation of bone regeneration was performed. Results: In all groups, there were no clinical signs of infection, inflammation or wound dehiscence. Radiographic evaluation revealed well-defined semi-circular radiopacity inside the titanium cap of groups 3, 4, and 5. Histologically, the inner surface of the hemisphere was evenly lined with newly formed bone tissue, as well as grafted bone material in the group 3. In groups 4 and 5, the insertion of connective tissue was observed along the inner surface. However, the overall surface area between the grafts with different holes yielded no statistical significance in the histomorphometrical evaluation. Conclusion: Although the total area of newly formed bone showed no significant difference, excellent bone formation tendency was observed histologically when closed caps were used with bone graft was accompanied.
가토의 두개골에서 Pore의 유무에 따른 티타늄 반구에서의 골형성능
박정표 ( Jung Pyo Park ),오철중 ( Chul Jung Oh ),정승곤 ( Seung Gon Jung ),박홍주 ( Hong Ju Park ),오희균 ( Hee Kyun Oh ),유선열 ( Sun Youl Ryu ),국민석 ( Min Suk Kook ) 대한악안면성형재건외과학회 2013 Maxillofacial Plastic Reconstructive Surgery Vol.35 No.1
Purpose: This study is performed to determine the effects of titanium cap with various sizes of pores on bone formation during guided bone regeneration (GBR). Methods: Calvaria from 10 adult male rabbits were chosen as the recipient sites. A trephine bur with a diameter of 10 mm was used to form one round groove on each side of sagittal suture of the cranium, and a round bur with a diameter of 1.5 mm was used to form 6 small holes on the inner circles of round grooves to induce bleeding. In the control group, bone graft was not conducted, and closed titanium cap was fixed in the round groove. Bone graft was not performed in groups 1 and 2, but fixed on titanium caps with 0.2 mm, and 0.5 mm sized pores, respectively. For groups 3, 4, and 5, a synthetic bone graft material (β-tricalcium phosphate, Cerasorb, Germany) was transplanted, and titanium caps without pore, with 0.2 mm and 0.5 mm sized pore were fixed, respectively. The animals were sacrificed 4 weeks after, and clinical, radiographical, and histomorphometrical evaluation of bone regeneration was performed. Results: In all groups, there were no clinical signs of infection, inflammation or wound dehiscence. Radiographic evaluation revealed well-defined semi-circular radiopacity inside the titanium cap of groups 3, 4, and 5. Histologically, the inner surface of the hemisphere was evenly lined with newly formed bone tissue, as well as grafted bone material in the group 3. In groups 4 and 5, the insertion of connective tissue was observed along the inner surface. However, the overall surface area between the grafts with different holes yielded no statistical significance in the histomorphometrical evaluation. Conclusion: Although the total area of newly formed bone showed no significant difference, excellent bone formation tendency was observed histologically when closed caps were used with bone graft was accompanied.
박재봉,어규식,전양현,이진용,홍정표,Park, Jae-Bong,Auh, Q-Schick,Chun, Yang-Hyun,Lee, Jin-Yong,Hong, Jung-Pyo 대한안면통증구강내과학회 2007 Journal of Oral Medicine and Pain Vol.32 No.2
Antimicrobial action of phytoncide in the mouth decrease odor-producing microorganisms. Also phytoncide has malodor effect by reaction with volatile sulfur compounds. Phytoncide has excellent malodor effect in microbiologically and chemically. This study prove the malodor effect of phytoncide by use ferrous sulfate. So I try to make new treatment method for halitosis. I get the results as follows. 1. The difference of mean value of absorbancy was 0.849 between the mean absorbancy of deposition by add phytoncide to saliva and the saliva only. 2. The difference of mean value of absorbancy was 0.701 between the mean absorbancy of deposition by add phytoncide to distilled water and the distilled water only. 3. The difference of mean value(0.849) in saliva by existence of phytoncide was larger than in double distilled water(0.701) by existence of phytoncide. Therefore, phytoncide make more deposition in saliva than double distilled water by reaction with sulfur compounds. As the results, phytoncide reaction with sulfur compounds in saliva. It take malodor action in liquid state effectively. It is thought, only the toothpaste it knows from in the limit which does not have a side effect by the human body it adds in the oral cavity of the mouth rinse and with the fact that it will be able to use positively in clinic.
피톤치드 처리 후의 잔존 구강 세균이 Pr. intermedia에 미치는 영향
박재봉,어규식,전양현,홍정표,Park, Jae-Bong,Auh, Q-Schick,Chun, Yang-Hyun,Hong, Jung-Pyo 대한안면통증구강내과학회 2009 Journal of Oral Medicine and Pain Vol.34 No.2
The present study was performed to observe the effect of phytoncide on oral normal microflora and the inhibitory effect of the surviving resident oral bacteria on Pr. intermedia. In this study, saliva from each of 20 healthy subjects was treated with 1% phytoncide from Japanese Hinoki (Chamaecyparis obtusa Sieb. et Zucc.). Surviving salivary bacteria were isolated on blood agar plates and identified by 16S rDNA sequencing. In order to select inhibitory isolates against Pr. intermedia, the isolates from the phytoncide-treated saliva were cultured with Pr. intermedia. The results were as follows: 1. Among the 200 surviving resident oral bacterium, 148(74.0%) bacterium inhibit the growth of Pr. intermedia on blood agar plates. 2. The 200 surviving resident oral bacterium were 109 Streptococcus salivarius(54.5%), 25 Streptococcus sanguinis(12.5%), 15 Streptococcus mitis(7.5%). 3. Among the 148 bacteria which inhibit Pr. intermedia, Streptococcus salivarius was 85.3%(93/109), Streptococcus sanguinis was 64.0%.(16/25), Streptococcus mitis was 54.3%(8/15), Streptococcus parasanguinis was 66.7%(6/9), and Streptococcus Alactolyticus was 100%(8/8). Taken together, among the surviving resident oral bacterium, Streptococcus salivarius, Streptococcus sanguinis, Streptococcus mitis were mainly observed to inhibit Pr. intermedia. and they may exert an additional inhibitory activity against the periodontopathic bacterium. Therefore, phytoncide can be used for preventing and ceasing the progress of periodontal disease and halitosis, and thus is expect to promote oral health.
고휘도 LED를 이용한 단거리 가시광 통신 모듈레이터 설계 및 제작
김권우(Kwon-Woo Kim),한동열(Dong-Yeol Han),이승호(Seung-Ho Lee),곽려혜(Lee Hui Kueh),김민규(Min-Kyu Kim),김정표(Jung-Pyo Kim),박현덕(Hyun-Duk Park),이준탁(John-Tark Lee) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
본 논문에서는 LED를 이용한 가시광 통신이 가능함을 보이고, Micro Controller PIC 16F877chip을 이용한 통신 모듈을 설계 및 제작하였다. 이로써 LED를 조명으로 사용할 뿐만 아니라 그것을 장착한 휴대기기 간의 단거리 가시광 통신이 가능함을 보이고, LED의 효율적인 사용의 한 방법을 제시하고자 한다.
Phenothiazine 에 의해 유발된 Torsades de Pointes 1 예
이상호,최선희,홍정표,심원보,박무정,조만종 대한내과학회 1997 대한내과학회지 Vol.52 No.1
Torsades de pointes (TdP) is a form of polymorphic ventricular tachycardia associated with a prolonged QT interval or increased U wave. It may occur either in the congenital(idiopathic) form or in the aquired form. Although aquired TdP could be found in many clinical settings such as various drugs, bradycardia, or electrolyte imbalance, it is most commonly induced by drugs. The underlying mechanism is though to be the triggered activity arising as a consequence of early afterdepolarization. Phenothiazine has many derivatives that can lead to occur the cardiovascular events including hypo- tension, syncope, tachycardia and various ECG changes. Chloropromazine is a propylamine derivative of phenothiazine. We report a case of TdP occurred after chloropromazine usual dosage.