간접 복합레진 수복의 이론과 실제

황인남(In-Nam Hwang),장지현(Ji-Hyun Jang) 대한치과의사협회 2012 대한치과의사협회지 Vol.50 No.7

The demand for tooth-colored restorations has grown considerably during the last decade. Posterior composite restorations have risen in popularity as a result of the development of improved resin composites, bonding systems and operating techniques. A major limitation of direct composite restoration is the difficulty of controlling the polymerization shrinkage. To overcome this limitation, the indirect fabrication of a composite restoration and cementation with resin cement has been advocated. Unfortunately, the current available resin cements with indirect restorations do not always bond to dentin as strongly as dentin adhesive systems bond with direct resin composite restorations. Several procedural strategies have been proposed for indirect composite restoration. In this regard, the rationale for the indication, characteristics and clinical application is described in this paper. As a result, we will try to suggest the evidence-based guidelines for indirect composite restorations by reviewing each available indirect composite products, technical procedure and pronosis.

정보화 사회의 여가교육

황인남(In Nam Hwang),이진희(Jin Hee Lee) 한국여가레크리에이션학회 1998 한국여가레크리에이션학회지 Vol.15 No.-

The purpose of this study is to suggest leisure education for developing right personality and healthy life behavior. Therefore we concluded that leisure education would be transformed following like this. First of all people must have the knowledge about the importance and specific of leisure which always lives in human life. Therefore people would be made to have leisure concept as positivity. Second as a leisure education people have to learn the knowledge connected with computer which would be able to exchange the data each other. Third using on-line data base system, leisure program have to be developed as multi-cultural and multi-valuable.

다른 색상의 복합레진 적층 수복이 표면 색상에 미치는 영향

황인남(In-Nam Hwang),박수정(Su-Jeong Park),김상원(Sang-Won Kim),김태건(Tae-Geon Kim),염철만(Cheol-Man Youm),조선정(Seon-Jeong Cho),황윤찬(Yun-Chan Hwang),박영준(Yeong-Joon Park),오원만(Won-Mann Oh) 대한치과재료학회 2003 대한치과재료학회지 Vol.30 No.3

화랑도(花郞徒) 신체운동(身體運動)에 있어서의 편역(遍歷)에 관한 연구(硏究)

황인남 ( In Nam Hwang ),유영철 ( Yiung Chul Yu ) 한국레져스포츠학회 2002 한국레저스포츠학회지 Vol.6 No.-

The purpose of thin study in to investigate the pilgrimage of physical activities in Hwarangdo. Conclusions one summariged as follow; 1. We know that the aim of the pilgrimage of a Hwarangdo on the basis of sunworship, was to train their physical and mental condition, travelling many splendid mountains and rivers. And we know that it was in change of a very important position in the sense of military affairs as well as playing and religious ritual. 2. In Hwarangdo, the aim of practice of the pilgrimage was to observe What the realities of the people`s live was, secretly to search for the movements of the enemy, and to stir up the courage of the people by mass training. Also it was practiced with the view of protecting the political and military security.

위상배열기법을 이용한 치아결함 초음파이미지 진단기술개발

오윤정,황인남,박수정,임광희,조현준,조영태,Oh, Yun-Jung,Hwang, In-Nam,Park, Su-Jung,Im, Kwang-Hee,Cho, Hyun-Joon,Cho, Young-Tae 한국생산제조학회 2009 한국생산제조학회지 Vol.25 No.2

Recently, researches to develop phased array ultrasonic examination techniques are proceeded to diagnose dental caries and the status of surgical operation of dental implant. Sound field analysis of phased array ultrasonic transducers were carried out in order to characterizing the ultrasonic phased array beams. The sound field of ultrasonic radiation was calculated for the sample called "gypsum-improved stone" with the similar characteristics of dental materials. Industrial phased array ultrasonic devices were utilized for the insptriion of the artificial flaws machined in the gypsum-improved stone. Dental implants were made at the pig jaw bone and defect images were confirmed for the dental implants.

서울시 댄스스포츠 보급실태에 관한 연구

김현나(Hyun Na Kim),황인남(In Nam Hwang) 한국여가레크리에이션학회 1999 한국여가레크리에이션학회지 Vol.17 No.-

The purpose of this study was investigate present condition of the DanceSport(DS) by researching wards and universities` DS lectures in Seoul arid internal DS associations. The results were as follows: First, DS lectures were executed with 13 over total 25 wards in 1999. The growth of the DS lectures was extended 54% for last year. And they become to specialize and charge. Second, 17 universities opened DS lectures. It is estimated 55% of investigated target, 31 universities. Opened Lectures were as liberal art in 9, as major in 3, 4 universities opened lecture as liberal art and major. Third, main associations of DS were Korea Association of education of DanceSport (KAEDS), Korea DanceSport Federation(KDF) and Korea DanceSport Council(KDC), They held lots of DS championships to select the excellent DS atheletes and courses for teacher and the mass of people.

백서에서 Depulpin^®과 Formocresol에 대한 치수와 치근단 조직의 반응

문형인,김선호,황윤찬,오병주,황인남,김선헌,정선와,윤창,오원만,Moon, Hyung-In,Kim, Sun-Ho,Hwang, Yun-Chan,Oh, Byung-Ju,Hwang, In-Nam,Kim, Sun-Hun,Jeong, Sun-Wa,Youn, Chang,Oh, Won-Mann 대한치과보존학회 2002 Restorative Dentistry & Endodontics Vol.27 No.4

One fifth dilution of formocresol is usually used for pulpotomy of the primary teeth and emergency pulpotomy of the permanent teeth. However the use of formaldehyde has been subjected to criticism because it may be absorbed into the blood stream and become distributed systemically, it nay also alter the pulp tissue rendering it immunologically active, and have carcinogenic potential. Recently Depulpin$^{\circledR}$(VoCo., Germany) gains popularity as a devitalizing agent during root canal therapy in spite of high concentration of 49 % paraformaldehyde because it facilitate devitalization of pulp and make root canal therapy easier But there have been not enough publications about the reaction of pulp and periapical tissue caused by Depulpin. This study was performed to evaluate the histological changes in pulp and periapical tissue of rats after pulpotomy using formocresol and Depulpin and to elucidate the toxic effects of these agents. Thirty six Sprague-Dawley rats were anesthetized by intraperitoneal injection of ketamine Maxillary first molar teeth were used for pulpotomy with formocresol and Depulpin. Rats were sacrificed after 2 days, 4 days, 1 week, 2 weeks, 3 weeks and 4 weeks respectively. Specimens were histologically observed by light microscope changes in pulp and periapical tissue. The obtained results were as follows. 1. Formocresol group A zone of fixed tissue. in which odontoblasts could clearly be defined, was present directly underneath the pulpotomy dressing in almost all teeth of this group. This was followed by an area of necrotic tissue which resembled dried out fibrous tissue with no cellular detail except some pyknotic nuclei. In the specimens of after 2 days, 4 days, 1 week, 2 weeks in which vital tissue was present, it was separated from the fibrous area by a zone of inflammation. In the specimens of after 3 weeks and after 4 weeks, inflammatory infiltrate was in the periodontal ligament adjacent to the apical foramina of the teeth. 2. Depulpin$^{\circledR}$ group The area of necrotic tissue which had no cells and fibers, was present adjacent to the dressing. This was followed by dried out fibrous tissue with no cellular details except some pyknotic nuclei, A short stump of vital pulp with odontoblasts was present at the end of the canal after 2 days. Inflammatory infiltrate was in the periodontal ligament after 4 days and after 1week. Severe root resolution and necrosis of periapical tissue opposite the root resorption site were defined after 2 weeks and after 3 weeks. Periapical lesion which consist of necrotic tissue surrounded by a fibrous connective wall, was found after 4 weeks. The results indicated that Depulpin can cause more adverse reaction to the dental pulp and periapical tissue than formocresol, and further studies are needed for its clinical use with safety.

ProFile, ProTaper^TM K-Flexofile 근관 성형시 근관의 만곡도에 따른 근관 형태 변화 비교연구

이보금,김동준,황윤찬,황인남,오원만,Lee, Bo-Kum,Kim, Dong-Jun,Hwang, Yun-Chan,Hwang, In-Nam,Oh, Won-Mann 대한치과보존학회 2005 Restorative Dentistry & Endodontics Vol.30 No.4

본 연구는 ProFile, ProTaper 및 K-Flexofile로 근관 성형시 근관의 만곡도에 따라 근관의 형태가 어떻게 변화하는지를 비교 분석하고자 시행되었다. ISO #15 finger spreader를 15도, 30도 및 45도로 만곡시키고 에폭시 레진으로 각각도의 근관을 갖는 30개의 근관 모형을 제작하였다. 근관의 길이는 18mm로 하였고 근관의 만곡은 근관의 입구로부터 10mm 부위에서 시작하도록 제작하였다. 근관 성형에는 엔진 구동형 니켈-타이타늄 파일인 ProFile과 ProTaper, 수동형 stainless steel 파일인 K-Flexofile을 사용하였다. ProFile과 ProTaper는 제조자의 지시에 따라 크라운다운법으로 근관 성형하였고, K-Flexofile은 스텝백법으로 근관 성형하였다. 근첨부 성형은 #25파일 크기까지 시행하였다. 근관 성형 전 후 이미지를 스캐너를 이용하여 얻고 Photoshop 7.0프로그램을 이용하여 중첩하였다. 이미지 분석 프로그램을 이용하여 치근단 쪽에서부터 1, 2, 3, 4, 5, 6, 7, 8, 9및 10mm부위의 내 외측 폭경 변화와 총폭경 및 근관의 중심축에 대한 근관 변위을 측정하였다. 각 부위에서 내 외측 폭경과 총폭경 및 근관 변위의 유의성 검정을 위해 one-way ANOVA분석을 시행하였으며 각 기구간의 유의성 검정은 Scheffe's test로 사후 분석하였다. 또한 기구의 변형과 파절 여부를 평가한 결과 엔진 구동형 니켈-타이타늄 파일인 ProFile과 ProTaper를 사용하여 근관성형시 수동형 스테인레스 스틸 파일인 K-Flexofile에 비해 근관의 변위를 적게 유발하고 특히 ProFile이 근관 성형시 바람직한 기구임을 시사하였다. The purpose of this study was to evaluate the canal configuration after shaping by ProFile. ProTaper and K-Flexofile in simulated resin canals with different angles of curvature. Three types of instruments were used: ProFile. ProTaper. K-Flexofile. Simulated root canals. which were made of epoxy resin. were prepared by ProFile. ProTaper with rotary instrument using a crown-down pressureless technique. and hand instrumentation was performed by K-Flexofile using a step-back technique. All simulated. canals were prepared up to size 25 file at end-point of preparation. Pre and post instrumentation images were recorded with Scanner. Assessment of canal shape was completed with Image Analysis program. Measurements were made at 1. 2. 3. 4. 5. 6. 7. 8. 9 and 10mm from the apex. At each level. outer canal width. inner canal width. total canal width. and amount of transportation from original axis were recorded. Instrument deformation and fracture were recorded. Data were analyzed by means of one-way ANOVA analysis of variance and the Sheffe's test. The result was that ProFile and ProTaper maintain original canal shape regardless of the increase of angle of curvature than K-Flexofile. ProFile show significantly less canal transportation and maintained original canal shape better than ProTaper.

위상배열기법을 이용한 치아결함 초음파이미지 진단기술개발

오윤정(Yun-Jung Oh),황인남(In-Nam Hwang),박수정(Su-Jung Park),임광희(Kwang-Hee Im),조현준(Hyun-Joon Cho),조영태(Young-Tae Cho) 한국생산제조학회 2009 한국생산제조학회지 Vol.18 No.6

Recently, researches to develop phased array ultrasonic examination techniques are proceeded to diagnose dental caries and the status of surgical operation of dental implant. Sound field analysis of phased array ultrasonic transducers were carried out in order to characterizing the ultrasonic phased array beams. The sound field of ultrasonic radiation was calculated for the sample called “gypsum-improved stone” with the similar characteristics of dental materials. Industrial phased array ultrasonic devices were utilized for the insptriion of the ariificial flaws machined in the gypsum-improved stone. Dental implants were made at the pig jaw bone and defect images were confirmed for the dental implants.

대학생의 지각된 여가능력이 여가심취도, 여가만족도, 생활만족도에 미치는 영향

박원임(Won Nim Park),문용(Yong Mun),황인남(In Nam Hwang),이한숙(Han Sook Lee),김현나(Hyun Na Kim) 한국여가레크리에이션학회 1996 한국여가레크리에이션학회지 Vol.13 No.-

The education in modern society is being asked developed human being of whole-educated man who is to seek harmonious growth of body and soul. It is obious thougth the leisure life related their each companions leisure activity that life features of a university student is most well shown. It is certern that time of leisure activity is unique one which university student in Korea for oneself can go to operate their life and free from environmental and situational stress. Perticulary, In the university life, companions leisure activity is to be opportunity which is build up experience filling up needs of self-growth adapted at the social and cultural role in the field of creative activity. It is deplored that Increasing leisure time isn`t used tea be correspond to leisure essential that Robert Huchinson warn, If man don`t destory oneself with automic bomb, man for oneself can be ruined by leisure coming from automic period and It is warned against anti-leisurization that Godbey insisted on that Even though leisure time coming into modern age increases, the true meaning leisure is going to disappear more and more, and spontaniously these situations were evidence to the contrary that cultivation of subjective leisure ability toward leisure is needed to learn the ropes in the school life preparing for a stage of social education. So, The objective of this study is to evaluate level of individual subjective leisure ability based on accomplishing smoothly leisure activity, and set free from obligation and restriction, take in efficiently influences of social, organizational and environmental constraints in pleasuring leisure time, devote in true self and value expression, and posse ability and attitude cultivating wothly life of a member of society for the future social life. According to perceived competence and control which is a central element of attributive theoretic analysis of leisure and recreation studied by Iso-Ahola(1980), this study is purposed to exemining closely a degree of influence extended to leisure and life satisfaction with sub-factors. As a result of searching casual relation among leisure ability, leisure involvement, leisure satisfaction and life satisfaction, perceived leisure competence and leisure control of university students are shown to effect directly and indirectly, but only indirect effect to life satisfaction. Also, leisure involvement and leisure satisfaction is testified to principle mediatied factors connected with leisure ability and life satisfaction of university students. As a result of analyzing correlation among whole factors, Leisure competence of university student is proved to correlating with very high leisure control(r=.653), leisure involvement(r=.317), and leisure satisfaction(r=.247), whereas, not correlated with life satisfaction(r=.047). Also, leisure control correlated with high leisure involvement(r=.277), leisure satisfaction(r=.187), but not correlated with life satisfaction(r=.033).