티타늄 임플란트의 표면처리가 골유착에 미치는 영향에 관한 조직형태계측학적 연구

최웅재,조인호,Choi, Woong-Jae,Cho, In-Ho 대한치과보철학회 2009 대한치과보철학회지 Vol.47 No.4

연구목적: 임플란트를 이용한 수복의 임상적인 성공에 중요한 역할을 하는 초기 골유착의 향상을 위해 티타늄의 표면 거칠기 조절과 함께 생체활성도를 가진 표면으로 변화시키는 방법에 관한 연구가 이루어지고 있다. 표면 거칠기의 적절한 증가는 조골세포의 활동을 증가시키고 골과 임플란트의 접촉과 유지를 촉진시킨다고 보고되고 있고 또한 알칼리와 열처리를 통하여 생체 활성 표면을 얻을 수 있는 것으로 보고되고 있다. 이에 본 연구에서는 알칼리 및 열을 이용한 티타늄 표면 처리가 골유착에 어떤 영향을 미치는지 알아보고자 하였다. 연구재료 및 방법: 기계절삭된 임플란트를 대조군으로 하여 (1군), 5 M NaOH 용액에 처리한 임플란트를 대기 중에서 열처리한 군 (2군)과 진공에서 열처리한 군 (3군)으로 분류하였다. 알칼리와 열처리를 시행한 임플란트들의 표면 특성을 관찰하고 가토에 식립하여 치유 기간에 따라서 조직학적 및 조직형태계측학적으로 비교하고 EPMA (Electron Probe Micro Analyzer)를 이용하여 치유 기간 별 골성분의 변화를 분석하였다. 결과 및 결론: 대기 중에서 열처리한 2군이 통계적으로 유의하게 (P<.05) 증가된 표면 거칠기를 보였다. 이렇게 만들어진 임플란트를 가토에 식립하여 조직 형태계측학적 분석을 시행한 결과 골-임플란트 접촉율은 전반적으로 치유기간이 경과하면서 증가하는 것으로 나타났으며 2군과 3군에서 통계적 분석결과 치유기간 간에 유의한 차이가 관찰되었고 (P<.05), 골-임플란트 면적율 (BA) 또한 골 임플란트 접촉율과 비슷한 양상을 보였으며 통계적 분석결과 2군에서만 치유기간별로 통계적으로 유의한 차이가 관찰되었다 (P<.05). 치유 기간별로 임플란트 주변 골에서 칼륨 (K), 인 (P), 칼슘 (Ca), 티타늄 (Ti)의 분포를 EPMA로 보았을 때 빈도의 편향은 관찰되지 않았으며 2군과 3군에서 초기에 칼슘과 인이 증가되는 것이 관찰되었다. 이상의 결과로 볼 때 알칼리 및 대기 중에서 열처리로 표면 처리된 임플란트의 사용은 초기에 안정된 골유착에 도움을 주며 임플란트 식립 후 기능까지의 시간을 감소시킬 것으로 사료된다. Statement of problem: Many studies have been conducted to improve the primary stability of implants by providing bioactive surfaces via surface treatments. Increase of surface roughness may increase osteoblast activity and promote stronger bonding between bone and implant surface and it has been reported that bioactive surface or titanium can be obtained through alkali and heat treatment. Purpose: The purpose of this study was to evaluate the stability of alkali and heat treated implants via histomorphometric analysis. Material and methods: Specimens were divided into three groups; group 1 was the control group with machined surface, the other groups were treated for 24 hours in 5 M NaOH solution and heat treated for 1 hour at $600^{\circ}C$ in the atmosphere (group 2) and vacuum (group 3) conditions respectively. Surface characteristics were analyzed and fixtures were implanted into rabbits. The specimens were histologically and histomorphometrically compared according to healing periods and change in bone composition were analyzed with EPMA (Electron Probe Micro Analyzer). Results: 1. Groups treated with alkali and heat showed increase of oxidization layer and Na ions. Groups 2 which was heat treated in atmosphere showed significant increase of surface roughness (P<.05). 2. Histomorphometric analysis showed significant increase in BIC (bone to implant contact) according to increase in healing period and there was significant increases in groups 2 and 3 (P<.05). 3. BA(bone area) ratio showed similar results as contact ratio, but according to statistical analysis there was significant increase according to increase in healing period in group 2 only (P<.05). 4. EPMA analysis revealed no difference in gradation of bone composition of K, P, Ca, Ti in surrounding bone of implants according to healing periods but groups 2 and 3 showed increase of Ca and P in the initial stages. Conclusion: From the results above, it can be considered that alkali and heat treated implants in the atmosphere have advantages in osseointegration in early stages and may decrease the time interval between implantation and functional adaptation.

장병 여가문화의 시대적 변천사

최웅재(Woong Jae Choi),최장호(Jang Ho Choi) 한국사회체육학회 2008 한국사회체육학회지 Vol.0 No.32

대학축구동아리활동 참여가 생활만족과 친사회적 행동에 미치는 영향

최웅재(Woong Jae Choi),최장호(Jang Ho Choi) 한국사회체육학회 2012 한국사회체육학회지 Vol.0 No.47

The purpose of this study is to investigate the influence of life satisfaction and pro-social behavior on participation in College football club activities. For the above study purposes, college football clubs in Jeon buk-Do province has selected the five schools were selected 290 players and activities. This Analysis was used frequency analysis, reliability analysis, correlation analysis and simple regression analysis. The results of analyses were as follows: University football club activities had greater effect between life satisfaction and safeguard of lower variables for pro-social based on, such factors as a schoolmate relationship, the faculty relationship effected on the pro-social behavior in order. Also, between life satisfaction and help of lower variables for pro-social based on, such factors as the faculty relationship and a school event effected on the pro-social behavior in order. And, between life satisfaction and cooperating of lower variables for pro-social based on, such factors as a ruleobservance effected on the pro-social behavior in order. And, between life satisfaction and response of lower variables for pro-social based on, such factors as a schoolmate relationship effected on the pro-social behavior in order. Final, between life satisfaction and kindly of lower variables for pro-social based on, such factors as a college life, faculty relationship, a school event effected on the pro-social behavior in order.

대학 교양체육의 만족요인에 관한 연구 -스키,스노보드캠프를 중심으로

최웅재 ( Woong Jae Choi ) 한국학교체육학회 2006 한국학교 체육학회지 Vol.16 No.1

에너지소비량에 따른 단기간의 고강도 운동이 면역세포에 미치는 영향

최웅재(Woong Jae Choi),조중연(Jung Yeon Cho) 한국사회체육학회 2011 한국사회체육학회지 Vol.0 No.46

The purpose of the study was to examine changes of immunocyte made at consumption of 300 kcal and 600 kcal when taking exercise at V·O2max 70%, and to suggest proper exercise intensity as well as exercise quantity to promote health and to maximize exercise effects. The subjects were 15 persons. The study measured V·O2max of each person and substituted METs at exercise intensity of both V·O2max 70% in accordance with energy consumption formula to set exercise time at energy consumption of both 300 kcal and 600 kcal. And, the study substituted inclination and rate at exercise intensity of V·O2max 70% that was measured at preliminary test. The immunocyte reaction varied depending upon aerobic exercise intensity as well as exercise quantity as follow: T cell and NK cell varied depending upon aerobic exercise to have no significant difference of exercise intensity at relative ratio of T lymphocyte of all of lymphocytes and to have significant difference of exercise quantity interaction(p<.05). And, at subsequent verification, the exercise quantity at exercise intensity of V·O2max 70% was lower(T cell) and higher(NK cell) at 600 kcal than it was at stability. B cell varied depending upon aerobic exercise to have no significant difference of exercise intensity at relative ratio of B lymphocyte of all of lymphocytes and to have significant difference of exercise quantity. And, at subsequent verification, the exercise quantity at exercise intensity of V·O2max 70% was lower at 600 kcal than it was at stability. The findings were as follow: To set proper exercise intensity as well as exercise quantity, common people were demanded to do mid intensity exercise not exceeding 1 hour and to limit exercise quantity, in other words, exercise time of each individual, within approximate 30 minutes even at high exercise intensity.

대학태권도 지도자의 리더십이 선수들의 몰입경험에 미치는 영향

최웅재(Woong-Jae Choi),이창민(Chang-Min Lee) 한국무예학회 2011 무예연구 Vol.5 No.1

본 연구는 대학태권도 지도자의 리더십과 선수들의 몰입 경험의 관계를 규명하여 지도자들이 선수 개개인의 특성과 상황에 따라 지도함으로써 태권도의 경기력 향상을 목적으로 실시하였다. 연구의 대상자는 한국대학태권도연맹이 2010년 4월에 주최한 ‘제 37회 전국대학태권도개인선수권 대회’에 참가한 선수들을 모집단으로 선정하여 불성실하고 신뢰성이 떨어지는 것을 제외한 총 287명을 분석대상으로 하였다. 자료 분석은 통계전용 프로그램인 SPSS 12.0 for Window을 이용 하여 처리하였다. 적용된 분석 방법은 빈도분석(Frequency Analysis), 신뢰도 분석(Reliability Analysis), t-test, one-way ANOVA, 상관관계(Correlation Analysis) 그리고 다중회귀분석(Multiple regression)을 실시하였다. 이와 같은 절차를 통하여 다음과 같은 결론을 얻었다. 첫째, 남자 태권도 선수들이 인지 몰입과 행위 몰입에서 여자 선수들 보다 높다. 둘째, 비우수 선수가 인지 몰입과 행위 몰입에서 우수 선수 보다 높다. 셋째, 고학년 일수록 몰입 경험이 높다. 넷째, 대학태권도 지도자의 민주적 행동이 인지 몰입에 가장 많은 영향을 미친다. 다섯째, 대학태권도 지도자의 사회적지지가 행위 몰입에 가장 많은 영향을 미친다. This study was conducted to improve the performance of players by figuring out the relationship between the University Taekwondo coach’s leadership and their players’ flow experience and by training them according to their individuality and situation. In regard of the subjects of this research, the population was the players who had participated in ‘the 31st National Taekwondo Match for the Chairman Pennant of the Korea University Federation’ held in September of 2008 sponsored by Korea University Taekwondo Federation. Among the data, excluding the ones that were not faithful and reliable, this paper selected total 287 to be analyzed. For analysis, an exclusive statistic program, SPSS 12.0 for Window, was used to process them. The methods for analysis include frequency analysis, reliability analysis, t-test, one-way ANOVA, correlation analysis, and multiple regression. Through the procedures, the following results are found. First, male Taekwondo players showed higher cognitive and behavioral flow than female ones. Second, non-excellent players indicated higher cognitive and behavioral flow than excellent ones. Third, as the grade of the players became higher, they had more flow experience. Fourth, the university Taekwondo coach’s democratic behavior affected cognitive flow the most. Fifth, the university Taekwondo coach’s social support influenced behavioral flow the most.

축구지도자의 변혁적 리더십이 집단응집력에 미치는 영향

최웅재 ( Woong Jae Choi ),이창민 ( Chang Min Lee ) 한국학교체육학회 2006 한국학교 체육학회지 Vol.16 No.1

대학태권도동아리 참가자특성에 따른 여가만족 및 조직몰입의 관계

최웅재(Woong Jae Choi),오방균(Bang Kyun Oh),이남용(Nam Yong Lee) 한국사회체육학회 2013 한국사회체육학회지 Vol.0 No.51

The purpose of this study was to examine the relation of organi zational commitment on leisure satisfaction of Taekwondo club activities participation in university. In order to achieve this task, surveyed 317 college students; a sking them questions related to their lei - sure satisfaction(mentality, environment, relaxation, physical, social, education) and organizational commitment(emotional, continuous, normative). These questions were asked to the random sample of college students to measure the reliability and propriety of the studen t feelings and to find the average and the range of the different response that were collected. The results of this experiment were as follows: Firstly, there were partially statistical difference in there type(①sex distinction, ②academic year, ③participation period) among leisure satisfaction and organizational commitment. Leisure satisfaction were statistical difference sex distinction, and organizational commitment (emoti onal commitment, continuous commitment, normative commitment) were partially statistical difference of all variable. Secondly, there were partially in causal relation with leisure satisfaction and organizational commitment.

특수 직업군의 여가문화 활동과 정책방향

최웅재(Woong Jae Choi) 한국사회체육학회 2012 한국사회체육학회지 Vol.0 No.48

The purpose of this study is to search for a system that enables the Korean youth-who are the most active yet under the strict regulations of the army-to maintain the social nature and at the same time encourage them to exert their combat capabilities through the leisure cultural activities in the military. The conclusions were as follows: First, It has been analyzed that ``the establishment of a complete legal system and the policy switch should be realized by the social groups and the advanced unit``. Second, it was required that development and spread exercise program for military army. Final, At this point of time, it is necessary for the military commanders to take a forward-looking attitude towards the universalization of the leisure cultural activities in the army. It should be reminded that the fighting power comes from the each individual soldier`s attitude of mind as well as the physical activities in the military life.

여성 노인의 인구사회학적 특성과 신체구성 및 체력요인과의 관련성

최웅재(Woong Jae Choi),김석희(Seok Hee Kim) 한국여성체육학회 2008 한국여성체육학회지 Vol.22 No.5