HIV-1 gag-pol fusion 단백질의 합성에 중요한 stem-loop RNA motif에 결합하는 oligonucleotide의 선별

신의수 청주대학교 대학원 2008 국내석사

RNA molecules binding to a stem-loop RNA(hairpin RNA) which has an important role in the synthesis of gag-pol fusion protein in Human Immunodeficiency Virus Type 1(HIV-1), were selected from the library having 30-mer random sequence using SELEX(Systematic Evolution of Ligands by EXponential enrichment). It was identified that many RNA aptamers which were selected, have conserved sequence motifs such as AAGGGA and GUUGAU with CLUSTAL W(1.83) multiple sequence alignment. The secondary structure models of RNA aptamers 12-1-5, 13-1-3 and 13-1-15 were predicted using RNA mFold algorithm and confirmed with three structure specific enzymes such as nuclease S1, RNase V1 and RNase T1. Conseved sequence motif, AAGGGA was extended in the single and double stranded region in three secondary structure models but conserved sequence motif, GUUGAU was in the double stranded region having a bulge. Potential regions participating in the interaction between RNA aptamer and stem-loop RNA ligand were determined by footprinting, using nuclease S1(specific to single-stranded regions), RNase V1(specific to double-stranded regions) and RNase T1(specific to guanine in single-stranded regions). Nucleotide A10 in RNA aptamer 12-1-5 became more susceptible to nuclease S1 in the presence of a stem-loop RNA ligand than in the presence of RNA aptamer 12-1-15 alone, suggesting that this nucleotide was liberated from intramolecular interaction and became more accessible to nuclease S1 in solution on forming a complex with a stem-loop RNA ligand. Sequence A6AU8 in RNA aptamer 13-1-15 became more susceptible to RNase V1 in the presence 13-1-15 alone, suggesting that this sequence was stacked or in double-stranded region from intramolecular interaction and became more accessible to RNase V1 in solution on forming a complex with a stem-loop RNA ligand.

노인학교의 교육실태에 관한 연구 : 청주시를 중심으로

신의수 청주대학교 행정대학원 1997 국내석사

The problems tackled in this dissertation are the educational conditions of four schools for the aged in Chongju city. The point at issue is that the problem of the aged is regarded as a social problem. On the assumption that the various problems of the aged have social issues, I study educational goals, contents, methods in schools for the aged in Chongju city. And I try to find desirable alternatives about them. At present, many older people in Chongju are experiencing economic difficulties, becoming alienated and being faced with psychological feelings of inferiority. Nowadays it is widely recognized that the most important cause of the problems of the elderly is the degeneration of the ethics of respect for the aged and filial conduct toward parents. Therefore, the stratagy is that the problems of the aged can be solved by strengthening and practicing such ethics within a personal or familial dimension. but in an industrialized society, it is difficult for older people to rely on their offspring for their life's security. It is natural that the existing type of filial conduct, based on an agricultural society, should be changed to accommodate changes in present social structure. It should be a familial job to provide parents with emotional comfort, and the government should play a main role in solving the financial problems of the aged. From this perspective, I would like to recommend the drastic reformation of schools for the aged. In the concrete, first, the educational goal in school for the aged should be set including a life long education and leisure time management of older people. Second, for the desirable educational programs which meet the aged wishes, we need to analyze that programs. Third, in order to get the fruits of the education, we must select the contents of education harmonized with the levels of students in that school. Fourth, for educational methods direct participation of the students rather than a lecture, and appropriate use of audio-visual materials, are needed. Fifth, at present, the management of school for the aged is run by an amateur. Therefore, a social welfare professional should run the school, and develop the educational programs. Sixth, according to the preceding descriptions, we should establish a closer cooperation systems among the Department of Health and Welfare, the Department of Education and Department of Labor, etc. Finally, we need to study the actual conditions of schools for the aged all over the country for their development.

무도 전방낙법 동작 시 신체분절에 대한 생체역학적 분석

신의수 忠南大學校 大學院 2014 국내박사

The purpose of this study was to provide basic quantitative data to minimize the injury occurring during forward breakfall by the comparative analysis of biomechanical factors through 3D motion analysis, analysis of ground reaction force, and EMG analysis of the forward breakfall of the martial arts targeting 10 skilled and 10 unskilled subjects. The following are the findings. First, the total time taken for forward breakfall of the martial arts showed 1.53±0.04 s for skilled, and 1.41±0.06 s for unskilled subjects (p<.01). Second, forward breakfall of the martial arts operation showed significant left and right position of center of mass in phase 2(p<.01), phase 3(p<.01), and phase 4 (p<.001). In addition, the unskilled subjects showed larger forward and rearward position in phase 1(p<.01), phase 2(p<.001), phase 3(p<.05), and phase 4(p<.001), while the skilled subjects showed larger vertical position in phase 2(p<.05). And the unskilled subjects showed faster forward and rear movement of center of mass in phase 2(p<.05), phase 3(p<.01), and phase 4(p<.05), respectively. And unskilled subjects sowed faster vertical velocity of center of mass in phase 2(p<.05) and phase 3(p<.5). Third, as for the upper extremity joint angle during forward breakfall, skilled subjects showed larger right shoulder joint angle in phase 4(p<.05), and unskilled subjects showed larger left shoulder joint angle in phase 2(p<.01) and phase 3(p<.001). Unskilled subjects showed greater elbow joint angle both right and left side in phase 1(right: p<.001, left: p<.001) and phase 3(right: p<.001, left: p<.01), and skilled subjects demonstrated larger wrist joint angle both right(p<.01) and left (p<.001) side in phase 1. And among the upper extremity joints, the angular velocity of the shoulder joint and wrist joint did not show any difference between right and left side, but the skilled subjects showed faster angular velocity of the elbow joint both right and left side in phase 2(right: p<.05, left: p<.05) and phase 3(right: p<.01, left: p<.01). Fourth, during forward breakfall of the martial arts, the skilled subjects came up with significantly faster impact velocity in the primary point of impact (E2) (p<.001), but the unskilled subjects showed significantly faster impact velocity in the secondary point of impact (E3) (p<.001). Fifth, the forward breakfall of the martial arts did not show any difference between left and right side in the reaction force, but unskilled subjects proved a significantly greater forward and backward reaction force in the secondary point of impact(E3) both right and left sides(right: p<.01, left: p<.001). The skilled subjects showed a significantly greater vertical reaction force in the primary point of impact(E2) (right: p<.001, left: p<.001), and unskilled subjects showed a larger vertical reaction force in the secondary point of impact (E3), respectively(right: p<.01, left: p<.05). Sixth, during the forward breakfall of the martial arts operation, there was no difference in the phase-specific muscle activity(percent maximum voluntary contraction(% MVC)) due to the eccentric muscle contraction of the left and right deltoid, left and right upper arm triceps brachii, left and right pectoralis major, and left and right erector spinae.

무도수련생의 수련종목에 따른 수련참여동기 비교분석

신의수 용인대학교 2010 국내석사

본 연구는 무도종목중 합기도, 태권도, 유도, 검도 도장의 수련생들을 통해 인내, 극기, 호신, 용기, 예의 등으로 유추해 볼 수 있는 무도수련의 참여동기를 비교분석 함으로써 각 종목별 수련생들이 어떤 요소를 고려하여 수련에 참여하고 있는가를 파악하고 이를 이용하여 다양한 수련생의 요구에 부응하는 수련프로그램을 연구, 개발할 수 있도록 하는데 의의가 있다. 본 연구의 대상은 2009년 12월 D시 소재의 무도(합기도, 태권도, 유도, 검도)도장에서 수련을 하고 있는 10세 이상의 수련생을 모집단으로 선정하고 편의표집법(convenience sampling) 을 이용하여 250부의 설문지를 배포하고 자기평가기입법(Self-administrated Method)으로 응답하도록 한 후 유효한 자료만을 부호화 한 후 SPSS WIN Program Version 12.0을 이용하였다. 그 결과는 다음과 같다. 첫째, 무도종목별 수련생의 참여동기는 통계적으로 유의한 차이가 나타났으며 사후분석 결과 호신․건강․예의․성격형성 동기에서 합기도가 태권도, 유도, 검도에 비해 높은 평균값을 보여 합기도 수련생이 타 종목 수련생에 비해 호신․건강․예의․성격형성 동기가 높은 것으로 나타났으며, 사교․성취 동기는 합기도가 유도, 검도에 비해 높은 평균값을 나타냈고, 건강동기는 태권도가 유도에 비해 높은 평균값을 보였으며, 사교․성취․예의․성격형성 동기는 태권도가 유도, 검도에 비해 높은 참여동기를 나타냈다. 둘째, 성별 무도수련 참여동기는 통계적으로 유의한 차이가 없었지만, 무도종목별 수련생의 성별 건강동기는 태권도종목 여자가 남자보다 높은 참여동기를 나타냈고, 성취동기는 합기도종목 남자가 여자보다 높은 참여동기를 나타냈다. 예의동기는 검도종목 남자가 여자보다 높은 참여동기를 나타냈고, 성격형성동기는 검도종목 남자가 여자보다 높은 참여동기를 나타냈다. 셋째, 수준별 무도수련 참여동기는 초등부에서 호신, 건강, 사교, 예의, 성격형성 동기가 유의한 차이가 나타났다. 중등부는 건강, 예의, 성격형성 동기가 유의한 차이를 나타냈고, 고등부는 호신, 건강, 사교, 성취, 성격형성에서 유의한 차이를 나타냈다. 성인부는 사교, 예의, 성격형성에서 유의한 차이를 나타냈다. 초등부, 중등부, 고등부, 성인부의 각 수준별 수련참여동기에는 차이가 있었다. 넷째, 수련기간별 무도수련 참여동기는 건강, 사교, 성취 동기에서 유의한 차이가 나타났고 2년이상의 수련생들이 호신, 건강, 사교, 성취, 예의, 성격형성 등 6가지 구인 모두 6개월미만, 6개월이상 1년미만, 1년이상 2년미만의 수련생들 보다 높은 참여동기를 나타냈다. The purpose of this study is to conduct a comparative analysis of the participation motivation of martial arts training possible to infer through factors as perseverance, self-restraint, self-defense, courage, and courtesy of trainees of martial arts in Hapkido, Taekwondo, Judo, and Kumdo dojos. Through such an analysis, the study will investigate which factors are considered for participation each martial arts event in order to research and develop training programs which respond to the various demands of trainees. The subjects of this study were trainees over 10 years of age training in a martial arts (Hapkido, Taekwondo, Judo, Kumdo) dojo located in D city during December, 2009. Convenience sampling was used to distribute 250 surveys were answered through self-administrated method. Valid data was collected and encoded for statistical analysis using SPSS WIN Program Version 12.0. The results of the study are as follows. First a statistically significant result was shown in the participation motivation of trainees by martial arts event. The results of post analysis shows that as for self-defense․health․courtesy․personality formation motivations, Hapkido showed a higher average value compared to Taekwondo, Judo, and Kumdo, demonstratiapkihat Hapkido trainees had higher self-defense․health․courtesy․personality formation motivationskihan other martial arts events. For sociality․attainment motivation, Hapkido showed a higher average ihan Judo and Kumdo. For health motivation, Taekwondo showed a higher average ihan judo while Taekwondo also showed a higher average ihan Judo and Kumdo for sociality․attainment․courtesy․personality formation motivations. Second, participation motivation for martial arts training did not show a statistically significant result by sex. The health motivation by sex of trainees showed that for Taekwondo, females displayed higher participation motivation than males. For attainment motivation, males showed higher participation motivation than females in Hapkido. For courtesy and personality formation motivations, males in Kumdo showed higher participation motivation than females. Third, for participation motivation in martial arts by level, a statistically significant difference was shown self-defense, health, sociality, courtesy, and personality formation motivations in elementary school. In middle school, health, courtesy and personality formation motivations showed a statistically significant difference while in high school, self-defense, health, sociality, attainment, and personality formation showed a statistically significant difference. For adults, sociality, courtesy, and personality formation motivations showed a statistically significant difference. Additionally, there were differences in participation motivation by level for all elementary, middle school, high school, and adult categories. Fourth, for participation motivation by duration of practice, health, sociality, and attainment motivations showed a statistically significant difference. For trainees who have trained over 2 years, all six factors of self-defense, health, sociality, attainment, courtesy, and personality formation showed higher participation motivation levels compared to those training for under 6 months, over 6 months, under 1 year, over 1 year, and under 2 years.

주된일자리 퇴직자의 퇴직행동이 진로의사결정, 행동함정, 진로전환에 미치는 영향

신의수 경기대학교 대학원 2019 국내박사

This study analyzed how strategies and retirement behavior of the late 40s and early 50s generations who retire from main jobs responding to the change in the job market affect career decision-making, behavioral traps, and career transition amid the fourth industrial revolution. It has an implication that it provides policy basic data for vocational studies helping active job transition in the rapidly changing labor market by proposing behavioral trap identified in decision-making when these generations who face the shift in the cycle of job and life convert careers. This study was began with the question that what behavioral trap of these generation retiring from main jobs is and how they are correlated. This study explored 40-50 generations who worked in the same company for more than a decade or who experienced retirement after working in the same company for more than a decade even if they transferred a couple of companies. The research model used in this study is qualitative research by using an interview, which is a phenomenal method and sequential integrated design method that conducts tests with quantitative research based this result was adopted in this study. Research I used semi-structured questionnaires among 12 participants including six of the 40s and six of the 50s. Research II conducted survey as quantitative research by using Internet webpage among 311 participants who experienced retirement from main jobs as topic analysis results of interview are identified. In total, 304 participants were set as final analysis targets except for seven participants who submitted unfaithful responses. Independent sample t-test, influential analysis, model suitability analysis, and effect analysis were performed to test the difference between behavioral traps and career transition according to retirement behaviors and ages in main jobs. Statistical programs such as SPSS version 20 and R program lavaan package were used for empirical analysis. Results from this study that integrated qualitative research with quantitative research are shown as follows. First, topic analysis of retirees of 40s and 50s generations showed that retirement behavior consists of spontaneity and non-spontaneity and behavioral traps consists of ten traps such as overconfidence trap, confirming confidence trap, illusion trap, anchoring trap, collective trap, sunk-cost trap, status quo trap, deterioration trap, prudence trap, and hindsight trap. Career decision-making was reasonable, intuitive, and dependent. Career transitions was career-leading and career compromising. Second, these generations showed the difference in retirement behavior, career decision-making, and career transition. Third, a reference point and weights of career decision-making after retirement varied according to personal value and willingness. The prior point of the reference point of career decision-making was primarily economic income under the situation of being responsible for supporting family. In addition, internal values such as their own happiness and pleasure were taken in priories. As age increases, they took internal value as an internal value rather than external value such as income and promotion. Career decision-making weight is influenced by their own will and surroundings. This indicates that people with 40s are challenging and achieved promising career transition than 50s. Fourth, behavioral traps fixed or appeared variously as people get older and most lowered adaptability on environment change. Fifth, there are positive and negative behavioral traps shown in the process of career decision-making. Overconfidence and illusion traps conspicuous in people with 40s tend to serve positively in case of career transition and function as good work that supports 40s to actively participate in start-up and re-employment. On the contrary, status quo trap and deterioration trap mainly shown in 50s tends to avoid risks and pursue stability when they make career decision under this unstable situation. Thus, they interrupted career transition. Sixth, a single trap appears or a series of other traps are towed when they are fixed as each behavioral trap is interconnected. Seventh, the process of career decision-making was classified into reasonable, intuitive, and dependent. Reasonable was planned, analytic, active, and responsive. Intuitive encompasses impulsive, unplanned, subjective, and emotional. Dependent relies on advice and consultations from others. Yet intuitive decision-making is simultaneously presented both in reasonable and dependent. Dependent showed similarly regardless of age. Meanwhile, career-leading on career transition is characterized by planned, long-term, and active features. Career-compromising is characterized by inactive, accidental, and non-subjective features. In addition, reasonable career decision-making was found to show leading career transition. Eight, hypothetical models of retirement behavior, career decision-making, behavioral traps, and career transition were verified. 40s voluntarily retired from main jobs. behavioral traps showed overconfidence trap and illusion trap. Mainly they converted career-leading jobs such as start-up. In contrast, 50s involuntarily retired from main jobs and reasonable, intuitive, and dependant career decision-makings were similar. Status quo traps were more appeared than 40s, while overconfidence was shown little. This research result I was constituted as a hypothetical model and tested in research II. Ninth, retirement behavior was found to affect by the medium variables to dependent variables such as career-leading and career-compromising career transition. 본 연구는 4차 혁명이 진행되고 있는 가운데 주된일자리에서 퇴직하는 40대 후반과 50대 초반의 세대가 직업시장에서 나타나는 변화에 대처하는 전략과 행동, 주된일자리 퇴직시에 퇴직행동이 진로의사결정, 행동함정, 진로전환에 어떻게 영향을 미치는지에 대하여 분석하였다. 진로생애주기에서 변화를 맞이한 4050세대가 진로전환시 의사결정에서 나타난 행동함정을 제시함으로써 급변하는 노동시장에서 능동적으로 진로전환을 할 수 있도록 돕는 직업학의 정책적 기초자료를 제공함에 그 의의가 있으며, 주된일자리에서 퇴직하는 4050세대의 행동함정은 무엇이며 어떠한 상관관계가 있을까? 라는 문제의식을 갖고 연구를 시작하였다. 본 연구에서는 한 직장에서 10년 이상 근속하였거나 여러 직장을 이직하였더라도 동일 직무에 10년 이상 일한 후 퇴직한 경험이 있는 4050세대를 대상으로 탐색하였다. 본 연구 모형은 현상학적인 연구방법인 면담법을 이용한 질적 연구로 주제 분석을 하고 그 결과를 토대로 양적연구로 검증하는 순차적 통합설계방식을 선택하였다. 연구Ⅰ에서는 40대 6명과 50대 6명 등 총 12명을 연구대상으로 반구조화 질문지를 사용하였다. 연구 Ⅱ에서는 양적연구로 면담법의 주제 분석 결과를 확인하는 방식으로 주된 일자리 퇴직을 경험한 311명을 대상으로 인터넷 웹페이지를 이용한 설문을 실시하였고, 이중 불성실한 응답을 한 7명을 제외하고 총 304명을 최종 분석대상으로 하였다. 주된일자리에서 퇴직행동, 연령별 행동함정과 진로전환의 차이 검증을 위하여 독립표본 t 검증, 영향분석, 모형적합도분석, 효과분석 등을 수행하였다. 실증적 분석을 위해 사용한 통계 프로그램은 SPSS for Windows 20.0과 R 프로그램의 lavaan 패키지이다. 질적연구와 양적연구를 통합해 본 연구의 결과는 다음과 같다. 첫 번째, 4050세대 퇴직자의 주제분석한 결과, 퇴직행동은 자발적 및 비자발적, 행동함정은 과신함정, 확인증거함정, 착각함정, 정착함정, 집단함정, 매몰비용함정, 현상유지함정, 악화함정, 신중함정, 사후판단함정 등 10가지로 구성되었다. 진로의사결정은 합리적, 직관적, 의존적 등이며, 진로전환은 진로주도 및 진로타협 등으로 나타났다. 두 번째, 40대와 50대는 퇴직행동, 진로의사결정, 행동함정, 진로전환 등에 차이를 보였다. 40대는 50대에 비해 자발적 퇴직 비율이 높으며, 자발적 퇴직자의 경우에는 진로의사결정에 대해 합리적, 직관적 의사결정을 하는 것으로 나타났다. 이에 비해 비자발적 퇴직자의 경우에는 진로에 대해 의존적 의사결정을 하였다. 또한 진로전환시에는 40대 자발적 퇴직자들이 진로주도적 진로전환을 하였고 50대 비자발적 퇴직자들은 진로타협적 진로전환을 하였다. 세 번째, 퇴직 후 진로의사결정 준거점과 가중치는 개인적 가치관과 의지에 따라 차이가 있었다. 진로의사결정 준거점의 가장 우선적인 점은 가족부양을 책임지고 있는 상황에서 대부분 경제적 수입이다. 또한, 그 다음은 자신의 행복과 즐거움 같은 내재적 가치를 더 우선한 경우이며 연령이 증가할수록 수입, 승진 등 외재적가치 보다는 내재적 가치를 준거점으로 삼았다. 진로의사결정 가중치는 본인의 의지와 주변 환경의 영향을 받았으며 40대가 50대보다 도전적이며 진취적인 진로전환을 하였다. 네 번째, 행동함정은 연령이 높아질수록 고착화하거나 다양하게 나타나며 대부분 환경 변화에 대한 적응력을 낮추는 것으로 나타났다. 다섯 번째, 진로의사결정 과정에서 나타나는 행동함정은 긍정적인 것과 부정적인 것이 존재한다. 40대에 주로 나타나는 과신함정과 착각함정들은 진로전환시 긍정적으로 작용하는 경향이 있어 40대의 창업과 재취업에 주도적 참여를 지원하는 순기능으로 작용하고 있다. 반면, 50대에는 주로 나타나는 현상유지함정과 악화함정들은 불안한 상황 하에서 진로의사를 결정할 때 현상유지함정은 위험을 회피하고 안정을 추구하는 경향이 있어 주도적 진로전환을 방해하였다. 여섯 번째, 각각의 행동함정은 상호 관련되어 있어 하나의 함정이 나타나거나 고착화 되면 다른 함정들이 연쇄적으로 견인하는 경향이 있다. 일곱 번째, 진로의사결정 과정에서 합리적, 직관적, 의존적 등으로 구분하였다. 합리적은 계획적, 분석적, 능동적, 반응적이며, 직관적은 충동적, 무계획적, 주관적, 감정적이고, 의존적은 타인의 충고 및 조언에 의지한다. 그러나 직관적 의사결정은 합리적 및 의존적 모두에서 동시에 작용하기도 하며 의존적은 연령과 상관없이 비슷하게 나타났다. 한편 진로전환에 대한 진로주도는 계획적, 장기적, 적극적 특징을 나타내며 진로타협은 소극적, 우연적, 비주관적 특징을 나타낸다. 또한 합리적 진로의사결정은 주도적 진로전환을 하는 것으로 나타났다. 여덟 번째, 연령별 퇴직행동, 진로의사결정, 행동함정, 진로전환의 가설적 모형은 검증되었다. 40대는 주된일자리에서 자발적 퇴직을 하였으며 행동함정으로는 과신함정과 착각함정이 나타났고, 대체로 창업 등 진로주도적 진로전환을 하였다. 반면, 50대는 주된일자리에서 비자발적 퇴직을 하였으며 합리적, 직관적, 의존적 진로의사결정이 비슷하게 나타났다. 현상유지함정이 40대에 비해 많이 나타났으며 반면에 과신함정은 적게 나타났다. 이러한 연구결과 Ⅰ을 가설적 모형으로 구성하여 연구 Ⅱ에서 검증하였다. 아홉 번째, 퇴직행동은 종속변수인 진로전환에 매개변인을 통해서만 영향을 미치는 것으로 나타났다.

지르코니아 표면에서 브라켓의 전단결합강도에 표면처리가 미치는 영향

신의수 고려대학교 임상치의학대학원 2013 국내석사

이번 연구는 지르코니아에 교정용 브라켓을 접착시킬 경우 지르코니아의 표면에 전처치로 sandblasting을 할 때, 불산에칭 후 silane을 도포하는 방법, silica coated A2O3를 사용하여 silica coating한 후 silane을 도포하는 방법, 그리고 10-methacryloyloxydecyl dihydrogen phosphate monomer (MDP)가 함유된 silane coupling agent를 도포하는 방법들 간의 전단결합강도를 비교하고 접착파괴의 양상을 평가하고자 하였다. 지르코니아 (Prettau, Zirkonzahn, Gais, Italy)는 직경10 mm ⅹ 높이10 mm의 원기둥모양으로 100개를 준비하였고 시편들은 각 20개씩 5개의 실험군으로 임의로 나누고 sandblasting은 50 ㎛ A2O3를, silica coating은 30㎛ silica coated A2O3 (CoJet Sand, 3M ESPE, St. Paul, USA)를 사용했고 silane primer (ESPE Sil, 3M ESPE, St. Paul, USA), MDP and silane coupling agent (Clearfil Ceramic primer, Kuraray Medical Inc, Kurashiki, Japan)를 사용하였다. 각 그룹별 전처치는 대조군 (sandblasting + 불산 에칭 + silane primer), SBSIL군 (sandblasting + silane primer), SBMS군 (sandblasting + MDP containing silane coupling agent), COSIL군 (silica coating + silane primer), COMS군 (silica coating + MDP containing silane coupling agent)로 하였다. 표면처리 후 금속 교정용 브라켓(Gemini, 3M Unitek, Monrovia, USA)을 교정용 접착레진(Transbond XT, 3M Unitek, Monrovia, USA)으로 붙이고 24시간동안 37℃의 증류수에 보관한 후 전단결합강도(shear bond strength, SBS)와 접착제잔량지수 (adhesive remnant index, ARI)를 측정하여 다음과 같은 결과를 얻었다. COMS군 (21.79 ± 1.03 MPa)과 SBMS군 (20.65 ± 5.35 MPa)의 전단결합강도가 COSIL군 (14.45 ± 4.22 MPa)보다 유의하게 높았고 COSIL군보다 대조군 (6.75 ± 0.46 MPa)과 SBSIL군 (7.58 ± 3.09 MPa)이 유의하게 낮았다.(P < 0.001) 접착파절양상은 대조군, SBSIL군, COSIL군은 80%이상에서 지르코니아와 접착제간의 접착계면 파절양상을 보이고 SBMS군, COMS군은 응집파괴 양상을 보였다. 이상의 결과로 브라켓을 접착시킬 때 지르코니아 표면에 불산에칭은 큰 효과가 없는 것에 반해 silica coating과 MDP containing silane coupling agent는 브라켓의 접착력을 증가시킨다는 것을 알 수 있었다. 주요단어: 지르코니아, MDP, silica coating, 전단결합강도, ARI score