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dc.contributor.author진나영-
dc.creator진나영-
dc.date.accessioned2016-08-26T04:08:09Z-
dc.date.available2016-08-26T04:08:09Z-
dc.date.issued2007-
dc.identifier.otherOAK-000000020446-
dc.identifier.urihttps://dspace.ewha.ac.kr/handle/2015.oak/208247-
dc.identifier.urihttp://dcollection.ewha.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000020446-
dc.description.abstract이 연구는 접촉각 측정기구를 이용하여 시간의 경과에 따라 공기 중에서와 물속에 저장할 때 의치 이장재들의 젖음성을 비교하고 평가한 것이다. 두 개의 열중합 아크릴 의치이장재 Vertex RS(Vertex), Lang(Lang), 한 개의 경질 의치이장재 Rebase II(Tokuyama), 여섯 개의 실리콘 의치이장재 Mucopren soft(Kettenbach), Mucosoft(Parkell), Mollosil&#9415;plus(Detax), Sofreliner touch(Tokuyama), GC reline™ ultrasoft(GC), Silagum automix comfort(DMG)를 이 실험에 이용했다. 아홉 개의 재료로부터 아홉 개의 시편(80×10×15mm)을 만들었다. 실험은 각 시편당 여덟 번의 접촉각을 측정하였다. 접촉각은 경화 후 공기 중, 37±2℃ 물속에 1시간 저장, 37±2℃물속에 24시간 저장하는 3가지 조건 하에서 고해상도 Drop Shape System (DSA 10-MK2, KRUESS, Germany)을 이용하여 측정하였다. 또한 재료의 조성에 따라 그룹 1:PMMA, 그룹 2:PEMA, 그룹 3:Silicone으로 나누어 분석하였다. 통계 분석은 Independent samples t-test 와 one-way ANOVA, Scheffe test를 이용하였고, 유의수준은 0.01 미만으로 하였다. 실험결과는 다음과 같다. 경화 후 공기 중에서 측정했을 때, 접촉각은 Vertex RS가 72.55° 로 가장 작았고, GC reline™ ultrasoft가 114.95° 로 가장 컸다. 그룹 1의 평균은 75.34&#8728;, 그룹 2의 평균은 85.63° , 그룹 3의 평균은 111.99° 로 가장 컸다(P<0.01). 37±2℃ 물속에 1시간 저장한 후 측정했을 때, 접촉각은 Vertex RS가 73.53° 으로 가장 작았고, GC reline™ ultrasoft가 115.31° 로 가장 컸다. 그룹 1의 평균은 74.12° , 그룹 2의 평균은 89.33° , 그룹 3의 평균은 111.99° 로 가장 컸다(P<0.01). 37±2℃ 물속에 24시간 저장한 후 측정했을 때, 접촉각은 Lang이 69.73° 으로 가장 작았고, Mucopren soft가 111.93° 으로 가장 컸다. 그룹 1의 평균은 70.73&#8728;, 그룹 2의 평균은 88.69° , 그룹 3의 평균은 107.88° 로 가장 컸다(P<0.01). 이 연구에서는 다음과 같은 결론을 내릴 수 있었다. 1. 공기 중에서와 물속에서 모두 접촉각은 그룹 1, 그룹 2, 그룹 3의 순으로 컸다. 2. 열중합 아크릴 의치 이장재가 실리콘보다 더 젖음성이 우수했다. 3. Rebase II와 Mollosil plus를 제외한 대부분의 의치 이장재가 37±2℃ 물속에 24시간 저장한 후, 젖음성이 더 향상되었다.;Purpose. Purpose of this study was to compare and evaluate wettability of nine denture relining materials using contact angle measurements under air and water storage over time. Materials and Methods. Nine denture relining materials were investigated in this study. Two acrylic denture base materials: Vertex RS(Vertex), Lang(Lang), one hard chairside reline resin: Rebase II(Tokuyama), six silicone relining materials: Mucopren soft(Kettenbach), Mucosoft(Parkell), Mollosil&#9415;plus(Detax), Sofreliner touch(Tokuyama), GC reline™ ultrasoft(GC), Silagum automix comfort(DMG) were used in this experiment. Nine specimens (80×10×15mm) were prepared from nine materials. Each experiment was performed eight times per specimen. Contact angles were measured using high-resolution drop shape analysis system(DSA 10-MK2, KRUESS, Germany) under three conditions(in air after setting, 1 hour water storage at 37±2°C and 24 hours water storage at 37±2°C). Nine materials were distributed to three groups according to material composition. (Group 1:PMMA, Group 2:PEMA, Group 3:Silicone) Mean values of contact angles were compared using independent samples t-test and one-way ANOVA, followed by a post hoc Scheffe test(α=0.01). Results. In air after setting, Vertex RS(72.55°) had the smallest contact angle and GC reline™ ultrasoft(114.95°) had the largest contact angle. Between two materials, contact angles had a significantly difference(p<0.01). Mean values of contact angles were Group 1(75.36°), Group 2(85.63°), Group 3(111.99°). Among three groups, contact angles had a significantly difference(p<0.01). In 1 hour water storage at 37±2°C, Vertex RS(73.53°) had the smallest contact angle and GC reline™ ultrasoft(115.31°) had the largest contact angle. Between two materials, contact angles had a significantly difference(p<0.01). Mean values of contact angles were Group 1(74.12°), Group 2(89.33°), Group 3(111.99°). Among three groups, contact angles had a significantly difference(p<0.01). At 24 hours water storage at 37±2°C, Lang(69.73°) had the smallest contact angle and Mucopren soft(111.93°) had the largest contact angle. Between two materials, contact angles had a significantly difference(p<0.01). Mean values of contact angles were Group 1(70.73°), Group 2(88.69°), Group 3(107.88°). Among three groups, contact angles had a significantly difference(p<0.01). Conclusions. Within the limitations of this in vitro study, the following conclusions were drawn: 1. Contact angles of materials tested both air and water storage were increased in the following order : Group 1(PMMA), Group 2(PEMA), Group 3 (Silicone). 2. Heat-cured acrylic denture base resins were more wettable than silicone relining materials. Lang of them had the highest wettability after 24 hours water storage at 37±2℃. 3. Silicone relining materials had lower wettability among the materials tested. Mucopren soft of them had the lowest wettability after 24 hours water storage at 37±2℃. 4. Wettability of denture relining materials except Rebase II and Mollosil plus were increased after 24 hours water storage at 37±2℃.-
dc.description.tableofcontentsABSTRACT iii I. INTRODUCTION 1 II. MATERIALS AND METHODS 3 A. Materials 3 B. Methods 5 1. Specimen fabrication 5 2. Drop shape analysis 5 C. Statistical analysis 8 III. RESULTS 9 IV. DISCUSSION 15 V. CONCLUSIONS 19 REFERENCES 20 APPENDIX 24 국문초록 28-
dc.formatapplication/pdf-
dc.format.extent473915 bytes-
dc.languageeng-
dc.publisher이화여자대학교 임상치의학대학원-
dc.titleWettability of denture relining materials under water storage over time-
dc.typeMaster's Thesis-
dc.title.translated시간의 경과에 따른 의치 이장재의 젖음성에 대한 연구-
dc.format.pageiv, 29 p.-
dc.identifier.thesisdegreeMaster-
dc.identifier.major임상치의학대학원 임상치의학과보철수복치의학전공-
dc.date.awarded2007. 2-
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