• 대한치과보철학회지
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• 제41권4호
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• pp.493-502
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• 2003

Statement of problem : Removable partial denture and complete denture often require denture base relines to improve the fittness against tissue-bearing mucosa because of the gradual change in edentulous ridge contour and resorption of underlyng bony structure. Self-curing hard reline resins offers the immediate and relatively inexpensive means to be recondition the surface of denture base directly However weak bond between denture base resin and reline material can harbor bacteria, promote staining, or result in complete separation of the two materials. Purpose : The purpose of this study was to evaluate the effect of denture cleansers on bond strength and surface hardness of reline resin to denture base resin Denture base resin beams($60.0{\times}15.0{\times}3.0mm$) were made with Lucitone 199. Material and methods : 10mm section was removed from the center of each specimen. The samples were replaced in the molds and the space of l0mm sections were packed with Tokuso Rebase reline material. The specimens were immersed in denture cleansers (Polident, Cleadent) and were evaluated after 1 week, 2 weeks, and 4 weeks. The bond strength and surface hardness of self-curing hard reline materials to heat-curing denture base resin were measured using an UTM (universal testing machine). Results and conclusion : 1) There was no significant difference of usage, kind, and denture cleaner by application time on the bonding strength of self-curing hard reline resin to denture base resin. 2) There was no significant difference of usage, kind, and denture cleaner by application time on the surface hardness, but the surface hardness showed decreasing tendency, as the time of immersion was extended. 3) The failure modes of the specimens was initially adhesive failure and finally cohesive failure of self-curing hard reline resin.

• 대한치과보철학회지
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• 제31권1호
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• pp.28-38
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• 1993

For the purpose of evaluating the cleansing efficiency against Candida albicans detected frequently in patients with denture stomatitis, two denture cleansers with or without enzymes were studied under the same conditions. The results were as fellows: 1. Enzyme-contain denture cleanser was showed more Candida albicans lytic ability than non-enzyme-contained denture cleanser. 2. It was observed that Candida albicans lytic activity in further diluted manufacturerers' recommended concentration was decreased. 3. In fungicidal test, the enzyme-contained denture cleanser sterilized Candida albicans, and the non-enzyme-contained denture cleanser did not sterilize Candida albicans. 4. Sterilizing time of Candid albicans was needed for at least 60 minutes in enzyme-contained denture cleanser solution which was diluted with manufacturerers' recommended concentrations., and was needed for more times with further diluted manufacturerers' recommended concentrations. 5. In vitro growth test of Candida albicans on acrylic resin surface, the only enzyme-contained denture cleanser inhibited growth of Candida albicans, and it was observed that inhibiton ability of growth of Candida albicans on arrylic resin surface was decreased in further diluted manufacturerers' recommended concentrations.

• 대한치과보철학회지
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• 제39권1호
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• pp.105-113
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• 2001

The purpose of this study is to compare effects of denture cleansers and disinfectants on the color. surface hardness, and surface roughness of reinforced acrylic resin using polyhedral oligosilsesquioxane molecules(POSS resin) to those of common resins. According to manufacturer's instructions, 45 specimens were made from three denture resins(Luciton 199, Paladent 20, POSS resin), and polished. Five denture cleansers(distilled water, glutaraldehyde, alkaline hypochlorites, chlorhexidine, alkaline peroxides) in combination with three denture resins were evaluated before and after immersion for 7 days. Color data in $L^*a^*b^*$ system were measured with a colorimeter. Surface hardness data were measured with a microhardness tester. Surface roughness data were measured with a 3-dimensional surface analyzer. Data were analyzed with two-way ANOVA, one-way ANOVA, and t-test. The results were as follows : 1. All resins(Luciton 199, Paladent 20, POSS resin) showed significant differences in color after immersion in hypochlorites(p<0.05). 2. POSS resin showed significant differences in color compared with Paladent 20 in all denture cleansers, but no statistically significant differences with Luciton 199(p<0.05). 3. Luciton 199 showed significant differences of surface hardness in chlorhexidine, Paladent 20 showed significant differences in glutaraldehyde and chlorhexidine. POSS resin showed a little change of surface in all denture cleanser, but no statistically significant differences(p<0.05). 4. Luciton 199 and Paladent 20 showed significant differences of surface roughness in hypochlorites and glutaraldehyde, and POSS resin showed no statistically significant differences in all denture cleansers(p<0.05).

• 대한치과보철학회지
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• 제31권2호
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• pp.219-235
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• 1993

To determine the compatibilities of soft liming materials with denture cleansers by measuring the flexibility and elasticity and investigating the surface changes, 4 self-curing acrylic resin soft lining materials and 1 heat-curing silicone soft lining material were evaluated. 3mm thick x 20mm diameter discs of soft lining materials were individually bonded to a hard acrylic resin base as per manufacturers’instructions. Using an Instron universal testing machine, a static stress of $2kg/cm^2$ was applied for 30secs., the strain in compression was measured, giving an indication of the material’s flexibility. Elastic recovery was measured at 10secs. After removal of stress. Surface changes were investigated with Stereomicroscope. Then the specimens were immersed in 4alkaline peroxide denture cleansers and water as control group, tests were carried out at 1 day, 2 days, 7 days, 14 days and 30 days. The results were as follows : 1. Alkaline peroxide denture cleansers caused considerable porosity on the surface of selfcuring acrylic resin soft lining materials, and the most affected by the cleansers were Viscogel, Coe-Soft, Coe-Comfort, Lynal, in that order. 2. There was significant difference in flexibility between each soft lining material except for Coe-Comfort and Visco-gel, and every soft lining material was significant difference in elasticity. Especially Molloplast-B and Lynal were less flexible and more elastic than other soft lining materials(p<0.05). 3. The denture cleansers increased the flexibility and elasticity of the soft lining materials compared with control group(p<0.05), and Denalan, Polident, Kleenite, Efferdent affected the soft lining materials in that order. 4. There was significant difference in flexibility between each denture cleanser except for Denalan and Polident(p<0.05). Though Denalan and Polident, Denalan and Kleenite did not show significant difference in elasticity, other denture cleansers showed significant difference among each other(p<0.05). 5. Clinically Coe-Comfort, Coe-Soft and Visco-gel were incompatible with alkaline peroxide denture cleansers, and Lynal would be used within only 2 weeks. But Molloplast-B was compatible with alkaline peroxide denture cleansers.

• 치위생과학회지
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• 제10권4호
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• pp.241-250
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• 2010

부산, 경남 지역 성인의 구강위생용품의 인지도, 사용법 숙지, 현재 사용실태를 파악하고 구강위생용품을 권장하고 보급하는 방안을 제시함으로써 가정에서의 구강건강관리에 도움을 주고자 할 목적으로 조사되었다. 이에 임의로 선정한 부산, 경남 지역의 성인 350명을 대상으로 자기기입식 설문조사를 실시하였으며, 구강건강 상태별로 구분하여 구강위생용품의 인지도, 사용법 숙지, 현재 사용실태를 조사 분석하여 다음과 같은 결과를 얻었다. 1. 연구대상자들의 구강위생용품에 대한 인지도는 사용법 숙지와 현재 사용률 보다 높았으며, 사용법 숙지는 현재 사용률 보다 높았다. 특히, 이쑤시개 사용자율이 다른 구강위생용품의 인지도, 사용법 숙지, 현재 사용자율 보다 높았다. 2. 관심 관리 구강병인 치아우식증과 구강암은 치간칫솔을 가장 많이 인지하고 사용법을 숙지하고 현재 사용하고 있었고, 치주병은 치주환자용 칫솔을 가장 많이 인지하고 사용법을 숙지하고 치간칫솔을 현재 가장 많이 사용하는 것으로 나타났다. 부정교합은 교정용 칫솔을 가장 많이 인지하고 치간칫솔을 가장 많이 사용법을 숙지하고 현재 사용하는 것으로 나타났다. 3. 구강건강 중요도가 '중요하다'고 생각하는 연구대상자의 46.9%가 의치세정제의 사용법을 가장 많이 숙지하고 있었고, 45.8%가 혀클리너를 현재 가장 많이 사용하고 있었다. 그리고 구강건강 중요도가 '보통이다'고 생각하는 연구대상자의 48.4%가 의치용 칫솔의 사용법을 가장 많이 숙지하고 있었고, 50.0%가 첨단칫솔을 현재 가장 많이 사용하는 것으로 나타났다. 4. 구강건강 상태가 '보통이다'라고 생각하는 연구대상자의 47.7%가 혀클리너의 사용법을 가장 많이 숙지하고 있었고, 42.9%가 워터픽을 현재 가장 많이 사용하는 것으로 나타났다. 5. 구강건강 문제가 충치인 연구대상자의 33.3.%가 의치세정제를 가장 많이 인지하고 있었고, 39.1%가 지각과민둔화세치제의 사용법을 숙지하고 있었고, 45.8%가 혀클리너를 현재 가장 많이 사용하고 있었다. 잇몸의 경우 96.0%가 고무치간자극기를 가장 많이 인지하고 있었고, 47.2%가 교정용 칫솔의 사용법을 가장 많이 숙지하고 있었으며, 50.0%가 고무치간자극기를 현재 가장 많이 사용하는 것으로 나타났다. 6. 연구대상자들의 최대 관심 관리 구강병으로 치아우식증이 50.7%, 치주병이 34.1%, 부정교합이 12.2%, 구강암이 3.0%순으로 조사되었다. 조사대상자 대부분이 최대 관심을 갖고 관리하고 있으며, 자신의 구강상태의 문제점을 인지하고 반영한 것으로 사료된다. 7. 구강위생용품을 사용하게 된 동기를 조사한 결과, '독자적인 판단으로 좋을 것 같아서'가 45.9%로 가장 많았으며, 구강위생용품을 사용하지 않는 이유는 '적절한 구강위생용품을 몰라서'가 26.0%로 가장 높았다. 본 연구의 결과, 부산 경남 지역 성인의 구강위생용품에 대한 인지도는 높았으나 사용법 숙지 및 현재 사용률이 매우 낮았다. 따라서 전 국민을 대상으로 구강위생용품의 효과 및 필요성 등에 대한 홍보가 이루어지고, 치과의료기관에서 구강보건인력들이 환자특성에 따른 적합한 구강위생용품의 선택과 사용방법에 대한 교육이 이루어져야 할 것으로 검토되었다.