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題 名 | 義齒樹脂表面粗糙度對白色念珠菌黏附的影響=The Influence of Denture Surface Roughness on the Adhesion of Candida Albicans |
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作 者 | 林佶弘; 陳宜君; 林立德; 王東美; 王若松; | 書刊名 | 臺灣醫學 |
卷 期 | 9:3 2005.05[民94.05] |
頁 次 | 頁332-338 |
分類號 | 416.96 |
關鍵詞 | 義齒表面粗糙度; 白色念珠菌黏附; Denture surface roughness; Adhesion of candida albicans; |
語 文 | 中文(Chinese) |
中文摘要 | 對於白色念珠菌在活動義齒上之黏附實驗結果,其定量的方法絕大多數都是利用顯微鏡觀察,然而這種普遍使用的方法,卻存在著許多變數令實驗結果不易控制和定量。故本實驗欲利用壓印轉殖的技術(imprint culture)來衡量樹脂表面粗糙度對念珠菌黏附的影響。我們以傳統製作義齒的方式製備了40片的樹脂試片,以隨機選取的方式,各選取10片分別以碳鋼磨針(carbide bur),緣磨石磨針(green stone),和矽膠牙床磨光針(big silicone points)做表面處理,其餘10片為控制組。在黏附實驗前,所有試片皆以表面粗度測定器量得其表面粗糙度參數Ra(平均粗糙度),Rz(平均波峰-波谷差),隨後將所有試片浸泡於濃度約為10^4 yeasts/ml的白色念珠菌(SC5314)培養液中。浸泡1小時後,將試片陰乾,並以固定的力量壓印於培養基上,培養24小時,然後計算其生長菌落數。分析結果發現表面粗糙度是有差異的(P<0.001)。未經表面處理之樹脂試片(控制組)雖不是最粗糙的(Ra=1.06±0.22µm,Rz=8.13±1.58µm),然其上生長的菌落數(222±139 CFU/(平方公分))以one-way ANOVA分析,明顯比經表面處理過的試片來的多(P<0.001)。就實驗組內相互比較,經綠磨石磨針處理過的樹脂,其表面最粗糙(Ra=2.34±0.45µm,Rz=13.54±1.97µm),也有較多的白色念珠菌黏附(76±43 CFU/(平方公分)),在統計上是有明顯差異存在的(P<0.05)。而用碳鋼磨針(Ra=l.46±0.15µm,Rz=6.80±0.73µm)和矽膠牙床磨光針(Ra=0.70±0.09µm,Rz=3.6±0.67µm)處理過的樹脂,其表面粗糙度雖然是有差異的(P<0.001),但對於白色念珠菌的黏附(碳鋼磨針=30±21 CFU/(平方公分)矽膠牙床磨光針=32±12 CFU/(平方公分)多寡並無統計上的意義(P=0.99)。由實驗結果得知,除了義齒樹脂的表面粗糙度外,似乎仍有其他念珠菌與材料本身相關的因素在影響白色念珠菌的黏附能力。 |
英文摘要 | The adhesion assays between Candida and denture acrylic in vitro ere commonly evaluated by microscopic examination, but the results could not be quantified easily. The purposes of our study were to evaluate the influences of surface roughness of denture acrylic on the adhesion of C.albicans by imprint culture technique. Forty pieces of heat-cured acrylic resin, 2x5x0.1 cm in size, were fabricated according to manufacturer's instruction. Ten pieces as a group, acrylic surfaces were polished by carbide, green stone, and big silicone burs respectively, and 10 pieces were done nothing as control. Before adhesion assay, surface roughness (Ra, Rz) on each resin plates were measured by Surftest 4. Then the resin plate vas immersed in a culture media which contain SC5314 (about 10^4 yeasts/ml). One hour later, the sample vas air dried and imprinted on Sabourand dextrose agar with constant loads, after 24 hours the forming colonies on the agar ere counted. The results showed that surface roughness was significantly different among groups (p<0.00l). Although surface of control group vas not the roughest (Ra=1.06±0.22, Rz8.13±1.58), Candida adhesion (222±139 CFU/cm^2) vas significantly more than those of the experimental groups (p<0.00l). In the experimental groups, green stone group showed the roughest surface (Ra=2.34±0.45. Rz=13.54±1.97), which also adhered significantly more Candida (76±43 CFU/cm^2) (p<0.05). Although surface roughness beteen carbide (Ra=1.46±0.15, Rz=6.80±0.73) and big silicone groups (Ra=0.70±0.09, Rz=3.67±0.67) as significantly different (p<0.001), there is no difference in Candida adhesion (carbite group=30±21 CFU/cm^2, big silicone group=32±I2CFU/cm^2)(p=0.99). Our results suggest that there may be factors other than surface roughness, which may also affect the adhesion of Candida to the denture surface. |
本系統中英文摘要資訊取自各篇刊載內容。