摘要
目的评价活动义齿不同清洁方式对于钴铬合金义齿铸造支架表面形貌的影响。方法离心铸造35个钴铬合金金属试样(15 mm×10 mm×1 mm)并镜面抛光,将试样按随机数字表法分为5组:A组为对照组,在蒸馏水中浸泡;B、C、D、E组为实验组,B组牙刷+蒸馏水刷洗2 min,C组牙刷+牙膏刷洗2 min,D组Polident清洁片浸泡5 min,E组假牙清洁片浸泡5 min+牙刷刷洗2 min,重复该处理过程180个循环。使用粗糙度测试仪测试处理前后试样表面粗糙度值(Ra),扫描电子显微镜(SEM)观察处理前后试样表面形貌的变化。结果1不同方式处理前后A组和D组Ra分别为:(0.003 8±0.002 0/0.004 2±0.001 3)(0.005 1±0.001 7/0.005 0±0.001 4),差异均无统计学意义(P>0.05);B组、C组和E组处理前后表面Ra均增加,分别为(0.003 7±0.001 0/0.037 6±0.003 3)、(0.004 3±0.000 8/0.185 2±0.053 6)(0.005 5±0.001 4/0.014 5±0.001 2),差异均有统计学意义(均P<0.05)。2不同方式处理前后各组间Ra比较:处理前各组间Ra差异无统计学意义(P>0.05);不同方式处理后,与A组比较,D组Ra虽稍增加,差异无统计学意义(均P>0.05),B组、C组、E组较A组Ra明显增加,且差异均有统计学意义(均P<0.01);B组、C组、E组两两之间比较,差异均有统计学意义(均P<0.01)。3不同清洁方式处理后,SEM观察A、B、D、E组试样表面无明显划痕,C组试样表面较处理前可见明显划痕。结论牙刷+牙膏清洁方式可明显增加钴铬合金义齿支架表面粗糙度且产生明显划痕,清洁片清洁方式不能引起表面粗糙度增加且不会产生划痕,牙刷+蒸馏水清洁方式、清洁片+牙刷清洁方式可稍增加表面粗糙度但不会产生划痕。
Objective To evaluate different cleaning methods on the surface of cobalt-chromium（Co-Cr） alloy framework of removable denture. Methods Thirty-five Co-Cr alloy samples（15 mm×10 mm×1 mm） were established by centrifugal casting and mirror polishing. All samples were randomly divided into 5 groups： group A was included as the control group, which was immersed in distilled water; groups B, C, D and E were included as the study group.Group B was brushed with toothbrush＋distilled water for 2 min. Group C was brushed with toothbrush＋ toothpaste for2 min. Group D was immersed in Polident solution for 5 min. Group E was immersed in Polident solution for 5 min and brushed for 2 min. All the process was repeated 180 cycles. A roughness analyzer was used to measure the sur-face roughness（Ra） of the samples before and after the treatment. The surface changes of the samples were deter-mined by scanning electron microscope（SEM） before and after the treatment. Results 1 The Ra in groups A and D before and after the treatment were（0.003 8 ± 0.002 0/0.004 2±0.001 3） and（0.005 1 ± 0.001 7/0.005 0 ± 0.001 4）,respectively, and the difference was not statistically significant（P〉0.05）. The Ra in groups B, C and E before and after the treatment were all increased, which were（0.003 7 ±0.001 0/0.037 6±0.003 3）,（0.004 3±0.000 8/0.185 2±0.053 6）and（0.005 5 ±0.001 4/0.014 5 ±0.001 2）, respectively, and the differences were statistically significant（ P 0.05）. 2Comparison in Ra before and after different treatment among the groups： before the treatment, there was no statistical significance in Ra among the groups（P〉0.05）. After different treatments, the Ra of the samples was not all the same.The Ra in group D was slightly increased than that in group A（control group）, and the difference was not statistically significant（all P〉0.05）. The Ra in groups B, C and E were significantly increased than that in group A, and the dif-ferences were statistically significant�
出处
《中国药物与临床》
CAS
2016年第3期329-332,共4页
Chinese Remedies & Clinics
关键词
义齿
铬合金
义齿清洁
粗糙度
显微镜检查
电子
扫描
Dentures
Chromium alloys
Denture cleaning
Roughness
Microscopy
electron
scanning
