PDF(Pubmed)
Abstract：
UNASSIGNED: The aim of this study was to evaluate the hydrogen peroxide and cetylpyridinium chloride as bacterial decontaminants of dental unit water lines at a private Peruvian dental school.
UNASSIGNED: Water samples were obtained from 66 dental units of a University Dental Clinic before decontamination treatment and at days 3 and 7 thereafter. The biofilm treatments were applied equitably among the two treatment groups (n = 22) and one negative control (distilled water). The samples obtained on each collection day were taken to the biochemical laboratory in thermal boxes and then diluted, seeded, and incubated at 37°C for 24h to count colony forming units per milliliter (CFU/mL).
UNASSIGNED: The samples to which hydrogen peroxide were applied had a mean of 1.53 × 105 CFU/mL before application, 0.04 × 105 CFU/mL at day 3, and 0.03 × 105 CFU/mL at day 7, whereas the samples undergoing cetylpyridinium chloride treatment had a mean of 1.74 × 105 CFU/mL before application, 615.38 CFU/mL on day 3, and 307.69 CFU/mL on day 7. Distilled water treatment showed a mean of 1.72 × 105 ± 0.39 × 105 CFU/mL at baseline, 1.51 × 105 ± 1.40 × 105 CFU/mL at day 3, and a mean of 1.74 × 105 ± 0.47 × 105 CFU/mL at day 7. Statistically significant differences were found among the three treatment groups at days 3 (P ≤ 0.001) and 7 (P ≤ 0.001) but not at baseline (P = 0.306).
UNASSIGNED: The antibacterial effect of cetylpyridinium chloride was significantly greater than that of hydrogen peroxide and distilled water, and can, therefore, be used for bacterial control in the water lines of dental units.
UNASSIGNED: Water samples were obtained from 66 dental units of a University Dental Clinic before decontamination treatment and at days 3 and 7 thereafter. The biofilm treatments were applied equitably among the two treatment groups (n = 22) and one negative control (distilled water). The samples obtained on each collection day were taken to the biochemical laboratory in thermal boxes and then diluted, seeded, and incubated at 37°C for 24h to count colony forming units per milliliter (CFU/mL).
UNASSIGNED: The samples to which hydrogen peroxide were applied had a mean of 1.53 × 105 CFU/mL before application, 0.04 × 105 CFU/mL at day 3, and 0.03 × 105 CFU/mL at day 7, whereas the samples undergoing cetylpyridinium chloride treatment had a mean of 1.74 × 105 CFU/mL before application, 615.38 CFU/mL on day 3, and 307.69 CFU/mL on day 7. Distilled water treatment showed a mean of 1.72 × 105 ± 0.39 × 105 CFU/mL at baseline, 1.51 × 105 ± 1.40 × 105 CFU/mL at day 3, and a mean of 1.74 × 105 ± 0.47 × 105 CFU/mL at day 7. Statistically significant differences were found among the three treatment groups at days 3 (P ≤ 0.001) and 7 (P ≤ 0.001) but not at baseline (P = 0.306).
UNASSIGNED: The antibacterial effect of cetylpyridinium chloride was significantly greater than that of hydrogen peroxide and distilled water, and can, therefore, be used for bacterial control in the water lines of dental units.
摘要：
■这项研究的目的是评估过氧化氢和氯化十六烷基吡啶作为私人秘鲁牙科学校的牙科单元水管的细菌去污剂。
■在去污处理之前和之后的第3天和第7天从大学牙科诊所的66个牙科单位获得水样。在两个处理组(n=22)和一个阴性对照(蒸馏水)之间公平地应用生物膜处理。将每个收集日获得的样品在热箱中带到生化实验室，然后稀释，播种,并在37°C下孵育24小时以计算每毫升菌落形成单位(CFU/mL)。
■应用过氧化氢的样品在应用前的平均值为1.53×105CFU/mL，第3天为0.04×105CFU/mL，第7天为0.03×105CFU/mL，而经过西吡氯铵处理的样品在施用前的平均值为1.74×105CFU/mL，第3天615.38CFU/mL,第7天307.69CFU/mL。蒸馏水处理显示基线时的平均值为1.72×105±0.39×105CFU/mL，第3天1.51×105±1.40×105CFU/mL,第7天平均值1.74×105±0.47×105CFU/mL。在第3天（P≤0.001）和第7天（P≤0.001），但在基线（P=0.306），三个治疗组之间存在统计学上的显着差异。
■氯化十六烷基吡啶的抗菌效果明显大于过氧化氢和蒸馏水，并且可以，因此,可用于牙科单位的水管中的细菌控制。
■在去污处理之前和之后的第3天和第7天从大学牙科诊所的66个牙科单位获得水样。在两个处理组(n=22)和一个阴性对照(蒸馏水)之间公平地应用生物膜处理。将每个收集日获得的样品在热箱中带到生化实验室，然后稀释，播种,并在37°C下孵育24小时以计算每毫升菌落形成单位(CFU/mL)。
■应用过氧化氢的样品在应用前的平均值为1.53×105CFU/mL，第3天为0.04×105CFU/mL，第7天为0.03×105CFU/mL，而经过西吡氯铵处理的样品在施用前的平均值为1.74×105CFU/mL，第3天615.38CFU/mL,第7天307.69CFU/mL。蒸馏水处理显示基线时的平均值为1.72×105±0.39×105CFU/mL，第3天1.51×105±1.40×105CFU/mL,第7天平均值1.74×105±0.47×105CFU/mL。在第3天（P≤0.001）和第7天（P≤0.001），但在基线（P=0.306），三个治疗组之间存在统计学上的显着差异。
■氯化十六烷基吡啶的抗菌效果明显大于过氧化氢和蒸馏水，并且可以，因此,可用于牙科单位的水管中的细菌控制。
