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学科主题: 口腔医学
题名:
Effectiveness of Photoactivated Disinfection (PAD) to Kill Enterococcus faecalis in Planktonic Solution and in an Infected Tooth Model
作者: Yao, Na2; Zhang, Chengfei1; Chu, Chunhung1
刊名: PHOTOMEDICINE AND LASER SURGERY
发表日期: 2012-12-01
DOI: 10.1089/pho.2011.3216
卷: 30, 期:12, 页:699-704
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Surgery
研究领域[WOS]: Surgery
关键词[WOS]: PHOTO-ACTIVATED DISINFECTION ; ROOT CANALS ; IN-VITRO ; LETHAL PHOTOSENSITIZATION ; ENDODONTIC DISINFECTION ; STREPTOCOCCUS-MUTANS ; PHOTODYNAMIC THERAPY ; IRRIGATION ; EFFICACY ; TEETH
英文摘要:

Objective: The aim of this study was to investigate the effectiveness of photoactivated disinfection (PAD) in killing Enterococcus faecalis (EF) in planktonic solution and in an infected tooth model. Methods: One hundred and thirty-two glass tubes of EF samples with concentration of 10(14) colony forming units (CFU)/mL and photosensitizer were prepared. Sixteen groups were set up and subjected to diode laser, and then received a radiation energy dose ranging from 0.5 to 5.5 J. The bactericidal effect was measured by the mean CFU of viable EF after irradiation. Sixty single-rooted teeth were selected and contaminated with EF, and then given PAD therapy; 5.25% NaOCl irrigation and saline solution were used to disinfect the root canals. Microbial samples were taken before and after disinfection, and after 72 h recovery, and then the CFU were counted. Results: The bactericidal effect increased linearly with the irradiation energy dose in planktonic solution. For the same irradiation energy dose, the bactericidal effect was greater in group receiving 100mW than in that receiving 50mW and exposed to doubled irradiation time (p < 0.05). No bacterium was detected after irrigation in the NaOCl group in the root canal model, but the recovery of bacteria after 72 h was detected in 11 samples. Bacteria were detected in all the other groups, and PAD was significantly more effective than saline solution in reducing the number of bacterial cells within the root canals (p < 0.05). Conclusions: PAD was shown to have bactericidal effect on EF, and the bactericidal effect increased linearly with the irradiation energy dose and was superior using higher output power. PAD could decrease EF in root canals effectively, but was no more effective than 5.25% NaOCl, and PAD is more effective in planktonic solution than in root canals.

语种: 英语
WOS记录号: WOS:000311829800005
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/51910
Appears in Collections:北京大学口腔医学院_第二门诊部_期刊论文

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作者单位: 1.Univ Hong Kong, Dept Endodont, Fac Dent, Hong Kong, Hong Kong, Peoples R China
2.Peking Univ, Dent Ctr 2, Sch & Hosp Stomatol, Beijing 100871, Peoples R China

Recommended Citation:
Yao, Na,Zhang, Chengfei,Chu, Chunhung. Effectiveness of Photoactivated Disinfection (PAD) to Kill Enterococcus faecalis in Planktonic Solution and in an Infected Tooth Model[J]. PHOTOMEDICINE AND LASER SURGERY,2012,30(12):699-704.
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