Publication year
2007Source
Caries Research, 41, 2, (2007), pp. 102-107ISSN
Publication type
Article / Letter to editor

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Organization
Preventative Restorative Dentistry
Oral Function and Prosthetic Dentistry
IQ Healthcare
Dentistry
Former Organization
Centre for Quality of Care Research
Journal title
Caries Research
Volume
vol. 41
Issue
iss. 2
Page start
p. 102
Page end
p. 107
Subject
EBP 3: Effective Primary Care and Public Health; EBP 4: Quality of Care; NCEBP 7: Effective primary care and public health; UMCN 4.3: Tissue engineering and reconstructive surgeryAbstract
This in vivo pilot study was carried out to test the antibacterial effect of glass ionomer containing chlorhexidine (test group) in comparison to conventional glass ionomer (control group). Fifty 6- to 11-year-old children with one occlusal lesion in a molar were randomly allocated to test and control groups in a parallel-group design. The cavity walls and one half of the floor were cleaned and restored with one of the materials without dentine conditioning. The restorations were removed after 7 days. Dentine samples were taken from the cleaned (affected dentine) and noncleaned area (infected dentine) at baseline and at day 7. Samples were anaerobically and aerobically cultivated for mutans streptococci, lactobacilli and total viable bacterial count (TVC) following common laboratory procedures. ANCOVA was used to test for treatment effects. Seven days after treatment, a significant decrease in anaerobic and aerobic bacterial counts (p = 0.0001) was shown. Lower numbers of anaerobic lactobacilli (p = 0.02), TVC (p = 0.008) and aerobic lactobacilli and TVC (p = 0.03), but not of mutans streptococci, were indicated in the test group compared to the control group. A significant reduction in aerobic lactobacilli from infected dentine treated with the glass ionomer containing chlorhexidine (p = 0.05) was observed whereas in affected dentine, anaerobic mutans streptococci, lactobacilli and TVC and aerobic TVC and mutans streptococci were significantly lower in the test group 7 days after treatment (p = 0.01). We conclude that the present pilot study revealed lower microorganism counts in chlorhexidine-containing glass ionomers than in conventional glass ionomers for both affected and infected dentine over a 7-day period.
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