Bacteriology of deep carious lesions underneath amalgam restorations with different pulp-capping materials--an in vivo analysis |
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Authors: | Neelakantan Prasanna Rao Chandragiri Venkata Subba Indramohan Jamuna |
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Affiliation: | Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha University, Chennai, India. prasu_endo@yahoo.com |
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Abstract: | Microorganisms remaining in dentin following cavity preparation may induce pulp
damage, requiring the use of pulp-capping agents with antimicrobial activity
underneath permanent restorations.Objective The aims of this study were to analyze the bacteriological status of carious
dentin and to assess the efficacy of different base underneath silver amalgam
restorations. Material and Methods This study was conducted on 50 patients aged 13 to 30 years. Sterile swabs were
used to take samples after cavity preparation, which was assessed by
microbiological culture to identify the microorganisms present. Following this,
cavities were restored with silver amalgam, using one of the materials being
investigated, as the base: calcium hydroxide (Group II), polyantibiotic paste
(Group III), a novel light-cured fluoride-releasing hydroxyapatite-based liner
(Group IV) and mineral trioxide aggregate - MTA (Group V). In Group I, the
cavities were restored with silver amalgam, without any base. After 3 months, the
amalgam was removed and samples taken again and analyzed for the microbial flora.
Results Lactobacilli were the most commonly isolated microorganisms in the samples of
carious dentin. Groups IV and V showed negative culture in the 3-month samples.
There was no statistically significant difference between Groups I, II and III.
There was no significant difference between Groups IV and V (p>0.05). Both
Groups IV and V showed significantly better results when compared to Groups I, II
and III (p<0.05). Conclusions The hydroxyapatite-based liner and MTA performed significantly better in terms of
antibacterial activity than the other materials. |
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Keywords: | Dental caries Microbiology Calcium hydroxide Hydroxyapatite Mineral Trioxide Aggregate Amalgam |
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