Alaa I Abdelhamid.
Scanning Electron Microscope Evaluation of the Effect of Systemic Administration of Aspirin on the Osseointegration of Dental Implants (Experimental Study).
J Pak Dent Assoc Jan ;20(4):260-5.

OBJECTIVES The objectives of this study were to evaluate the antibacterial effects of Calcium hydroxide and Chlorhexidene as intra canalmedicaments in a sample of Pakistani population. METHODOLOGY Eighty, single rooted teeth of patients with necrotic pulps and periradicular lesion who presented atDepartmentOfOperativeDentistry, Fatima Jinnah Dental College Hospital, AzamBastiwere recruited in the study.At first appointment the root canals were cleaned, shaped and dried. Initial samples for bacteriological examination were taken. Medicaments to be tested were placed in the root canals and access cavities were sealed with temporary filling material. After seven days, samples were taken again from the root canal and inspected for growth of microorganism to determine the efficacy of the medicament used. Data was compared using ‘Pearson’s Chi-square test’ on S.PS.S version 10 for windows. RESULTS Twenty three (57.5%) out of 40 case swith Chlorhexidene dressing yielded negative cultures.Whereas Calcium Hydroxide group showed negative cultures in 18 (45%) out of 40. There were no statistically significant differences between the two medicament groups. (p-value is 0.263). Conclusions: Chlorhexidene has better antibacterial effects than calcium hydroxide clinically.However, there were no statistically significant differences among the medicaments tested.

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