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Helicobacter pylori is a microaerophilic, motile bacterium, especially adapted to life in the human stomach. The presence of H. pylori in the stomach is strongly associated with chronic gastritis and ulcer disease and is a risk factor for gastric cancers. The microorganism may be transmitted orally and has been detected in dental plaque, saliva, and feces, but the hypothesis that oral microflora may be a permanent reservoir of H. pylori is still controversial. A review of the literature suggests that the recovery of H. pylori in the mouth is probably intermittent, associated with gastroesophageal reflux but not with specific oral disease. Nonetheless, the PCR identification of oral H. pylori may become helpful, particularly in cases of gastritis or ulcer relapse after antimicrobial therapy. Eradication of oral H. pylori by local medication or periodontal procedures would rely on the precise identification of its ecological niche. Within family groups, prophylactic methods should be practiced to avoid oral carriage of H. pylori. The risk of iatrogenic transmission during dental care, however, is already circumscribed by standard professional hygiene procedures. J Periodontol 1997;68:2–6.
Helicobacter pylori is a microaerophilic, motile bacterium, especially adapted to life in the human stomach. The presence of H. pylori in the stomach is strongly associated with chronic gastritis and ulcer disease and is a risk factor for gastric cancers. The microorganism may be transmitted orally and has been detected in dental plaque, saliva, and feces, but the hypothesis that oral microflora may be a permanent reservoir of H. pylori is still controversial. A review of the literature suggests that the recovery of H. pylori in the mouth is probably intermittent, associated with gastroesophageal reflux but not with specific oral disease. Nonetheless, the PCR identification of oral H. pylori may become helpful, particularly in cases of gastritis or ulcer relapse after antimicrobial therapy. Eradication of oral H. pylori by local medication or periodontal procedures would rely on the precise identification of its ecological niche. Within family groups, prophylactic methods should be practiced to avoid oral carriage of H. pylori. The risk of iatrogenic transmission during dental care, however, is already circumscribed by standard professional hygiene procedures. J Periodontol 1997;68:2–6.
Unge P, Berstad A. Pooled analysis of anti-Helicobacter pylori treatment regimens. Scand J Gastroenterol 1996;31 Suppl 220:2740.Background: The human pathogen Helicobacter pylori and its association with peptic ulcer has dramatically changed the therapeutic approach to patients with this disease. Successful treatment of the infection has consistently been shown to prevent ulcer recurrence. Published data on therapeutic options are sometimes confusing since only few studies have similar design, drug combinations, dosage, dosing, formulation, patient material, and size. A formal meta-analysis is therefore of limited value. Method: Data on anti-H. pylori therapies from a large number of publications are pooled into a few groups based on the combination of drugs, regardless of dosage, duration, etc., of the therapy. A mean success rate is calculated for all studies with subanalysis with regard to study design, size, doses and duration. Results: Triple combinations are needed to achieve a success rate of more than 80%. Bismuth/tetracycline based triple therapy gives 82% success rate (range 43-100%) compared to 85% and 87% success rate (range 72-100% and 43-100%) achieved with omeprazole/clarithromycin based triples respectively. Conclusion: Omeprazole/clarithromycin based triple regimens are the most effective anti-H. pylori therapeutic strategies, slightly superior to bismuth triple regimens.
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