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Microbial changes after full-mouth tooth extraction followed by 2-stage implant placement.

Identifieur interne : 000012 ( Hal/Checkpoint ); précédent : 000011; suivant : 000013

Microbial changes after full-mouth tooth extraction followed by 2-stage implant placement.

Auteurs : Marc Quirynen [Belgique] ; Nele Van Assche [Belgique]

Source :

Journal of Clinical Periodontology [ 0303-6979 ] ; 2011-04-13.

RBID : Hal:hal-00631699

Abstract

Background: Recent studies showed that qPCR could detect bacteria related to periodontitis and peri-implantitis in a low concentration after full mouth tooth extraction. This study monitored the microbiota from tooth extraction, over 9 months of full edentulism, up to 1 year after abutment connection. Material and methods: Ten patients with severe periodontitis were recruited. Six months after tooth extraction implants were inserted. Three to 6 months later they were connected to abutments. Plaque samples were collected from the tongue dorsum, saliva and subgingival area (teeth/implants) before extraction up to one year after abutment connection, and analysed via culture, qPCR, and checkerboard technology. Results: A reduction in total amount of aerobic and anaerobic CFU/ml was observed. The concentration of Porphyromonas gingivalis and Tannerella forsythia (qPCR and checkerboard) in the saliva, and to a lower extend on the tongue dorsum reduced. For Prevotella intermedia changes were negligible and no changes could be detected for Aggregatibacter actinomycetemcomitans. The pristine subgingival niches were quickly colonized by key-pathogens. Their final concentration remained low, while detection frequencies remained very high over time. Conclusion: Complete edentulation results in a significant reduction of bacteria related to periodontitis and peri-implantitis with an exception of Aggregatibacter actinomycetemcomitans, which might indicate that key pathogens can survive without pockets.

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https://hal.archives-ouvertes.fr/hal-00631699

DOI: 10.1111/j.1600-051X.2011.01728.x

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Le document en format XML

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<front><div type="abstract" xml:lang="en">Background: Recent studies showed that qPCR could detect bacteria related to periodontitis and peri-implantitis in a low concentration after full mouth tooth extraction. This study monitored the microbiota from tooth extraction, over 9 months of full edentulism, up to 1 year after abutment connection. Material and methods: Ten patients with severe periodontitis were recruited. Six months after tooth extraction implants were inserted. Three to 6 months later they were connected to abutments. Plaque samples were collected from the tongue dorsum, saliva and subgingival area (teeth/implants) before extraction up to one year after abutment connection, and analysed via culture, qPCR, and checkerboard technology. Results: A reduction in total amount of aerobic and anaerobic CFU/ml was observed. The concentration of Porphyromonas gingivalis and Tannerella forsythia (qPCR and checkerboard) in the saliva, and to a lower extend on the tongue dorsum reduced. For Prevotella intermedia changes were negligible and no changes could be detected for Aggregatibacter actinomycetemcomitans. The pristine subgingival niches were quickly colonized by key-pathogens. Their final concentration remained low, while detection frequencies remained very high over time. Conclusion: Complete edentulation results in a significant reduction of bacteria related to periodontitis and peri-implantitis with an exception of Aggregatibacter actinomycetemcomitans, which might indicate that key pathogens can survive without pockets.</div>
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Microbial changes after full-mouth tooth extraction followed by 2-stage implant placement.

Microbial changes after full-mouth tooth extraction followed by 2-stage implant placement.

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Abstract

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