PMID- 17446294 OWN - NLM STAT- MEDLINE DCOM- 20070607 LR - 20200403 IS - 0022-2615 (Print) IS - 0022-2615 (Linking) VI - 56 IP - Pt 5 DP - 2007 May TI - The in vivo dynamics of Streptococcus spp., Actinomyces naeslundii, Fusobacterium nucleatum and Veillonella spp. in dental plaque biofilm as analysed by five-colour multiplex fluorescence in situ hybridization. PG - 681-687 LID - 10.1099/jmm.0.47094-0 [doi] AB - The formation and composition of dental plaque biofilm in vivo are important factors which influence the development of gingivitis, caries and periodontitis. Studying dental plaque biofilm in in vitro models can cause an oversimplification of the real conditions in the oral cavity. In this study, bovine enamel slabs were fixed in an individual acrylic appliance in situ to quantify dental plaque formation and composition using multiplex fluorescence in situ hybridization (FISH) and confocal laser scanning microscopy. Each of the five oligonucleotide probes used for FISH was specific for either eubacteria or one of four frequently isolated bacterial constituents belonging to early and late colonizers of tooth surfaces. The thickness of formed biofilm increased from 14.9+/-5.0 microm after 1 day to 49.3+/-11.6 microm after 7 days. Streptococcus spp. were predominant in 1-day-old dental plaque and decreased significantly after 7 days (P=0.0061). Compared to the first day, Fusobacterium nucleatum decreased after 2 days and increased significantly after 7 days (P=0.0006). The decreases of Actinomyces naeslundii content on day 2 and day 7 were significant (P=0.0028). Changes in Veillonella spp. were not significant during the study period (P >0.05). The results showed that an in vivo observation period of 7 days was required to detect significant changes in Streptococcus spp. and F. nucleatum. The multiplex FISH used is suitable for analysing the dynamics of four important bacterial constituents in the oral biofilm in epidemiological studies. FAU - Al-Ahmad, Ali AU - Al-Ahmad A AD - Department of Operative Dentistry and Periodontology, Albert-Ludwigs-University, Freiburg, Germany. FAU - Wunder, Axel AU - Wunder A AD - Department of Operative Dentistry and Periodontology, Albert-Ludwigs-University, Freiburg, Germany. FAU - Auschill, Thorsten Mathias AU - Auschill TM AD - Department of Operative Dentistry and Periodontology, Albert-Ludwigs-University, Freiburg, Germany. FAU - Follo, Marie AU - Follo M AD - Department of Hematology and Oncology, Core Facility, Albert-Ludwigs-University, Freiburg, Germany. FAU - Braun, Gabriele AU - Braun G AD - Department of Operative Dentistry and Periodontology, Albert-Ludwigs-University, Freiburg, Germany. FAU - Hellwig, Elmar AU - Hellwig E AD - Department of Operative Dentistry and Periodontology, Albert-Ludwigs-University, Freiburg, Germany. FAU - Arweiler, Nicole Birgit AU - Arweiler NB AD - Department of Operative Dentistry and Periodontology, Albert-Ludwigs-University, Freiburg, Germany. LA - eng PT - Journal Article PL - England TA - J Med Microbiol JT - Journal of medical microbiology JID - 0224131 SB - IM MH - Actinomyces/*growth & development MH - Adult MH - *Biofilms MH - Colony Count, Microbial MH - Dental Enamel/microbiology MH - Dental Plaque/*microbiology MH - Fusobacterium nucleatum/*growth & development MH - Humans MH - In Situ Hybridization, Fluorescence/*methods MH - Microscopy, Confocal MH - Streptococcus/*growth & development MH - Time Factors MH - Veillonella/*growth & development EDAT- 2007/04/21 09:00 MHDA- 2007/06/08 09:00 CRDT- 2007/04/21 09:00 PHST- 2007/04/21 09:00 [pubmed] PHST- 2007/06/08 09:00 [medline] PHST- 2007/04/21 09:00 [entrez] AID - 10.1099/jmm.0.47094-0 [doi] PST - ppublish SO - J Med Microbiol. 2007 May;56(Pt 5):681-687. doi: 10.1099/jmm.0.47094-0.