Diversity of Lactobacillus species in deep carious lesions of primary molars
| Autor: | S. Rupf, Susanne Kneist, Bernd Thiede, Frank Schmidt, M. Wicht, Brita Willershausen, Angelika Callaway |
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| Rok vydání: | 2010 |
| Předmět: |
Molar
Dental Caries Bacterial counts Dental Pulp Capping Microbiology Calcium Hydroxide chemistry.chemical_compound Isomerism stomatognathic system Humans Medicine Dentistry (miscellaneous) Electrophoretic mobilities Lactic Acid Tooth Deciduous Lactobacillus species Child Caries treatment L-Lactate Dehydrogenase Lacticaseibacillus rhamnosus business.industry food and beverages Temporary restoration Bacterial Load Lactic acid Dental Restoration Temporary Lactobacillus stomatognathic diseases Caries excavation chemistry Spectrometry Mass Matrix-Assisted Laser Desorption-Ionization Dentin Pediatrics Perinatology and Child Health Disease Progression Electrophoresis Polyacrylamide Gel Dental Cavity Preparation business Pulp Capping and Pulpectomy Agents Follow-Up Studies |
| Zdroj: | European Archives of Paediatric Dentistry. 11:181-186 |
| ISSN: | 1996-9805 1818-6300 |
| Popis: | AIM: This was to determine the prevalence of Lactobacilli (LB) species in different stages of caries progression and are considered as secondary invaders of existing carious lesions and specialists for caries progression. METHODS: Carious dentine samples were collected from 70 primary molars (M) during step-wise (S1, S2: n = 35 M) or one-step (O1: n = 35 M) caries treatment and after 11 months of temporary restorations (S3, O2). LB were identified by selected physiological and biochemical characteristics, ratio of lactic acid isomers, electrophoretic mobilities of lactic acid dehydrogenases, and shotgun mass mapping by MALDI mass spectrometry. RESULTS: LB were isolated from 46% of soft dentine samples (S1). The prevalence of LB from hard dentine collected during caries excavation (O1) reached 34%, after 8 weeks of temporary filling (S2) 11%, and 9% each after 11 months of temporary restoration (S3, O2). The mean total bacterial counts (cfu) of soft dentine (S1) were 3.6 × 105. From hard dentine during caries excavation (O1 ) 4.4×104 cfu were calculated, at S2 3.7 × 103 cfu, at S3 0.1 × 103 cfu, and at O2 1.8 × 103 cfu. The percentages of LB in the cfu for LB positive dentine samples were for S1 / S2 / S3 / O1 / O2: 60% (16 M)/34% (4 M)/54% (3 M)/57% (9 M), and 64% (3 M). Five LB species were identified from carious dentine: L. paracasei subsp. paracasei, L. paracasei subsp. tolerans, L. rhamnosus, L. gasseri, and L. alimentarius. CONCLUSIONS: While L. rhamnosus and L. paracasei subsp. paracasei occurred in all caries progression stages, the other species were found only sporadically. L. paracasei subsp. paracasei and L. rhamnosus might be the specialists of the LB in carious progression. |
| Databáze: | OpenAIRE |
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