The streptococcal transposon Tn916 (Tcr) was used to isolate mutants of Streptococcus mutans altered in glycogen accumulation to investigate whether glycogenlike intracellular polysaccharides (IPS) play an important role in S. mutans-induced caries formation. S. mutans UA130 (serotype c) was transformed with the Escherichia coli plasmid pAM620 (Tn916), and the resultant transposon libraries wer...

BACKGROUND/PURPOSE Although habitual consumption of xylitol reduces cariogenic streptococci levels, its effect on beneficial oral streptococci is less clear. The main aim of the study is to investigate the effect of short-term xylitol consumption on the oral beneficial streptococci level of saliva, Streptococcus sanguinis and S. mitis. MATERIAL AND METHODS Twenty four volunteers with a median...

The aim of this study is to analyze ozone impact on some cariogenic bacteria in ex vivo and in vitro conditions. The in vitro part of study inoculated dentine with strains of Streptococcus mutans ATCC 33402 and Lactobacillus paracasei ATCC 11974 bacteria. Samples of dentine before and after 40s ozone treatment were collected and anaerobically incubated. Samples of cariogenic dentine (N = 24) we...

Aim. The aim of the present study was to search the manner in which cariogenic bacteria might coexist with know bacteria that produce volatile sulfur compounds and represent the cause of habitasis. Materials and methods. 100 patients aged 11-21y with palatal clefts and malocclusions were divided into two groups: group A was treated with fixed orthodontic appliances, group B was treated with rem...

Introduction. Plant extracts may be suitable alternative treatments for caries. Aims. To investigate the in vitro and in vivo antimicrobial effects of Plantago lanceolata herbal tea (from flowers and leaves) on cariogenic bacteria and to identify the major constituents of P. lanceolata plant. Materials and Methods. The MIC and MBC against cariogenic bacteria were determined for P. lanceolata te...

(1) Background: The current practice in dental medicine aims to perform non-invasive treatments, which preserve as many hard tissues possible. This trend is based on the final appearance, should be aesthetic and close natural teeth use of Icon DMG can considered revolutionary treatment white spot lesions (WSLs) caused by various factors. (2) Methods: A diagnosis was established after clinical i...

The present study was designated to evaluate the antimicrobial activities of various solvent extracts from fruits of Terminalia chebula. The preliminary antimicrobial activities of the extracts against cariogenic organisms were tested by using disc diffusion assay. The methanolic extract showed higher antimicrobial activity against all the cariogenic organisms tested. Based on this finding, the...

The aim of this study was to compare the efficacy of two preventive protocols -fluoride gel (F) alone or combined with chlorhexidine varnishes (CHX) - on sialochemical, clinical and microbiological parameters in a group of children at high cariogenic risk Two therapeutic-preventive protocols were applied in 73 children at high cariogenic risk (average age 6.2 +/- 1.4 years old) and clinical par...