Reducing the burden of pathogenic mutans streptococci is a goal of oral health. DSMZ16671, even after heat-killing, specifically co-aggregates mutans streptococci in vitro and retains this activity in human saliva. In rats, it reduces mutans streptococcal colonization of teeth and caries scores. This pilot study sought to assess the potential of heat-killed DSMZ16671 (pro-t-action) to reduce levels of salivary mutans streptococci in humans, using sugar-free candies as a delivery vehicle. A randomized, placebo-controlled, double-blind in vivo study of three groups examined the short-term effect of sugar-free candies containing 0 (placebo), 1, or 2 mg/candy piece of heat-killed DSMZ16671 on the levels of salivary mutans streptococci determined before and after consumption of the candies. The candies were consumed 4 times during 1.5 consecutive days. Compared to the placebo group, the test groups' saliva had significantly reduced mutans streptococci as an immediate effect. These results suggest the use of heat-killed DSMZ16671 in suckable candies as a method to reduce mutans streptococci in the mouth and, thereby, caries risk. We think this a new concept and strategy for caries prevention and management.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3825618PMC
http://dx.doi.org/10.1007/s12602-013-9148-9DOI Listing

Publication Analysis

Top Keywords

mutans streptococci
28
heat-killed dsmz16671
12
mutans
8
reduces mutans
8
pilot study
8
levels salivary
8
salivary mutans
8
sugar-free candies
8
streptococci
7
dsmz16671
5

Similar Publications

Streptococci Biotypes in Primary and Permanent Caries: A Case-Control Study.

Int J Clin Pediatr Dent

September 2024

Department of Microbiology, Dr Harvansh Singh Judge Institute of Dental Sciences and Hospital, Panjab University, Chandigarh, India.

Background And Aim: Streptococci, mainly mutans streptococci, are known as the causative microbes of dental caries, but there is limited clarity about their impact on the tooth level and the distribution of streptococci species in different dentition stages. This study evaluates the distribution of streptococci species in primary and permanent teeth in children and adolescents with caries.

Materials And Methods: The study population consisted of two groups: subjects with caries in primary teeth aged 2-5 years and adolescents with caries in permanent teeth aged 12-15 years.

View Article and Find Full Text PDF

Potentiation of antimicrobial photodynamic therapy with potassium iodide and methylene blue: targeting oral biofilm viability.

Photochem Photobiol Sci

December 2024

Department of Health Sciences and Pediatric Dentistry, Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas (UNICAMP), P.O. BOX 52, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil.

The study aimed to assess the impact of combining potassium iodide (KI) with methylene blue (MB) in antimicrobial photodynamic therapy (aPDT) within an oral biofilm formed in situ. A single-phase, 14 days in situ study involved 21 volunteers, who wore a palatal appliance with 8 bovine dentin slabs. These slabs were exposed to a 20% sucrose solution 8 times a day, simulating a high cariogenic challenge.

View Article and Find Full Text PDF
Article Synopsis
  • A single-nucleotide polymorphism in the ManN gene led to unusual traits in glucose phosphotransferase system (PTS) mutants, including increased organic acid excretion and heightened PTS activity, affecting bacterial fitness and carbon catabolite repression.* -
  • Genetic deletions of different PTS components resulted in growth defects on glucose due to excessive hydrogen peroxide (HO) excretion, but these defects were mitigated with catalase supplementation, ultimately enhancing bacterial yield.* -
  • The study suggests that the glucose-PTS plays a crucial role in regulating central carbon metabolism in streptococci, influencing acid production, pH balance, and the bacterial antagonism against harmful oral species, pointing to its potential as a therapeutic target for dys
View Article and Find Full Text PDF

Terahertz Imaging Detects Oral Cariogenic Microbial Domains Characteristics.

J Dent Res

December 2024

State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China.

Dental caries, associated with plaque biofilm, is highly prevalent and significantly burdens public health. is the main cariogenic bacteria that adheres to the tooth surface and forms an abundant extracellular polysaccharide matrix (EPS) as a cariogenic biofilm scaffold. RNase III-encoding gene () and a putative chromosome segregation protein-encoding gene () are potentially associated with EPS production.

View Article and Find Full Text PDF

Extracellular vesicle production by oral bacteria related to dental caries and periodontal disease: role in microbe-host and interspecies interactions.

Crit Rev Microbiol

November 2024

Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile.

Extracellular vesicles (EVs) are cell membrane-derived structures between 20-400 nm in size. In bacteria, EVs play a crucial role in molecule secretion, cell wall biogenesis, cell-cell communication, biofilm development, and host-pathogen interactions. Despite these increasing reports of bacterial-derived vesicles, there remains a limited number of studies that summarize oral bacterial EVs, their cargo, and their main biological functions.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!