OBJECTIVE To isolate Helicobacter pylori (HP) from the dental plaque of a selected group of children and to compare the oral and salivary findings of patients with those of a healthy control group. METHODS A total of 70 children aged 5-15 years were included in this study. An intraoral examination was performed for each patient, and dental plaque and saliva specimens were collected for analys...

BACKROUND The study is focused on increased risk of dental plaque accumulation among the children undergoing orthodontic treatment in consideration of individual hygiene and dietary habits. MATERIALS AND METHODS The study was conducted among 91 children aged 7-14 including 47 girls and 44 boys. The main objectives of the study were: API index, plaque pH, DMF index, proper hygiene and dietary ...

Dental caries results from prolonged plaque acidification that leads to the establishment of a cariogenic microflora and demineralization of the tooth. Urease enzymes of oral bacteria hydrolyze urea to ammonia, which can neutralize plaque acids. To begin to examine the relationship between plaque ureolytic activity and the incidence of dental caries, recombinant, ureolytic strains of Streptococ...

Prevention-5 th class Lect 1 Diet and dental caries The role diet and nutrition in the etiology and pathogenesis of caries may be viewed as systemic (nutrition) and local effect (diet) In general, the term diet refers to food and drink consumption (diaita ‘way of life’) while nutrition refers to a process by which living organisms physiologically absorb and metabolize food to ensure growth, ene...

PURPOSE The objective of this study was to determine the caries-related risk associated with human breast milk (HBM). METHODS First, the plaque pH of 18 children (12-24 months) was monitored before and after a five-minute feeding with HBM to determine the pH drop and minimum pH obtained. Second, Streptococcus sobrinus 6715 was cultured for 3 hr in HBM, and the increase in the number of colony...

Tooth decay is a serious health risk and a significant contributor to health care costs in both industrialized and developing nations. Tooth decay is the end result of a change in the balance of plaque ecology towards more acidogenic and aciduric bacterial species. Frequent and prolonged periods of low plaque pH, facilitated by the presence of fermentable simple carbohydrates drive the cycles o...

Summary Background & aims Oral nutritional supplements (ONS) administered to malnourished elders and other patients contain high-levels of carbohydrates that could be a potential risk factor for dental caries. This study aimed evaluate the cariogenic potentials ONS using intraoral plaque telemetry. Methods Ten were tested on five healthy volunteers (mean age: 76.8 ± 9.15 years). Participants re...

The activity of calcium in plaque fluid is needed to calculate the saturation level of that fluid relative to the tooth mineral. One method to determine the calcium activity in very small plaque fluid samples is by micro ion-selective electrode (ISE). Two commercially available calcium ionophores, a neutral-carrier and a charged-carrier, were evaluated in micro ISEs and compared to a commercial...

Nine virulent bacteriophages of the anaerobe Corynebacterium (Propionibacterium) acnes, the P-a series, are DNA phages, with long, curved nonretractile tails (130 nm) without tail plates or fibers. They have isometric heads (420 by 460 nm), and are placed in Bradley's group B-1. There is permanent plaque suppression at highest phage concentrations. After 100- to 1,000-fold dilution, plaques are...