Dental calculus or tartar is an adherent calcified mass that form on the surface of teeth and dental appliance through mineralization of bacterial dental plaque in aqueous environment. Dental calculus plays a vital role in aggravating the periodontal disease by acting as reservoir for the bacterial plaque and providing the protected-covered niche for bacteria to proliferate. Based upon the loca...

AIM To establish a competitive PCR (cPCR) assay for quantitation of H pylori organisms in dental plaque samples. METHODS The cPCR co-amplified target H pylori DNA and a known amount of internal standard template in the same tube with the same primers directed to 0.86 kb DNA of H pylori. The internal standard was a synthesised DNA bearing the same primer recognition sites at two ends and a non...

Eight dental students (designated Group A) and 8 patients with clinical gingivitis (group B) were the sub­ ject o f this experiment. The average gingival index in Group A was less than one and in Group B it was greater than two. Using an antimony micro-electrode measurements o f supragingival plaque pH and gingi­ val crevicular pH were made. These readings were analysed by comparing their means...

The presence of Streptococcus mutuns in dental plaque may be related to human dental caries. The cultural identification of this organism in plaque is not likely to be used routinely in a clinical or epidemiological situation. In an effort to develop a simpler diagnostic means of identifying Strep. mutans in plaque, antisera were prepared for the 5 known serotypes of Strep. mutuns. These immune...

background there is inconclusive evidence about the relationship between toothbrush wear and plaque removel. the aim of this study was to compare the effectiveness of new and 3 month-old toothbrush in the removal of dental plaque. material and methods in a randomized single blind clinical trial 63 students attended from awaz dental school. subjects were divided to three groups. plaque was score...

statement of problem: fixed orthodontic appliances in the oral cavity make tooth cleaning procedures more complicated. objectives: this study aimed to compare the efficacy of computerized oral hygiene instruction with verbal technique among fixed orthodontic patients referred to the evening clinic of orthodontics of shiraz dental school. materials and methods: a single-blind study was performed...

Triclosan has been incorporated into toothpaste to enhance inhibitory effects on bacterial metabolism in dental plaque. Many studies have confirmed these effects by showing a reduction of accumulation of dental plaque, gingivitis and calculus. However, there is no evidence for triclosan having an inhibitory effect on the dental plaque-induced demineralization of the dental hard tissues. Therefo...

dental plaque is a well known etiologic factor for gingivitis. recently, herbal extracts are a matter of scientific interest to inhibit plaque accumulation on teeth. the purpose of this study was to evaluate the effects of german chamomile (gc) mouth wash on plaque and gingival indices. twenty five gingivitis patients (15 female and 10 male, mean age 27±7.76 years) participated in this controll...

introduction: nowadays in the field of dentistry, there is a trend to encourage the use of herbal and natural products. the high level of clinical research in terms of considering green tea and aloe vera, with various functionality for individual use is a typical example. the purpose of this randomized, controlled, and double-blind study was to evaluate comparative evaluation of green tea-aloe ...

Helicobacter pylori (Hp) were detected in the dental plaque in 40 patients with peptic ulcer, chronic gastritis or gastric cancer with rapid urease test, anti-Hp fluorescein-labelled antibody staining, bacterial culture and electronic microscopy. At the same time, biopsy specimens from the gastric antrum of these patients were studied with WS staining and rapid urease test to detect Hp. The res...