עמוד 1 מ 42 תוצאות
We have studied the ultrastructure of the epithelium lining the tympanic cavity of chicken, using two embedding techniques. In certain cases, the epithelium was minced in Karnovsky fixative, post-fixed in osmium, dehydrated and embedded in Epon, following the usual methods. No morphologically
The present study evaluated the effects of slightly demineralizing treatments on dentinal cavity walls, since some recently developed adhesive procedures are applied over the smear layer. Ten experimental treatments--mechanical, chemical or mechanical/chemical--were applied on MOD cavity walls
The effects of a 25% tannic acid solution applied to the surface of prepared dentin was compared with untreated prepared dentin surfaces. The following results were demonstrated by electron microscope observation: (1) cavity preparations created an amorphous dentinal smear layer, (2) placement of a
This study examined the effects of tannic acid on smear layer removal. Class V cavities were prepared on the buccal surfaces of extracted human molars with a No. 1557 high-speed carbide bur under water cooling for cutting and a No. 701 low-speed steel bur for finishing. They were then washed with
Gaseous emissions from livestock production are complex mixtures including ammonia, methane, volatile organic compounds (VOC) and H2S. These contribute to eutrophication, reduced air quality, global warming and odor nuisance. It is imperative that these gases are mitigated in an environmentally
Extrinsic discoloration of teeth following a large consumption of tannin-containing beverages or a prolonged use of chlorhexidine mouthrinses is a well known observation. Tannins as well as chlorhexidine are denaturing agents. Based on preliminary studies revealing the presence of iron in
The purpose of this study was to evaluate the inhibitory effects of herb extracts on caries-related bacteria and glucan of dental plaque in vitro. Bacterial sensitivity tests were done using broth dilution, and the phenol sulphate method was used to assess glucan inhibition. The results showed that
This study aimed to evaluate the inhibitory effects of herbal extracts on caries-related bacteria, glucan and biofilm in vitro. Sensitive tests of bacteria were carried out by broth dilution method on a 96-microwell plate. Glucan inhibition tests were carried out using the phenol sulphate method. A
Arresting Caries Treatment (ACT) has been proposed to manage untreated dental caries in children. This prospective randomized clinical trial investigated the caries-arresting effectiveness of a single spot application of: (1) 38% silver diamine fluoride (SDF) with tannic acid as a reducing agent;
Tannic acid, a hydrolysable tannin, exists commonly in food plants. Tannic acid has already been shown various anticancer mechanisms such as inhibiting the proliferation, inducing a higher apoptotic rate and slowing down the metastasis of different cancers. Moreover, tannic acid was reported to
In the present in situ/ex vivo study the impact of tannic acid on the erosion-protective properties of the enamel pellicle was tested. Additionally, the antiadherent and antibacterial effects of tannic acid were evaluated.
The pellicle was formed in situ on bovine enamel samples fixed on individual
Tannic acid, total, complexed and ionized fluoride, calcium, total phosphate, zinc, aluminium, copper, iron, mercury and manganese were determined in infusions prepared from some or all of 30 brands of tea. Mercury and copper were not detected. Significant positive correlations were observed between