Search results
Results From The WOW.Com Content Network
Four things are required for caries to form: a tooth surface (enamel or dentin), caries-causing bacteria, fermentable carbohydrates (such as sucrose), and time. [20] This involves adherence of food to the teeth and acid creation by the bacteria that makes up the dental plaque. [21]
Those microorganisms nearest the tooth surface typically obtain energy by fermenting dietary sucrose; during fermentation they begin to produce acids. The bacterial equilibrium position varies at different stages of formation. Below is a summary of the bacteria that may be present during the phases of plaque maturation:
Dental caries—Dental caries are known as cavities or tooth decay. Bacteria in the mouth use foods that contain sugar or starch to produce acids which eat away at the tooth’s structure causing destruction to the enamel of the teeth. Meanwhile, the minerals in saliva (calcium and phosphate) together with fluoride are repairing the enamel. [3]
Other bacteria, including Streptococcus mutans, are able to grow in these colonies. Streptococcus mutans is important, because it is associated with dental caries. [5] These bacteria produce the enzyme glucosyltransferase. Glucosyl transferase converts sucrose into exopolysaccharides. These exopolysacharides create a sticky environment that ...
The most important bacterium involved with tooth decay is Streptococcus mutans, but the number and type of bacteria varies with the progress of tooth destruction. [25] Furthermore, tooth morphology dictates that the most common site for the initiation of dental caries is in the deep grooves, pits, and fissures of enamel.
While the junctional epithelium is a stratified and thin epithelium that is attached to the tooth surface, the epithelium of the gingival sulcus is stratified squamous and thicker non-keratinised. Presence of Rete Pegs which may be prominent epithelial ridges can also be found in the gingival epithelium that is a stratified squamous, thick and ...
The low-pH environment in the biofilm matrix erodes the surface of the teeth and begins the "initiation" of the dental caries. [19] Streptococcus mutans is a bacterium which is prevalent within the oral environment [ 22 ] and is thought to be a vital microorganism that contributes to this initiation. [ 23 ]
In dentistry, the smear layer is a layer found on root canal walls after root canal instrumentation. It consists of microcrystalline and organic particle debris. It was first described in 1975 and research has been performed since then to evaluate its importance in bacteria penetration into the dentinal tubules and its effects on endodontic treatment.