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[1] [3] Tooth regeneration is an ongoing stem cell–based field of study that aims to find methods to reverse the effects of decay; current methods are based on easing symptoms. The cause of cavities is acid from bacteria dissolving the hard tissues of the teeth (enamel, dentin and cementum). [4]
The most common bacteria that causes mouth infections are Streptococcus species. [8] Poor dental hygiene promotes the accumulation of these bacteria at the tooth root, eventually causing a cavity or dental caries. The decaying tooth root provides bacteria with an enclosed environment with low oxygen content.
Different areas of the oral cavity present different ecological niches, and each species has specific properties for colonizing different oral sites. S. mutans is most prevalent on the pits and fissures, constituting 39% of the total streptococci in the oral cavity. Fewer S. mutans bacteria are found on the buccal surface (2–9%). [7]
Rare microbiomes from two 4000-year-old teeth could help scientists further understand the impact dietary changes had on the evolution of a cavity-causing bacteria.
The oral cavity of a new-born baby does not contain bacteria but rapidly becomes colonized with bacteria such as Streptococcus salivarius. With the appearance of the teeth during the first year colonization by Streptococcus mutans and Streptococcus sanguinis occurs as these organisms colonise the dental surface and gingiva.
Due to the infectious nature of bacteria hosted within the oral cavity, bacteria produced cavity can spread within the system of the human body and causes adverse health conditions. [27] Bacteria access comes from the ulcerated epithelium of the periodontal pocket that results from accumulation of infection within the gingiva. Conditions and ...
Periodontal disease typically arises from the development of plaque biofilm, which harbors harmful bacteria such as Porphyromonas gingivalis and Treponema denticola. These bacteria infect the gum tissue surrounding the teeth, leading to inflammation and, if left untreated, progressive damage to the teeth and gum tissue. [9]
A type of bacteria that causes dental plaque may be behind a treatment-resistant form of colorectal cancer, a study published Wednesday in the journal Nature found.. The particular bacterium ...