styloid said:
hi mekha ,can u give some references u look very confident abt ur answer!!!!!!!
ans -puberty
hey friend i cant give u the content which has copyright issues , search for it and you find it .
strept salivarius dominates(98%) -0 to 6 months
then mutants and sanguis in 6to 9months depending on tooth eruption because it needs gingival crevice
infants oral flora is similar to the mother .
bacteriodes and spirochetes comes late in life in puberty (teenage).prevotella was considered a subclass of bacteriodes melaninogenicus ,now known as prevotella intermedia .
I double checked ,prevotella is seen in eop(early onset peridontitis) and adult peridodontitis ,true , ,if we want to isolate it u have to go to a pathological site in the body , just to prove these r normal habitats in mucosal surface i am quoting this from a reputed site .
Anaerobes that are part of the indigenous flora of the oral cavity can be recovered from various infections adjacent to that area, such as infectious cervical lymphadenitis,subcutaneous abscesses and infected burns in proximity to the oral cavity; infected human and animal bites paronychia; tonsillar and retropharyngeal abscesses chronic sinus infection. chronic otitis media; periodontal abscess ,infectious thyroiditis. aspiration pneumonia,empyema and bacteremia associated with one of the above infections.The predominant anaerobes recovered from these infections are species of anaerobic gram-negative bacilli (including pigmented Prevotella and Porphyromonas , Prevotella oralis and other Prevotella species, and Fusobacterium ) and gram-positive anaerobic cocci ( Peptostreptococcus species), which are all part of the normal flora of the mucosal surfaces of the oral, pharyngeal, and sinus cavities .
as u said " if it is
immediately before periodontal disease " ,imagine just before periodontal patho, prevotella comes and camps and cause this!!,where does prevotella come from then?
so u decide which is good for you!!!