Sunday, November 9, 2008

Ok here it goes then consider:

What causes localised periodontal lesions?

5 comments:

Nikki said...

well perio is caused by bacteria that are naturally found in the mouth; however it only occurs when the numbers of these bacteria significantly increase with the addition of other risk factors such as smoking, diabetes and malnutrition, which effect the way in which the body's immune system reacts to these drugs. localised lesions occur when people are subject to certain individual risk factors, and also have an accumulation of the bacteria in a certain place in their mouth, e.g. around one tooth. This is why scaling/debriding the root surfaces works in managememnt of perio - because it disrupts the bacteria in the area and the bacteria is reduced (with ChX gel etc). It is not spread from one place in the mouth to another (hence remining localised) because the bacteria are naturally present everywhere in the mouth, it is just when they become in larger numbers that the cause localised periodontitis. There is also the possiblilty that the localised periodontitis is a primary endo-perio lesion, which would also be localised, as the pocket would result from a periapical abcess or infection in a particular tooth (e.g. from caries)

i think i have now written enough :) thats my guess!

Nikki said...

ok, and now here is my answer AFTER reading the charter on localised perio - i ws kind of on the right track with the periapical abcess - both other causes of localised perio include cracks and splits in the tooth which allow for the accumulation/build-up of bacteria that eat away bone (was kind of on the right track here) anatomical defects works in a similar way to the crack in the tooth... however i have written down ANUP - i dont quite understand how this is localised as i thought it occurred over a larger area that is also affected by ANUG..? say multiple teeth rather than one or two? is this still classified as localised since it is not over the 'entire' mouth?

sophiek said...

That's much better.. you forgot faulty restorative margins, overhangs etc..

Consider: Is the bacterial challenge (ie bacterial quality) different in a localised pocket? And what is the difference between ANUP and ANUG!!! and can you have both??? How do you know which one may be present???

Nikki said...

for some reason I'm under the imression that you really only ever get ANUP if you also have ANUG? but you can have ANUG without ANUP? is this wrong!?!

and in a localised pocket there is more anaerobic bacteria than in the rest of the mouth.

sophiek said...

Is there a difference between the quality of microbial flora in localised periodontitis than what is found in generalised periodontitis?