MICROORGANISMS & THE COMPLEXES

Yellow complex – leads to gingivitis and periodontitis (seen in years old patient)
Or purple complex –
o most abundant
o Color complex of calculus in 18 y yellow or purple.**
o fusobacterium nucleatum – bridging micro- organisms
Secondary colonization :RED,GREEN , ORANGE
o Grame -ve facultative anaerobes
o Rods nd filaments

 Complexes seen:

o Red complex:
 Bleeding on probing +ve
 P gingivilis – chronicgeneralised periodontitis
 Treponima denticola(spirochetes) – ANUG / ANUP**
 T Forsythia

o Green complex
 AA comitans – localized aggressive perio (LAP)**
 Capnocytophagem – puberty gingivitis(18 year old female)

o Orange complex*
 P intermedia – pregnancy gingivitis
 Fusiform – ANUG
 Campylobacter

o Pregnancy – orange complex
o Smokers = red+orange+tannernella forynthe