exam in a day .........please help

[coming to terms]

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when is prevotella first seen in oral cavity?
in dental caries
long after periodontaldisease
just before periodontal disease?

please reply........

 

[coming to terms]

another q
a bone lesion with radioopaque structures radiating from periphery suggests
osteosarcoma
osteoblastoma
giant cell tumour
multiple myeloma
osteitis deformans

 

[docasrpa]

osteosarcoma

 

[porcelain258]

are u sure its osteosarcoma and why not osteitis deformans....i think both shd have same x ray appearance

 

[KPK]

it's osteosarcoma, (SUN BURST APPEARANCE)
initial radiographic sign of osteo sarcoma: widening of PDL.
osteits deformans is paget's dis & it doesn't have the sun burst appearance at all.

 

[coming to terms]

thanx a lot and wat abt the prevotella one?

 

[econservative]

when is prevotella first seen in oral cavity?
in dental caries
long after periodontaldisease
just before periodontal disease- ans

please reply........

plzz correct me if i am wrong