2. Mesenchymal
Odontogenic tumors
• Benign mesenchymal tumor
(Benign tumor of
fibrous connective
tissue)
• The most common benign soft
tissue neoplasm in the oral cavity
Peripheral
Central
3. •Well defined
•Normal color of oral mucosa or slightly paler
•Sessile or pedunculated
•Smooth , non ulcerated surface unless traumatized
8. THE SURFACE OF THE LESION IS COVERED BY A
LAYER OF STRATIFIED SQUAMOUS EPITHELIUM
WHICH FREQUENTLY APPEARS STRETCHED AND
SHOWS FLATTENING OF THE RETE PEGS.
Hyperplastic
fibrous C.T
stretched St.sq.epithelium
flattening of the rete pegs
9. AREAS OF CALCIFICATION OR EVEN OSSIFICATION
MAY BE DETECTED IN SOME FIBROMAS ESPECIALLY
THOSE OF GINGIVA AND HARD PALATE
10. •WHEN THE LESION IS TRAUMATIZED OR
IRRITATED
Inflammatorycells,vasodilatationand
inflammatoryedema
• MAY DEVELOP FROM PYOGENIC GRANULOMA
•PRESENCE OF FIBROMAS AFFECTS NORMAL
FUNCTIONING AND ESTHETICS
MAY CAUSE SOCIAL AND EMOTIONAL PROBLEMS
14. A 40 years old female complain of painless
slowly growing mass in the left side of hard
palate in 4,5 region since 2years
No history of any traumatic injury, pain or pus
drainage
Size : 0.5 x 0.5 cm.
On palpation : slightly
pedunculated – non tender
– didn’t blanch on pressure
–rubbery in consistency
15. Upper left 4,5
Mild horizontal bone
loss with canine, first
and second premolars.
No root resorption or
tooth displacement.
Bone around the
outer limit of the lesion
is normal