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==Introduction==  

==Introduction==  

Peripheral odontogenic fibroma is a benign tumour that arises from the [[Enamel Organ#Periodontal Ligament|periodontal ligament]]. It was previously known as a fibromatous epulis and ossifying epulis depending on the degree of mineralization.  

Peripheral odontogenic fibroma is a benign tumour that arises from the [[Enamel Organ#Periodontal Ligament|periodontal ligament]]. It was previously known as a fibromatous epulis and ossifying epulis depending on the degree of mineralization.  

They present as firm, smooth swellings of the [[Gingiva|gingiva]] and are normally indistinguishable from [[Gingival Hyperplasia|gingival hyperplasia]].

They present as firm, smooth swellings of the [[Gingiva|gingiva]] and are normally indistinguishable from [[Gingival Hyperplasia|gingival hyperplasia]].

==Pathology==

==Pathology==

[[Image:epulis.gif|right|thumb|125px|<small><center>Canine Epulis(Courtesy of Alun Williams (RVC))</center></small>]]

[[Image:epulis.gif|right|thumb|200px|<small><center>Canine Epulis(Courtesy of Alun Williams (RVC))</center></small>]]

Proliferation of fibrous tissue with a variety of osteoid, [[Enamel Organ#Cementum|cementum]] or [[Enamel Organ#Dentine|dentine]] like material. Isolated strands or islands of odontogenic epithelium are always present (ie: suggesting induction of connective tissue by the epithelial cells).  

Proliferation of fibrous tissue with a variety of osteoid, [[Enamel Organ#Cementum|cementum]] or [[Enamel Organ#Dentine|dentine]] like material. Isolated strands or islands of odontogenic epithelium are always present (ie: suggesting induction of connective tissue by the epithelial cells).  

The stroma contains neoplastic fibroblasts, with varying cellularity and the overlying epitheluim is normal.

The stroma contains neoplastic fibroblasts, with varying cellularity and the overlying epitheluim is normal.