Changes

Odontogenic tumors (OT) arise from remnants of the embryonic tissues destined to develop into teeth and associated structures. They originate from remnants of odontogenic epithelium (rests of Malassez and rests of Serres located within the periodontal ligament stroma and gingiva, respectively), odontogenic mesenchyme, or a combination of the cellular elements that comprise the tooth-forming apparatus. Clinical behavior ranges from hamartoma-like proliferations to benign and invasive neoplasms.  

Odontogenic tumors (OT) arise from remnants of the embryonic tissues destined to develop into teeth and associated structures. They originate from remnants of odontogenic epithelium (rests of Malassez and rests of Serres located within the periodontal ligament stroma and gingiva, respectively), odontogenic mesenchyme, or a combination of the cellular elements that comprise the tooth-forming apparatus. Clinical behavior ranges from hamartoma-like proliferations to benign and invasive neoplasms.  

Histologically, OT may mimic some stage of the developing tooth bud.There may be soft tissues of the dental organ or dental pulp, or they may contain hard tissue elements of enamel, dentin, and/or cementum. With the exception of the canine peripheral odontogenic fibroma (formerly fibromatous epulis) and canine acanthomatous ameloblastoma (formerly acanthomatous epulis), OT are considered uncommon in animals.

Histologically, OT may mimic some stage of the developing tooth bud. There may be soft tissues of the dental organ or dental pulp, or they may contain hard tissue elements of enamel, dentin, and/or cementum. With the exception of the canine peripheral odontogenic fibroma (formerly fibromatous epulis) and canine acanthomatous ameloblastoma (formerly acanthomatous epulis), OT are considered uncommon in animals.

One classification utilized the tissue of origin as the basis for distinguishing OT. The three resulting groups are:  

One classification utilises the tissue of origin as the basis for distinguishing OT. The three resulting groups are:  

*Those consisting of odontogenic epithelium without odontogenic mesenchyme;  

*Those consisting of odontogenic epithelium without odontogenic mesenchyme;  

*Tumors arising from odontogenic epithelium and mesenchymal cells, with or without dental hard tissue formation;  

*Tumors arising from odontogenic epithelium and mesenchymal cells, with or without dental hard tissue formation;  

==Reactive Lesions==

==Reactive Lesions==

Reactive lesions are non-neoplastic gingival enlargements that are commonly grouped under the previously noted nondescript classification of Epulides. The term ‘epulis’ (singular) has no specific histopathologic connotation and is a clinical designation for any localized, exophytic swelling on the gingiva. Reactive lesions include focal fibrous hyperplasia, pyogenic granuloma, peripheral giant cell granuloma and reactive exostosis. Marginal excision of these lesions, without inclusion of adjacent normal tissue, is generally sufficient, as local recurrence is uncommon.  

Reactive lesions are non-neoplastic gingival enlargements that are commonly grouped under the previously noted nondescript classification of epulides. The term ‘epulis’ (singular) has no specific histopathologic connotation and is a clinical designation for any localized, exophytic swelling on the gingiva. Reactive lesions include focal fibrous hyperplasia, pyogenic granuloma, peripheral giant cell granuloma and reactive exostosis. Marginal excision of these lesions, without inclusion of adjacent normal tissue, is generally sufficient, as local recurrence is uncommon.  

{{unfinished}}

{{unfinished}}

[[Category:To Do - Dentistry preMars]]

[[Category:To Do - Mars Check]]