<unk> s originate from the<unk>  epithelium (dental lamina) in the alveolus left from tooth development stages. They are mainly thought to arise from rests of Serres. Genetics Sporadic (non-syndromic) and syndromic<unk> s are associated with mutations in the gene PTCH found on chromosome 9q, which is part of the Hedgehog signaling pathway. PTCH is a tumour suppressor gene. Loss of PTCH activity leads to a brake in the cell cycle. A third of<unk> s show mutations in PTCH, resulting in the cyst epithelium undergoing highly proliferative activity. This leads to growth of the cyst wall and when removed favours recurrence if following incomplete removal of the epithelium.
Odontogenic keratocyst
Dentigerous cyst
Glandular odontogenic cyst
Cholesteatoma
Pseudolymphoma
Aquarium granuloma
Enamel pearl
Idiopathic facial aseptic granuloma