<unk> s are estimated to occur in 1.1-9.7% of permanent molars, although higher rates are found when<unk>  detection is performed histologically instead of clinically. The highest prevalence of<unk> s is found in the maxillary third molar, with an incidence of approximately 75%. Other common sites of occurrence include the mandibular third molar, and the maxillary second molar. The presence of two<unk> s on the same tooth occurs in 8.7% of affected teeth, and up to four<unk> s on the same tooth have been documented.
Enamel pearl
Omphalolith
Keratoconus
Nasolabial cyst
Paradental cyst
Onychophosis
Rhinolith
Lethal midline granuloma