ectopic eruption


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ec·top·ic e·rup·tion

(ek-topik ē-rŭpshŭn)
Tooth eruption in an abnormal location.
References in periodicals archive ?
Thompson, "Extreme ectopic eruption of the lower permanent lateral incisor," American Journal of Orthodontics, vol.
O'Meara, "Ectopic Eruption Pattern in Selected Permanent Teeth," Journal of Dental Research, vol.
Dental anomalies (Agenesis, supernumerary teeth, ectopic eruption, Impaction) were investigated from pretreatment diagnostic records.
Ectopic eruption was the most common (46.8%), followed by Agenesis (missing tooth or teeth) 9.0%, impaction 4.0% (canine) and supernumerary teeth 1.3% as shown in Table 1.
Significant reciprocal association (p<0.008) was detected among four types of dental anomalies (second premolar agenesis, reduced size of the upper side incisive, upper first molar infra-ochlesis, upper canine ectopic eruption).
First molar ectopic eruption seems to be a separate pathological entity compared with all the other dental anomalies examined (Baccetti & Tollaro).
Key words: Ectopic eruption, first permanent molar, dental anomalies, cleft lip and palate.
(11,18) Despite the occurrence of severe ectopic eruption in the present case, developmental disturbances such as discoloration, hypoplasia, crown or root dilaceration or root angulation were not observed in the affected permanent incisor.
Key words: Ectopic eruption, nasal tooth, oro-facial-digital syndrome, supernumerary tooth
Agenesis (a congenital absence of a permanent tooth or germ), supernumerary teeth (teeth that ap-pear in addition to the regular number of teeth), ectopic eruption (eruption of a tooth in an abnormal position), Impaction (a tooth that is not expected to erupt com-pletely into its normal functional position based on clinical and radiographic assessment).
Most frequent was the buccal/labial ectopic eruption, 38 out of 41 (93%), followed by palatal impac-tion, 2, (5%) and the lingually blocked out ectopic canines, 1 (2%).
Clinically, supernumerary teeth can cause various problems locally such as retention of the primary tooth, delayed/failure of eruption of the permanent tooth, ectopic eruptions, tooth displacements, follicular/dentigerous cysts, and other alterations which require surgical or orthodontic intervention [10,11].