Malpositioning, or ectopic placement, of teeth is believed to result from a disturbance of the tooth developmental structure. Various forms of the disorder tend to be associated with one another and with hypodontia. It is important to recognize ... Malpositioning, or ectopic placement, of teeth is believed to result from a disturbance of the tooth developmental structure. Various forms of the disorder tend to be associated with one another and with hypodontia. It is important to recognize any associations of tooth anomalies as early diagnosis of developmental disturbance in a single tooth may reveal a potential risk of future position or eruption disturbances of other teeth and thus allow early intervention (Bjerklin et al., 1992).
In each of 4 Finnish kindreds, Svinhufvud et al. (1988) found a typical type of malposition of cuspids (canine teeth): palatal displacement of upper lateral incisor(s) and/or cuspid(s) in kindred A; labial displacement of upper cuspids, sometimes also ... In each of 4 Finnish kindreds, Svinhufvud et al. (1988) found a typical type of malposition of cuspids (canine teeth): palatal displacement of upper lateral incisor(s) and/or cuspid(s) in kindred A; labial displacement of upper cuspids, sometimes also lower cuspids, in kindred B; rotated upper cuspid(s) in kindred C; and labial cuspid(s), with rotated, malpositioned, or missing second bicuspids in kindred D. In each kindred other anomalies occurred, such as malposition, malformation, or hypodontia of upper lateral incisors, second bicuspids, and lower central incisors. Alexandrakis et al. (2000) described 2 patients with nasolacrimal duct obstruction (NLDO), presenting as epiphora, caused by ectopic eruption of teeth. Surgical removal of the ectopic teeth compressing the nasolacrimal duct resulted in resolution of the lacrimal drainage obstruction. The authors concluded that ectopic eruption of teeth should be added to the differential diagnosis of NLDO.