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Developmental disturbances in permanent teeth after intrusion of their primary predecessors
Author(s) -
RAVN J. J.
Publication year - 1976
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.1976.tb00471.x
Subject(s) - permanent teeth , hypoplasia , intrusion , enamel hypoplasia , maxillary central incisor , anterior teeth , dentistry , medicine , posterior teeth , orthodontics , enamel paint , anatomy , geology , geochemistry
— The frequency and type of developmental disturbances in the permanent teeth in relation to the child's age at the time of injury were examined in 78 patients with 100 intruded primary incisors. The central incisors were found to be the most frequently affected teeth. Only maxillary teeth were involved. The dominating age group was 1–3 years and intrusion was seldom seen after the age of 4 years. The frequency of disturbed normal development of the permanent teeth was 54%. In eight cases the intruded teeth were removed immediately, 86 teeth reerupted, and six teeth did not reerupt. Internal white enamel hypoplasia was seen frequently; external hypoplasia, seldom.