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Occlusion in the primary déntition in 3‐year‐old children
Author(s) -
RAVN J. J.
Publication year - 1975
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.1600-0722.1975.tb01189.x
Subject(s) - occlusion , medicine , primary (astronomy) , dentistry , physics , astronomy
– The material for the present study comprises plaster models of 310 Copenhagen children, impressions for which were taken during the month each child attained the age of 3 years. On the basis of fixed criteria a description is given of individual symptoms of occlusion. Using the primary canines as the guide to occlusion it was found that the same occlusion at both sides occurs in 79.7 % of the overall total, the remaining 20.3 % having different occlusion at each side. Approximately one‐half recorded neutral occlusion at both sides, and one‐third had distal occlusion at both sides. The termination pattern of the dental arches in centric occlusion were normal or straight in 68.0 % and bilateral distal in 14.8 %. In 82 subjects or 27 % the degree of overlapping was greater than or equal to half the height of the mandibular central incisors. The number of cross‐bites constituted 11.6% of all subjects. Assessment of spacing was undertaken exclusively on the basis of whether or not a space existed. About 3.5 % of all subjects had close contact between all teeth in the maxilla or crowding, and about 24 % had spacing between all teeth in the maxilla. In the mandible about 5 % had close contact between the teeth and only 15 % had spacing between all teeth in the mandible.