Izvorni znanstveni članak
Variations of depth of overlap in children during teeth change
M. Jović
; Klinika za ortopediju vilica Stomatološkog fakulteta, Beograd
K. Kravić
; Medicinski centar, Pančevo
M. Trifunović
; Medicinski centar, Smederevo
Sažetak
The individual changes in the depth of the incisor overlap were analysed in children with neutroocclusion aged from 7— 10 and from 10— 13 years. The variations of the depth of the incisor overlap in both groups including 257 subjects aged 7 years and 333 subjects aged 10 years have been divided into the following subgroups: open overlap, marginal normal and deep overlap of the incisors. The average depth of the incisor overlap in children aged 7— 10 increases for 0.75 mm and in those aged 10— 13 for 0.30 mm. In groups with preserved firs t permanent molars this increase is less expressed. The individual observation of each subject with open and marginal overlap of the incisors shows spontaneous corrections in over 75% of children aged 7— 10 years and only in 50% of children with preserved firs t permanent molars. In cases with deep incisor overlap an aggravation is found in 57.90% of childeren. In children aged 10— 13 the changes of the marginal overlap in the sense of spontaneous correction are less expressed as well as the percentage of cases with an increased overlap. The extraction of the first permanent molar have higher effect in children with open overlap than in cases with expressed deep overlap of the incisors.
Ključne riječi
Hrčak ID:
105880
URI
Datum izdavanja:
15.9.1979.
Posjeta: 1.226 *