Document Detail

Anterior space relations and lower incisor alignment in 9-year-old children born in the 1960s and 1980s.
MedLine Citation:
PMID:  11211296     Owner:  NLM     Status:  MEDLINE    
The anterior arch spaces and the effect of early loss of deciduous canines have been studied in 2 different cohorts of 9-year-old children. One group of 119 children was from Norway and consisted of 56 girls and 63 boys, and 1 group of 133 children was from Sweden and consisted of 72 girls and 61 boys. Within these cohorts, half of the children were born in the 1960s and half in the 1980s. The 1960s group has been compared with the 1980s group to look for anterior arch changes occurring during this period of time. The children who had lost a lost deciduous canine at the age of 9 years were also compared with the children with all deciduous canines remaining. Groups were compared with analysis of variance. It was found that children with a lost deciduous canine at the age of 9 years belong to a group with less available arch space and are a crowded group when compared with an earlier study. For the girls, this was also associated with larger teeth. Anterior arch space did not differ between the 1960s and the 1980s groups except for the Swedish boys, where there was less available mandibular arch space in the 1980s group. The irregularity index for the 4 mandibular incisors was increased in the 1980s group compared with the 1960s group. This could indicate a secular trend toward an increased prevalence of malocclusion in the present population.
R Lindsten; B Ogaard; E Larsson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Angle orthodontist     Volume:  71     ISSN:  0003-3219     ISO Abbreviation:  Angle Orthod     Publication Date:  2001 Feb 
Date Detail:
Created Date:  2001-02-08     Completed Date:  2001-04-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370550     Medline TA:  Angle Orthod     Country:  United States    
Other Details:
Languages:  eng     Pagination:  36-43     Citation Subset:  D; IM    
Department of Orthodontics, The Institute for Postgraduate Dental Education, Jönköping, Sweden.
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MeSH Terms
Analysis of Variance
Cohort Studies
Cuspid / surgery
Dental Arch / anatomy & histology*,  growth & development
Health Transition
Incisor / physiopathology*
Malocclusion / epidemiology,  etiology*
Maxillofacial Development*
Norway / epidemiology
Reference Values
Sweden / epidemiology
Tooth Extraction / adverse effects*
Tooth, Deciduous / surgery
Erratum In:
Angle Orthod 2001 Apr;71(2):156

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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