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Standards for mesiodistal and buccolingual crown size and height of primary molars in a sample of Spanish children
Type: Articles
Pubblication date: /9/2009
Authors: E. Barbería*, M.C. Suárez*, G. Villalón**,
Language: English
Institution: *Dental Faculty, Universidad Complutense de Madrid, Spain
**Master Paediatric Dentistry (UCM)
***College of Dental Medicine, Nova Southeastern University,
Fort Lauderdale, Florida, USA
Forsyth Institute, Boston, Massachusetts, USA.
Publication: European Journal of Paediatric Dentistry
Title: Standards for mesiodistal and buccolingual crown size and height of primary molars in a sample of Spanish children
Abstract: Aim The aim of this study was to obtain mesiodistal,
buccolingual and height sizes of dental crowns of first and
second primary molars in a sample of Spanish children given, not
only their anthropological and forensic significance, but also
their clinical interest for the future analysis of restorative and
orthodontic treatments. Materials and methods Measurements
of mesiodistal, buccolingual size and height of the crowns
of primary molars were studied. A transversally descriptive
design was carried out and the interrelationship between these
three dimensions was established. A sample of 703 first and
second primary molars was selected from healthy Spanish boys
and girls from 4 to 9 years old. Molars presenting anomalies of
the crowns, caries or restorations were excluded. Measurements
were made on dental plaster models, using a vernier caliper.
Descriptive statistics and Pearson correlation coefficient was
obtained and Wilcoxon’s non-parametric test was applied for
comparison of the mean, analysis of sexual dimorphism and
comparison of antimeric teeth. Results Average sizes of each
group of molars were obtained. Sexual dimorphism was studied
utilizing the Wilcoxon test. A variability of relationship between
the measurements was found in each molar studied. Primary
second molars had less variability than first molars in the three
measurements obtained. The measurement with the least
variability was height, followed by mesiodistal size.
Conclusions Measurements of primary molars showed that
average sizes of boys’ molars were significantly larger than those
of girls. Relationship between the three measurements studied
was variable but second molars showed less variability than first
molars. The relationship between height and width was found
significant in most of the molars.