Kraniometrische Querschnittsstudie über die transversale Entwicklung vom Säugling bis zum Erwachsenen : Korrelationen zwischen Kranium-, Gebiss- und Unterkieferbreite
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Philipps-Universität Marburg
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Abstract
The craniofacial system and the knowledge about its development form a major component in the orthodontic therapy. Various studies investigated the saggital and vertical craniofacial growth but only a few studies, to our knowledge, present data about the transversal craniofacial growth. Therefore, the current study intends to investigate transversal craniofacial growth from the age from infant until adulthood, as well as the correlation between the width of the cranium, dental arch and mandible. Two-hundred-and-one macerated craniums of the orthodontic department at the University in Marburg were measured. Callipers, Korkhaus divider and a line laser module were used to measure the different anatomic lengths. Data are presented as mean, scatter plots and histograms; partial correlation and factor analyses were performed.
The largest postnatal transversal growth was found at the zygomatic arches with 29.1mm. The growth tendency was decreasing further cranial, caudal and ventral of the zygomatic arches. The skeletal base of the maxilla presented the largest transversal growth up into adulthood with 12.5mm, whereas a decrease in growth velocity was found after the age of eight. The dental base increased transversally 5.0mm until the age of 12 years, followed by a growth termination. The apical base showed the lowest transversal increase with 2.9mm until adulthood. As a result we recommend orthodontical growth influencing techniques in the area of the dental base up to the age of 12 years and in the area of the apical and skeletal base until the age of 19 years. Minimal transverse growth was found at the dental-, apical- and skeletal base of the mandible and hence expansion seems to be less efficient.
Partial correlation analysis showed a significant relationship between facial width and dental arch width (r=0.7 to 0.85) of the permanent teeth of the maxilla. The most prominent correlation was found between the dental arch width of the maxilla and the intercondylary distance (r=0.87) and zygomatically arch width (r=0.85). This correlation was not significant in the deciduous dentition. The apical base of the maxilla did not depend on other anatomic dimensions. The width of the mandible in the area of the condylus significantly depended on the width of the cranium. This correlation was weaker at the angulus mandibulae and nearly disappeared at the dental, apical and skeletal base of the mandible. Therefore, the correlation between mandibular width and the width in the upper viscerocranium decreased in a ventro-caudal direction. Further studies are needed to investigate whether intercondylar width and zygomatic arch width can be used to calculate dental arch width in clinical practice.
The still used Pont index is founded on an assumed relationship between incisor width and dental arch width. Partial correlation analysis in the present study did not support this assumption. The calculation of the Pont index was rather unspecific and therefore cannot be recommended for further clinical use.
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Created: 2008Issued: 2008-02-20Updated: 2011-08-10
Faculty
Medizin
Publisher
Philipps-Universität Marburg
Language
ger
Data types
DoctoralThesis
Keywords
Maxillofacial developmentCraniometryMaxillaCorrelation studyFacial bonesTransversal growthKraniofaziale EntwicklungMandible, dental arch
DFG-subjects
TransversalwachstumOberkieferbreiteKorrelationsstudieGesichtsbreiteUnterkieferbreiteZahnbogenKraniometrie
DDC-Numbers
610
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Braun, Ingmar: Kraniometrische Querschnittsstudie über die transversale Entwicklung vom Säugling bis zum Erwachsenen : Korrelationen zwischen Kranium-, Gebiss- und Unterkieferbreite. : Philipps-Universität Marburg 2008-02-20. DOI: https://doi.org/10.17192/z2008.0023.
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This item has been published with the following license: In Copyright