Abstract
Objective: The size of primary teeth in the current Brazilian population has not been studied; the aim of this in vitro study was to measure anterior and posterior deciduous teeth in respect to mesiodistal, buccolingual and crown height sizes. Methods: A sample of 1095 deciduous teeth was obtained from a tooth bank at Dental School from São Paulo University. The measurements were made with a digital caliper. Only unworn, undamaged teeth were measured. Results: In mesiodistal diameter, maxillary central incisor showed the highest variation and first mandibular molar showing the least. In buccolingual sizes, mandibular second molar was the tooth with higher variability. Conclusion: This study provides a complete record of deciduous teeth size in Brazilian children. There was an evident variation of size of the primary teeth.
Highlights
Deciduous teeth, forming from the first trimester until about 3 years of age, are a record of prenatal development
The results show that, in mesiodistal diameter, maxillary central incisor was the tooth with the highest variability, followed by mandibular second molar
Mandibular second molar was the tooth with the highest variability
Summary
Deciduous teeth, forming from the first trimester until about 3 years of age, are a record of prenatal development. They express genetic traits and may reflect environmental effects including maternal health, childhood disease and nutrition [1]. Mesiodistal crown diameter, called tooth size, provides significant information on human evolution and biological problems as well as in forensic and clinical dentistry. Anthropologists use mesiodistal diameter to draw the evolution of tooth size. Tooth size provides a perception of connection between populations and environmental adaptation. The relationship between tooth size and dental crowding is reported by authors as being an important factor in clinical practice [4,5,6,7,8,9]
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