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References

Goldberg S Biometrics of identical twins from the dental viewpoint. J Dent Res. 1929; 9
Baume LJ Physiological tooth migration and its significance for the development of occlusion. I. The biogenetic course of the deciduous dentition. J Dent Res. 1950; 29:123-132
Sun KT, Li YF, Hsu JT, Tu MG, Hung CJ, Hsueh YH, Tsai HH Prevalence of primate and interdental spaces for primary dentition in 3- to 6-year-old children in Taiwan. J Formos Med Assoc. 2018; 117:598-604
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Increased primate space in the mandible

From Volume 46, Issue 11, December 2019 | Pages 1072-1074

Authors

Anna Buckeridge

BDSc

University of Western Australia, 35 Stirling Highway, Crawley WA 6009, Australia

Articles by Anna Buckeridge

Robert Anthonappa

BDS, MDS(Paed Dent), PhD, AdvDipPaediatrDent, FDSRCS(Edin), MPaedRCS(Edin), MRACDS(Paed), BDS, MDS (Paed Dent), PhD, AdvDipPaediatrDent, FDSRCS(Edin), MPaedRCS(Edin), FADI, FICD, Professor

Discipline Lead and Program Convenor, Paediatric Dentistry, University of Western Australia

Articles by Robert Anthonappa

Email Robert Anthonappa

Nigel King

BDS, MSc, PhD, LDS RCS, Hon FDSRCS, FHKAM, FCDSHK

University of Western Australia, 35 Stirling Highway, Crawley WA 6009, Australia

Articles by Nigel King

Abstract

Primate spaces are diastemata consistent with an inherent physiological pattern rather than functional adaptation. This article presents an atypically increased primate space only in the right mandibular arch.

CPD/Clinical Relevance: Differential diagnoses that can be considered for an asymmetrically enlarged primate space include individual variation, tooth size, arch length discrepancy, infection, traumatic dental injury or an obstructive pathology, such as a malignant neoplasm, developmental cyst, odontoma or supernumerary tooth.

Article

Primate spaces, those between the primary lateral incisor and canine in the maxilla and the primary mandibular canine and first molar in the mandible, are anthropometric diastemata that are consistent with an inherent physiological pattern rather than the result of functional adaptation.1 Approximately 60% of children have primate spaces in their primary dentition.2 Primate spaces are more commonly present in boys than girls and are often noted in the maxillary arch (83.7%) compared with the mandibular arch (61.2%).3

Although there is considerable variation in the presence or absence of primate spaces, they tend to remain stable following the eruption of the primary teeth, with little evidence of primary canine relationship changes in either arch.3 Primate spaces tend to occur more frequently and with wider mesio-distal dimensions in the maxilla compared with the mandible.4

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