Hypodontia of all primary canines
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Several hypotheses have been proposed to explain hypodontia of the various tooth types with evolutionary and anatomic models. Hypodontia of all primary canines in a healthy individual is exceptionally rare and has not been previously reported in the dental literature.
This clinical report describes a 4-year-old southern Chinese female with the congenital absence of the primary canines in all quadrants. Furthermore, all of the permanent tooth germs excluding the third molars were evident on a panoramic radiograph and were developing consistent with the subject’s chronological age.
This case serves as an excellent example to refute the conventional wisdom that “all primary canines can never go missing” and that all of the currently proposed hypotheses to explain hypodontia have limitations.
KeywordsHypodontia Primary teeth Canines
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Conflict of interest
The authors declare that they have no conflict of interest.
Research involving human participants and/or animals
This article does not contain any studies with human participants performed by any of the authors.
Informed consent was obtained from the individual participant included in this report.
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