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Multiple hyperdontia: Report of an unusual case.
Marilia Nalon Pereira1, Luiz Eduardo de Almeida, Marcelo Tarcísio Martins
1Department of Restorative Dentistry, Juiz de Fora Federal University, Juiz de Fora, Minas Gerais, Brazil.
Summary
This case study details a rare instance of hyperdontia in an 11-year-old girl with 31 supernumerary teeth and a pericentric inversion of chromosome 9. Comprehensive multidisciplinary treatment is essential for managing this complex dental anomaly.
Area of Science:
- Dentistry
- Genetics
- Orthodontics
Background:
- Supernumerary teeth, or hyperdontia, are rare developmental anomalies.
- Multiple supernumerary teeth without associated syndromes are exceptionally uncommon.
- Hyperdontia can be linked to genetic syndromes like cleft lip and palate, trichorhinophalangeal syndrome, cleidocranial dysplasia, and Gardner's syndrome.
Observation:
- An 11-year-old African American female presented with an exceptionally high number of teeth (81 total).
- Radiographs revealed 18 deciduous, 32 permanent, and 31 supernumerary teeth.
- Genetic analysis identified a pericentric inversion of chromosome 9 (46, XX, inv (9) (p13q21)).
Findings:
- The patient exhibited a rare case of non-syndromic hyperdontia with a chromosomal abnormality.
- The extensive number and varied morphology of teeth present significant orthodontic challenges.
- The pericentric inversion of chromosome 9, while noted, was not initially linked to syndromic features.
Implications:
- Management requires a multidisciplinary team including oral surgeons, orthodontists, periodontists, and prosthodontists.
- Treatment necessitates careful planning for extraction of supernumerary teeth and managing dental arch alterations.
- Achieving normal occlusion and esthetic satisfaction presents a complex clinical puzzle requiring innovative solutions.
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