Bimaxillary concomitant hypohyperdontia in a 10-year-old child

Area of Science:

• Dentistry
• Human Genetics
• Oral Pathology

Background:

• Numerical anomalies like hypodontia (missing teeth) and hyperdontia (extra teeth) are common in human dentition.
• Simultaneous occurrence of both hypodontia and hyperdontia in a single individual, termed concomitant hypohyperdontia (CHH), is exceptionally rare.
• The etiology of CHH remains largely unknown, with reported prevalence ranging from 0.002% to 3.1%.

Observation:

• This case report presents a rare instance of bimaxillary concomitant hypohyperdontia.
• The observed case involved the absence of both mandibular central incisors (hypodontia).
• Concurrently, two supernumerary teeth were present in the maxillary anterior segment (hyperdontia).

Findings:

• The study documents a unique presentation of CHH affecting both the maxilla and mandible.
• This specific case demonstrates a combination of missing mandibular incisors and supernumerary maxillary incisors.
• The bimaxillary nature of this CHH presentation is particularly noteworthy.

Implications:

• This case underscores the importance of recognizing rare dental anomalies for accurate diagnosis and treatment planning.
• Further research into the genetic and developmental factors underlying CHH is warranted.
• Reporting such rare cases contributes valuable data to understanding the spectrum of human dental anomalies.