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Two cases with supernumerary teeth in lower incisor region.
Taishi Yokose1, Teruo Sakamoto, Kenji Sueishi
1Department of Orthodontics, Tokyo Dental College, Chiba, Japan. yokose@tdc.ac.jp
The Bulletin of Tokyo Dental College
|August 23, 2006
Summary
Supernumerary teeth, extra teeth, are rare, especially in the mandibular incisor area. This study reports two such cases, highlighting challenges in determining their cause and differentiating them from normal teeth.
Area of Science:
- Dentistry
- Oral and Maxillofacial Surgery
- Developmental Biology
Background:
- Dental anomalies, including supernumerary teeth, are observed in clinical practice.
- Existing theories (atavism, mechanical separation, tissue induction, dental laminar disturbance) do not fully explain supernumerary tooth occurrence.
- Supernumerary permanent teeth have an incidence of 1-3%, most commonly in the maxillary anterior region.
Observation:
- The incidence of supernumerary teeth in the mandibular anterior region is markedly low (approx. 0.01%).
- This paper presents two rare clinical cases of supernumerary teeth in the mandibular incisor area.
- Detailed reports on mandibular anterior supernumerary teeth are scarce.
Findings:
- Etiology of supernumerary teeth remains unclear, with no single theory providing a complete explanation.
- Differentiating between normal and supernumerary teeth can be challenging.
- Orthodontic treatment considerations for these rare cases are discussed.
Implications:
- Understanding the etiology of supernumerary teeth is crucial for accurate diagnosis and treatment planning.
- Further research is needed to elucidate the developmental pathways leading to supernumerary teeth.
- These case reports contribute to the limited literature on mandibular anterior supernumerary teeth, aiding clinical awareness.