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Skeletodental patterns in patients with multiple congenitally missing teeth.
Yocheved Ben-Bassat1, Ilana Brin
1Department of Orthodontics, Hebrew University-Hadassah School of Dental Medicine, PO Box 12272, Jerusalem 97720, Israel. avibb@netvision.net.il
Summary
Congenitally missing teeth (CMT) in multiple instances are linked to a distinct skeletodental pattern. This pattern, particularly evident with missing incisors, shows retruded jawbones and upright incisors compared to typical populations.
Area of Science:
- Dentistry
- Orthodontics
- Genetics
Background:
- Congenitally missing teeth (CMT) are common, but severe cases with multiple missing teeth can present unique skeletodental patterns.
- The specific characteristics of these skeletodental patterns in multiple CMT cases remain debated.
Purpose of the Study:
- To investigate and define the skeletodental patterns in patients with multiple congenital tooth agenesis.
- To compare these patterns against established cephalometric norms.
Main Methods:
- Analysis of lateral cephalograms from 115 individuals with at least 3 congenitally missing teeth across different groups.
- Comparison of cephalometric measurements with classical and Israeli population norms.
- Evaluation of differences based on the location (anterior vs. posterior) of missing teeth.
Main Results:
- Patients with multiple CMT exhibited retruded maxillary and mandibular basal bones with a normal intermaxillary relationship.
- A flatter facial profile compared to Israeli norms, but more convex than classical norms, was observed.
- Reduced Frankfort mandibular plane angle and upright incisors characterized the dental pattern, with anterior tooth absence exacerbating these features.
Conclusions:
- Multiple CMT cases are associated with a characteristic skeletodental pattern.
- This pattern is particularly pronounced in individuals with anteriorly missing teeth, highlighting the impact of tooth group absence.