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Characterization of maxillary central incisor: novel crown-root relationships
Jerónimo P Lazos1, Luis F Senn, Mabel N Brunotto
1Cátedra de Clínica Estomatológica, Oral Pathology Department, Facultad de Odontología, Universidad Nacional de Córdoba, Av. Haya de la Torre s/n, Ciudad Universitaria, 5000, Córdoba, Argentina, jerolazos@gmail.com.
Clinical Oral Investigations
|December 10, 2013
Summary
Crown and root measurements of the maxillary central incisor show a strong correlation. This allows for accurate prediction of root dimensions using crown features, improving periodontal biotype assessment.
Area of Science:
- Dental Morphology
- Periodontal Biotype Analysis
- Tooth Measurement
Background:
- The periodontal biotype is often characterized by maxillary central incisor (MCI) crown features.
- Root dimensions of MCIs have been less extensively studied.
- Understanding MCI morphology is crucial for comprehensive periodontal biotype assessment.
Purpose of the Study:
- To morphologically characterize the maxillary central incisor (MCI).
- To investigate the relationships between MCI crown and root measurements.
- To establish predictive models for root dimensions based on crown morphology.
Main Methods:
- Morphometric analysis of 150 maxillary central incisors (MCIs).
- Measurements included crown (mesio-distal, axial, buccolingual diameters) and root (mesio-distal, buccolingual diameters) dimensions.
- Linear regression analyses were employed to predict root diameters from crown measurements.
Main Results:
- MCIs were categorized into Stout (56.67%), Intermediate (22.67%), and Strangled (20.67%) types based on crown dimensions.
- Significant associations were found between root buccolingual diameter (Rbl) and crown buccolingual diameter (Cbl).
- Significant associations were also observed between root mesio-distal diameter (Rmd) and both minor (md) and major (MD) crown mesio-distal diameters.
Conclusions:
- A direct and accurate relationship (95% accuracy) exists between MCI crown and root morphometric features.
- Root diameters can be reliably predicted using crown measurements, irrespective of tooth form.
- These findings enhance the understanding of the periodontal biotype and can improve dental treatment planning.
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