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Cephalometric floating norms for North American adults
L Franchi1, T Baccetti, J A McNamara
1Department of Orthodontics, University of Florence, Italy. condax@tin.it
The Angle Orthodontist
|December 16, 1998
Summary
Floating norms offer a new method for analyzing craniofacial skeletal patterns in North American adults using cephalometric measurements. This approach aids in identifying individual variations for better diagnosis and treatment planning in orthognathic surgery.
Area of Science:
- Dentofacial Orthopedics
- Cephalometric Analysis
Background:
- Cephalometric analysis is crucial for diagnosing skeletal patterns.
- Existing norms may not accurately represent individual variations.
Purpose of the Study:
- Establish "floating norms" for individual craniofacial skeletal pattern description in North American adults.
- Provide a practical method for identifying harmonious features and deviations.
Main Methods:
- Utilized a regression model combining sagittal and vertical skeletal parameters.
- Analyzed correlations among specific cephalometric measurements: SNA, SNB, NL-NSL, ML-NSL, and NSBa.
Main Results:
- Developed a graphical, box-like representation of floating norms.
- Demonstrated the method's ability to identify individual skeletal patterns and deviations.
Conclusions:
- Cephalometric floating norms offer an easy and practical diagnostic tool.
- This method can enhance treatment planning for orthognathic surgery and dentofacial orthopedics.