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Correlation between chronological age and skeletal maturity in different malocclusions: A retrospective study
Tabassum Qureshi1, Ritu Duggal1, Prabhat Kumar Chaudhari1
1All India Institute of Medical Sciences, Division of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research, 110029 New Delhi, India.
International Orthodontics
|July 24, 2021
Summary
The timing of the pubertal peak is similar across different skeletal jaw relations, but class III boys experience a longer pubertal spurt, with class II boys having the shortest duration. This research is crucial for dentofacial orthopaedics.
Area of Science:
- Dentofacial Orthopaedics
- Craniofacial Growth
- Orthodontics
Background:
- The pubertal peak is a critical period for mandibular growth in dentofacial orthopaedics.
- Understanding the timing and duration of this peak is essential for effective treatment planning.
Purpose of the Study:
- To compare chronological age with skeletal age across three skeletal jaw relations (Class I, II, and III).
- To analyze the duration of the pubertal peak in different malocclusion groups.
Main Methods:
- Utilized 787 cephalograms categorized into Class I, II, and III skeletal relationships.
- Assessed cervical vertebral stages (CVM) to determine skeletal age.
- Employed Dunn test for malocclusion group comparisons and 95% confidence intervals (CI) for pubertal peak duration.
Main Results:
- No significant difference in mean chronological age across malocclusion groups at CS2-CS5.
- Class III boys showed delayed pubertal spurt at CS4 (14.6 years) compared to girls (13.3 years).
- Pubertal peak duration varied: Class I (1.27 years), Class II (0.96 years), Class III (1.15 years); Class III boys had the longest duration (1.74 years).
Conclusions:
- A positive correlation exists between chronological age and CVM stages in all skeletal jaw relations.
- The average age of attaining the pubertal spurt is similar across Class I, II, and III.
- Class III girls mature slightly earlier, while Class III boys experience a later and longer pubertal peak duration.
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