A Comparative Assessment Between Hand-Wrist Maturation, Cervical Vertebral Maturation, and Chronological Age Using the American Association of Orthodontists Foundation Craniofacial Growth Legacy Collection.

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Introduction: The objective of this study is to find the level of agreement and correlation of pre- and post-peak growth spurts (PGS) between the cervical vertebral maturation (CVM) and hand-wrist maturation (HWM) along with the chronological age, in the Craniofacial Growth Legacy Collection gathered by The American Association of Orthodontists Foundation (AAOF). Methods: 44 subjects were selected in the age range of 8-18 years to assess both CVM and HWM using Baccetti et al and Fishman skeletal maturation indices respectively to determine the chronological ages immediately before as well as immediately after PGS (Pre-PGS vs. Post-PGS). Results: At pre-PGS, the age among males was significantly lower by 1.2 years for CVM compared to that for the HWM (p-value = 0.001), while among females no significant difference was found between CVM and HWM. At post-PGS, the age among females was significantly higher by 0.8 year for CVM compared to that for HWM (p-value = 0.01), while among males no significant difference was found between CVM and HWM. The distributions of age at the pre-PGS and post-PGS of CVM are highly dispersed compared to that of HWM within both genders. The PGS duration in the CVM was found to be significantly longer compared to HWM by half a year. Conclusion: Gender was found to be a significant factor associated with the age at pre- and post-PGS. The practitioner should be aware of the variations of growth and growth assessments, as using the HWM skeletal assessment is recommended.
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