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Abstract
Aim: Facial orthopaedic treatments based on the stimulation or restrictions of craniofacial bone growth are more effective when carried out during the pubertal growth spurt. The aim of this cross-sectional study was to evaluate the reproducibility of two cervical vertebrae methods (CVM) with manual tracing and direct visual inspection. Methods: A sample of 60 lateral cephalometric radiographs (10 of each of the 6 CVM stages) was randomly selected from 171 records. 5 orthodontists classified these radiographs according to the skeletal maturation stage in 2002 and 2005, and the application of both methods was conducted by direct visual inspection and evaluation through manual tracing. Results: The average reliability of the two methods determination and the two forms of evaluation was substantial. The direct visual inspection evaluation showed the highest reliability and agreement interexaminer values for both methods, as well as the intraexaminers evaluation. Conclusion: The reproducibility of CVM method was substantial, indicating its clinical use to determine the skeletal maturity and the ideal moment for treatment execution.
Highlights
Facial orthopaedic treatments based on the stimulation and/or restriction of craniofacial bone growth are more effective when carried out during the pubertal growth spurt, as during this period, the facial bone structures perform at maximum capacity in response to stimuli offered by applied mechanics[1,2]
A sample of 60 lateral cephalometric radiographs (10 of each of the 6 cervical vertebrae methods (CVM) stages) was randomly selected from 171 records. 5 orthodontists classified these radiographs according to the skeletal maturation stage in 2002 and 2005, and the application of both methods was conducted by direct visual inspection and evaluation through manual tracing
The application of the analysis of the cervical vertebrae maturation (CVM) as a method to determine the skeletal development stage must be conditioned to its accuracy and reproducibility, allowing identification of the period where the craniofacial bones respond more effectively to facial orthopaedic treatments[1,2]
Summary
Facial orthopaedic treatments based on the stimulation and/or restriction of craniofacial bone growth are more effective when carried out during the pubertal growth spurt, as during this period, the facial bone structures perform at maximum capacity in response to stimuli offered by applied mechanics[1,2]. The degree of skeletal maturation of craniofacial bones can be determined by the hand-wrist x-ray or by the evaluation of the cervical vertebrae maturation[6,7,8]. The hand-wrist x-ray evaluation is considered the gold standard method, since it allows the evaluation in a small area of the development of a great number of ossification centres, that present close relation with the whole skeletal bone development[6]. In 200513, the same authors presented an improved version of the method to evaluate CVM with six stages of MVC, which allowed the physician to identify the ideal moment for dental skeletal disharmony treatment
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