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Original Article

The control of vertical dimension in bi-dimensional technique

2012, Volumen 42, Número 4
B. Giuliano Maino, Paolo Pagin
Especialista en ortodoncia. Universidad de Parma. Parma, Italia
 

The relationship between the sagittal and the vertical dimensions is a critical element in the diagnosis and in orthodontic treatment planning decisions. Indeed, our therapeutic decisions do not depend exclusively on the relationship between class and/or crowding, but also depend on the degree of divergence. For example, in hypodivergent and normodivergent patients with no crowding or only moderate crowding, the tendency is for treatment without extractions, while on the other hand, in hyperdivergent, Class II patients, who tend to have an open bite, the therapeutic option generally leans toward extractions. Facial pattern and growth trend also determine the direction of the extraoral and intraoral forces used in the orthodontic treatment. Skeletal anchors such as mini implants have opened new opportunities as they allow altering vertical dimensions in a way that is substantially superior to conventional treatment. They allow more precise application of biomechanics and more predictable control over the anchors, reducing dependence on patient cooperation and expanding the limits of orthodontic treatment.  (Rev Esp Ortod. 2012;42(4):252-262)

 
 
Key words:
Bi-dimensional technique. Vertical dimension. Divergence. Class II. Extractions. Headgear. Temporary anchorage devices (TAD).
 
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