A study on the planted conditions of molars in the overbite patients--with reference to 45 degrees oblique cephalographic analysis.
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Orthodontic cases, presenting a deep-bite skeletal pattern, show a number of structural and alveolodental features. In order to reveal the areas of imbalance, a study based on the principles of Biggerstaaf's cephalometric analysis was performed: this analysis allows a more precise approach than the classical angular analysis, showing up the proportions of each patient and their variations. Consequently, it remains possible to assert a treatment strategy.
Class II mechanics are supposed to affect the vertical balance of the face when they are used in hyperdivergent patterns. We carried out a study about class II mechanics effects on 100 patients; 50 of them are hyperdivergent (GoGn/SN > or = 37), and 50 non-hyperdivergent. They all were treated with an Edgewise appliance without any high pull head gear. The authors showed that GoGn/SN angles and Occ/SN tend to be lessened in a skeletal open-bite population. Thus, Class II mechanics can be prescribed in any vertical facial pattern.