For each case, it is necessary to set a PIP as a treatment goal which will result in the upper incisors having correct A/P and vertical positioning, with appropriate torque. Each orthodontist will have a view about what the exact goals for the upper incisor position should be for a particular case, although there is likely to be broad consensus about the approximate treatment needs. It is beyond the scope of this text to discuss and define those goals in detail. However, general comments will be made, based on conventional cephalometric values and also on the Arnett analysis.2-4
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