A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . CHAPTER XXI. DIAGNOSIS AND TREATMENT 197 with the chin in normal dento-facial relation. Therefore, if the upper lip is notprotruded, as in Type A, Division 1, the lower denture must be retruded in relationto a normally posed chin and the rest of the facial framework, to the full extent Fig.

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