Patients were tested before and after undergoing surgical premaxillary osteotomy for correction of skeletal and soft-tissue discrepancies. Both structural and speech measurements were made before surgery and for a year after surgery. The role of hearing and oral sensation in adaptation to surgery was evaluated. Immediately after surgery, speech was disrupted. Distortions of |s| predominated. However, there were no long-term effects on speech. Hearing and oral sensation played little role in adaptation.
Bibliographical noteFunding Information:
This research was supported by National Institute of Dental Research 05002-01 and by grants awarded to the Center for Research in Human *Department of Speech and Theatre Arts, University of Pittsburgh. **University of Minnesota School of Dentistry.
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