Effects of hypesthesia on oral behaviors of the orthognathic surgery patient

Robert R. Lemke, Gary M. Clark, Robert A. Bays, B. D. Tiner, John D. Rugh

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


Purpose: The purpose of this study was to compare orthognathic surgery patients with and without significant hypesthesia with respect to perceived problems with specific oral behaviors. Patients and Methods: Data from 116 patients 6 months after bilateral sagittal split osteotomy (BSSO) and mandibular advancement were analyzed. Tactile sensation in the right and left mental nerve areas was determined using monofilaments and brush strokes (von Frey hairs). The right infraorbital region was used as a control. A difference of 450 mg of force between the control and test sites was considered significant hypesthesia. Patients rated their level of subjective problems with swallowing liquids or solids, smiling, spitting, kissing, speaking, eating, and drooling on a scale from 1 (none to mild) to 7 (extreme). A value of 5 or greater was considered significant impairment. Results: Hypesthesia was shown in 23 patients (19.8%) with the monofilaments and in 29 patients (25.0%) using brush stroke direction. In each of these two groups, a significant correlation was observed between hypesthesia and difficulty in chewing and kissing. No correlation was observed between any of the remaining seven oral behaviors and hypesthesia. Conclusion: These findings suggest that only certain oral behaviors are affected by hypesthesia of the mental nerve.

Original languageEnglish (US)
Pages (from-to)153-157
Number of pages5
JournalJournal of Oral and Maxillofacial Surgery
Issue number2
StatePublished - Feb 1998

ASJC Scopus subject areas

  • Oral Surgery
  • Surgery
  • Otorhinolaryngology


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