PubMed · 513923
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E G McCollough, D S Mangat. 1979. Augmentation mentoplasty.. https://doi.org/10.1288/00005537-197912000-00015
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We mailed questionnaires to all patients who had had sagittal split osteotomies alone (n= 84) or in combination with genioplasty (n = 37) between 1995 and 2000, to find out the incidence of postoperative sensory disturbances. The patients with sagittal split osteotomies alone reported sensory disturbance in 48/131 (37%) operated sides. When combined with genioplasty patients experienced them in 20/54 (37%) operated sides. The incidences were 36/101 (36%) for mandibular advancement and 12/30 (40%) for mandibular setback. Out of the patients with sagittal split osteotomies alone, 59/66 (89%) were satisfied with the result of the operation, and when combined with the genioplasty the corresponding figure was 23/27 (85%). We conclude that differences in the incidence of sensory disturbance after sagittal split osteotomy for mandibular advancement and setback were not significant. The combination with genioplasty did not increase the incidence of sensory disturbance. Sensory changes after the osteotomies do not serve to be the main determinant of the patients' satisfaction.
STATEMENT OF PROBLEM: Measuring vertical dimension is a soft-tissue measurement. Therefore, inaccuracy may occur. PURPOSE: The purpose of this study is to compare the accuracy of the Willis gauge method with the caliper method. MATERIALS AND METHODS: The Willis gauge measures the distance between the septum of the nose and the chin. The caliper method measures the distance between reference points on the tip of the nose and the chin. Twenty predoctoral students applied both methods 10 times in measuring the rest vertical dimension (RVD) and the occlusal vertical dimension (OVD) of a single edentulous patient. The measurements obtained from one experienced clinician were selected as controls for the interocclusal distances (IOD) for the Willis and the caliper methods, respectively. One-sided t tests and a 1-sided nonparametric test were used to determine significant differences between the 2 methods (alpha=.05). RESULTS: The variances in the RVD values for the Willis gauge method were higher than for the caliper method for most students. A Wilcoxon signed rank test showed that the accuracy of the OVD measurements for the caliper method was significantly better than for the Willis gauge method (P=.001). This was not the case for the RVD measurements (P=.073). The average IOD for the Willis method was significantly higher than the control IOD (P=.026). The average IOD for the caliper method was not significantly larger than the control (P=.1303). CONCLUSION: This study showed that the use of the caliper method by predoctoral students was a significantly more reliable method of measuring the OVD for the patient evaluated.
Although ptosis of the tip of the chin is common and can be seen in persons of any age, it is frequently seen in older patients seeking facial rejuvenation. A variety of techniques have been described to correct ptosis of the chin. The authors describe a minimally invasive method that can be used correct chin ptosis. This technique uses a small intraoral incision to place a U-shaped Prolene suture that gathers the soft tissue of the chin and elevates it above the lower border of the mandibular symphysis. A retrospective review of 314 cases performed in conjunction with face lifts between January of 1994 and January of 2000 was performed to evaluate this technique. There were no significant complications, and long-term results have been very satisfactory and lasting.