1996•The Japanese Journal of Jaw DeformitiesOpen access

Clinical Application of SIS for Mandibular Prognathism. Part 1. Differential Diagnosis for Orthognathic Surgery.

Satoru Murata, K Miyajima, Tetsuo Kimura, K Nagahara

Abstract

The purpose of this study was to investigate clinical application of SIS for mandibular prognathism with SIS (Severity Indicator of Soft tissue profile) to make differential diagnosis for orthognathic surgery.The results were as follows:1. As for the relationship between the frequency of orthognathic surgery and SIS value, the frequency of orthognathic surgery increased when SIS value decreased.2. SIS was significantly more negative in the orthognathic surgery group (P<0.001) than in the nonsurgery group. A severer concave profile was shown in this group.From the above, it was possible to use SIS for numerical analysis of soft tissue profile and to make accurate differential diagnosis for orthognathic surgery.

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Key concepts: Orthognathic surgery, Mandibular prognathism, Medicine, Prognathism, Orthodontics, Soft tissue, Differential diagnosis, Dentistry