Abstract It is our purpose to describe the bony clinical and radiologic findings in cases of masseteric hypertrophy and to report a new entity associated with it—external hyperostosis of the angle of the mandible. The clinical material upon which this study is based consists of 28 cases which were subjected to a multidisciplinary study at Winter Veterans Hospital and other psychiatric institutions in Topeka, Kan., by Guggenheim and Cohen and associates.1 The observations of these workers accord with the opinion of Gurney,7 shared by Kern,13 that the masseteric enlargement is a work hypertrophy caused by the habit of jaw clenching. It has been found that the presence of this condition indicates a severe underlying emotional disturbance. A central problem of the patients concerned has to do with disposal of excess quantities of oral-aggressive energy. As pointed out by Boldt,4 Barton,14 and others, patients with this condition References 1. Guggenheim, P., and Cohen, L. B.: The Pathogenesis of Masseteric Hypertrophy, to be published. 2. Legg, J. W.: Enlargement of the Temporal and Masseter Muscles on Both Sides , Tr. Path. Soc. London 31:361-66, 1880. 3. Duroux, M.: Hypertrophie musculaire bilaterale des masséters , Lyon méd. 104:1355, 1905. 4. Boldt, H.: Ein Beitrag zur Kenntnis der einfachen Masseter-Hypertrophie mit einigen Fallen, Berlin Thesis No. 31, 1930. 5. Coffey, R. J.: Unilateral Hypertrophy of the Masseter Muscle , Surgery 11:815-818 ( (May) ) 1942. 6. Hersh, J. H.: Hypertrophy of the Masseter Muscle , Arch. Otolaryng. 43:593-596 ( (June) ) 1946.Crossref 7. Gurney, C. E.: Chronic Bilateral Benign Hypertrophy of the Masseter Muscles , Am. J. Surg. 73:137-139 ( (Jan.) ) 1947.Crossref 8. Adams, W. M.: Bilateral Hypertrophy of the Masseter Muscle: An Operation for Correction , Brit. J. Plast. Surg. 2:78-82 ( (July) ) 1949. 9. Maxwell, J. H., and Waggoner, R. W.: Hypertrophy of the Masseter Muscles , Ann. Otol. Rhin. & Laryng. 60:538-548 ( (July) ) 1951. 10. Tempest, M. N.: Simple Unilateral Hypertrophy of the Masseter Muscle , Brit. J. Plast. Surg. 4:136-138 ( (July) ) 1951. 11. Soderberg, B. N., and Switzer, W. E.: Bilateral Hypertrophy of the Masseter Muscles , U. S. Armed Forces M. J. 5:393-396 ( (March) ) 1954. 12. Drummond, J. A., and McIntosh, G. A.: A Symposium on Maxillofacial Surgery: Unilateral Hypertrophy of Masseter Muscles , Am. J. Surg. 87:711-714 ( (May) ) 1954. 13. Kern, A. B.: Masseter Muscle Hypertrophy , A. M. A. Arch. Dermat. 69:558-562 ( (May) ) 1954. 14. Barton, R. T.: Benign Masseteric Hypertrophy: A Syndrome of Importance in the Differential Diagnosis of Parotoid Tumors , J. A. M. A. 164:1646-1647 ( (Aug. 10) ) 1957. 15. Hrdlićka, A.: Mandibular and Maxillary Hyperostoses , Am. J. Phys. Anthropol. 27:1-67 ( (June 29) ) 1940. 16. Duckworth, W. L. H., and Pain, B. H.: A Contribution to Eskimo Craniology , J. Roy. Anthrop. Inst. 30:134, 1900. 17. Hrdlićka, A.: Contribution to the Anthropology of Central and Smith Sound Eskimo , Anthrop. Papers Am. Mus. Natur. Hist. 5:177-280, 1910. 18. Hrdlićka, A.: Mandibular Hyperostoses, in Anthropological Survey in Alaska, 46th Annual Report of the Bureau of American Ethnology, 1930, pp. 306-313. 19. Weidenreich, F.: The Mandibles of Sinanthropus Pekinensis: A Comparative Study , Palaeontol. sinica (Ser. D) 7:52 and 116, 1936. 20. Drennan, M.: The Torus Mandibularis in the Bushman , J. Anat. 70:66, 1937.
A.M.A. Archives of Otolaryngology – American Medical Association
Published: Dec 1, 1959