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Titre du document / Document title

Bite forces before and after surgical correction of mandibular prognathism

Auteur(s) / Author(s)

ELLIS E. III (1) ; THROCKMORTON G. S. ; SINN D. P. ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Univ. Texas Southerwestern medical cent., div. oral maxillofacial surgery, Dallas TX 75235-9109, ETATS-UNIS

Résumé / Abstract

Purpose : The purpose of this investigation was 1) to compare morphologic parameters and voluntary bite forces between controls and a sample of patients with mandibular prognathism before surgical correction, and 2) to examine how these patients' bite forces adapt after treatment. Patients and Methods : Twenty-four prognathic patients were compared with 24 controls before and up to 3 years after mandibular setback surgery. Measures of skeletal morphology and maximum isometric bite force were made on all subjects over time. Statistical analysis compared the controls, the patients before surgery, and the patients after surgery. Results : Surgical shortening of the mandible averaged 4.1 mm, bringing most skeletal measures into the normal range. Before surgery, the jaw muscle mechanical advantages for patients were significantly smaller than for controls ; surgery did not significantly change this relationship. Before surgery the patients had maximum isometric bite forces that were significantly less than those of controls. Bite forces steadily increased after surgery, approaching normal values within 2 to 3 years. Conclusions : The results of this study suggest that correction of mandibular prognathism by mandibular setback surgery produces some significant functional benefits.

Revue / Journal Title

Journal of oral and maxillofacial surgery    ISSN  0278-2391   CODEN JOMSDA 

Source / Source

1996, vol. 54, no2, pp. 176-181 (17 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, New York, NY, ETATS-UNIS  (1982) (Revue)

Mots-clés anglais / English Keywords

Prognathism

;

Mandible

;

Treatment

;

Surgery

;

Result

;

Dysfunction

;

Force

;

Occlusion

;

Postoperative

;

Preoperative

;

Malformation

;

Stomatology

;

Mots-clés français / French Keywords

Prognathisme

;

Mandibule

;

Traitement

;

Chirurgie

;

Résultat

;

Trouble fonctionnel

;

Force

;

Occlusion

;

Postopératoire

;

Préopératoire

;

Malformation

;

Stomatologie

;

Mots-clés espagnols / Spanish Keywords

Prognatismo

;

Mandíbula

;

Tratamiento

;

Cirugía

;

Resultado

;

Trastorno funcional

;

Fuerza

;

Oclusión

;

Postoperatorio

;

Preoperatorio

;

Malformación

;

Estomatología

;

Localisation / Location

INIST-CNRS, Cote INIST : 3005, 35400005284741.0070

Nº notice refdoc (ud4) : 2991564



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