Comparison of stability of resorbable and titanium fixation systems by finite element analysis after maxillary advancement surgery
Journal of Craniofacial Surgery, cilt.20, sa.3, ss.775-779, 2009 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 20 Sayı: 3
- Basım Tarihi: 2009
- Doi Numarası: 10.1097/scs.0b013e3181a2d871
- Dergi Adı: Journal of Craniofacial Surgery
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.775-779
- Anahtar Kelimeler: Le Fort I, advancement, stability, rigid fixation
- İstanbul Medipol Üniversitesi Adresli: Hayır
Özet
In this study, three-dimensional modeling and finite element analysis were used to evaluate and compare the stability of Le Fort I osteotomy fixed with titanium and resorbable fixation systems under molar and incisor bite forces. A three-dimensional model of 5-mm advanced hemimaxilla was generated. Contact analyses between the upper and lower segments were prescribed. Two L-plates were inserted on this model via simulation. Displacement, principal stresses, and principal elastic strains were evaluated under 44-N, 125-N incisor and, 250-N molar bite forces. These results suggest that Le Fort I osteotomies fixed with titanium miniplates and screws were stable under all tested forces. However, in resorbable group, under incisor bite forces greater than 44 N, there is a great risk of plate fracture, screw deformation, and/or failure. © 2009 Lippincott Williams & Wilkins, Inc.