Maxillary Fragment Stabilization After Le Fort I Fracture With 1 Screw Pair per Plate

Knežević, Predrag and Grgurević, Lovro and Ugleśić, Vedran and Grgurević, Jaka and Drvar, Nenad and Kodvanj, Janoš (2011) Maxillary Fragment Stabilization After Le Fort I Fracture With 1 Screw Pair per Plate. = Maxillary Fragment Stabilization After Le Fort I Fracture With 1 Screw Pair per Plate. Journal of Oral and Maxillofacial Surgery, 69 (4). pp. 1166-1174. ISSN 0278-2391. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q2 (2011). Točan broj autora: 6.

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Purpose: The aim of the present study was to determine whether plates with only 1 screw pair can be used for Le Fort I fracture management. Good postoperative results motivated the direct application of mandible fixation principles to the fractured midface region without additional experimental research. However, the amount and distribution of the forces in the midface region is different from those on the mandible. Materials and Methods: Testing was conducted on plastic anatomic models. The validity of the experimental model was tested before the fixation techniques were compared. Standard miniplates and miniscrews were used for fixation of the maxilla. The model surface strain analysis was conducted using the noncontact object grating method, which enabled the surface strain measurement without direct influence on the measured model. Results: In 2 screw pair fixation, the outer screw pair has little effect on the local strain distribution, but it lowers the contact forces along the crack. One screw pair fixation is stable enough for fixation, but it has a greater strain peak at the crack edges. Conclusion: Our results showed that 1 screw pair per plate was enough for stable fixation, and 2 or more screw pairs should only be used when the bone fragment at the fracture site cannot sufficiently transmit forces along the crack. © 2011 American Association of Oral and Maxillofacial Surgeons.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): article; bone screw; computer model; controlled study; face; fracture fixation; maxilla fracture; maxilla osteotomy; plate fixation; postoperative care; Alveolar Process; Biomechanics; Bone Plates; Bone Screws; Fracture Fixation; Internal; Humans; Image Processing; Computer-Assisted; Imaging; Three-Dimensional; Maxilla; Maxillary Fractures; Models; Anatomic; Nasal Bone; Photography; Plastics; Stress; Mechanical; Zygoma
Divisions: 200 Department of Engineering Mechanics
200 Department of Engineering Mechanics > 220 Chair of Experimental Mechanics
Indexed in Web of Science: Yes
Indexed in Current Contents: Yes
Quartiles: Q2 (2011)
Date Deposited: 21 Apr 2015 12:51
Last Modified: 17 Nov 2016 13:03

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