Biomechanical Evaluation of Mandibular Condyle Fracture Osteosynthesis Using the Rhombic Three-Dimensional Condylar Fracture Plate

被引：11

作者：

Ben Achour, Anas ^{[1
]}

Meissner, Heike ^{[2
]}

Teichet, Uwe ^{[1
]}

Haim, Dominik ^{[3
]}

Range, Ursula ^{[4
]}

Brosius, Alexander ^{[1
]}

Leonhardt, Henry ^{[3
]}

Lauer, Gunter ^{[3
]}

机构：

[1] Tech Univ Dresden, Forming Proc, Inst Mfg Technol, George Bahr Str 3c, D-01069 Dresden, Germany

[2] Tech Univ Dresden, Dept Prosthet Dent, Univ Hosp Carl Gustav Carus, Dresden, Germany

[3] Tech Univ Dresden, Dept Oral & Maxillofacial Surg, Univ Hosp Carl Gustav Carus, Dresden, Germany

[4] Tech Univ Dresden, Inst Med Informat & Biometry, Univ Hosp Carl Gustav Carus, Dresden, Germany

来源：

JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY | 2019年 / 77卷 / 09期

关键词：

MASTICATORY SYSTEM; INTERNAL-FIXATION; CLOSED TREATMENT; BONE; BITE; STRENGTH; TRAUMA; MODEL; JOINT; PIG;

D O I：

10.1016/j.joms.2019.04.020

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Purpose: The aim of the present study was to evaluate the biomechanical stability of osteosynthesis in mandibular condyle fractures using a newly designed rhombic 3-dimensional (3D) condylar fracture plate and compare it with that using standard two 4-hole miniplates and with that in nonfractured condyles. Materials and Methods: Using 200 porcine mandibles, 3 different monocortical plating techniques were evaluated. The condyles were fractured along a defined line tangentially through the sigmoid notch and perpendicular to the posterior border. After anatomic reduction, osteosynthesis was performed using either standard rhombic 3D condylar fracture plates and standard screws (group A) or locking rhombic 3D condylar fracture plates, which were fixed either with standard screws (group B) or locking screws (group C). For comparison, nonfractured condyles (group D) and condyles fixed with standard two 4-hole miniplates and 8 screws (group E) were included. Using a universal mechanical testing machine (TIRA Test 2720; TIRA GmbH Schalkau, Germany), each group was subjected to linear loading from laterally to medially, medially to laterally, anteriorly to posteriorly, and posteriorly to anteriorly. The maximum axial force and displacement at the maximum force were measured. The mean values were compared for statistical significance using analysis of variance with Bonferroni's correction (statistical significance set at P < .05). Results: The main mode of failure in the plating techniques investigated was the pull out of screws from the proximal fragment. We found no statistically significant differences in the stability of osteosynthesis between the two 4-hole miniplates and the rhombic 3D condylar fracture plate when loading from posteriorly to anteriorly, laterally to medially, and medially to laterally. However, when loading from anteriorly to posteriorly, a statistically significant difference between the standard and locking system and the two 4hole miniplate system was observed, with the latter proving more stable. Conclusions: The results of the present biomechanical study suggest that the rhombic 3D condylar frac- ture plates are suitable for the treatment of condylar neck fractures. Both types of the plate are able to resist physiologic strains comparable to the two 4-hole miniplates. (C) 2019 American Association of Oral and Maxillofacial Surgeons

引用

页码：1868.e1 / 1868.e15

页数：15

共 37 条

[11] Use of a 2.0-mm locking plate/screw system for mandibular fracture surgery [J].