Kozakiewicz Marcin, Gabryelczak Izabela, Bielecki-Kowalski Bartosz
Department of Maxillofacial Surgery, Medical University of Lodz, 113 Żeromskiego Str., 90-549 Lodz, Poland.
Materials (Basel). 2022 Jan 18;15(3):711. doi: 10.3390/ma15030711.
Titanium alloys are used in skeletal surgery. However, once bone union is complete, such fixation material becomes unnecessary or even harmful. Resorbable magnesium materials have been available for several years (WE43 alloy). The aim of this study was to clinically compare magnesium versus titanium open reduction and rigid fixations in mandible condylar heads. Ten patients were treated for fractures of the mandibular head with magnesium headless compression screws (2.3 mm in diameter), and 11 patients were included as a reference group with titanium screws (1.8 mm in diameter) with similar construction. The fixation characteristics (delay, time, and number of screws), distant anatomical results (mandibular ramus height loss, monthly loss rate, and relative loss of reconstructed ramus height), basic functional data (mandibular movements, facial nerve function, and cutaneous perception) and the influence of the effects of the injury (fracture type, fragmentation, occlusion, additional fractures, and associated diseases) on the outcome were evaluated. The long-term results of treatment were evaluated after 18 months. Treatment results similar to those of traditional titanium fixation were found with magnesium screws. Conclusions: Resorbable metal screws can be a favored option for osteosynthesis because surgical reentry can be avoided. These materials provide proper and stable treatment results.
钛合金用于骨骼手术。然而，一旦骨愈合完成，这种固定材料就变得不必要甚至有害。可吸收镁材料（如WE43合金）已经问世数年。本研究的目的是在临床上比较镁合金与钛合金在下颌髁头切开复位坚强内固定中的应用。10例患者用镁制无头加压螺钉（直径2.3mm）治疗下颌头骨折，11例患者作为参照组，使用构造相似的钛螺钉（直径1.8mm）。评估固定特征（延迟、时间和螺钉数量）、远处解剖学结果（下颌升支高度丢失、每月丢失率和重建升支高度的相对丢失）、基本功能数据（下颌运动、面神经功能和皮肤感觉）以及损伤影响（骨折类型、碎骨片、咬合、额外骨折和相关疾病）对结果的影响。18个月后评估治疗的长期结果。发现镁螺钉的治疗结果与传统钛固定相似。结论：可吸收金属螺钉可成为骨合成的首选方案，因为可避免二次手术。这些材料能提供恰当且稳定的治疗结果。
