Single Miniplate Research Articles

Treatment methods for fractures of the mandibular angle

Fractures of the mandibular angle are plagued with the highest rate of complication of all mandibular fractures. Over the past 10 years, various forms of treatment for these fractures were performed on an indigent inner city population. Treatment included: 1) closed reduction or intraoral open reduction and non-rigid fixation; 2) extraoral open reduction and internal fixation with an AO/ASIF reconstruction bone plate; 3) intraoral open reduction and internal fixation using a solitary lag screw; 4) intraoral open reduction and internal fixation using two 2.0 mm mini-dynamic compression plates; 5) intraoral open reduction and internal fixation using two 2.4 mm mandibular dynamic compression plates; 6) intraoral open reduction and internal fixation using two non-compression miniplates; 7) intraoral open reduction and internal fixation using a single non-compression miniplate; and 8) intraoral open reduction and internal fixation using a single malleable non-compression miniplate. This paper reviews the results of those modes of treatment when used for the same patient population at one hospital. Results of treatment show that, in this patient population, the use of either an extraoral open reduction and internal fixation with the AO/ASIF reconstruction plate or intraoral open reduction and internal fixation, using a single miniplate, are associated with the fewest complications.

Treatment methods for fractures of the mandibular angle

Fractures of the mandibular angle are plagued with the highest rate of complication of all mandibular fractures. Over the past 10 years, various forms of treatment for these fractures were performed on an indigent inner city population. Treatment included: 1) closed reduction or intraoral open reduction and non-rigid fixation; 2) extraoral open reduction and internal fixation with an AO/ASIF reconstruction bone plate; 3) intraoral open reduction and internal fixation using a solitary lag screw; 4) intraoral open reduction and internal fixation using two 2.0 mm mini-dynamic compression plates; 5) intraoral open reduction and internal fixation using two 2.4 mm mandibular dynamic compression plates; 6) intraoral open reduction and internal fixation using two non-compression miniplates; 7) intraoral open reduction and internal fixation using a single non-compression miniplate; and 8) intraoral open reduction and internal fixation using a single malleable non-compression miniplate. This paper reviews the results of those modes of treatment when used for the same patient population at one hospital. Results of treatment show that, in this patient population, the use of either an extraoral open reduction and internal fixation with the AO/ASIF reconstruction plate or intraoral open reduction and internal fixation, using a single miniplate, are associated with the fewest complications.

Treatment of mandibular angle fractures using one noncompression miniplate

Purpose: This study evaluated the results in patients treated for fractures of the mandibular angle with a single miniplate. Patients and Methods: Eighty-one patients with fractures of the mandibular angle were treated by open reduction and internal fixation using one noncompression miniplate with 2.0-mm self-threading screws placed through a transoral incision. No patient was placed into postsurgical maxillomandibular fixation. They were prospectively studied for complications. Results: Thirteen patients with angle fractures (16%) experienced complications requiring secondary surgical intervention. Most of the complications (n = 11), however, were minor and could be treated in the office. Most commonly, intraoral incision and drainage and later removal of the bone plate were required. All patients with minor complications had clinical union. Only two complications required hospitalization for intravenous antibiotics and further surgery. One of these patients had a fibrous union requiring a bone graft. Conclusions: The use of a single miniplate for fractures of the angle of the mandible is a simple, reliable technique with a relatively small number of major complications.

チタン製ミニプレートによる骨接合の構造力学的評価

This paper describes a method for determining the displacement of bone segments under application of a static load to evaluate the stability of the fractured mandible fixed with titanium miniplates.1.In single miniplate fixation of linear-shaped acrylic resin models, fixation with a4-hole lona miniplate at either the upper or lower 1/3 area gave better resistance to displacement than fixation with a 4-hole regular miniplate.2.In single miniplate fixation of linear-shaped acrylic resin models, fixation with a 4-hole regular miniplate at either the upper or lower 1/3 area had no affect on the displacement.3.In single miniplate fixation of linear-shaped acrylic resin models, fixation with a 4-hole long miniplate at either the upper or lower 1/3 area also had no affect on the displacement.4.Fixation with two miniplates yielded more resistance to displacement than fixation with one miniplate in both the linear-shaped and U-shaped acrylic resin models.5.In simulatory osteosynthesis in the body region with one miniplate, the largest displacement was recorded by fixation at the upper 1/3 area with a 4-hole regular miniplate. However, large displacement was recorded by the other modes of single miniplate fixation.6.In simulatory osteosynthesis at the median region with one miniplate, the displacement was smallest by fixation at the lower 1/3 area with a 4-hole regular miniplate.However, large displacement was recorded by the other modes of single miniplate fixation.7.In simulatory osteosynthesis with two miniplates at either the body or the median region, the displacement was small and showed no difference by any mode of fixation.The displacement was smallest especially by fixation with two 4-hole regular miniplates.8.In simulatory osteosynthesis at either the body or the median region, fixation with two miniplates resulted in smaller displacement, compared to fixation with one miniplate.