Experimentelle Untersuchung zur biomechanischen Stabilität unterschiedlicher Unterkieferosteosynthesen

Piffkò, József; Homann, C; Schuon, Robert; Joos, Ulrich; Meyer, Ulrich

doi:10.1007/s10006-002-0429-9

Cited by 11 publications

(3 citation statements)

References 26 publications

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“…Although experimental studies on biomechanics have confirmed sufficient stability of the 3D plating system,[ 21 22 ] only a few clinical studies are reported in literature. [ 18 20 23 24 ] The use of 3D miniplates in mandibular fracture fixation has not yet become established.…”

Section: Discussionmentioning

confidence: 99%

Three-dimensional locking plate and conventional miniplates in the treatment of mandibular anterior fractures

Budhraja

Shenoi

Badjate

et al. 2018

Ann Maxillofac Surg

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Context:Three-dimensional (3D) locking plates has been designed with the hypothesis that this will overcome the disadvantages of both the systems and also advantages of both systems will be combined for the management of mandibular fractures.Aims:The purpose of this study was to evaluate the efficacy of 2-mm 3D locking miniplate in the management of anterior mandibular fracture and to compare it with Champy's miniplate.Settings and Design:A prospective, randomized, clinical trial was carried out in thirty patients who were divided equally in two groups.Subjects and Methods:Group I and Group II patients were treated with 2-mm 3D locking plates and 2-mm standard miniplates, respectively. They were evaluated according to the outcomes of the study, that is, working time, wound dehiscence, infection, segmental mobility, postoperative occlusion, need for postoperative intermaxillary fixation (IMF), and radiological evaluation of reduction and fixation.Statistical Analysis Used:Student's t-test and Mann–Whitney test were used to compare the two systems. The data were analyzed using Statistical Package for the Social Science version 14.0. The P value was taken as significant when <0.05 (confidence interval of 95% was taken).Results:The mean duration of procedure for Group I was found to be 49.33 min, whereas for Group II was 59.67 min. There was significantly greater pain on day 1 and at 1 week in Group II patients. 6.7% (n = 1) of both groups showed incidence of infection. Postoperative stability was adequate in most cases except in one patient (n = 1) of 3D locking system, which was revealed as postoperative occlusal disharmony, unsatisfactory radiological reduction of the fracture fragments, and the segmental mobility. There was no incidence of wound dehiscence, tooth damage, and nerve damage in either group.Conclusions:The result of the study can conclude that there is no major difference between both systems in terms of treatment outcome.

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Section: Discussionmentioning

confidence: 99%

Three-dimensional locking plate and conventional miniplates in the treatment of mandibular anterior fractures

Budhraja

Shenoi

Badjate

et al. 2018

Ann Maxillofac Surg

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“…Several studies used three screws for xation; however, more than three screws were used in the distal and proximal stumps in our study. [11] , [12] , [13] Signi cant stresses occurred at the screw attachment-bone interfaces during chewing, and screw loosening may develop as a long-term complication after mandible reconstruction with plates. [14] , [15] ,…”

Section: Discussionmentioning

confidence: 99%

Finite element analysis of low-profile reconstruction plates for atrophic mandibles: a comparison of novel 3D grid and conventional plate designs

Guerra,

de Fátima Borim Pulino,

Salomão Júnior

et al. 2023

Oral Maxillofac Surg

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This study aimed to compare the reconstruction with type 2.4 and three-dimensional (3D) grid plates relating the areas of weakness to anatomical regions of force incidence in atrophic mandibles with and without segmentation using nite element analysis (FEA). Strength and force quality in the mandible were also determined. The atrophic mandible models with and without segmentation were divided into four groups, and the behavior of each plate was analyzed using nite element analysis. In the atrophic mandible without segmentation using the type 2.4 reconstruction plate, the highest stress concentration in the plate was observed in the posterior region of the mandibular body and in the grid type 3D reconstruction plate was observed in the mandibular angle. In the segmented atrophic mandible with the 2.4 reconstruction plate, higher stress concentration was observed in the mandibular segment defect.Analysis of the 3D grid-like reconstruction plate revealed that the geometry of the plate conferred greater stiffness to the assembly, as the most signi cant stress concentration was observed at the mandibular angle. The width of the plate design may in uence the strength, not the thickness.

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“…This potentially implies that, compared to reconstruction and compression plates, a thinner design or reduction in plate cross-section with fewer number of screws per fracture side may be established, even by using monocortical fixation [15]. According to some authors, this may need to be compensated by a higher plate thickness or different plate geometry to achieve sufficient immobilization [16][17][18][19][20]. However, there is still no consensus on the indication and predictability of outcomes with regards to the use of three-dimensional plates for mandibular angle fractures.…”

Section: Introductionmentioning

confidence: 99%

Clinical results of two different three-dimensional plate types for the treatment of mandibular angle fractures: a retrospective analysis

Pfister,

Shazwani,

Müller

et al. 2024

Oral Maxillofac Surg

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Objectives The purpose of this study was to compare two different designs of three-dimensional osteosynthesis plates for their suitability in the treatment of mandibular angle fractures in terms of sufficient fracture healing and concomitant complications. Materials and methods Retrospectively a total of 54 patients with 56 mandibular angle fractures were evaluated. Two different types of three-dimensional plates from the Medartis Trilock system were analyzed: (A) Square design plate (☐-plate) with a thickness of 1.0 mm, and (B) triangular-shaped 3D-plate (△-plate) with a thickness of 1.3 mm. Patient demographics, fracture mechanism and intraoperative details were recorded during an average follow-up period of 1 year. Results The utilization of △-plates was observed to entail a considerably lengthier surgical time in contrast to ☐-plate systems (P = 0.037). The application of △-plate showed a tendency of higher incidence of major complications than ☐-plate (P = 0.06), as evidenced by the occurrence of non-union in 2 out of 22 cases, resulting in higher surgical revision rate for △-plate (P = 0.027). Conclusion Sufficient treatment of mandibular angle fractures is feasible by using 1.0 mm thick, square shaped three-dimensional plate systems. The use of thicker three-dimensional osteosynthesis plates seems to significantly increase the operating time and complication rates, whereby the geometry of the plate seems to have an influence. Clinical relevance The plate design could have an impact on treatment outcomes of mandibular angle fractures. Trial registration number Not applicable.

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Experimentelle Untersuchung zur biomechanischen Stabilität unterschiedlicher Unterkieferosteosynthesen

Abstract: Our fracture and osteosynthesis model allows the quantitative determination of micromovements in the gap tissue and shows the importance of ideal realignment, which has a decisive influence on micromovements in the gap tissue.

Cited by 11 publications

References 26 publications

Three-dimensional locking plate and conventional miniplates in the treatment of mandibular anterior fractures

Three-dimensional locking plate and conventional miniplates in the treatment of mandibular anterior fractures

Finite element analysis of low-profile reconstruction plates for atrophic mandibles: a comparison of novel 3D grid and conventional plate designs

Clinical results of two different three-dimensional plate types for the treatment of mandibular angle fractures: a retrospective analysis

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