Locking versus nonlocking plates in mandibular reconstruction with fibular graft--a biomechanical ex vivo study

Clinical Oral Investigations
S TrainottiT Steiner

Abstract

The main goal of the present study was to compare the biomechanical stability of locking plates and conventional miniplate combinations in human mandibles reconstructed with fibular grafts. A specially developed and well-proven testing device reproduced the in vivo loading conditions on the mandible. Cadaveric human mandibles (n = 12) reconstructed with harvested human fibular bone grafts were divided into two groups, and different osteosynthesis systems were applied using two lines of plates per osteotomy. On the test apparatus, the specimens were stressed to failure, and interfragmentary movement was monitored and quantified with a contact-free optical measurement system. The relevant interfragmentary movement results from a Euclidean summary calculation which considered all three spatial angles around the axes. Using values up to a maximum load of 300 N, the conventional six-hole miniplates (profile 1.0) had an average value of 7.45° ± 1.46°, and the locking six-hole plates (profile 1.3) had an average value of 12.16° ± 2.37° for rotational interfragmentary movement. The miniplate system exhibited a significantly superior performance in fixation compared to the fixed-angle system (p < 0.05). According to these biomechanical ...Continue Reading

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Citations

Jun 20, 2015·The British Journal of Oral & Maxillofacial Surgery·Isabella GrohmannTimm Steiner
Apr 14, 2016·The British Journal of Oral & Maxillofacial Surgery·Timm SteinerStefan Raith
Apr 14, 2015·Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery·T TorsiglieriT Steiner
Dec 17, 2014·Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery·T SteinerF Hölzle
Jun 9, 2016·Computer Methods in Biomechanics and Biomedical Engineering·Stefan RaithHorst Fischer
May 3, 2021·International Journal of Oral and Maxillofacial Surgery·K KreutzerB Beck-Broichsitter

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