Stability testing of a two miniplate fixation technique for mandibular angle fractures. An in vitro study

Choi, Byung Ho; Yoo, Je-Hyun; Kim, K.N.; Kang, Ho-Jung

doi:10.1016/s1010-5182(05)80460-3

Cited by 83 publications

(52 citation statements)

References 4 publications

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“…Mandibular angle fractures are plagued with widespread complications ranging from 0 to 32 % [8][9][10]. Several factors play significant role in the incidence of complications, but the key factor was the rigidity of fixation applied across the fracture which is inversely proportional [9].…”

Section: Discussionmentioning

confidence: 99%

Management of Mandibular Angle Fractures: Single Stainless Steel Linear Miniplate Versus Rectangular Grid Plate—A Prospective Randomised Study

Kanubaddy

Devireddy

Kumar

et al. 2016

J. Maxillofac. Oral Surg.

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Purpose This prospective study was conducted to evaluate the efficacy of stainless steel single linear miniplate with rectangular grid plate in the treatment of mandibular angle fractures. Methods This study included 30 patients who were allocated randomly into two groups of each. Group 1 patients were treated with single 2 mm 9 4 hole linear stainless steel miniplate and group 2 patients with 2 mm 9 4 hole rectangular grid plate. Patients were evaluated for fracture stability, occlusion, mouth opening, and complications at 1st week, 1 and 3 months post operatively. Results There were no significant differences between the two groups with respective variables statistically. In group 1 20 % (n = 3) had mild occlussal derangement 6.66 % (n = 1) patient had deranged occlusion at 1 week post operatively and 13.3 % (n = 2) had mild derangement at 1 month post operatively. In group 2 6.66 % (n = 1) had mild derangement at 1 week postoperatively. 20 % (n = 3) had limited mouth opening at 1 week in group 1 and 13.3 % (n = 2) in group 2. All patients in both groups achieved adequate mouth opening by the end of 3 month. None of the patients in both groups had plate fracture, screw loosening, non union or mal-union. Conclusion Within the limits of the study, use of rectangular grid plates for fixation of mandibular angle fractures was reliable with low complication rates, easy adaptation and an effective alternative to conventional miniplates. Further clinical studies with larger sample size can derive a more comprehensive conclusion.

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Section: Discussionmentioning

confidence: 99%

Management of Mandibular Angle Fractures: Single Stainless Steel Linear Miniplate Versus Rectangular Grid Plate—A Prospective Randomised Study

Kanubaddy

Devireddy

Kumar

et al. 2016

J. Maxillofac. Oral Surg.

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“…Kroon et al 15 and Choi et al 16 observed bony gaps along the inferior fracture border, and this fracture movement was thought to contribute to subsequent complications, including infection. A second plate was suggested to reduce anterior posterior separation of the fracture line as well as lateral displacement, which is frequently observed on post-operative radiographs.…”

Section: Discussionmentioning

confidence: 99%

Fractures of angle of mandible – A retrospective study

Singh

Fry

Joshi

et al. 2012

Journal of Oral Biology and Craniofacial Research

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Aims: This retrospective study was done to evaluate the efficacy of single miniplate osteosynthesis at superior border of angle of mandible. Material and methods:In this study 50 patients were treated by single miniplate osteosynthesis according to Champy's principle. Bite force generated was used as a parameter for judging the efficacy of internal fixation. In this article we present our experience over the years in the management of the fractures of angle of mandible based on this model.Results: Most patients were of 21e30 yrs of age with unilateral angle fracture of mandible except one patient who had isolated bilateral angle fracture. The patients were treated successfully according to Champy's principle of osteosynthesis. There was a progressive improvement in the bite force generated after osteosynthesis. Conclusions:The angle of the mandible is an anatomically weak and an area susceptible to fracture. The presence of an impacted or partially erupted third molar tooth further weakens it. Angle of mandible is the most common site for fracture however, bilateral angle fracture is very rare and uncommon. Osteosynthesis according to Champy's model led to an early functional improvement as demonstrated by the bite force generated.

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“…In the literature on the subject experimental results [1][2][3] relating mainly to ways of joining osteotomic bone fragments are reported but one can rarely fi nd (particularly in the Polish literature) papers dealing with the effect of the kind of osteosynthesis on the rigidity of the system and its strength.…”

Section: Introductionmentioning

confidence: 99%

Assessment of rigidity and strength of selected osteosyntheses after bilateral sagittal split osteotomy

Stróżyk¹,

Szust²,

Nowak³

2008

Physiotherapy

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Streszczenie:Celem niniejszej pracy była doświadczalna ocena in vitro sztywności na zginanie i wytrzymałości wybranych zespoleń stosowanych do połączenia odłamów kostnych po wykonaniu obustronnej strzałkowej osteotomii gałęzi żuchwy. Ze względu na porównawczy charakter badań zdecydowano się na zastosowanie schematu obciążenia zaproponowanego przez Armstronga i układu do zginania trójpunktowego. Badania zostały przeprowadzone na poliuretanowych modelach ludzkiej żuchwy -jeden reprezentował anatomicznie i fi zjologicznie poprawny model żuchwy, a w pozostałych wykonano osteotomię wg Obwegesera, a następnie wykonano ich zespolenie. Do połączenia odłamów wykorzystano dwa rodzaje wkrętów i dwa rodzaje płytek do osteosyntezy, tj. 4-oczkową i 6-oczkową. Sztywność na zginanie wyznaczono na podstawie klasycznego równania linii ugięcia belki przy zginaniu trójpunktowym w zakresie obciążeń pooperacyjnych, natomiast do oceny wytrzymałości wykorzystano wartość maksymalnego obciążenia. Wykazano, że w modelach po osteotomii znacząco zmniejsza się sztywność i wytrzymałość w stosunku do modelu bez osteotomii.Słowa kluczowe: żuchwa ludzka, obustronna strzałkowa osteotomia gałęzi żuchwy, osteosynteza, mini płytki, bikortykalne wkręty, badanie biomechaniczne sztywności oraz wytrzymałości. Abstract:The aim of this research was to experimentally assess in vitro the conventional fl exural rigidity and strength of selected osteosyntheses employed to join bone fragments after bilateral sagittal split osteotomy. Because of the comparative nature of the research the loading confi guration proposed by Armstrong and the three-point bending system were used. Tests were carried out on polyurethane models of the human lower jaw. One model represented the anatomically and physiologically normal mandible while in the case of the other models Obwegeser osteotomies were performed and subsequently osteosynthesized. Two types of screws and two types of plates, i.e. a four-hole plate and a six-hole plate, were used to join the bone fragments. Conventional fl exural rigidity was determined using the classic beam bending line equation for three-point bending in the postoperative load range. The test results show that the conventional rigidity and strength of the osteotomized models are signifi cantly lower in comparison with the model without osteotomy.Key words: human mandible, bilateral sagittal split osteotomy, osteosyntheses, miniplates, biocortical srews, biomechanical rigidity and strength testing. WprowadzenieObustronna strzałkowa osteotomia gałęzi żuchwy (ang. bilateral sagittal split osteotomy -BSSO) jest podstawową procedurą stosowaną w chirurgii ortognatycznej w celu wykonania korekcji rozwojowych oraz nabytych wad dolnej żuchwy. Obecnie najbardziej powszechne są dwie metody łączenia przeciętych odłamów kości: 1) za pomocą śrub bikortykalnych, 2) za pomocą implantów, tzn. wszystkich rodzajów płytek. Literatura dotycząca wyników badań doświadczal-nych [1-3] odnosi się głównie do sposobów łączenia odłamów kości, ale rzadko można znaleźć (szczeg...

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Stability testing of a two miniplate fixation technique for mandibular angle fractures. An in vitro study

Cited by 83 publications

References 4 publications

Management of Mandibular Angle Fractures: Single Stainless Steel Linear Miniplate Versus Rectangular Grid Plate—A Prospective Randomised Study

Management of Mandibular Angle Fractures: Single Stainless Steel Linear Miniplate Versus Rectangular Grid Plate—A Prospective Randomised Study

Fractures of angle of mandible – A retrospective study

Assessment of rigidity and strength of selected osteosyntheses after bilateral sagittal split osteotomy

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