In vitro evaluation of conventional and locking miniplate/screw systems for the treatment of mandibular angle fractures

International Journal of Oral and Maxillofacial Surgery
Paulo Domingos Ribeiro-JuniorMaria B Papageorge

Abstract

This in vitro study evaluated the influence of the type of miniplate and the number of screws installed in the proximal and distal segments on the stability and resistance of Champy's osteosynthesis in mandibular angle fractures. Sixty polyurethane hemimandibles with bone-like consistency were randomly assigned to four groups (n=15) and sectioned in the mandibular angle region to simulate fracture. The bone segments were fixed by different osteosynthesis methods using 2.0 mm miniplates and 2.0 mm × 6 mm monocortical screws. In groups 1 and 2, two conventional (G1) or locking (G2) screws were installed in each bone segment using a conventional (G1) or a locking (G2) straight miniplate; in groups 3 and 4, three conventional (G3) or locking (G4) screws were installed in the proximal segment and four conventional (G3) or locking (G4) screws were installed in the distal segment using a conventional (G3) or a locking (G4) seven-hole straight miniplate. The hemimandibles were loaded in compressive strength until a 4mm displacement occurred between the segments, vertically or horizontally. Locking plate/screw systems provided significantly greater resistance to displacement than conventional ones (p<.01). Locking miniplates offered mor...Continue Reading

References

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Citations

Oct 16, 2012·Oral and Maxillofacial Surgery·Bruno Ramos Chrcanovic
Mar 4, 2014·International Journal of Oral and Maxillofacial Surgery·B T SuerF Atil
Jun 5, 2012·International Journal of Oral and Maxillofacial Surgery·P D Ribeiro-JuniorM B Papageorge
Mar 31, 2016·Nigerian Journal of Clinical Practice·F AtikM Arslan
Aug 15, 2014·International Journal of Oral and Maxillofacial Surgery·B R Chrcanovic
Jan 13, 2015·Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery·Raquel Correia de MedeirosRoger William Fernandes Moreira
Jul 13, 2014·Oral and Maxillofacial Surgery·Marco Aurélio Kenichi YamajiAlexandre Elias Trivellato
May 30, 2017·Cranio : the Journal of Craniomandibular Practice·Paulo Domingos Ribeiro-JuniorRodrigo Tiossi
Apr 3, 2019·The Journal of Craniofacial Surgery·Mehmet Emrah Polat, Ertunc Dayi
Oct 22, 2016·The Journal of Craniofacial Surgery·Paulo Domingos Ribeiro-JuniorFernando Gianzanti Peres
Jul 14, 2019·The Journal of Craniofacial Surgery·Mehmet Emrah Polat, Ertunc Dayi
Jul 3, 2013·The Journal of Contemporary Dental Practice·Sunil S NayakMuralee Mohan

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