Clinical Oral Investigations

, Volume 22, Issue 3, pp 1503–1511 | Cite as

A comparative study between traditional fixation with miniplates and modified lag screws for the treatment of mandibular fractures

  • Ana Rocío García Carricondo
  • Francisco Javier Quesada Bravo
  • Fernando Espín Gálvez
  • Tesifón Parrón Carreño
  • Raquel Alarcón Rodriguez
Original Article



The objective of this study is to investigate two internal fixation surgical techniques for mandibular fractures in order to compare modified lag screw techniques with standard miniplates.

Materials and methods

This is an observational prospective study. Three hundred eighteen patients were operated on for mandibular fractures. The patients were divided into two groups according to the type of surgical technique used: modified lag screws (155 patients) and traditional miniplates (163 patients). Analyses were made of sociodemographic and preoperative variables, the parameters related to the fracture type and postoperative data.


There were no differences between the two groups regarding their sociodemographic characteristics. The modified lag screws were primarily used with double fractures, while conventional miniplates were more often used with simple fractures. The number of complications was higher with the miniplate technique. The unfavorable fractures had an OR of 5.75 due to postoperative complications; double fractures had an OR of 8.87 and simple fractures an OR of 19.53, which, in both cases, were lower with conventional miniplates than with modified lag screws.


Modified lag screws provide a rigid fixation system that is as secure as miniplates, but with greater compression between the fragments, less postsurgical gap, faster ossification, and fewer postoperative complications.

Clinical relevance

The modified screw technique is a safe tool that does not require any specific osteosynthesis materials not found in a basic traumatology kit and has a lower cost, due to the reduced amount of material used.


Mandibular fracture Osteosynthesis Lag screw Miniplate 



This study did not receive any specific grants from public, commercial, or non-profit funding agencies.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This study was approved by the Torrecardenas (Almeria) Hospital Facility Ethics Committee.

Informed consent

For this type of study, formal consent is not required.


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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Ana Rocío García Carricondo
    • 1
  • Francisco Javier Quesada Bravo
    • 1
  • Fernando Espín Gálvez
    • 1
  • Tesifón Parrón Carreño
    • 2
  • Raquel Alarcón Rodriguez
    • 2
  1. 1.Department of Oral and Maxillofacial SurgeryTorrecardenas Hospital ComplexAlmeriaSpain
  2. 2.Medical AreaUniversity of AlmeriaAlmeriaSpain

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