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Oral and Maxillofacial Surgery

, Volume 23, Issue 4, pp 395–405 | Cite as

Evaluation of the impact of preoperative use of dexamethasone and cyclobenzaprine in surgical extraction of lower third molars on trismus by electromyographic analysis

  • Fernando Vagner Raldi
  • Rodrigo Dias Nascimento
  • Fábio Ricardo Loureiro SatoEmail author
  • Lucio Murillo Santos
  • José Benedito Oliveira Amorim
  • Michelle Bianchi de Moraes
Original Article
  • 44 Downloads

Abstract

Purpose

The aim of this study was to evaluate the influence of cyclobenzaprine and dexamethasone on ​the electrical activity of the masticatory muscles in patients who had undergone lower third molar surgery.

Methods

Thirty bilateral impacted lower third molars with indication of extraction were randomised into three groups: the control group, the dexamethasone, and the cyclobenzaprine group. To obtain muscular electrical activity and mouth opening, an electromyographic device was used at mandibular rest and maximum voluntary contraction and compared pre- and post-operatively.

Results

During muscle contraction, no significant difference was observed in the electromyographic records on the non-operated side. On the operated side, there was a reduction in electrical activity for both drugs pre-operatively and immediately post-operatively compared to the control group. All pharmacological agents promoted a higher mouth opening compared to control group.

Conclusion

The results suggest that dexamethasone and cyclobenzaprine may be useful as an adjuvant in the prevention of motor dysfunctions in third molar surgery.

Keywords

Muscle relaxants Corticosteroid Third molars Electromyography 

Notes

Compliance with ethical standards statement

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

The study was approved by the local ethics committee.

Informed consent

Informed consent was obtained from all participants.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Fernando Vagner Raldi
    • 1
  • Rodrigo Dias Nascimento
    • 1
  • Fábio Ricardo Loureiro Sato
    • 1
    • 2
    Email author
  • Lucio Murillo Santos
    • 3
  • José Benedito Oliveira Amorim
    • 3
  • Michelle Bianchi de Moraes
    • 1
  1. 1.Department of Surgery and Oral Diagnoses, College of DentistryState University of São Paulo – UNESPSão José dos CamposBrazil
  2. 2.Department of Oral and Maxillofacial Surgery, College of DentistryState University of São Paulo – UNESPSão José dos CamposBrazil
  3. 3.Department of Bioscience and Oral Diagnoses, College of DentistryState University of São Paulo – UNESPSão José dos CamposBrazil

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