Mandibular kinematics after orthognathic surgical treatment. A pilot study

Chiarella Sforza, Alessandro Ugolini, Davide Rocchetta, Domenico Galante, Andrea Mapelli, Aldo Bruno Giannì

Research output: Contribution to journalArticlepeer-review


We recorded three-dimensional mandibular movements, while the mouth was being opened and closed, using an optoelectronic motion analyser in 14 patients (5 skeletal Class II, 9 skeletal Class III) who were being assessed 7-49 months after orthognathic operations, and in 44 healthy subjects. All 14 patients had satisfactory healing on clinical examination, and function had been restored. Mandibular movement was divided into its rotational and translational components. On maximum mouth opening, the patients had significantly less total displacement of the mandibular interincisor point (p = 0.05), and more mandibular movement that was explained by pure condylar rotation (p = 0.006), than control subjects. There was no significant relation between maximum mouth opening and percentage rotation. While mandibular motion was well restored clinically by orthognathic surgery, the kinematics of the joint were modified. Larger studies and longitudinal investigations are necessary to appreciate the clinical relevance of the variations in condylar rotational and translational components.

Original languageEnglish
Pages (from-to)110-114
Number of pages5
JournalBritish Journal of Oral and Maxillofacial Surgery
Issue number2
Publication statusPublished - Mar 2010


  • Operation
  • Temporomandibular joint
  • Three-dimensional movement

ASJC Scopus subject areas

  • Oral Surgery
  • Otorhinolaryngology
  • Surgery


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