Duration of orthognathic-surgical treatment

Acta Odontol Scand. 2017 Jul;75(5):372-375. doi: 10.1080/00016357.2017.1317830. Epub 2017 Apr 21.


Objective: The objective of this study was to determine the duration of orthognathic-surgical treatment conducted with conventional pre- and post-surgical orthodontic treatment phases.

Material and methods: The study material was comprised of the files of 185 consecutive patients treated in Oral and Maxillofacial Unit, Tampere University Hospital, Finland, in 2007-2014. The files were reviewed and the following data was obtained: gender and age of patients, ICD-10 diagnosis, type of malocclusion, duration of pre- and post-surgical orthodontic treatment and type of operation.

Results: Total treatment duration (median) from placement of separating rings for banding until fixed orthodontic appliances were removed and retention period started was 31.1 months, of which pre-surgical orthodontics took 24.4 months and postsurgical 6.4 months. Treatment duration (median) was in BSSO was 32.1, LeFort 1 30.1 and bimaxillary osteotomy 29.7 months. Orthodontic extractions were performed in 35 patients (19%). If the orthodontic treatment included tooth extraction, the duration of pre-surgical treatment was on average 10 months longer, which is a statistically highly significant difference (p < .001, linear regression).

Conclusions: Tooth extractions (excluding 3rd molars) included in pre-surgical orthodontic treatment prolong treatment time by an average of 8-9 months.

Keywords: Orthodontics; orthognathic surgery; tooth extraction; treatment duration.

MeSH terms

  • Adolescent
  • Adult
  • Appointments and Schedules*
  • Female
  • Finland
  • Humans
  • Male
  • Malocclusion / surgery*
  • Orthodontics, Corrective / methods*
  • Orthognathic Surgical Procedures / statistics & numerical data
  • Time Factors
  • Tooth Extraction / statistics & numerical data
  • Treatment Outcome
  • Young Adult