The use of general anaesthesia for orthodontic extractions.

Aim: The aims of the study were to evaluate 1) the uptake of general anaesthesia 2) the dental factors influencing use of general anaesthesia for routine orthodontic extractions.
Research Design: Retrospective cross-sectional.
Participants: All patients, aged 16 years and under (n=145), currently undergoing orthodontic treatment at the University Dental Hospital of Manchester, who had received extractions, for their current course of treatment.
Method: Patients were asked to complete a questionnaire after appliance adjustment.
Main Outcome Measures: 1) type of anaesthesia received for the most recent orthodontic extractions 2) whether a choice of anaesthesia was given 3) number of permanent teeth removed for the current course of orthodontic treatment 4) previous experience of general anaesthesia.
Results: The response was 87%. Twenty-two per cent of patients received general anaesthesia, 64% local anaesthesia and 14% inhalation sedation. Sixty-five per cent of patients were not given a choice of anaesthesia for extractions. Stepwise logistic regression analysis revealed that a patient was more likely to receive a general anaesthetic if: 1) they had received a GA in the past (for fillings or extractions) 2) more than four teeth were extracted.
Conclusions: Local anaesthesia was predominantly used for orthodontic extractions although the use of general anaesthesia was still quite high. The majority of patients were not given a choice of anaesthesia for routine extractions. Previous exposure to general anaesthesia and removal of more than four teeth increased the likelihood of a patient receiving general anaesthesia.