The aim of this study is to carry out a systematic review of the existing literature on postoperative morbidity after general anaesthesia (GA) in the dental care of paediatric patients, its frequency, characteristics and association with the intervention performed.

An exhaustive search of the literature published up to 23 February 2022 was carried out in PubMed, Web of Science, Cochrane and EBSCO, with the following strategy: (infant OR child OR adolescent) AND (Oral Surgical Procedures OR Dentistry, Operative) AND Anesthesia, General AND Postoperative Complications.

The most frequent reason for the indication of general anaesthesia was dental caries and its complications (up to 91.0% of patients), followed by lack of cooperation/anxiety and/or fear for dental procedures in the office (between 39.8 and 47.9%). There is a higher prevalence for treatments in the special patient group reaching 87.7% compared to 63.3% in healthy patients. The main comorbidities recorded were: physical or mental disability, neurological, haematological, cardiac disorders, asthma, Down's syndrome; it was not possible to establish their association with the intervention performed. Regarding complications, complaints occurred between 43.0 and 98.9% of cases within the first 24 hours, the main reason being pain (between 14.0% and 95.0%).

Pediatric dental procedures under GA carry a very low risk of major complications, but have a virtually universal incidence of minor complications.