Caries recurrence after treatment under general anaesthesia for early childhood caries: a retrospective cohort study
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To evaluate rates of caries relapse and explore factors affecting relapse rates after comprehensive dental treatment under general anaesthesia (GA).
A retrospective cohort study of children ≤6 years of age at the time of reference GA (RGA) who were in an anaesthetic low risk category [American Society of Anesthesiologists (ASA) classification 1 or 2], and had completed 36 months follow-up period was conducted. Patients’ demographics and dental records were collected. Associations between relapse rate and different factors affecting relapse rates were evaluated.
A total of 278 children with mean age of 47 ± 14 months were included. Over 8 % of children had more than one GA, 88 % attended their post-operative follow-up appointment and 45 % returned for all recall appointments over 3 years. During the 3-year follow-up, the relapse rate was 22 %. ASA-2 children and those with less than full primary dentition present at the RGA were more than twice as likely to experience caries relapse as compared to ASA-1 children (OR = 2.46, 95 % CI 1.33–4.56) and those with mixed dentition present at the RGA (OR = 2.74, 95 % CI 1.27–5.91).
ASA-2 health status and having less than a full primary dentition were major predictors of caries relapse after dental treatment under GA.
KeywordsDental caries Relapse General anaesthesia Risk factors
The author would like to acknowledge Junmin Yang, Department of Paediatrics, University of Toronto, Mount Sinai Hospital for his statistical support.
Conflict of interest
The authors declare no conflict of interest.
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