Orthodontic intervention (without extraction) compared with extraction or no orthodontic intervention for treating deep bite and retroclined upper front teeth in children

Patient or population: children with deep bite and retroclined upper front teeth

Settings: orthodontic clinic

Intervention: orthodontic treatment

Comparison: extraction or no treatment

Dento‐occlusal results of treatment, measured with the PAR index

*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
CI: confidence interval; RR: risk ratio; RCT: randomised controlled trial; CCT: controlled clinical trial

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.