Predictability of clear aligners in achieving planned dental arch expansion during mixed dentition: a systematic review and meta-analysis

Key Points

• The aim is to evaluate the effectiveness of clear aligners for dental arch expansion in mixed dentition.
• Systematic review of studies using Invisalign First for arch expansion
• Meta-analysis to quantify predictability
• Focus on mandibular arch and anterior teeth outcomes
• Invisalign First shows modest to moderate predictability for arch expansion
• Particularly effective in the mandibular arch and anterior teeth
• Limited effectiveness noted in the posterior maxilla