Influence of the presence, congenital absence, or prior removal of third molars on recurrence of mandibular incisor crowding after orthodontic treatment: Systematic review and meta-analysis

Conclusion The presence of third molars had no repercussion on the irregularity index and intercanine width, thus the presence of third molars appear to exert no influence on the recurrence of crowding of mandibular incisors.
Source: Journal of the World Federation of Orthodontists - Category: Dentistry Source Type: research