Also layers of “third molars”, usually appear in the mouth around 18 years, and in most cases in an invalid position to promote occlusion with the other teeth. They may not even erupt, so-called “impacted” or “impacted teeth”. These teeth usually need to be removed, basically for two reasons: These teeth usually need to be removed, basically for two reasons: – ORTHODONTIC INDICATION; – RISK OF CYST FORMATION. The surgery to remove it is easy and can take up to 40 minutes. The post-operative period is also calm, but it requires some care.