The purpose of the present article is to review the removal of impacted mandibular third molars using laser and bur, and to explore its possible complications and extraction difficulty based on the degree of classification, anatomical and radiologic findings, and results from a literature review. The literature was selected through a search of PubMed and articles, using keywords such as "mandibular third molar," "impacted mandibular third molar," "inferior alveolar nerve injury third molar," and "lingual nerve injury." Additionally, a manual search was performed in major anatomy and oral surgery journals and books.