Two Cases of Kissing Molars

Abstract

Kissing molars （KMs） are an extremely rare condition in which the occlusal surfaces of impacted molars contact each other, with roots pointing in opposite directions. KMs are classified according to the type of impacted molars, the contact style of the occlusal surface, and the presence or absence of a radiolucent area around the crown. We experienced two cases of Class Ⅱ true KMs without cystic variant. In these cases, second and third molars were impacted with occlusal surfaces facing each other, without a pericoronal radiolucency around the crowns. Case 1: A panoramic X-ray and computed tomography revealed complete impaction of the right mandibular second and third molars that had occlusal surfaces contacting each other. Both teeth were extracted under general anesthesia. Case 2: A panoramic X-ray and computed tomography revealed that the occlusal surfaces of the impacted left mandibular second and third molars were facing each other directly, and the root of this impacted second molar was close to the apical radiolucent lesion of the left mandibular first molar. Under general anesthesia, tooth extraction of the left mandibular first, second and third molars and periapical cystectomy of the left mandibular first molar were performed. The postoperative courses of both cases have been good.