When a tooth with an apical lesion is identified, an apicoectomy is frequently performed when nonsurgical treatment is considered unfeasible or has previously failed. However, the treatment is usually difficult in molars. This article describes a minimally invasive procedure for removing a gutta-percha point under the maxillary sinus mucosa using an ultrathin arthroscope and a visualization approach in apicoectomy using an intranasal endoscope. These surgical techniques using endoscopes are minimally invasive and reliable procedures that provide limited incision and bone removal and respect the integrity of the maxillary sinus.
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