Eruption cysts are benign cysts that appear on the mucosa of a tooth shortly before its eruption. The majority disappear on their own. If they hurt, bleed or are infected they may require surgical treatment to expose the tooth and drain the content. Here we present a clinical case of a six-year-old child with an eruption cyst on the permanent maxillary central left incisor, which was handled using treatment with an Er,Cr-YSGG laser. It did not require suture, there was no haemorrhage, swelling, infection or postoperative pain. The treatment of eruption cysts with this technique facilitates obtaining the cooperation of pediatric patients and makes behavior management by the pediatric dentist easier.

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