Mucus build-up in the major and minor salivary glands causes mucoceles, which are nonneoplastic cystic lesions. Children are the most common age group for these lesions. Although local surgical excision is typically an option for treating these lesions, in this instance, a diode laser with a wavelength of 940 nm was used for excision in order to prevent intraoperative surgical problems including haemorrhage and oedema and to promote better healing.