The aim of this study was to report the effect of laser diode on the treatment of burning mouth syndrome (BMS)

Patients were randomly allocated to two different groups:

the first one (group A) underwent Laser diode whereas the second one (group B) received Laser diode inactive

The inclusion criteria were as follows: (a) oral burning sensation, at least in the last 6 months; (b) no detection of oral mucosal lesions; and (c) ability to complete the present clinical trial. The exclusion criteria were as follows: (a) diagnosis of Sjögren syndrome on the basis of European criteria ; (b) previous head and neck radiotherapy; (c) diagnosed lymphoma; (d) hepatitis C infection; (c) pregnant or breast-feeding women

Inclusion Criteria:

• diagnosis of burning mouth syndrome in accordance the International Classification of Headaches: continuous symptoms of oral burning or pain on a daily or almost daily basis, during all or part of the day for more than 6 months

Exclusion Criteria:

• history of head and neck malignancy, radiation therapy to the head and neck area, poorly managed diabetes mellitus, chronic thyroid disease, or known Sjogren's disease and pregnant