NCT02931734.

Study name	Assessment of different protocols for cervical dentin hypersensitivity treatment (CDH)
Methods	Double‐blinded, parallel RCT
Participants	Sample size: not mentioned Inclusion criteria: presence of dentine exposure lesions with clinical diagnosis of moderate or severe tooth sensitivity; good oral hygiene Exclusion criteria: cavities; presence of periodontal disease and/or parafunctional habits; cracks or enamel fractures; extensive or unsatisfactory restorations; recent restorations involving the labial surface; dentures; orthodontics
Interventions	‐ Group 1: active comparator: resin modified glass ionomer (RMGI) Resin modified glass ionomer; an application every 48 hours; 4 sessions ‐ Group 2: active comparator: potassium nitrate 2% (KF) Potassium nitrate and sodium fluoride 2%; an application every 48 hours; 4 sessions ‐ Group 3: active comparator: low‐level laser therapy ‐ GaAlAs (LLLT) Low level laser therapy ‐ GaAlAs; an application every 48 hours; 4 sessions ‐ Group 4: active comparator: RMGI and KF Resin modified glass ionomer and potassium nitrate and sodium fluoride 2%; an application of the 2 associated products, every 48 hours; 4 sessions ‐ Group 5: active comparator: RMGI and LLLT Resin modified glass ionomer and low‐level laser therapy ‐ GaAlAs; an application of the 2 associated products, every 48 hours; 4 sessions ‐ Group 6: active comparator: KF and LLLT Potassium nitrate and sodium fluoride 2% and low‐level laser therapy ‐ GaAlAs; an application of the 2 associated products, every 48 hours; 4 sessions ‐ Group 7: active Comparator: RMGI, KF, LLLT Resin modified glass ionomer, potassium nitrate and sodium fluoride 2%, and low‐level laser therapy ‐ GaAlAs; an application of the 3 associated products, every 48 hours; 4 sessions
Outcomes	Level of cervical dentine hypersensitivity, measured by VAS (time frame: 24 weeks)
Starting date	‐
Contact information	‐
Notes	‐