Yilmaz 2014.

Study characteristics
Methods	Study type: RCT (split‐mouth design, 3 groups) Duration of trial: not mentioned Duration of follow‐up: immediately after treatment
Participants	Inclusion criteria: patients with 3 sensitive teeth with VAS score of at least 4, Miller Class III mobility and were indicated to extraction Exclusion criteria: patients with carious lesions in selected or neighboring teeth, defective restoration; patients who had undergone professional desensitizing therapy during the previous 6 months or using desensitizing toothpaste in last 3 months; patients being under analgesics/anti‐inflammatory drugs at time of study, pregnancy or smoking Total number: 20 participants with 60 teeth Age range: 18 to 60 years Sex (M/F): 8/12
Interventions	Group 1: Er,Cr:YSGG laser (025 W, 44 J/cm2) Group 2: Er,Cr:YSGG laser (05 W, 89 J/cm2) Details: 2780 nm wavelength Er,Cr:YSGG laser was applied 30 s to Groups 1 and 2 in the hard tissue mode with the MZ6 tip (600 mm diameter, 6 mm length) using non‐contact mode at repetition rate of 20 pulses s1 and pulse duration of 140 ms, 0% water and 10% air Group 3: same Er,Cr:YSGG laser without laser emission was used
Outcomes	Responses to evaporative stimuli (air blast) (VAS) was assessed immediately after treatment
Notes	Baseline characteristics: each patient evaluated the perception of discomfort after the application of an air blast for 3 s at a distance of approximately 1 cm and at right angle to the buccal site of the assigned teeth. The adjacent teeth were isolated with cotton rolls to prevent false‐positive results; all stimuli were given by 1 operator in the same dental chair with the same equipment yielding similar air pressure (55 to 60 psi) and air temperature (21 to 22 °C) each time; after the stimulus, the patient was asked to record their overall sensitivity on a VAS Sample size calculation: the power analysis was conducted based on this minimum clinically significant difference in VAS scores, using alpha at level 005, at 80% power and a r of 07 Source of funding: this research was carried out without funding Ethics approval: quote: "Study protocol and related consent forms were approved by the Institutional Review Board and Ethics committee of Near East University" Informed consent: quote: "Following verbal information about the treatment plan, possible discomforts and potential risks, the subjects who signed the informed consent form were included in the study" Adverse events: none
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Lottery method was used Quote: "A unique number attended to the each treatment method and these numbers were put in a bowl, mixed"
Allocation concealment (selection bias)	Low risk	Quote: "A unique number attended to the each treatment method and these numbers were put in a bowl, mixed and then, without looking, the researcher selected numbers for each tooth"
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Quote: "The patients did not know what kind of therapy each tooth was receiving"
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Quote: "The effectiveness of all treatments was assessed at immediately after treatment by one calibrated examiner who was not aware of the type of treatment applied"
Incomplete outcome data (attrition bias) All outcomes	Low risk	No loss to follow‐up
Selective reporting (reporting bias)	Low risk	All intended outcomes were reported in study
Other bias	Low risk	No other sources of bias were identified Sample size calculation, source of funding and ethics approval were mentioned in the study

CPP‐ACPF = casein phosphopeptide amorphous calcium phosphate; CSP = calcium sodium phosphosilicate; DH = dentinal hypersensitivity; Er,Cr:YSGG = erbium,chromium:yttrium‐scandium‐gallium‐garnet; GaAIAs = gallium‐aluminum‐arsenide; J = Joules; LLLT = low‐level laser therapy; M/F = male/female; mW = milliwatt; NaF = sodium fluoride; n‐CAP = nano‐carbonate apatite; Nd:YAG = neodymium‐doped:yttrium‐aluminum‐garnet; nHAP = nano‐hydroxyapatite; nm = nanometer; PBM = photobiomodulation; RCT = randomized controlled trial; s = second; SD = standard deviation; VAS = visual analogue scale; VRS = verbal rating score.