View the CAT printer-friendly / share this CAT
Title Nd:YAG Laser More Effective in Reducing Dentin Hypersensitivity Secondary to Recession Than an Er:YAG laser
Clinical Question In adult patients with dentin hypersensitivity due to recession, will the use of an Nd:YAG laser, compared to a Er:YAG laser, result in less dentin hypersensitivity?
Clinical Bottom Line A Nd:YAG laser has been shown to be more effective in reducing dentin hypersensitivity secondary to recession than an Er:YAG laser. This is supported by two randomized controlled trials in which treatment with a Nd:YAG laser outperformed treatment with an Er:YAG laser by a clinically significant margin. Treatment of dentin hypersensitivity with a Nd:YAG laser is within the capability of the average general dental practice and likely to be accepted by the average patient.
Best Evidence (you may view more info by clicking on the PubMed ID link)
PubMed ID Author / Year Patient Group Study type
(level of evidence)
#1) 17115237Birang/20079 adult patients with a total of 63 chronic hypersensitive teeth; each patient had at least 3 hypersensitive teethRandomized Controlled Trial
Key resultsThe Nd:YAG laser (1 W, 15 Hz, 60 s, two times) resulted in a significant reduction in pain as assessed by a visual analog scale (VAS) at each follow-up examination (p<0.0005) immediately after, 1, 3 and 6 months post treatment compared to Er:YAG laser (100 mJ, 3 Hz, 60 s, two times) and a control group without treatment.
#2) 20932130Dilsiz/201024 adult patients with a total of 96 teeth with Miller’s class I or class II gingival recessions. Randomized Controlled Trial
Key resultsEr:YAG (2,940 nm, 60 mJ/pulse, 2 Hz, 20 s), Nd:YAG (1,064 nm, 100 mJ/pulse, 15 Hz, 100 s), and diode (808 nm, 100 mW, 20 s) lasers all significantly reduced dentin hypersensitivity based on a visual analog scale (VAS). Nd:YAG laser irradiation was more effective in treatment of dentin hypersensitivity (p<0.001); Nd:YAG group VAS scores were significantly lower than the other groups at each follow-up examination (p<0.001) at 15, 30, and 60 days post-treatment.
Evidence Search “Er:YAG and Nd:YAG dentin hypersensitivity” AND “Er:YAG and Nd:YAG laser sensitivity” AND “Er:YAG and Nd:YAG hypersensitivity”
Comments on
The Evidence
Validity: The Birang and the Dilsiz study were both randomized controlled trials, but neither study was double-blinded. Both studies did use adequate follow-up criteria and analyzed their patients using the same system (Visual Analog Scale). Perspective: One issue with comparing different lasers is related to the type of laser device and irradiation parameters used. Different parameters were used for the Birang and the Dilsiz studies. Both studies were well designed with a reasonable short-term approach of treatment of dentin hypersensitivity, but a long-term approach should also be investigated.
Applicability The results of these studies indicate that Nd:YAG lasers may decrease dentinal hypersensitivity more effectively than Er:YAG lasers for treatment of dentin hypersensitivity due to gingival recession.
Specialty/Discipline (General Dentistry) (Periodontics)
Keywords Nd:YAG laser, Er:YAG laser, dentin hypersensitivity, dentine hypersensitivity, laser therapy
ID# 3255
Date of submission: 06/13/2017spacer
E-mail lruszkiewicz94@midwestern.edu
Author Lisa Kubik
Co-author(s) e-mail
Faculty mentor/Co-author Christine Halket, DDS, MS
Faculty mentor/Co-author e-mail chalke@midwestern.edu
Basic Science Rationale
(Mechanisms that may account for and/or explain the clinical question, i.e. is the answer to the clinical question consistent with basic biological, physical and/or behavioral science principles, laws and research?)
post a rationale
None available
Comments and Evidence-Based Updates on the CAT
post a comment
None available

Return to Found CATs list