The Open Dentistry Journal

ISSN: 1874-2106 ― Volume 14, 2020

Sylc Air Polishing Versus Fluoride Varnish Application in Managing Dentin Hypersensitivity in Non-Carious Cervical Lesions: A Randomized Clinical Trial

Dina Ezz Eldin Mohamed Ahmed1, *, Mohsen Hussein Abielhassan1, Heba Salah Eldin Hamza1, Mohamed Fouad Haridy1, Mai Mamdouh1
1 Department of Conservative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt



To determine the effectiveness of Sylc (a bioactive glass-based powder) delivered by an air polishing system compared to fluoride varnish application in managing Dentin Hypersensitivity (DH).


This study was a double-blinded randomized clinical trial where 50 participants with DH in at least one tooth with a non-carious cervical lesion were included and randomized into two groups (25 participants each) to receive either Sylc air polishing or fluoride varnish application. Baseline and post-intervention measurements of pain were carried out using evaporative, thermal and tactile stimuli using a modified visual analog scale at 3 minutes, 1, 2, 3and 4 weeks, 6 months and 1 year post-intervention. Data for pain intensity was recorded and analyzed for each group.


For the three stimuli used, Sylc air polishing showed statistically significant reduction of pain intensity (P<0.05) after 3 weeks and up to 1 year post-intervention. Fluoride varnish application showed a statistically significant reduction of pain intensity in evaporative and thermal stimuli at 1 week post-intervention only.


Sylc air polishing was effective in relieving pain due to DH after 3 weeks and up to 1 year post-intervention, which showed that it can be used as a long-term treatment for DH.

Keywords: Sylc, Bioactive glass, Air polishing, Flouride varnish, Dentin hypersensitivity, Pain.

Article Information

Identifiers and Pagination:

Year: 2020
Volume: 14
First Page: 120
Last Page: 126
Publisher Id: TODENTJ-14-120
DOI: 10.2174/1874210602014010120

Article History:

Received Date: 26/12/2019
Revision Received Date: 21/02/2020
Acceptance Date: 23/02/2020
Electronic publication date: 22/04/2020
Collection year: 2020

© 2020 Ahmed et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Conservative Dentistry, Faculty of Dentistry – Cairo University, 11 El-Saraya Street, Manial, Cairo, Egypt; Tel: +201008007157;

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