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ORIGINAL RESEARCH Table of Contents   
Year : 2014  |  Volume : 25  |  Issue : 6  |  Page : 711-716
Comparing the effects of cryotherapy with nitrous oxide gas versus topical corticosteroids in the treatment of oral lichen planus

1 Department of Oral and Maxillofacial Medicine, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
2 Dental Branch Islamic Azad University, Tehran, Iran
3 Yasuj University of Medical Sciences, Yasuj, Iran
4 Tehran University of Medical Sciences, Tehran, Iran

Correspondence Address:
Maryam Zahed Zahedani
Department of Oral and Maxillofacial Medicine, School of Dentistry, Shiraz University of Medical Sciences, Shiraz
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-9290.152166

Clinical trial registration IRCT2012120311656N1

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Background: Oral lichen planus (OLP) is a chronic inflammatory disease of the oral mucosa with treatment challenges for clinicians. Aims: The objective of this study is to compare the effects of cryotherapy as a new modality with topical corticosteroids as a conventional therapy in the treatment of OLP. Materials and Methods: Thirty patients with bilateral OLP lesions were selected. From each patient a lesion on one side was chosen randomly for a single session of cryotherapy with nitrous oxide gas and the lesion on the other side received triamcinolone acetonide 0.1% ointment in orabase. Treatment outcome was measured by means of an appearance score, pain score (visual analogue scale), and severity of lesions before treatment and after 2, 4 and 6 weeks of treatment. Statistical Analysis Used: Paired samples t-test and Wilcoxon test. Results: In both methods of treatment sign score, pain score and severity of lesions was significantly reduced in all follow-up sessions (P < 0.05). But the treatment outcome and relapse was not significantly different between the two treatment methods (P > 0.05). Conclusion: Cryotherapy with nitrous oxide gas is as effective as topical triamcinolone acetonide in the treatment of OLP with no systemic side effects and needs less patient compliance. It can be considered as an alternative or adjuvant therapy in OLP patients to reduce the use of treatments with adverse effects.

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