en ارتقای سلامت، پیشگیری و کنترل بیماری‌ ها Health Promotion, Protection, and Disease Control پژوهشي Research Article <span style="font-size:12pt"><span style="line-height:16.0pt"><span new="" roman="" style="font-family:" times=""><b><i><span style="font-size:9.0pt">Background & Aims</span></i></b><b><span style="font-size:9.0pt">: </span></b><span style="font-size:9.0pt">Oral lichen planus (OLP) is a chronic inflammatory and autoimmune disease of stratified squamous epithelium. Numerous treatment approaches have been introduced for the treatment of OLP, but there is no substantial evidence to support the effectiveness of these methods. Green tea is a popular drink widely used to relief and treat inflammatory and autoimmune diseases. The present pilot study aimed to investigate the effect of green tea tablets on OLP. </span></span></span></span><br> <span style="font-size:12pt"><span style="line-height:16.0pt"><span new="" roman="" style="font-family:" times=""><b><i><span style="font-size:9.0pt">Materials & Methods</span></i></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> In this pilot clinical trial study, we recruited 10 patients (48.1 &plusmn; 12.44 years old) with erosive and atrophic OLP from Western Azerbaijan, Urmia, in Iran. All patients received a green tea tablet (450 mg) daily for one month. The patients were monitored and followed up for pain severity scale with a visual analog scale (VAS), lesion size, and number of lesions. Finally, the collected data were examined using statistical software. </span></span></span></span><br> <span style="font-size:12pt"><span style="line-height:16.0pt"><span new="" roman="" style="font-family:" times=""><b><i><span style="font-size:9.0pt">Results</span></i></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> The mean of VAS score before intervention was 4.1 &plusmn; 2.02, whereas it was 2.2 &plusmn; 2.25 at the end of the intervention. Statistical analysis indicated the decreased VAS score after 30 days of tablet consumption (p < 0.001). Moreover, lesion number and size were markedly decreased in patients after 30 days of tablet consumption. However, no complete recovery was observed in patients after 30 days. </span></span></span></span><br> <b><i><span style="font-size:9.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">Conclusion</span></span></span></i><span style="font-size:9.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">: </span></span></span></b><span style="font-size:9.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">Our study indicates that using green tea tablets could be an effective and complementary therapy for patients with erosive, inflammatory, and atrophic lesions. However, further studies are required to investigate green tea tablets efficiency in long-term usage.</span></span></span> Green tea, Herbal medicine, Oral lichen planus, Oral lesion 121 127 http://hsm.umsu.ac.ir/browse.php?a_code=A-10-149-1&slc_lang=en&sid=1 Negar Sarrafan Sarrafannegar.ns@gmail.com 10031947532846001446 10031947532846001446 No Department of Oral and Maxillofacial School of Dentistry, Urmia University of Medical Science, Urmia, Iran Seyyed Sajjad Pishva pishva.s@umsu.ac.ir 10031947532846001447 10031947532846001447 No Department of Periodontics, School of Dentistry, Urmia University of Medical Sciences, Urmia, Iran Mohammad Jafariheydarlou jafari.mo@umsu.ac.ir 10031947532846001448 10031947532846001448 No Department of Oral and Maxillofacial School of Dentistry, Urmia University of Medical Science, Urmia, Iran Fahimeh Irani Fam Iranifam@gmail.com 10031947532846001449 10031947532846001449 No Department of Oral and Maxillofacial School of Dentistry, Urmia University of Medical Science, Urmia, Iran Seyyed Amir Seyyedi seyyediamir@yahoo.com 10031947532846001450 10031947532846001450 Yes Department of Oral and Maxillofacial School of Dentistry, Urmia University of Medical Science, Urmia, Iran