en Oral & maxillofacial surgery Oral & maxillofacial surgery Original article Original article <p dir="RTL"></p><p dir="RTL"></p><p dir="RTL"></p><p dir="RTL"></p> <p><strong>Background and aim:</strong> Cleft lip and cleft palate are among the most common orofacial abnormalities. Patients with these deformities commonly present with midface deficiency and need challenging treatment modalities that focus on improving the position of the maxilla. Tongue plate appliance is an intraoral device that has shown promising results in the treatment of growing patients with maxillary deficiency. Nonetheless, the effects of tongue plate on patients with cleft lip and cleft palate have not been evaluated yet. This study aimed to assess the effects of tongue plate on growing patients with cleft lip and palate.<br> <strong>Materials and methods:</strong> Twenty-four growing patients (12 girls and 12 boys) with non-syndromic unilateral cleft lip and cleft palate between the ages of 6-12 years volunteered to participate in this quasi-experiment. All the patients had undergone the preliminary stages of lip and palate closure during infancy, but none of them had received bone grafts. They were treated with tongue plate appliance for 18&plusmn;3 months. Lateral cephalograms were obtained and were analyzed at the beginning and at the end of the treatment. Paired t-test was used for statistical analysis of normally-distributed data; otherwise, Wilcoxon test was used.<br> <strong>Results:</strong> Paired t-test showed that the Sella-Nasion-Point A (SNA) angle was increased from 76.3&plusmn;0.2 to 77.3&plusmn;0.14 degrees, and the Point A-Nasion-Point B (ANB) angle was enhanced from -2.26&plusmn;0.17 to 0.93&plusmn;0.82 degrees (P<0.001).<br> <strong>Conclusion:</strong> Tongue plate appliance has shown favorable results in the treatment of class 3 malocclusion and maxillary deficiency in growing patients with cleft lip and cleft palate.<br> &nbsp;</p> شکاف لب, شکاف کام, کمبود رشد ماگزیلا, تانگ پلیت Cleft lip, Cleft palate, Growth, maxillary deficiency, tongue plate 36 42 http://jrdms.dentaliau.ac.ir/browse.php?a_code=A-10-293-18&slc_lang=en&sid=1 S Eslami sara.eslami.sh@gmail.com 10031947532846009877 10031947532846009877 No Postgraduate Student, Orthodontics Dept,Dental Branch of Tehran, Islamic Azad University, Tehran, Iran. R Showkatbakhsh showkatbakhsh@gmail.com 10031947532846009878 10031947532846009878 No Professor, Orthodontics Dept,Dentistry Faculty,Shahid Beheshti University of Medical Sciences, Tehran, Iran M Narimani Anarimani@yahoo.com 10031947532846009879 10031947532846009879 No Associate Professor, Orthodontics Dept, Member of Craniomaxillofacial Research Center, Dental Branch of Tehran Z Kamalee zkamalee@yahoo.com 10031947532846009880 10031947532846009880 No MSc National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran A Jamilian info@jamilian.net 10031947532846009881 10031947532846009881 Yes Professor, Fellow of Orthognathic Surgery, Orthodontics Dept, Member of Craniomaxillofacial Research Center, Dental Branch of Tehran, Islamic Azad University, Tehran, Iran.