en دهان و دندان Oral and Maxillofacial پژوهشي Research <div style="text-align: justify;"><span style="font-family:Tahoma;"><span style="font-size:12px;"><span style="background:white"><b><span lang="EN-GB"><span style="color:black">Introduction:</span></span></b><span lang="EN-GB"><span style="color:black"> Teeth, especially anterior teeth, play a vital role in beauty, nutrition, chewing, social communication, and evolution in children. A total of 5% of the damage to the teeth follows the trauma and damage to different areas of the body due to severe collisions and accidents. This study investigated the dental trauma prevalence and its risk factors in 7-12-year-old children in Birjand, Iran, in 2021.</span><span style="font-family:"Calibri",sans-serif"></span></span></span><br> <span style="background:white"><b><span lang="EN-GB"><span style="color:black">Methods:</span></span></b><span lang="EN-GB"><span style="color:black"> This cross-sectional study was conducted in Birjand on 7-12-year-old schoolchildren in 2021. The student&#39;s examination was performed in the classroom during the morning shift with mirrors, probes, and headlights. The fracture type, the injured tooth number, the amount of the overjet, the overbite, and the lip cover were recorded in the relevant checklist. Data were analysed using SPSS 26 and the Chi-square and Fisher&#39;s exact test at the significance level of </span></span><span lang="EN-GB"><span style="color:black">&alpha;</span></span><span lang="EN-GB"><span style="color:black">=0.05.</span><span style="font-family:"Calibri",sans-serif"></span></span></span><br> <span style="background:white"><b><span lang="EN-GB"><span style="color:black">Results:</span></span></b><span lang="EN-GB"><span style="color:black"> The 699 children with an average age of 9.33&plusmn;1.69 years participated in this study. The prevalence of dental trauma was 6.3% in the entire sample. Dental fracture damage was the most common type of trauma (39 (92.9%)), and the types of fractures and the trauma area were not significant in terms of </span></span><span lang="EN-GB"><span style="color:black">gender (P=0.5), location</span></span><b> </b><span style="color:black"><span style="letter-spacing:-.2pt">place of residence</span></span><span lang="EN-GB"><span style="color:black"> (P=0.8), and age range (P=0.06). The mean scores of overjet and overbite in children were 2.18&plusmn;1.60 and 2.68&plusmn;1.44, respectively. The prevalence of traumatic injuries in children with normal overjet was less than in others (487 (94.6%)). Maxillary central teeth were mostly affected by trauma, and enamel fractures were the most dental trauma in children.</span><span style="font-family:"Calibri",sans-serif"></span></span></span><br> <span style="background:white"><b><span lang="EN-GB"><span style="color:black">Conclusion:</span></span></b><span lang="EN-GB"><span style="color:black"> The present study, in line with other similar studies, showed that the most important factors affecting the tooth were lip coverage and overjet, and the maxillary central teeth were more exposed to trauma than other teeth.</span></span></span></span></span></div> Children, Dental trauma, Risk factors 137 142 http://jsurgery.bums.ac.ir/browse.php?a_code=A-10-367-1&slc_lang=en&sid=1 Rahim Ghasemi rghasemitm@gmail.com 100319475328460011220 0009-0007-0820-5229 No Dentist, Birjand University of Medical Sciences, Birjand, Iran Shima bijari shima.bijari223@gmail.com 100319475328460011221 100319475328460011221 Yes Department of Endodontics, Dental Clinical Research Development Unit, Birjand University of Medical Sciences, Birjand, Iran Elaheh Allahyari elaheh.allahyari@gmail.com 100319475328460011222 100319475328460011222 No Department of Epidemiology and Biostatistics, School of Health, Birjand University of Medical Sciences, Birjand, Iran Sediqe Ebrahimipur sdent22@gmail.com 100319475328460011223 100319475328460011223 No Department of Endodontics, Dental Clinical Research Development Unit, Birjand University of Medical Sciences, Birjand, Iran