en رادیولوژی دهان فک صورت Oral & Maxillofacial Radiology پژوهشي Research <div style="text-align: justify;"><span style="font-size:12px;"><span style="line-height:200%"><span calibri=""><b><span style="line-height:200%"><span new="" roman="" times="">Background</span></span></b><b><span lang="EN"><span style="line-height:200%"><span new="" roman="" times="">:</span></span></span></b><span lang="EN"><span style="line-height:200%"><span new="" roman="" times=""> One of the influential factors in the reduction of available bone for implant placement is the pneumatization of the maxillary sinus due to the absence of teeth. This study aimed to investigate the effect of edentulism on maxillary sinus pneumatization using </span></span></span><span calibri="" lang="EN">cone-beam computed tomography</span><span lang="EN"><span style="line-height:200%"><span new="" roman="" times="">.</span></span></span></span></span><br> <span style="line-height:200%"><span calibri=""><b><span lang="EN"><span style="line-height:200%"><span new="" roman="" times="">Materials and Methods:</span></span></span></b><span lang="EN"><span style="line-height:200%"><span new="" roman="" times=""> This cross-sectional, retrospective study examined 114 CBCT images of the maxilla, where one side exhibited at least one edentulous area that had been toothless for a minimum of six months or had a fully healed alveolar ridge, while the other side was dentate. The coronal sections from the edentulous and dentate sides at the second premolar, first molar, or second molar regions were analyzed to assess the depth of the maxillary sinus on each side. Data were analyzed using a paired t-test and </span></span></span><span style="line-height:200%"><span new="" roman="" times="">one-way </span></span><span lang="EN"><span style="line-height:200%"><span new="" roman="" times="">ANOVA (&alpha; = 0.05)</span></span></span></span></span><br> <span style="line-height:200%"><span calibri=""><b><span lang="EN"><span style="line-height:200%"><span new="" roman="" times="">Results:</span></span></span></b><span lang="EN"><span style="line-height:200%"><span new="" roman="" times=""> A significant difference was found between the depth of the maxillary sinus in areas with and without teeth (p < 0.001). The depth of the maxillary sinus between the regions with and without teeth showed significant differences in the second premolar (p = 0.01), first molar (p = 0.021), and second molar (p = 0.046) regions. Significant differences were observed in the depth of the sinus on the edentulous side compared to the dentate side for both females (p < 0.001) and males (p = 0.024).</span></span></span></span></span><br> <span style="line-height:200%"><span calibri=""><b><span lang="EN"><span style="line-height:200%"><span new="" roman="" times="">Conclusion:</span></span></span></b><span lang="EN"><span style="line-height:200%"><span new="" roman="" times=""> Although tooth loss was statistically associated with increased maxillary sinus pneumatization, the magnitude of this change was minimal and not clinically significant. </span></span></span></span></span></span></div> &nbsp; 1 7 http://cofs.khuisf.ac.ir/browse.php?a_code=A-10-1-75&slc_lang=en&sid=1 Hamid Asadi 10031947532846001191 10031947532846001191 No Faculty of Dentistry, Isf.c, Islamic Azad University, Isfahan, Iran Azar Eslami Manoochehri 10031947532846001192 10031947532846001192 Yes Department of Oral & Maxillofacial Radiology, Faculty of Dentistry, Isf.c, Islamic Azad University, Isfahan, Iran Ehsan Rafiei 10031947532846001193 10031947532846001193 No Department of periodontics, Faculty of Dentistry, Isf.c, Islamic Azad University, Isfahan, Iran