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Objective: To convey the applications of online education in the field of maxillofacial radiology, which is widely used in the world during the COVID- 19 pandemic, and the post-pandemic education and training models suggestions in accordance with the changing world order by compiling the research results and literature information on the subject. Method: Different educational models applied in maxillofacial radiology before and during the COVID-19 pandemic were evaluated in terms of their results and activities by looking into published articles. In the light of these data, regulations, and recommendations were developed for post-pandemic educational activities. Findings: During the COVID-19 pandemic, the disruptions in educational activities at all levels and fields all over the world were reflected in maxillofacial radiology education. However, studies show that learning with online education in this field, especially in the interpretation of radiological images and problem-based learning activities, is at least as successful as or more than traditional education models. Online education also provides feedback to lecturers and promotes active learning, considered best practices for the teaching-learning process. During the COVID-19 pandemic period, theoretical education has been tried to be continued in the form of online education, although various some studies showed that online education is insufficient in practical education. In radiological interpretation, it is one of the biggest problems to ensure students' attention and effective participation in practical terms. In addition, online teaching of radiographic techniques and applications may not be as effective as instructive teaching techniques. After the pandemic, it is predicted that returning to normal maxillofacial radiology education will be challenging in both theoretical and practical aspects and there will is be a need to change. Results: Considering the strengths and weaknesses of online education models, whose application area has increased so much during the COVID-19 pandemic. The development and implementation of new, effective education-training models suitable both for the conditions and for everyone involved in education for the post-pandemic period, emerges as a necessity. After the pandemic, it is important to evaluate the blended education model in theoretical education, to make various changes in maxillofacial radiology practical training and to re-determine the rules of hygiene, separation and education.

Myopericytoma (MPC) is defined as a benign mesenchymal neoplasm consisting mostly of oval spindle-shaped myoid-like cells with perivascular growth. Apart from being a rare lesion in all anatomical regions of the body, it is extremely rare in the oral and maxillofacial region and only a limited number of cases have been reported in the literature. We present here the case of MPC in a 42-year-old female patient who had a painless, enlarging lesion in the anterior mandible. Intraoral examination of the lesion revealed a smooth, nonwhite, pedunculated, fibrotic, painless, and nonbleeding lesion in the lingual aspect of the anterior mandible. Histopathologic examination revealed a tumor consisting of spherical/nodular structures composed of spindle cells and hemangioperistomatous vascular structures in the form of staghorn. These tumor cells showed no signs of malignancy. On immunohistochemical examination, the tumor cells were positive for CD34 and SMA. SMA Protein was also focally positive in nodular structures formed by spindle cells and tumor stroma. S-100 protein was negative in the lesion. To our knowledge, this is the second case of MPC that occurred in the mandibular gingiva.

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Pigmentation of the oral mucosa occurs when one or more pigments accumulate in the mucosa and cause discoloration. 1 Oral pigmented lesions can occur in a variety of clinical conditions, from physiologic pigmentation to malignant melanoma. 2 The color of the pigmentation depends on the depth of the pigment in the mucosa. The color can be seen in various shades from brown to blue or black. 1,3,4 In addition to melanotic macules, solitary pigmented lesions of melanocytic origin (melanoacanthoma, melanoma, oral melanocytic nevus) are rarely seen in the oral mucosa. 5 Oral melanocytic nevi are benign neoplasms composed of cells of the neural crest, often referred to as nevus cells. 6 A melanocytic nevus is a focal proliferation of nevus cells that may be congenital or acquired. These lesions are typically found on the skin but rarely on the oral mucosa. 5 Their etiology and pathogenesis are not fully understood. 7 They are examined histopathologically in 3 stages: First, a junctional nevus, which is the proliferation of nevus melanocytes throughout the submucosal-mucosal junction; second, a compound nevus, which involves migration of nevus cells into the underlying mesenchymal tissue, and third, a subepithelial or intramucosal nevus, which involves loss of the submucosal-mucosal junction so that all remaining