Odontogenic tumors occurred more frequently in females, in the second and third decades of life, and more commonly in the mandible; most cases were asymptomatic.

The purpose of this study was to determine the prevalence of odontogenic cysts at the Pernambuco School of Dentistry - Universidade de Pernambuco (Brazil) and compare this prevalence with other international studies. Data for the study were obtained from reports of patients diagnosed with odontogenic cysts between 1992 and 2007. Case records of patients who fit the Histological Classification of the World Health Organization (2005) were included. The following variables were analyzed: gender, age group, anatomical location, histological type and ethnic background. Odontogenic cysts accounted for 9.94% of all lesions biopsied throughout the study period. Mean patient age was 28.9 years and 57.6% of the patients were males (P > 0.05). Radicular cyst was the most prevalent histological type (52.2%), followed by dentigerous cyst (30.7%). Regarding ethnic background, 41.8 % of the patients were of African descent, followed by Caucasians and other ethnic groups (P > 0.05). The mandible was the most prevalent site of the lesions (56%). Odontogenic cysts appear to have a distinct predilection for the male gender, the second and third decades of life (P < 0.05) and are more frequent in the mandible. The removal of odontogenic keratocysts from the new WHO classification has not altered the order of the most prevalent cysts in the maxillofacial complex.

Both the oral administration and local injection of dexamethasone proved effective in reducing pain, edema, and trismus compared to control group following lower third molar surgeries, achieving similar results.

Background Social isolation is ongoing worldwide with the aim to stem the spread of the novel coronavirus SARS‐CoV‐2 responsible for the COVID‐19 pandemic. However, social isolation leads to significant psycho‐emotional changes. This study aimed to assess the effect of distance education (DE) activities implemented due to social isolation, on the quality of life of undergraduate dentistry students. Method An e ‐questionnaire (Google Forms®) was administered to identify specific DE activities after social isolation and included the World Health Organization Quality of Life (WHOQOL)‐bref questionnaire. The e ‐questionnaire was sent 14 days after the initiation of social isolation, remaining available for 48h. Cronbach’s alpha and the means of the quality of life domains were calculated and analyzed using the Friedman/Dunn and Spearman’s correlation tests. After ranking, Chi‐squared and Fisher’s exact tests plus multinomial‐logistic‐regression were performed (SPSS, p<0.05). Result There was an excellent internal consistency of WHOQOL‐bref (α=0.916), and the mean quality of life (0‐100) was 70.66±12.61. The psychological domain was the most affected (p<0.001). The social domain exhibited the weakest correlation with overall quality of life (p<0.001, r=0.688). The use of the Internet, cell phones, and streaming media increased, although all students had DE activities. In the multivariate analysis, attending virtual meetings (p=0.028) and performing DE activities in an office/study room (p=0.034) were significantly associated with good quality of life. Conclusion Facing social isolation never previously experienced by this generation, undergraduate dentistry students are at risk of reduced quality of life. Therefore, performing DE activities through devices with teacher‐student interaction is a key coping tool.

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In orthognathic surgery, Le Fort I osteotomy is one of the most often used methods for the correction of dental-facial deformities and is considered technically safe. However, this procedure may lead to diverse complications, including uncommon vascular complications. A clinical case is described of late development of pseudoaneurysm in one of the branches of the maxillary artery in a 20-year-old patient who had undergone Le Fort I osteotomy, bilateral sagittal osteotomy of mandibular branch, and mentoplasty and subsequently treated with embolization. The main forms of treating vascular injuries are reviewed, and embolization is demonstrated to be a technically safe procedure with few complications.

These OTs are uncommon lesions in world population, and malignant OTs are very rare. The relative frequency of different kinds of OTs, the age, and the sex distribution show a marked geographic variation in incidence of those lesions. This was particularly notable in the ameloblastomas and odontoma, with the incidences being relatively well and weighted showing similar values to an average when compared with previous studies.

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