ABSTRACT Objective: To review the literature unprecedentedly to identify the dentistry students' knowledge of pediatric patients who suffered violence. Material and Methods: A systematic review was conducted using PubMed, Web of Science, LILACS, SciELO, Google Scholar, and OpenGrey electronic databases up to November 2021. The "Grey Literature" was verified through Google Scholar and Open Grey searches to avoid any selection bias. There was no restriction on the date of publication or language. Results: The systematic search yielded 2.756 studies in the first selection phase, but only twenty-two articles were included. All selected articles were published between 1998 and 2021 and used a questionnaire to evaluate the dentistry students' knowledge regarding child maltreatment cases. Brazil was the country that had the most studies included (10 articles). Despite the majority of the students presenting insufficient knowledge about child maltreatment, evidence from this research showed that every form of approach by professionals toward child maltreatment should be considered important. Conclusion: Therefore, there are deficiencies regarding the teaching-learning methodology, reinforcing the need for improvements in Dentistry undergraduate curricula. Objective violence Methods PubMed Science LILACS SciELO Literature bias language Results 2756 2 756 2.75 phase twentytwo twenty two 199 202 cases 10 (1 articles. . articles) important Conclusion Therefore teachinglearning teaching learning methodology curricula 275 75 2.7 19 20 1 ( 27 7 2.

Aim This study aimed to investigate the prevalence of physical violence and head and neck injuries among children and adolescents who suffered physical aggression, firearm aggression, and white gun aggression referred to the Legal Medical Department in a southern city in Brazil. Methods This study was performed at Legal Medical Department in the city of Pelotas, RS, Brazil, from January 2011 to December of 2015. Data were collected from medical reports of children and adolescents (0-19 years old). Demographic information such as sex, age, and skin color was collected. Data were submitted to Chi-square test and multivariate Poisson regression analysis. Results In this study, 2,716 physical examination reports were analyzed, with a total of 2,171 exams resulting from violence; lesions that had physical aggression as their etiology (1,951) had a higher prevalence. The analysis of the exams revealed that the majority were adolescents (90,05%), white (84.09%), and female (50.21%). The head and neck regions were affected in most cases of violence (57.90%). In the adjusted model, the occurrence of injuries in the head and neck region was higher in males (PR 1.16, CI 95% 1.08 - 1.25), among adolescents (PR 1.28, CI 95% 1.10 - 1.48) and in victims of physical aggression compared to victims of the firearm (2.81, CI 95% 1.79 - 4.40). Conclusion The results revealed a high prevalence of head and face injuries in victims of violence and that there was a greater prevalence of physical violence among adolescents compared to children and males. Brazil Pelotas RS 201 2015 019 0 19 (0-1 old. old . old) sex age Chisquare Chi square 2716 2 716 2,71 analyzed 2171 171 2,17 1,951 1951 1 951 (1,951 90,05%, 9005 90,05% , 90 05 (90,05%) 84.09%, 8409 84.09% 84 09 (84.09%) 50.21%. 5021 50.21% 50 21 (50.21%) 57.90%. 5790 57.90% 57 (57.90%) model PR 116 16 1.16 95 108 08 1.0 1.25, 125 1.25 25 1.25) 128 28 1.28 110 10 1.1 1.48 148 48 2.81, 281 81 (2.81 179 79 1.7 4.40. 440 4.40 4 40 4.40) 20 01 (0- 271 71 2,7 217 17 2,1 1,95 195 (1,95 900 90,05 9 (90,05% 840 84.09 8 (84.09% 502 50.21 5 (50.21% 579 57.90 (57.90% 11 1. 12 1.2 1.4 14 2.81 (2.8 7 44 4.4 (0 27 2, 1,9 (1,9 90,0 (90,05 84.0 (84.09 50.2 (50.21 57.9 (57.90 2.8 (2. 4. ( 1, (1, 90, (90,0 84. (84.0 50. (50.2 57. (57.9 2. (2 (1 (90, (84. (50. (57. (90 (84 (50 (57 (9 (8 (5

Abstract The objective of this study was to evaluate the biocompatibility and mechanical properties of two commercially available and one experimental periodontal dressing materials. The cytotoxicity of Periobond ® , Barricaid ® and one experimental periodontal dressing based on Exothane ® 8 monomer was tested on 3T3/NIH mouse fibroblast. Genotoxicity was assessed by micronuclei formation, and cell alterations were analyzed using light microscopy. Both biological assays were performed using the eluate obtained from specimens after 24, 72, or 168 hours of incubation. Mechanical characterization was assessed through the ultimate tensile strength and the water sorption and solubility tests. The significance level of α = 0.05 was used for all statistical analyses. All the materials promoted a cell viability lower than 60% in all evaluated times. In general, the cell viability was significantly reduced after 72 and 168h of specimens’ incubation. Considering the factor material, there were not statistical differences in the cell viability (p = 0.156). The genotoxicity was not statistically significant among the groups in the different periods of time (p > 0.05). Differences in the ultimate tensile strength values were not statistically significant different among the groups (p = 0.125). Periobond ® showed the higher water sorption values (p < 0.001). Regarding solubility, there were no statistical differences between the groups (p = 0.098). All the periodontal dressing materials evaluated in this study exerted a cytotoxic effect against mouse fibroblasts, and their toxicity became more evident over time. Among the materials evaluated, the experimental light-cure type has shown overall similar properties to the commercial references.

AIM: To identify the predominant causes and types of maxillofacial trauma in Brazil. METHODS: Reports of corporal trauma (7,536) between 2009-2010 in the Brazilian Institute of Forensic Medicine were analyzed as to the presence of maxillofacial traumas. Victims' demographic and trauma characteristics were recorded. RESULTS: Data were submitted to chi-square test and to multivariate Poisson regression. 778 reports referred maxillofacial trauma. Most victims were men (50.8%) around 27.6 years. Main causes were physical aggression (88.1%) and traffic accidents (6.7%). The most affected extraoral area was the middle third (60.7%). Risk for trauma in the middle third was significantly higher among patients aged 61-75 (RR 1.32), and non-white patients (black-skinned RR 1.21; brown-skinned RR 1.18); while falls were associated with trauma in the lower third (RR1.79). CONCLUSIONS: Violence was the main cause of maxillofacial trauma. Prevention of interpersonal violence may be a key element to prevent maxillofacial trauma.