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The First World War was and is considered the most terrible conflagration of all time. Thus, over 65,000,000 soldiers made up the corps of land armies, naval and air forces, combat armies that participated in the conduct of military operations during the First World War. About 8,500,000 people died and more than 21,000,000 were injured. France was one of the countries most affected by this war, its medical services, including dentistry and oral and maxillofacial surgery, being completely obsolete. Thus, in this material, we tried to describe some important figures of French oral and maxillofacial dentistry and surgery, which were active in French civil and military hospitals during the First World War (1914-1918).

Sedentary behavior, both professional, occupational, and leisure, recreational, is one of the major risk factors for cardio-metabolic health and premature mortality. But, we find this sedentary behavior in many of the existing professional activities in 2021, among which are the professional activities with a medical profile in the field of dentistry: specific activities of the dental office (and here we discuss dentists and dental nurses) and activities specific to the dental technique laboratory (in this case, we are talking about dental technicians).

Edward Hartley Angle was an eminent American scientist, dentist, great inventor, being rightly considered to be the father of modern orthodontics. The great American scientist was the author of an impressive number of patents (46) and was the coordinator of 7 editions of some impressive orthodontic treatises. Thus, in this material, important data from the biography of Dr. Edward Hartley Angle.

Introduction. Peri-implantitis is a condition of the tissues adjacent to dental implants, which can occur in patients with implant-prosthetic restorations, following inadequate prophylactic measures. However, these peri-implants, untreated or improperly treated, can lead over time to quite severe complications, which can quickly turn into emergencies of low, medium or increased intensity in the usual dental care. Purpose. Peri-implantitis is not a major dental emergency, but ignoring and/or treating it incorrectly can lead to complications that are considered major in dentistry. That is why we tried through this study to verify the knowledge related to peri-implantitis as well as the complications that may arise from the nontreatment of these diseases, among the practitioners involved in this field. Material and method. The study was conducted with the help of 37 specialists involved in implantprosthetic treatments, aged between 37 and 53 years, using a 7-point questionnaire. Results and discussions. The results show the concern of specialists in the field of oral implantology regarding peri-implantitis, as well as the complications arising from them. Conclusions. Knowing the causes but also the complications arising from peri-implantitis are very important for the creating preventive programs, which with a reduced effort bring the long-term success of implant supported restorations.

Background: During the last two years, the COVID-19 pandemic led to millions of disease-related deaths worldwide. The efforts of the scientific community facing this global challenge resulted in outstanding achievements. Thus, within one year, new mRNA-based vaccines against SARS-CoV-2 viral infection were released, providing highly efficient protection and showing a very good safety profile in the general population. However, clinical data collection after vaccination is a continuous process for the long-term safety of any new medical product. The aim of our paper is to present two cases of hematological malignancies: diffuse large B-cell non-Hodgkin lymphoma and T/NK-cell lymphoma, diagnosed shortly after the administration of the mRNA COVID-19 vaccine. Methods and Results: Case 1: A female patient was admitted with a suspicious cervical mass that emerged within one week after the administration of second dose of the BNT162b2 COVID-19 vaccine. Surgical removal followed by pathology assessment of the specimen confirmed the diagnosis of diffuse large B-cell non-Hodgkin lymphoma. Case 2: A male patient was admitted with multiple ulcerative oral lesions arising on the third day after the initial dose of the BNT162b2 COVID-19 vaccine. These lesions had a progressive character and during the following months were complicated with repetitive episodes of heavy oral bleeding, requiring blood transfusions. The incisional biopsy of the lesions and pathological assessment of the specimens confirmed the diagnosis of T/NK-cell lymphoma. Conclusions: The safety profile of the mRNA-based vaccines is an undeniable fact. In most cases, suspicions of potentially aggressive side effects were ruled out, proving to be transient post-vaccine reactions. Clinicians should remain alert to report any potentially aggressive manifestations emerging in the context of mRNA COVID-19 vaccination, such as these cases of hematological malignancies, in order to promote additional investigations on the particular mechanisms of action of COVID-19 vaccines and to provide the best medical care to the patients.