Objective To evaluate the influence of a midline diastema on dentofacial esthetic perceptions of orthodontists, restorative dental specialists or prosthodontists, and laypersons in a frontal facial evaluation performed by means of video. Materials and Methods Two individuals aged between 20 and 25 years, one of each gender, with presence of a midline diastema were selected. An acrylic resin mockup was made of the maxillary anterior region, simulating ideal conditions of smile esthetics. Four standardized frontal view videos of the complete face were filmed of each individual in the following situations: with the ideal smile (unchanged mockup) and with the presence of midline diastemas of 0.5, 1.0, and 1.5 mm created by the mockup. In all videos, the patient said a certain sentence and, at the end, simulated a posed smile. Dentofacial esthetic perceptions of all four videos of each individual were evaluated by 51 orthodontists, 51 restorative dental specialists or prosthodontists, and 51 laypersons by means of visual analog scales. Data were evaluated using analysis of variance and Tukey post hoc test, with the level of significance set at 5%. Results The most attractive videos for all groups of examiners were those without diastema and with a diastema of 0.5 mm, for both the woman and the man. For a diastema of 1 mm or 1.5 mm, the dentofacial characteristics were considered unesthetic. Conclusions Diastemas equal to or greater than 1 mm negatively influence dentofacial esthetics in a frontal facial evaluation performed by means of video.

Introduction: The ozone therapy is a bio-oxidation therapy, based on a gaseous mixture with oxygen and ozone. It can be considered an alternative therapeutic tool the treat- ment of many systemic and locals diseases. It induces acute oxygenation stress and is not deleterious, which allows the restoration of oxidation and reduction balance. Within the therapeutic effects, it has been associated to the improvement metabolism and the peripheral tissue oxygenation. In addition, ozone is an important antimicrobial agent against bacteria, fungi, protozoa and viruses. In Dentistry, the ozone therapy has been used in several clinical situations due to its mechanisms of action. Objectives: The pur- pose of this literature review is to discuss the chemical and physical properties of ozone and its mechanisms of action in tissue repair. Methods: It is a narrative review based on research articles searched in Pubmed and LILACS database, from December 2015 to May 2016. The following descriptors in English: “ozone”, “oxidative stress” and “tissue repair” used. Finally, 36 articles were included in this narrative literature review. Results and Conclusion: The use of ozone as treatment seems to be promising in health areas, including dentistry due to its biological and biochemical properties. However, there is a need for more methodologically adequate studies so it can be safely and efficiently applied.

Introduction Among the therapeutic effects of ozone therapy, improvement in cell metabolism and peripheral tissue oxygenation have been highlighted. Objective to evaluate the systemic effect of bio-oxidative therapy with ozone gas on wound healing. Material and method Tissue lesions with a circumference of 1.0 cm were induced in the skin on the back of 24 male Wistar rats. The animals were randomly divided into two groups: 1) Group C (control; n=12): with simulation of the application of ozone gas via the rectum and, 2) Group O3 (test; n=12): with application of ozone gas by means of rectal insufflation at a concentration of 50 µg/mL. The animals were euthanized at seven and 15 days, and samples were removed, fixed in formalin, and submitted to macroscopic, histological, and histometric analyses. Result The animals in the O3 group presented mixed inflammation at seven days, which translated into an absence of inflammation at 15 days. The C group exhibited acute inflammation on the 7th day, translating to chronic inflammation, which significantly increased from the 7th to the 15th day. The findings showed that the O3 group presented greater wound contraction (P<0.05) and a greater degree of neovascularization on the 7th day (P<0.05) when compared to group C. On the 15th day, both groups (O3 and C) showed complete re-epithelialization, however, the O3 group demonstrated complete muscle regeneration. Conclusion The systemic ozone therapy had a biomodulatory effect, reducing the characteristics of acute inflammation and increasing tissue repair and regeneration in rat skin.

In health, the prognosis is linked to an accurate diagnosis. However, in a diagnostic imaging exam, often the subjectivity of signs/symptoms, associated with the overlapping of anatomical structures or the presence of image artifacts, hindering the accuracy of diagnoses and procedures. For centuries, has been known that excess of heat or cold has been associated with dysfunction or disease. An infrared term consists of a functional diagnostic method for imaging that allows inferring an organ/tissue dysfunction using temperature. It is based on recording differences in body temperature and detecting patterns of thermal asymmetry in contralateral regions of the body. In this context, this study aims to perform a narrative review updated about the applicability of infrared thermography in Dentistry. Studies regarding the use of infrared thermography in dentistry from 1956 to 2019 were considered eligible. No current panorama, which principles such as: sustainability, effectiveness, health promotion and disease prevention, perform as world health guidelines, this study corroborates with the conception that an insertion of the thermographic exam in Dentistry that can favor early diagnoses of dysfunctions/pathologies, allowing a better direction for other exams and contributions for the choice of more assertive therapies. Thus, although an infrared term still has an incipient literature and a questionable accurate, the use of this auxiliary method of analysis is very promising in Dentistry and in several other areas of health and knowledge.Thermography. Diagnostic imaging. Mouth diseases. Temporomandibular joint disorders.