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Background: Medical smartphone applications have rendered positive results in daily practice and also serve as potentially valuable educational tools. In orthopedics, radiograph analysis and angle measurements comprise an essential mechanism in the diagnosis, treatment, planning, and evaluation of the results in orthopedic surgery. Purpose: Thus, the present study aimed to evaluate an application for mobile devices for orthopedic doctors and orthopedic residents. The application proposes the analysis and interpretation of radiographic imaging examinations through assessments and angle measurements. In this survey, we analyzed the parameter usability and usefulness of a mobile application for the iOS system, in addition to conducting its validation. Patients and Methods: The application was tested by 26 volunteers: 13 orthopedists and 13 orthopedic residents. Results: After applying the System Utility Score (SUS) questionnaire, which assesses the usability of an application, a score of 84.5 was obtained, a value that represents an A+ rating on the Sauro and Lewis scale. There was no statistically significant difference when comparing the SUS between the orthopedic residents and orthopedists. According to the usefulness perception analysis, 90% of the residents responded positively to the questions, while among orthopedists, the percentage was 75%, denoting a statistically significant difference (p = 0.002). Subsequently, the application underwent validation to assess whether the calculated angle measurements were reliable when compared with those obtained using the goniometer. No significant differences were observed when comparing the angles measured by the two evaluated methods. Conclusion/Clinical Relevance: In conclusion, the developed application can reliably contribute to the measurement of angles in radiographs, assisting in therapeutic decision-making, and may be used as an instrument to promote the teaching and learning processes in orthopedics.

Objective: This review clusters the growing field of nano-based platforms for antimicrobial photodynamic therapy (aPDT) targeting pathogenic oral biofilms and increase interactions between dental researchers and investigators in many related fields. Background data: Clinically relevant disinfection of dental tissues is difficult to achieve with aPDT alone. It has been found that limited penetrability into soft and hard dental tissues, diffusion of the photosensitizers, and the small light absorption coefficient are contributing factors. As a result, the effectiveness of aPDT is reduced in vivo applications. To overcome limitations, nanotechnology has been implied to enhance the penetration and delivery of photosensitizers to target microorganisms and increase the bactericidal effect. Materials and methods: The current literature was screened for the various platforms composed of photosensitizers functionalized with nanoparticles and their enhanced performance against oral pathogenic biofilms. Results: The evidence-based findings from the up-to-date literature were promising to control the onset and the progression of dental biofilm-triggered diseases such as dental caries, endodontic infections, and periodontal diseases. The antimicrobial effects of aPDT with nano-based platforms on oral bacterial disinfection will help to advance the design of combination strategies that increase the rate of complete and durable clinical response in oral infections. Conclusions: There is enthusiasm about the potential of nano-based platforms to treat currently out of the reach pathogenic oral biofilms. Much of the potential exists because these nano-based platforms use unique mechanisms of action that allow us to overcome the challenging of intra-oral and hard-tissue disinfection.

Background: Dental caries comprises the most prevalent chronic disease in children worldwide and is considered a public health problem. Introduction: Few educational oral health applications, directed to the preschool public, are available. The present study aimed at developing an educational game in application format for mobile devices and tested its usability. Materials and Methods: Forty-three children were randomly selected to participate in the study. The methodology used in the development of the application was based on an interactive children's book flux design. The application was elaborated for the Android ™ and iOS ™ platforms. To evaluate usability, a test method composed of observation and interview surveying was used, and the measuring mechanism consisted of the User's Success Rate. The sample ( N  = 43) was randomly composed of preschool students (3-5 years of age) from a public school in Brazil. Results: In the effectiveness tests, the success rates of the Story and Game Menus were 97.6% and 85.3%, respectively. In the efficiency tests, the respective rates were 80.2% and 82.1%. The satisfaction evaluation rate was 99.7%. Discussion: The game "Put the healthy food into the mouth" showed to be difficult in utilization due to the children's lack of knowledge concerning healthy foods ( p < 0.001 and 95% confidence interval). Three year olds demonstrated a greater requirement for assistance during navigation. Conclusions: The application was successful regarding the following three assessed attributes: (1) effectiveness, (2) efficiency, and (3) satisfaction. However, dietary education was observed to be necessary for the children and their guardians.