Prosthetic Management of Tooth Malposition

Tooth malposition can negatively affect the appearance of a person’s smile. In these cases, it is essential to conduct a comprehensive clinical and radiological examination to determine the type and extent of the tooth malposition before selecting the appropriate treatment option. Orthodontic treatment is generally used to correct mild to severe malocclusions. In cases where the tooth malposition is associated with other dental issues such as tooth discoloration, ceramic restorations may be a suitable alternative

Adsorption, Modeling, Thermodynamic, and Kinetic Studies of Methyl Red Removal from Textile-Polluted Water Using Natural and Purified Organic Matter Rich Clays as Low-Cost Adsorbent

Clay minerals have large surface areas that contribute to their high adsorption capacity. Pure clays were often used. However, their prices remain expensive. However, the natural clay minerals that are locally available can have economic and environmental benefits for textile wastewater treatment. The tested natural clays had given low removal yields. Therefore, we wanted to test particular rich organic matter clay for adsorbing azo dye, which is a very toxic molecule. In order to make the use of this clay type have a better efficiency for removal of this dye from the polluted waters, the optimal conditions had been specified. The results indicated that advised conditions were as follows: 5 min was the contact time of dye-clay; the better adsorbent masses were 0.25 g and 0.5 g per 100 ml solution for raw (ANb) and purified clays (ANp), respectively; the initial dye concentrations were 1 gL−1 for raw clay and 50 mgL−1 for purified clay; pH solution had any effect on the yield of dye removal only when raw clay was used; however, acid environment was advised when purified clay was the adsorbent and for the two tested clays about 20–30°C was the better solution temperature. X-Ray diffraction, Fourier transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM) analysis confirmed that functional groups of clay adsorbed the dye. Langmuir maximum adsorption capacities of ANb and ANp were found to be 397 mgg−1 and 132.3 mgg−1 at pH 7 and 5, respectively. Raw and chemically activated samples gave similar results. Adsorption of ANb and ANp data showed better agreement with the pseudo-second-order kinetic model. Thermodynamic parameters of the two adsorbents confirmed that the adsorption was endothermic (ΔH > 0) and spontaneous (ΔG0 < 0). Energy level was high when purified clay was used; however, it was significantly lower when the adsorbent was raw clay. Therefore, it was likely that adsorption by carbonates and organic matter involved small energy amounts. Comparing between these and other previous results, Jebel Louka natural clay type is better recommended for MR removal from textile wastewater, since the removal yield was about 98%. Hence, this tested clay type could provide an alternative low-cost material that could be used in treatment of the textile wastewater rich in MR and the obtained adsorption model and desorption tests provided a background for pilot and industrial scale applications

Evaluation de l’intérêt des technologies de l’information et de la communication éducatives dans l’apprentissage par les étudiants en Médecine Dentaire

Résumé Objectif- Evaluer l’intérêt de l’utilisation des technologies de l’information et de la communication éducatives dans la formation des étudiants à la Faculté de Médecine Dentaire de Monastir. Matériels et méthodes- Il s’agissait d’une étude descriptive menée auprès des appre­nants en sixième année. Les données ont été collectées par un questionnaire, composé de quatre parties et mis en ligne en 2022 sur les pages Facebook de la promotion. Résultats-Sur les 253 apprenants, 208 ont répondu parmi lesquels 31 questionnaires ont été exclus. Cent soixante dix-sept réponses ont été retenues. Les participants étaient tout le temps ou presque connectés sur internet, mais 26,1% passaient moins de 30 minutes par jour dans le cadre de leurs études. Les principaux moteurs de recherche étaient Google (93,8%) et Wikipédia (48%) ; Facebook était le principal réseau social (91%) utilisé lors de l’apprentissage. La moitié des apprenants connaissaient les plate­formes e-learning bien que 72% d’entre eux n’aient pas eu d’expériences antérieures. Ils préféraient les cours en lignes aux cours magistraux (68,4%). 90% des apprenants mécon­naissaient les MOOCs (Massive Open Online Courses). Conclusion-Cette étude a permis de démontrer l’intérêt des technologies de l’informa­tion et de la communication dans le cursus universitaire.   Abstract Objective- Evaluate the interest of the use of Information and Educational Technologies in the initial training of dental medicine students at the faculty of dental medicine of Monastir. Methods- This was a descriptive study conducted at the FDMM in 2022. Data was collected through a questionnaire. It was composed of four parts and posted beteween May 1st and June 30th, 2022. Results- Of the 253 interns, 208 responded and 177 responsers were retained. The survey participants were connected to the internet almost all the time but 26.1% spent less than 30 minutes a day on their studies, mainly to access online courses or conduct literature research. The principle search engine were Google (93.8%) and Wikipedia (48%); Facebook was the principal social media (91%) used during learning. Almost half of the internal trainees were familiar with e-learning platforms although 72% of them had no previous experience. They preferred online courses to lectures (68.4 %) in order to consult the course at any time. More than 90% of respondents were unaware of MOOCs (Massive Open Online Courses). Conclusion- This study demonstrated the importance of the introduction of the Information and Educational Technologies in the university curriculum