High esthetic demand and expectation challenges the rehabilitation of the esthetic zone with dental implants. Most implant system manufacturers offer customized and prefabricated ceramic, specifically zirconia or alumina abutments, as an alternative to titanium or gold alloy abutments, with the aid of computer-aided designing/computer aided manufacturing (CAD/CAM) technology. A 45-year-old male patient was referred to the prosthodontics clinic for the restoration of maxillary central incisors with all ceramic dental implants. After healing, both implants were restored with all-ceramic crowns but different customized abutment materials for the purpose of comparison. The all-ceramic crown was cemented on a customized zirconia abutment at the implant site # 11 and on a customized gold alloy abutment at implant site # 21. The treating dentist as well as two prosthodontists performed a meticulous clinical examination to compare the ceramic crowns side by side and agreed that the outcome was esthetically satisfactory. The patient was satisfied with the esthetics and functional outcome of the final restorations, as was the prosthodontist.
13 October 2020 in Journal of the Pakistan Medical Association
Objective: To assess the knowledge level of Saudi women about colostrum for the newborns. Methods: The cross-sectional study was conducted from October 2015 to June 2016 at the Gynecological Clinics of King Abdulaziz University Hospital, Jeddah, Saudi Arabia, and comprised lactating mothers in the community. Data was collected using a pretested questionnaire. Data was analysed using SPSS 22. Results: of the 552 mothers, 301(54.5%) were age >30 years. The source of information about colostrum was friends and family for 367(66.67%) subjects. Overall, 367(66%) had high knowledge about colostrum. A significant correlation was detected between age and knowledge about colostrum composition and duration (p<0.05); as well as between educational level and colostrum composition, colour, and form (p<0.05). A significant association between occupational status and knowledge about colostrum colour and form was also noted (p<0.05). Conclusion: Saudi mothers were found to have a good knowledge about colostrum and its benefits. Key Words: Colostrum knowledege, Breastfeeding, Pregnancy, NewbornI, Immunity. Continuous...
The all-on-four treatment concept is widely used to rehabilitate edentulous dental arches; however, its biomechanical effect on supporting jawbones requires careful evaluation. This study aims to optimize the all-on-four implant design to minimize cortical bone stress using finite-element analysis (FEA). A three-dimensional FEA model was developed based on the mean average dimensions of Japanese edentulous mandibles (Takahashi et al. 2010). Implants (length = 12–16 mm and diameter = 3–5 mm) were placed between the two mental foramina with two parallel anterior implants positioned at distances ranging from 9.6–15 degree from the mandibular midline. Posterior implants are angled from 1–45° with lengths varying between 12–18 mm. A rigid superstructure splints all implants and an occlusal load of 50 N was applied at distal ends. The maximum Von Mises stress on the cortical bone was measured. The adaptive optimization approach identified eight optimal design configurations. These designs results in a peak Von Mises stress of 2.26 MPa which demonstrate 32% reduction compared with previous findings by Takahashi et al. (2010). The optimized all-on-four configuration significantly reduces cortical bone stress while accommodating anatomical variability. This approach offers clinical insights into improving implant longevity and outcomes in edentulous patients.
Aim: The aim was to assess the effect of antimicrobial photodynamic therapy (a-PDT) on the oral health-related quality of life (OHRQoL) of denture stomatitis patients. Methods: Forty patients were randomly selected to participate. Candidal proliferation was confirmed by using a CHROMagar culture and Gram staining. The denture surface and palatal mucosa were sprayed with a methylene blue photosensitizer prior to the photobiomodulation application. Laser therapy was applied two times a week at 72 h intervals for a period of 8 weeks. The OHIP-EDENT questionnaire was used to analyze the improvement in the OHRQoL. A Wilcoxon test was used to perform the candidal colony-forming unit’s count and comparison. A t-test was applied to evaluate the OHRQoL responses. Results: The overall CFU/mL values were higher in the dentures of the patients compared to a palatal mucosa swab. For instance, the CFU count was reduced from 5.56 ± 2.15 (baseline) to 3.17 ± 2.77 CFU/mL on day 60 on the palates. Similarly, the a-PDT application on the intaglio surface of the denture showed a reduction from 38.83 ± 14.71 to 29.05 ± 15.52 CFU/mL. A significant difference (p < 0.05) was found in function improvement as well as a reduction in physical pain, psychological discomfort, physical disability, and social interaction among the participants after photobiomodulation treatment. Conclusions: The OHRQoL was significantly improved in the DS patients. The Candida albicans abundance was radically reduced after the a-PDT application.
High-speed sintering has emerged as a promising innovation for enhancing the efficiency of dental prosthesis fabrication. However, its impact on marginal a