Knowledge and Role of Paediatricians/Paediatric Residents in Infant Oral Healthcare and Dental Home across Saudi Arabia: A Cross-Sectional Study.

The prevention of oral diseases in children is highly achievable through providing early exposure to oral healthcare habits, which would make children more receptive towards dental services. A cross-sectional study used a structured, self-explanatory questionnaire to evaluate the knowledge and role of 190 paediatricians and paediatric residents towards infant oral healthcare and the dental home across Saudi Arabia. The authors sent a link to the questionnaire, comprising 36 questions, by email, as a Google e-form. The response rate obtained was 87.36%. A major proportion (95.8%) of the respondents considered that paediatricians play an important role in promoting oral health. Around 45.8% of the practitioners recommended tooth brushing after the eruption of the first tooth. About 38% of the practitioners were unaware of the children's first dental visit. The majority (95.2%) agreed that there should be an increased awareness regarding home dental habits. Most of them (78.3%) examined the oral cavity for dental problems as a part of routine childcare, and the majority (75.3%) admitted that they did not evaluate fluoride needs. A statistically significant higher mean knowledge score was observed for practitioners with more than 30 years of experience (9.35 ± 2.29), and there was a significant positive correlation (r = 0.486) between the knowledge score and mean score for the role of paediatric practitioners. Overall, the study concluded that the knowledge of paediatricians and paediatric residents in SA towards infant oral healthcare and the dental home was inadequate, and their role in maintaining oral health was found to be moderately satisfactory.

Evaluation of the Effects of Digital Manufacturing, Preparation Taper, Cement Type, and Aging on the Color Stability of Anterior Provisional Crowns Using Colorimetry.

BACKGROUND Replicating the 3-dimensional (3D) color of natural teeth in artificial substitutes is challenging. Fixed dental prosthodontics require aesthetic, color-stable provisional restorations. Recent milling and 3D printing digital manufacturing techniques offer improved outcomes. This study assesses color stability in various digital manufacturing methods, tapers, and aging effects on anterior provisional resin restorations. MATERIAL AND METHODS Two all-ceramic tooth preparations on typodont teeth with 10° and 20° tapers were converted into experimental dies. Forty temporary crowns were manufactured using 3D printing and computer-aided design/computer-aided manufacturing (milling). Within these 2 groups, 10 crowns were cemented using a regular and clear provisional cement. All samples were thermocycled to simulate clinical use of 6 months. Color difference formula (CIEDE2000) indicated changes between before and after cementation (ΔE00) and between after cementation and after thermocycling (ΔE00[II]). The color change was considered significant in terms of clinically perceptible (ΔE00 ≤0.62) and acceptable (ΔE00 ≤2.62) changes. One-way ANOVA (P value of less than 0.05) calculated overall differences, which were established using a Fisher post hoc test. RESULTS Crowns cemented with clear cement showed fewer color changes irrespective of the manufacturing technique or taper. Notably, only the 10° 3D-printed crown with clear cement had an imperceptible color change at the pre-/post-cementation phase. Meanwhile, the 10° and 20° milled crowns with regular cement exhibited unacceptable color changes after thermocycling. CONCLUSIONS For long­term temporization in the aesthetic zone, properly optimized 3D-printed provisional restorations cemented with clear cement had better color stability.

Shear Strength of Repaired 3D-Printed and Milled Provisional Materials Using Different Resin Materials with and without Chemical and Mechanical Surface Treatment.

The aim of this study was to assess the shear bond strength of 3D-printed and milled provisional restorations using various resin materials and surface finishes. There were 160 preliminary samples in all, and they were split into two groups: the milled group and the 3D-printed group. Based on the resin used for repair (composite or polymethylmethacrylate (PMMA)) and the type of surface treatment utilized (chemical or mechanical), each group was further divided into subgroups. The specimens were subjected to thermocycling from 5 °C to 55 °C for up to 5000 thermal cycles with a dwell time of 30 s. The mechanical qualities of the repaired material underwent testing for shear bond strength (SBS). To identify the significant differences between the groups and subgroups, a statistical analysis was carried out. Three-way ANOVA was used to analyze the effects of each independent component (the material and the bonding condition), as well as the interaction between the independent factors on shear bond strength. Tukey multiple post-hoc tests were used to compare the mean results for each material under various bonding circumstances. The shear bond strengths of the various groups and subgroups differed significantly (p < 0.05). When compared to the milled group, the 3D-printed group had a much greater mean shear bond strength. When compared to PMMA repair, the composite resin material showed a noticeably greater shear bond strength. In terms of surface treatments, the samples with mechanical and chemical surface treatments had stronger shear bonds than those that had not received any. The results of this study demonstrate the effect of the fabrication method, resin type, and surface treatment on the shear bond strength of restored provisional restorations. Particularly when made using composite material and given surface treatments, 3D-printed provisional restorations showed exceptional mechanical qualities. These results can help dentists choose the best fabrication methods, resin materials, and surface treatments through which to increase the durability and bond strength of temporary prosthesis.

Periodontal-Systemic Disease: A Study on Medical Practitioners' Knowledge and Practice.

OBJECTIVE: Oral health is intricately linked with systemic health. However, the knowledge and practice levels of medical practitioners (MPs) about this concern are extremely variable. The current study, therefore, sought to assess the status of knowledge and practice of MPs concerning the link between periodontal disease and different systemic conditions as well as the efficacy of a webinar as an interventional tool in enhancing knowledge of MPs of Jazan Province of Saudi Arabia. METHODS: This prospective interventional study involved 201 MPs. A 20-item questionnaire on evidence-based periodontal/systemic health associations was used. The participants answered the questionnaire before and 1 month after a webinar training that explained the mechanistic interrelation of periodontal and systemic health. McNemar test was performed for statistical analysis. RESULTS: Out of the 201 MPs who responded to the pre-webinar survey, 176 attended the webinar and hence were included in the final analyses. Sixty-eight (38.64%) were female, and 104 (58.09%) were older than 35 years. About 90% of MPs reported not being trained on oral health. Pre-webinar, 96 (54.55%), 63 (35.80%), and 17 (9.66%) MPs rated their knowledge about the association of periodontal disease with systemic diseases as limited, moderate, and good, respectively. Post-webinar, these figures improved remarkably: 36 (20.45%), 88 (50.00%), and 52 (29.55%) MPs rated their knowledge as limited, moderate, and good, respectively. Around 64% of MPs had relatively good levels of knowledge about the positive influence of periodontal disease treatment on diabetic patients' blood glucose levels. CONCLUSIONS: MPs revealed low levels of knowledge on the oral and systemic disease interrelationship. Conducting webinars on the oral-systemic health interrelationship seems to improve the overall knowledge and understanding of MPs.