The durability and patient acceptability of prosthesis can be gauged by the capacity of visible light curing lab composite resins to maintain color stability through time and use. Consequently, this study’s goal was to assess the color stability of three layering materials, incisal, dentin, and gingiva of SR Nexco lab composite, with exposure to coffee, Coca-Cola, and turmeric solution using a spectrophotometer. A total of 60 specimens (10 × 2 mm) of SR Nexco paste were prepared and were divided into three groups based on the layering material used. Five specimens of each group were immersed in staining solutions, namely, coffee, cola, and turmeric solution. Each group’s last five specimens were submerged in distilled water (control). The incubator that housed the samples was set to 37 °C. The CIE L*a*b* method was used to quantify the color differences (E) of specimens using a spectrophotometer at baseline and after two weeks of immersion. Using ANOVA testing, the average color change for each specimen was examined. Tukey tests were used for post hoc comparisons. The calculated mean color difference (ΔE) for incisal ranges from 3.73 (distilled water) to 28.70 (turmeric). The mean color difference (ΔE) for dentin ranges from 2.66 (distilled water) to 41.19 (turmeric). The mean color difference (ΔE) for gingiva ranges from 1.72 (distilled water) to 23.88 (turmeric). The results are statistically significant. The maximum color difference is noted for dentin specimens, and turmeric stains all three layering materials to a maximum. The color stability of SR Nexco paste layering materials is significantly affected by the discoloring agents used. The comparison of color change between the three layering materials of SR Nexco paste (dentin, incisal, and gingiva) is statistically not significant. Turmeric solution exhibits more discoloration followed by cola and coffee solution.

Aim: The study aimed to survey the opinions and responses of health professionals in academics about their interest and experience in research, knowledge over study designs, and application of a common study design to find out the objectives behind any research study. Materials and Methods: A semi-structured questionnaire containing three variables with 15 questions were sent to 300 health professionals associated with academics in the category of Bachelor/Master/Doctorate working at Al-Farabi Colleges campuses located in Riyadh, Saudi Arabia. Data were collected manually, descriptive frequencies were generated and the variables were statistically analyzed using Chi-square test. The knowledge scores between the qualification and gender were carried out using ANOVA and t-test. The final response rate was in conjuction to the statistician to exclude the uncompleted responses from the statistical analysis. Results: The results showed a discrepancy in the participation; of 95 health professionals, (40) were females and (55) were males. Bachelor (16), Masters (61) and Doctorate holders (18) gave their opinion. For the first variable (research experience), all the surveyed categories showed the same response. However, for the second variable (study design and research criteria) bachelor holders showed poor, but equal performance was reported to the master and doctorate holders. In the third variable (objectives and common designs), bachelor holders showed a poor response in contrast to the master and doctorate holders whose have mixed opinions. For knowledge scores, no significance was present between the master and doctorate holders. Conclusion: There is a lack of understanding of the research objectives and common designs frequently used in research studies particularly among the bachelor holders. Additional postgraduate education on research methods is recommended to improve the knowledge and practices of research.

Context: Repaired denture prosthesisdemands adequate transverse and impact strength. A new repairdenture base resin- “Lukafix” require to fulfil these criteria. Aims: This study evaluates and compares the transverse and impact strength of heat polymerizing, auto polymerizing and LUKAfix denture resin. Methods and Material: 20 specimens were control(without repair), and other were test specimens which were fractured and repaired with heat polymerized PMMA resin, chemically polymerized PMMA resin and LUKAfix light polymerizing denture resin. Each group wasdivided in two subgroups. Subgroup A was subjected to transverse strength test and subgroup B to impact strength test. Statistical Analysis Used: One way ANOVA was used to identify the mean difference among the four groups. Post-Hoc-Bonferroni was done to observe the difference between the groups. Results: Maximum transverse strength was observed in specimens repaired with heat polymerized (48.33 ± 9.19) and least in LUKAfix denture resin (6.56 ± 1.15). Also, impact strength was maximum for heat polymerized (3.64 ± 0.41) followed by LUKAfix denture resin (2.34 ± 0.44). Conclusions: Repair with LUKAfix denture resin resulted inferior transverse and impact strength as compared to heat polymerized PMMA resin.

Background and Objectives: Interocclusal recording materials should have high dimensional stability for accurate articulation. The aim of this in vitro investigation is to assess and compare the linear dimensional stability of interocclusal recording materials over time. Methods: Polyvinylsiloxane, polyether, bisacryl and bite registration wax were used in the study. The test used a mold according to the American Dental Association (ADA) specification number 19. A total of 40 samples were collected, and each group consisted of 10 samples. The dimensional changes in the samples after 1, 24, 48, and 72 h were measured using an optical microscope equipped with a micrometer device. Results: Each sample had five measurements taken at different times, and the mean of those readings was used to calculate the dimensional change and compare it to the initial measurement made on the die. ANOVA and the Tukey HSD test for repeated measurements were used to examine the data. The average percentage dimensional change over time 1) Group A: 1, 24, 48, and 72 h; 2) Group B: 1, 24, 48, 72 h; 3) Group C: 1, 24, 72 h; 4) Group D1, 24, 48, 72 h; and so on. Interpretation and Conclusion: Both material and temporal considerations impact on linear dimensional stability. The most dimensionally stable material was discovered to be polyvinylsiloxane, followed by polyether, bisacryl, and bite registration wax.

Improvising the significance of vertical dimension of occlusion in patients with dentulous and edentulous condition–An update - JDP- Print ISSN No: - Online ISSN No:- 2348-8727 Article DOI No:- 10.18231/j.jdp.2024.004, The Journal of Dental Panacea-J Dent Panacea

Odontogenic tumors (OTs) include entities of a hamartomatous nature, such as odontoma, benign neoplasms like an adenomatoid odontogenic tumor (AOT), some benign neoplasms are aggressive as in the case of ameloblastoma. The AOT is a rare odontogenic tumor constituting only 3% of all the OT and very often misdiagnosed as an odontogenic cyst. We report a case of an intra-osseous type of AOT occurred in a young 16-year-old female located in the anterior maxilla along with the clinical, radiological, histological features, and literature review related to the tumor affecting the patient.