Influence of electronic nicotine delivery systems (ENDS) in comparison to conventional cigarette on color stability of dental restorative materials.

OBJECTIVE: The use of Electronic Nicotine Delivery Systems (ENDS) is increasing rapidly. However, its discoloring effect on dental restorations is not known. This study aimed to evaluate the effect of ENDS aerosol when compared to conventional cigarette smoke (CS) on the color stability of dental ceramic (DC) and resin composite (RC). METHODS: This research project was conducted from November 2018 to May 2019. In this study 30 discs each for DC and RC materials were fabricated to be equally divided into groups of exposure to CS, ENDS aerosol and storage in distilled water (No smoke; NS) respectively (n=10). Specimens were exposed for a total of 7 days, with a rate of 10 cycles per day, each cycle represented 10 puffs. The color change was assessed using the CIELAB color space, by calculating ΔE. Data was analysed using ANOVA and multiple comparisons test. RESULTS: Ceramic specimens in CS (2.422 ± 0.771) and ENDS (2.396 ± 0.396) groups showed comparable ΔE (color change) (p=0.992). Similarly, composite specimens in CS (42.871 ± 2.442) and ENDS (46.866 ± 3.64) groups showed comparable ΔE (p>0.05). NS specimens in both composite and ceramic samples showed lower ΔE than CS and ENDS specimens respectively. CONCLUSIONS: Aerosol from Electronic nicotine delivery systems (ENDS) showed similar discoloration levels as cigarette smoking (CS). The level of discoloration for ceramic samples for both ENDS and CS was below clinically perceptible levels (Mean ΔE < 2.5). Discoloration of composite resin due to CS and ENDS was visually perceptible (Mean ΔE > 4.0).

An insightful evaluation of professionalism among dentistry students.

PURPOSE: The objective of this study was to explore the ambience of professionalism related to academic integrity among undergraduate dental students. METHODOLOGY: "Dundee Polyprofessionalism Inventory I: Academic Integrity" was used to collect responses from first-year to fifth-year dental students of the College of Dentistry, King Saud University (Response rate = 78%). The participants' responses (for 34 professionalism lapses) were recorded by using the Dundee Polyprofessionalism Inventory. Statistical analysis included descriptive statistics, Chi-square, and T-tests (P < 0.05). RESULTS: The "Ignore" sanction was not opted for any of the 34 professionalism behaviors, and there was unanimous agreement between the participants in considering all 34 behavior statements to be "wrong". Male and female participants were found to opt for a similar sanction as the median for 16 statements (47%), whereas, for 18 statements (53%), their responses differed with a range of levels 0.5 to 1.5. Preclinical- and clinical-year student responses also showed similarities in their 11 statements (32.3%), and they did differ for 20 statements (58.8%). Interestingly, clinical year respondents were overall on the stricter side of recommending sanctions. CONCLUSIONS: For the majority of the dental students tested, there was a good understanding of the significance of some lapses of professionalism associated with academic integrity. Some of the disclosures in this study were substantially appreciable because none of the students selected "ignore" sanction for any of the survey statements. We found that using the Dundee Polyprofessionalism Inventory for learning and understanding academic professionalism among dental students is useful.