Bond Strengths of Silorane- and Methacrylate-Based Composites to Various Underlying Materials

Objective. To evaluate shear bond strength (SBS) values of a methacrylate (FZ 250) and a silorane-based (FS) resin composite to various underlying materials.Materials and Methods. A total of 80 samples were prepared with four different underlying materials; a flowable (FLC) and a bulk-fill flowable composite (BFC), and a conventional (CGIC) and resin modified glass-ionomer cement (RMGIC). These underlying materials were laminated plus to methacrylate or silorane-based resin composites(n=10). To evaluate the specimens SBS values were evaluated with a universal testing machine (cross-head speed; 1.0 mm/min). Statistical comparisons were carried out using two-way ANOVA and Tukey’s post hoc test with a significance level ofP&lt;0.05.Results. SBS values for FZ250 were significantly higher than for FS for all of the underlying materials tested(P&lt;0.05). SBS values of FZ250 to BFC were significantly higher than to all other materials(P&lt;0.05), whereas SBS values of FS did not vary significantly according to underlying material(P&gt;0.05).Conclusion. The use of FS in conjunction with any of the tested materials showed lower SBS than the FZ 250. Also, new low elastic modulus liner BFC presented slightly good interfacial adhesion so, the usage of BFC as an underlying material may be preferable for FZ 250.</jats:p

Effect of Fluoride Varnish Containing CPP-ACP on Preventing Enamel Erosion

This study aimed to investigate the effect of a fluoride varnish with added casein phosphopeptide-amorphous calcium phosphate treatment on the prevention of enamel erosion, and it compared the results with those of other fluoride varnishes. Fifty enamel specimens obtained from bovine incisors were randomly divided into five groups (n=10) based on the type of surface pretreatment used: intact enamel (Group 1); intact enamel+erosive cycles (Group 2); intact enamel+MI varnish+erosive cycles (Group 3); intact enamel+Clinpro White varnish+erosive cycles (Group 4); and intact enamel+Duraphat varnish+erosive cycles (Group 5). The specimens were subjected to erosive cycles for five days. The surface roughness was evaluated using atomic force microscopy. The results were statistically analyzed using one-way ANOVA and Tukey’s tests. Group 1 had the smoothest surfaces. After the erosive cycles, the greatest surface roughness values were observed in Group 2, followed by Groups 5, 4, and 3, respectively. Statistically significant differences were observed among all groups (p&lt;0.05). The application of fluoride varnishes had some positive effects on preventing enamel erosion; however, the most effective agent was fluoride varnish with added casein phosphopeptide-amorphous calcium phosphate.</jats:p

Evaluation of Internet users’ interest in paediatric dental problems during the COVID-19 pandemic

AbstractBackgroundThe coronavirus (COVID-19) pandemic had a significant impact on dental care providers; patients had trouble accessing routine dental care due to concerns about dentist and patient safety. People spent more time at home due to lockdown restrictions and a growth in individuals working from home. This increased the likelihood of looking for dental care information on the Internet. In the present study the aim was to compare the trends of Internet searches about paediatric dentistry before and after the pandemic.MethodsThe monthly variation in relative search volume (RSV) and the lists of paediatric dentistry-related queries were determined from December 2016 to December 2021 using Google Trends. Two separate datasets were obtained before and after the pandemic. One-way ANOVA was used to determine whether there was a significant difference in RSV scores between the first 2 years of COVID-19 and the first 3 years before COVID-19. T-tests were used for bivariate comparisons.ResultsThere was a statistically significant increase in queries regarding dental emergencies, especially toothache (p &lt; 0.01) and dental trauma (p &lt; 0.05). The RSV of paediatric dentistry queries increased over time (p &lt; 0.05). Other queries about recommended dental procedures during the pandemic, such as the Hall technique and stainless steel crowns, showed an increasing trend. However, these were not statistically significant (p &gt; 0.05).ConclusionsMore searches were carried out, related to dental emergencies, on the Internet during the pandemic. Moreover, non-aerosol generating procedures such as the Hall technique became increasingly popular according to the frequency of searches carried out.</jats:sec

Treatment of Anterior Dental Crossbite Using Bonded Resin-Composite Slopes: Case Reports

ABSTRACTAnterior crossbite is the term used to describe an abnormal labiolingual relationship between one or more maxillary and mandibular incisor teeth. Different techniques have been used to correct anterior crossbite. This paper describes the use of bonded resin-composite slopes for the management of anterior crossbite in children in early mixed dentition.In each of the cases presented here, dental crossbite was corrected by applying a 3-4 mm bonded resin-composite slope to the incisal edge of the mandibular incisor with an angle 45° to the longitudinal axis of the tooth. Correction was achieved within 1-2 weeks with no damage to either the tooth or the marginal periodontal tissue. The procedure is a simple and effective method for treating anterior dental crossbite. (Eur J Dent 2008;2:303-307)</jats:p

Evaluation of Internet Users' Interests for Paediatric Dental Problems during the COVID-19 Pandemic

Abstract Background The outbreak of pandemic coronavirus (COVID-19) had a significant impact on dental care providers; patients had trouble accessing routine dental care due to concerns about the safety of dentists and patients. Therefore, people spend more time at home due to lockdown and working from home, which increases their likelihood of looking for dental care information on the Internet. The present study aims to compare the trends of Internet searches for paediatric dentistry queries before and after COVID-19. Design: The weekly variation of relative search volume (RSV) and the lists of paediatric dentistry-related queries were determined from December 2018 through December 2020 using Google Trends. Two separate data sets were obtained before and after the pandemic. It compared COVID-19's first year to the year before COVID-19. The data sets were analyzed using paired t-test. Results There was a statistically significant increase in queries about dental emergencies, especially toothache and dental trauma (p &lt; 0.05). Other queries about recommended dental procedures during COVID-19, such as Hall Techniques and stainless steel crowns, showed an increasing trend. However, these were not statistically significant (p &gt; 0.05). Conclusions People search for many more emergency queries on the Internet due to their limited access to dental care providers. Also, non-aerosol generating procedures such as Hall Techniques are becoming much more popular.</jats:p