Aim: To assess the effects of common lactation teas on liquid sorption and color stability of three different dental composites. Methodology: A total of 60 samples (n = 5) were examined from three composite materials: Omnichroma (Tokuyama Dental Co., Tokyo, Japan), Estelite Posterior, (Tokuyama Dental Co., Tokyo, Japan), and Mosaic Universal (Ultradent production Inc., South Jordan, UT, USA). Samples measuring 2x6 mm were taken and immersed in three different teas—Humana (Humana, Bremen, Germany), Hipp, (Hipp, Pfaffenhofen, Germany), and Lactamil (Nutricia, Friedrichsdorf, Germany) —as well as artificial saliva. The measurements were recorded at baseline and on the 7th day. A sensitive analytical balance was used to measure liquid sorption, and a VITA Easy Shade device was used for color measurements. Absorption and Delta E values ​​were calculated. The data were analyzed using MANOVA at a significance level of (p<0.05). Results: Composite materials, solutions, and their interactions had a statistically significant effect on the sorption and Delta E values (p<0.001). The relative liquid absorption values among the composites were recorded as follows: Tokuyama>Mosaic>Omnichroma. Humana had the highest and Hipp had the lowest mean value among the solutions (p<0.001). For Delta E, Mosaic had the highest mean value among the composites, and Lactamil had the highest mean value among the solutions (p<0.001). Conclusion: Lactation teas cause discoloration in dental composites. In vitro and in vivo studies on color changes in dental composites are needed due to the sorption of these fluids.   How to cite this article: Özüdoğru S, Tosun G. Survival and clinical evaluation of various space maintainers used for early primary tooth loss. Int Dent Res 2021;11(Suppl.1):222-7. https://doi.org/10.5577/intdentres.2021.vol11.suppl1.32     Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

Objective: This study aims to evaluate parents’ knowledge and attitudes level on oral and dental health. Methods: One hundred and thirty parents of children aged 6-12 years, were invited to participate in the study. A 33-item questionnaire covering socio-demographic characteristics, dental attitude, dietary practices, tooth eruption, dental caries, and oral hygiene practices, was distributed to parents. The relationship between categorical variables was tested with the Chi-square test. Results: The sample comprised of 100 parents with a mean age of 37.1 ± 6.4. The knowledge and attitudes towards dental caries and oral health habits among parents did not differ significantly according to the parents’ gender, education level, or dental chair experience. There was a statistically significant difference in the responses of the first primary tooth and the first exfoliating primary tooth according to the gender of the parents (p=0.031, p=0.002, respectively). Although the education level of the parents did not affect the answers about the number of primary and permanent teeth, a statistically significant difference was found in the time of first primary tooth eruption (p=0.008). Conclusion: The study showed that parents do not have enough knowledge and awareness of dental caries and oral healthcare. Oral healthcare should be promoted as a part of general health and the awareness of the public should be increased.

Aim: In dentistry, it is desirable to preserve the properties of composites for a long time. With the development of technologies, the number of different composites used in dental treatment has increased. With contemporary patients’ aesthetic expectations, bleaching treatmens are often sought, and the literature contains many studies on the effects of bleaching on composites. Our study aimed to examine the color stability of different types of composites immersed in different solutions after bleaching treatment. Methodology: A total of 72 samples (n = 8) of three composite materials were examined: Omnichroma (Tokuyama Dental Co., Tokyo, Japan), Estelite Posterior (Tokuyama Dental Co., Tokyo, Japan), and Quadrant (Cavex, Holland BV, Netherlands). All specimens were subjected to Total Blanc (Nova DFL, Rio de Janeiro, Brazil), which is an office-type bleaching agent. After bleaching treatments, the specimens were immersed in distilled water. The baseline measurements were then recorded. After being immersed in distilled water, tea, or coffee for seven days, the final color measurements were recorded. A VITA Easy Shade device (Vita Zahnarzt, Bad Säckingen, Germany) was used to take color measurements. The CIEDE2000 formula was used to calcuate ΔE00 values. The Kruskal–Wallis test was used to compare the ΔE00 values obtained from the composite samples to assess color stability. The results were rated at a significance level of p < 0.05. Results: After bleaching treatments, the interaction between the different composites and the solutions in which they were immersed had a statistically significant effect on ΔE00 values (p < 0.05). The highest mean value was obtained with the quadrant composite material that was immersed in the coffee solution. Conclusion: It is clear that tea and coffee cause discoloration in dental composites after bleaching treatments. Due to the sorption of these solutions into the composite structure, dentists should warn patients to be cautious about consuming beverages after bleaching.   How to cite this article: Köse HD, Güner Z. Evaluation of color stability after the application of a bleaching agent to different composite resins. Int Dent Res 2022;12(Suppl.1):79-84. https://doi.org/10.5577/intdentres.453   Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.