The use of infiltrating resins is an efficient microinvasive treatment for interproximal caries in adolescents and young adults. • This method enables the treatment of lesions in a single session.• No significant adverse events or side effects were observed in patients 1 year following infiltration. AbstractObjective: The aim of this clinical trial was to assess the effect of resin infiltration on the progression of proximal caries lesions. Subjects and Methods: Forty-one patients, aged between 15 and 33 years, with 2 or more non-cavitated proximal caries lesions were included. In 41 of the adolescent and young adults, 45 pairs of proximal lesions with radiological extension into the inner and outer half of the enamel, or into the outer third of the dentin, were randomly allocated to the test groups (resin infiltration application + fluoridated toothpaste and flossing use) or to the control group (fluoridated toothpaste and flossing use). Standardized geometrically aligned digital bitewing radiographs were obtained using individual biting holders. The radiographic progression of the lesions was assessed after 1 year by digital-subtraction radiography. The McNemar test was used for statistical analysis. Results: In the test group 1/45 of the lesions (2.2%) and in the control group 9/45 of the lesions (20%) showed progression. The caries progression rate of the control group was significantly higher than that of the test group (p < 0.05). Conclusions: Resin infiltration of proximal caries lesions is effective in reducing progression of the lesion.

Objective: The aim of this study was to determine the quality and reliability of the information provided by YouTube™ videos about white spot lesion. Methods: YouTube™ videos were searched for the term 'white spot lesion' (WSL) by relevance. 142 videos about WSL were analyzed and 56 videos that met the inclusion criteria were evaluated. Video demographics (number of views, duration, number of likes, number of comments) viewing rate, primary purpose, video sources were determined and the reliability and the quality of the listed videos were evaluated with modified DISCERN (ModDISCERN) scale and the Global Quality Scale (GQS). Kruskall-Wallis, Mann–Whitney U test, Spearman’s correlation coefficients and Intra-class Correlation Coefficient were used for statistical analyses. Results: The majority of YouTube™ videos analyzed on WSL were uploaded by YouTube™ channels (50%), with 29% uploaded by dentists and 21% by companies. The mean/standard deviation (SD) ModDISCERN score, showing the reliability of the information in the videos, was 2.71±1.22; and the mean/SD GQS value showing the video quality was 2.71±1.14. 25% of the videos’ GQS value was >3, and the reliability of the information in these videos was significantly higher than the videos with a GQS of ≤3 (3.93 vs. 2.31; P

Statement of the problem: For successful endodontic treatment, mechanical cleaning and chemical irrigation can be used together. Since the-re is not yet a single solution sufficient for both root canal cleaning alone, combined use of irrigants is recommended for the synergistic effect. Poly-hexanide (PHMB), boric acid, phytic acid, peracetic acid, and hypochlorous acid are relatively new alternative endodontic irrigation solutions and there are no studies in the literature on the combined use of alternative solutions. Objective: This study aimed to evaluate the interactions that would result from applying PHMB as a substitute for CHX following alternative in-termediate irrigation solutions that might be utili-zed with NaOCl. Materials & Methods: Eight microtubes were used for this study. 0.5ml of 5%NaOCl was placed in each microtube first, the microtubes were divided into two groups as the final product CHX and Polyhexanide, and the two groups were divided into four groups with different irrigants in themselves. The study was conducted at room temperature and the images of the mixtures were photographed at 1 min, 10 min, 20 min, 30 min, and 1 hour. Groups; G1: NaOCl+ 1%Phytic acid +0.1%Polyhexanide, G2: NaOCl+ 0.02%Hypochlorous acid +0.1%Polyhexanide, G3: NaOCl+ 2% Peracetic acid +0.1%Polyhexanide, G4: NaOCl+ 5% Boric acid +0.1%Polyhexanide, G5: NaOCl+ Phytic acid+ 2%CHX, G6: NaOCl+ 0.02%Hypochlorous acid +2%CHX, G7: NaOCl+ 2% Peracetic acid+2%CHX, G8: NaOCl+ 5% Boric acid + 2%CHX. Results: White or brown precipitates occurred as soon as the soluti-ons were applied to all of the CHX groups; milky-white precipitate was only seen in the Polyhexanide group's Phytic acid-added group. After 5 minutes, air bubbles were seen in the Polyhexanide group that had Peracetic acid ad-ded, whereas the CHX group had an increase in brown precipitates. Conclusions: Considering the current research conditions, In clinical practice, the administration of Polyhexanite as the last irrigant and the com-bination of NaOCl with boric acid or hypochlorous acid can be advised.