e for dental implant rehabilitation.Combined cement- and screw-retained restorations (CCSRRs) incorporate the simplicity of the cement method and the retrievability of the screw method, offering good resistance, allowing the removal of the excess of cement before clinical placement of the restoration, and providing another alternative for dental implant rehabilitation. The present study aimed to evaluate the effect of various root-conditioning agents on root surfaces that are periodontally affected. A total of 90 human teeth having single root that were extracted because of chronic periodontitis were chosen. The extracted teeth were cleaned of saliva and blood using a soft-bristled brush and distilled water. The investigational groups were categorized into group I-doxycycline HCl, group II-ethylenediaminetetraacetic acid, and group III-tetracycline HCl. Samples were readied for histological study by scanning electron microscope (SEM). The SEM was used to assess the effectiveness of smear layer removal, amount of patent dentinal tubules out of the totality of dentinal tubules present, and the appreciation of collagen fiber-like structures inside the intertubular area. The highest efficacy for smear layer removal was seen for group III-tetracycline HCl samples (1.80 ± 0.148) followed next by group II-EDTA (1.36 ± 0.230), and group I-doxycycline HCl (1.30 ± 0.283). The hodontal treatment goals. This study aimed to assess the effect of addition of nano-titanium oxide (nano-TiO ), nano-silicon dioxide (nano-SiO ), and a combination of both, on antimicrobial activity of an orthodontic composite. Molds measuring 0.64 × 0.5 mm were used for the fabrication of composite disks. For this purpose, 0.5% and 1% nano-TiO , nano-SiO , and a combination of both (0.5% nano-TiO and 0.5% nano-SiO ), were mixed with Transbond XT composite (3M Unitek). A total of 180 composite disks were fabricated for eluted component, disk agar diffusion (DAD), and biofilm inhibition tests. The colony counts of ( ), ( ), and ( ) and the diameters of growth inhibition zones were measured at 3, 15, and 30 days after exposure to the materials. Data were analyzed using one-way ANOVA and a test. None of the nano-TiO and nano-SiO concentrations had any significant effect on the growth inhibition zone. All tested concentrations of nano-TiO and nano-SiO decreased the colony count of all bacteria. The composite sample containing both nano-TiO and nano-SiO had the greatest efficacy for reduction of and colony counts at all three time points. Also, 1% nano-TiO and 1% nano-SiO had similar effects on in eluted component test. Addition of TiO and SiO nanoparticles conferred antimicrobial property to the tested orthodontic composite. Using orthodontic composite containing nonoparticles with antibacterial activity may prevent dental caries.Using orthodontic composite containing nonoparticles with antibacterial activity may prevent dental caries. To compare the vertical margin accuracy of lost wax castings produced by the conventional casting technique with all metal (WIRONIUM®) and PFM alloy (WIRON®99) using a metal ring and ringless system. A brass die assembly was used to fabricate standardized wax pattern crowns. A total of 100 wax patterns were made with both ringless and metal ring investment systems. Wax patterns were readapted and refined on the master die and divided into two groups, namely, group I and group II with 50 wax patterns in each group. Group I (ringless system) and group II (metal ring system) were further divided into subgroups having a sample size of 25 in each group. Each coping was invested and cast individually. The marginal discrepancy between the metal die and the castings were measured by a stereomicroscope and AutoCAD software 2013. Measurement was made on the facial area of the metal die. The resultant casts obtained from different casting systems show statistically significant difference found between the marginal and use of occlusal vents or die spacers. To compare the effect of visual information and verbal communication on the level of anxiety among patients undergoing dental implant (DI) therapy. A total of 270 patients who were undergoing DI treatment were recruited for the study. An equal number of patients ( = 90) were randomly allocated into three study groups which were formed on the basis of the mode of delivery. Subjects in group I received verbal information, whereas patients in group II were shown a video of surgery on manikins. Group III subjects were made to watch a video of surgery on a real patient. Before the surgery, anxiety levels were measured for all patients using the modified Corah dental anxiety scale (MDAS). Questionnaires were filled by all patients and were later analyzed. The values of Cronbach's α and the behavioral involvement subscale were 0.89 and 0.91, indicating hemogeneous sample. Patients of group I showed significantly reduced anxiety levels ( < 0.01) followed by groups II and III. Verbal information generated less anxiety than visual information on patients undergoing DI therapy. To assess the best method of information delivery to dental implant patients in which their anxiety will be minimal.To assess the best method of information delivery to dental implant patients in which their anxiety will be minimal. The aim of this study is to compare the canal cleaning ability of S-One file (AF BLUE) system with WaveOne Gold single file system, using scanning electron microscopy (SEM). In the present study, 40 freshly extracted permanent mandibular premolars with a single-root canal and straight roots were selected. The teeth were randomly divided into three groups. The canals were prepared by crown-down technique. Buccolingual sectioning of the samples were done followed by SEM evaluation. Data were statistically analyzed using Kruskal-Wallis test. The statistical significance level was set at value <0.05. The analysis of the results demonstrated that WaveOne presented higher cleaning capacity of root canals with a statistically significant difference, when compared to S-One file system ( value < 0.05). Both the file systems showed significant cleaning efficacy in the coronal and middle-thirds of the root canals when compared to the apical thirds. GSK690693 nmr Also, the WaveOne showed better results than S-One (AF BLUE), and the results were statistically significant.