Stallingsatkins9775
2 mm
). The ratios of mechanical properties (PS/IT, PS/GV, and GV/IT) were found significant in intergroup comparison. find more The PS/GV ratio was in order Type B (26.5) > Type A (23.0) > Type C (20.2). Spearman's rho rank correlation test showed that PS of Type B was correlated significantly with GV.
The design of thread and gripping volume were the important factors that contributes to the mechanical strengths of micro-implant.
The design of thread and gripping volume were the important factors that contributes to the mechanical strengths of micro-implant.
Orthodontic wax materials are available on the dental market and are given by orthodontists due to pain, sores and irritation caused by treatment. The aim of the study was to compare biofilm formation and microbial adhesion at different time points on different protective materials used against orthodontic wounds invitro.
Microbial adhesion and biofilm formation were evaluated against
ATCC 25175 and
ATCC 4356 standard strains on orthodontic wax materials at the 0, 24th, 48th, 72nd, 96th and 120th hour. The Kruskal Wallis test and Bonferroni test were used for statistical evaluations. Statistical significance was set at p < 0.05.
It was observed that
formed statistically significantly more biofilm on OrthoDots®CLEAR (OrVance) than Ora-Aid (TBM Corporation) at the 48th hour (p < 0.05). Furthermore,
formed statistically significantly more biofilm on OrthoDots®CLEAR (OrVance) than Brace Gard®(Infa-Lab Inc.) at the 72nd, 96th and 120th hours (p < 0.05).
Significant differences were notge, this is the first study investigating biofilm formation on waxes and more studies are needed in this field.
Despite the clinical appeal of restoring deep class II cavities in single increment using bulk-fill resin composite, sealing of bulk-filled composite restorations is a concern. This study evaluated interfacial adaptation of bulk-fill composite restoration to axial wall and gingival floor of class II cavities using cross-polarization optical coherence tomography (CP-OCT).
Box-shaped class II cavities were prepared in extracted molars and divided into three groups (
= 7) according to adhesive used; Clearfil SE Bond 2 (SE2), Tetric-N Bond Self-Etch (TSE) or Tetric-N Bond Universal (TNU). All adhesives were applied in self-etch mode and according to manufacturers' recommendation. Then, preparations were bulk-filled with Filtek Bulk Fill Posterior Restorative resin composite and immersed in a contrast agent. Tomographic images of axial wall and gingival floor of each restoration were obtained by CP-OCT (IVS-300, Santec) with a central wavelength of 1330 nm and were imported to an image analysis software to q to one-step self-etch adhesive and universal adhesive.
Bibliometric analysis highlights the key topics and studies which have shaped the understanding and management of a concerned disease. Here the top-cited articles on oral potentially malignant disorders (OPMD) were characterized and analyzed.
A comprehensive search was performed and identified in the Scopus database from 1941 to 10 March 2019 for the 100 most-cited articles on OPMD.
The number of citations of the 100 selected articles varied from 131 to 1422, with a mean of 240.6 citations per article. Molecular markers/targets, chemoprevention, and early detection and diagnosis of oral cancer were the top-3 study topics, and the proportion of the number of the articles on the top-3 topics and that of the number of citations was 47% and 47.7%, respectively. Moreover, 20 (90.9%) of the 22 high-quality articles published in journals with high IF > 9 were the research of top-3 topics. Besides, the most contributing author, Hong WK (n = 11), was from the most contributing institution and country of origin, M.D. Anderson Cancer Center (n = 12), United States (n = 41). Systematic reviews (n = 7), randomized controlled trial (n = 5), cohort studies (n = 18) were study designs with higher evidence level, but the large majority (n = 70) were considered lower level.
The results of this first citation analysis of the 100 most-cited articles on OPMD provide a historical perspective and key topics, and suggest a troika for the trends of further research and clinical practice in the field of OPMD.
The results of this first citation analysis of the 100 most-cited articles on OPMD provide a historical perspective and key topics, and suggest a troika for the trends of further research and clinical practice in the field of OPMD.
Several single-file systems manufactured using different heat treatment and operated by different kinematics have been released. This study compared the bending resistance and cyclic fatigue resistance of three NiTi files, and examined their phase-transformation behavior.
WaveOne Gold Primary (WOG), Reciproc Blue R25 (RPB), and HyFlex EDM OneFile (HDM) were tested (N = 40/instrument). A vertical load was applied to a point 3 mm from the tip, and the stress was measured until a displacement of 3 mm. Tests were conducted at either room temperature (RT 22 °C) or body temperature (BT 37 °C) (n = 10). Cyclic fatigue resistance tests were performed in an artificial canal, which had a curvature angle of 40° and a 5-mm radius. Tests were conducted at either RT or BT (n = 10). Instruments were operated according to the manufacturers' instructions. Test results were analyzed using the Kruskal-Wallis and the Mann-Whitney tests. Additional three instruments of each brand were subjected to differential scanning calorimetry (DSC).
At RT the bending resistance of three files were not significantly different. However, at BT the bending resistance of RPB was highest, followed by WOG, and HDM (
< 0.05). At RT, RPB demonstrated the longest fracture time, followed by HDM, and WOG (
< 0.05). At BT, HDM had the longest fracture time, followed by RPB, and WOG (
< 0.05). The WOG, RPB consisted of austenite in a considerable proportion, whereas HDM was mainly martensite state at BT.
HDM presented superior flexibility and cyclic fatigue resistance at BT.
HDM presented superior flexibility and cyclic fatigue resistance at BT.
