Cention N with a higher fluoride release and recharge capacity can be used as a posterior restorative material in patients with high caries risk, thereby inhibiting secondary caries.
The purpose of this study was to determine the chemical composition of oregano essential oil, minimal inhibitory concentration (MIC) and to assess its antimicrobial efficiency against
.

Gas Chromatography and Mass Spectrometry (GC-MS) was used to determine the chemical composition of essential oil from oreganum vulgare. Broth dilution and agar diffusion method was used to evaluate the MIC. For Broth dilution, 100 μL of different concentration of oil (6.25, 12.5, 25.0, 50.0, and 100 μg/ml) was tested. Agar diffusion method was utilized to evaluate the antimicrobial efficiency of different concentration of oil (25.0, 50.0, and 100 μg/mL) against
.

GC-MS analysis revealed that oregano essential oil contained carvacrol (41.2%), γ-terpinene (12.68%), p-cymene (9.47%), α-terpinene (1.19%) as the major compounds and β-caryophyllene (0.83%), β-linalool (0.67%), β-bisabolene (0.601%), α-pinene (0.6%), β-pinene (0.5%), terpinen-4-ol (0.41%), borneol (0.4%), 3-thujene (0.4%), spathulenol (0.4%), myristicin (0.25%), and apiol (0.14%). The results of the present study reported Oregano essential oil possess antimicrobial activity against
. The MIC was 25 μg/ml and the minimum bacterial concentration (MBC) was 50 μg/ml.

Oregano essential oil was reported to be an effective antimicrobial agent against
. The MIC was found to be 25 μg/ml and the MBC was found to be 50 μg/ml.
Oregano essential oil was reported to be an effective antimicrobial agent against E. faecalis. The MIC was found to be 25 μg/ml and the MBC was found to be 50 μg/ml.
The displacement of the gingiva around the tooth allows proper access during preparation, precise impression taking, and cementation procedures that has a direct bearing on the health of the periodontium. https://www.selleckchem.com/products/DAPT-GSI-IX.html Several methods and agents are used for this purpose.

The primary aim of the study was to clinically evaluate the efficacy of naphazoline as a gingival retraction agent. The secondary aim was to compare it with tetrahydrozoline and aluminum chloride.

Fifteen patients participated in a randomized crossover clinical trial at the Army College of Dental Sciences, Secunderabad, Telangana, India.

Preliminary maxillary impressions were made with irreversible hydrocolloid for all patients to fabricate custom trays. After that, baseline impressions and cast for control group measurements were prepared. Gingival displacement was carried out in the right maxillary central incisor for all, with retraction cord soaked in three agents, either, aluminum chloride, tetrahydrozoline, or naphazoline. These agents were used in all patients with a washout period of 14 days. Elastomeric monophase impressions and die stone casts were recorded for each group. The central incisors were sectioned, and gingival retraction was measured using a measuring stereomicroscope.

The gingival displacement was statistically analyzed using one-way ANOVA and
Bonferroni.

Naphazoline had the highest retraction (138.160 μm) followed by tetrahydrozoline (136.039 μm) and aluminum chloride (130.759 μm).

Naphazoline, tetrahydrozoline, and aluminum chloride show a clinically and statistically significant amount of displacement when compared to control. Among the three agents, naphazoline showed maximum displacement and maybe a good alternative with fewer side effects.
Naphazoline, tetrahydrozoline, and aluminum chloride show a clinically and statistically significant amount of displacement when compared to control. Among the three agents, naphazoline showed maximum displacement and maybe a good alternative with fewer side effects.
Since the introduction of resin composites, the staining of resin-based materials by colored solutions such as coffee, tea, chlorhexidine (CHX), and other beverages has become a common concern.

The aim of this study was to evaluate the effect of home and office bleaching as a treatment for discoloration of composite after immersion in coffee or CHX.

A microhybrid composite (Z250), nanohybrid composite (Z550), and nanofill composite (ultimate, body shade) were selected. Forty disk shape specimens (8 mm diameter and 2 mm thickness) for each composite were prepared then divided into two groups according to staining solutions (25 g of coffee in 250 ml water, 20 min/day or 0.2% CHX, 1 min/day). Following 1 month staining, specimens were divided into two groups again. Half of the specimens was bleached with in office bleaching agent (Opalescence Boost 40% hydrogen peroxide concentration) 3 times in one visit for 15minutes and the others subjected to home bleaching agent(Opalescence 10% carbamide peroxide) 6h/day until 2 weeks both from Ultradent Products, Inc., South Jordan, UT, USA. Color of the specimens was measured with a spectrophotometer using CIELAB color space at baseline, after 1 month staining, and after ending the bleaching process.

Analysis of variance was used to analyze the data (
< 0.05).

Coffee and CHX provided significant color changes in all groups (
< 0.05). Z550 was the material more prone to discoloration in coffee in comparison with Filtek Ultimate (
= 0.003). After bleaching, materials showed significant reduction except stained Z550 by coffee in home bleaching groups. Both home and office bleaching provided significant color changes in all CHX groups (
< 0.05).

Coffee produced more color changes than CHX. The hydrogen peroxide has the same whitening effect in comparison with carbamide peroxide.
Coffee produced more color changes than CHX. The hydrogen peroxide has the same whitening effect in comparison with carbamide peroxide.
Clinical research is important to evaluate the effect of desensitizing agents.

This randomized clinical trial evaluated the immediate and 1 week desensitizing effect of two desensitizing agents Uno Topical Gel and Profluorid.

Thirtyfive patients with teeth presenting with dentin hypersensitivity were included in this clinical trial. Each quadrant in a patient was randomly assigned to one of two groups Uno Topical Gel or Profluorid Varnish. A VAS score was used to assess tooth sensitivity at baseline, immediately after application of desensitizer and after 1 week. Additionally, 30 dentin discs were prepared, divided into Group 1(Control Group), Group 2 (Profluorid Varnish) and Group 3 (Uno Topical Gel) and examined using scanning electron microscopy (SEM) after 1hour and 24 hours to evaluate tubule occlusion.

Clinical data were analysed using Friedman's test and Mann - Whitney U test. SEM data was analysed using Student's 2-sample
-test.

Uno group was significantly better to evaporative stimuli immediately (
=0.