Recurrent caries was partly ascribed to lack of antibacterial properties in composite resin. Silver and zinc nanoparticles are considered be broad-spectrum agents. The aim the present study evaluate resins containing 1% silver zinc-oxide on Streptococcus mutans Lactobacillus.Ninety discoid tablets 0%, nano-silver nano particles were prepared from flowable resin (n = 30). discs evaluated by direct contact test. Diluted solutions (PTCC 1683) Lactobacillus 1643) prepared. 0.01 mL each bacterial...

Objective: Dental caries is one of the most common infectious diseases worldwide.Saliva has many functions in oral cavity and first line defense against dental caries.Oxidative stress can affect initiation progression inflammatory such as caries.Thus aim this study was to evaluate relationship between total antioxidant capacity (TAC) saliva caries.Study Design: 100 healthy high school students (50 female 50 male) with age range 15 -17 years were randomly selected, divided four...

It is difficult to achieve adhesion between resin cement and zirconia ceramics using routine surface preparation methods. The aim of this study was evaluate the effects CO2 Er:YAG laser treatment on bond strength ceramics.In in-vitro 45 disks (6 mm in diameter 2 thickness) were assigned 3 groups (n = 15). In control group (CNT) no used. COL EYL, lasers used for pretreatment surface, respectively. Composite cemented disk dual-curing cement. Shear tests performed at a crosshead speed 0.5...

Several new bioactive compounds were recently introduced to the market with favorable ion release, tooth remineralization, and alkalizing potential. This study sought compare phosphate release potential of three materials in comparison composite resin. Thirty-six discs (2 × 6 mm) fabricated from Fuji II LC resin modified glass ionomer (RMGI), Activa BioActive, Cention N, Z250 plastic molds. The specimens stored distilled water for 24 48 h months. Half used assess while other half 1 after pH...

Clinical Relevance The use of resin-modified glass ionomers as cavity liners in the closed-sandwich technique reduced microleakage Class II composite restorations.

Incorporation of silver nanoparticles into composite resins is recommended for their reported antibacterial properties, but this incorporation can affect the wettability such materials. Therefore, study evaluated effect nano-silver addition to silorane-based and methacrylate-based composites on contact angle. Nano-silver particles were added Z250 (methacrylate-based) P90 (silorane-based) at 0.5% 1% by weight. The control group had no additions. SEM-EDX analysis was performed confirm...

Background: Some previous studies have suggested that laser irradiation improves the bond strength of composite to dentin. This study aimed assess effect 810 and 970 nm diode on microtensile Bond Strength (µTBS) universal adhesives Methods: In this in vitro, experimental study, occlusal third 54 extracted molars was cut, they were randomly divided into 9 groups (n=18). 1-3, Tetric N-Bond Universal (TNB), G-Premio (GPB), Single (SBU) applied, respectively teeth built-up by applying three 1-mm...

ABSTRACT Aim The aim was to evaluate the antibacterial properties of composite resin containing nanosilver against Streptococcus mutans (SM) and Lactobacillus (L). Materials methods Nanosilver added Z250 at 0.5 1% by weight. In order confirm homogenous distribution nanoparticles in resin, SEM-EDX analysis performed on one sample each group. without used as control. Direct contact test nanoparticle-loaded composites: 0.001 ml Mc Farland suspension MS L placed disks, incubated for 1 hour 5 10%...

Studies show that fluoride (F) and nano-hydroxyapatite (nano-HA) would result in remineralization of white spot lesions (WSLs), which are among the most prevalent consequences fixed orthodontic treatment. The present study evaluates compares clinical effects an Iranian toothpaste containing nano-HA with F-containing one on early enamel lesions.In this randomized trial study, 50 patients who had received treatment were recruited immediately after debonding. Three photographs, including...

Fiber reinforced composite (FRC) posts are cemented with resin cements. It is reported that using cements in canals sealed eugenol-containing sealers reduces the post retention. However, there controversy on subject.The aim was to investigate influence of and amount dentin removal from root canal different diameters retention FRC posts.It an vitro studyThe roots sixty teeth were cut 14 mm distance apex instrumented working-length 13 mm. The randomly distributed into 2 groups (n = 30)....

Abstract Secondary caries is the most common cause of dental restoration failures. This study aimed to compare diagnostic accuracy conventional and digital intraoral radiography cone beam computed tomography (CBCT) for detection recurrent around composite restorations. mesio-occluso-distal (MOD) cavities were prepared using bur on 45 extracted sound human molar teeth. The teeth divided into 3 groups. In control group, restored with resin after etching bonding (n=15). Group 2, 500-μm thick...

Attempts to improve bond strength of self-etch adhesives can enhance the durability composite restorations.The aim present study was evaluate effect collagen and smear layer removal with sodium hypochlorite solution (NaOCl) EDTA on micro-tensile (μTBS) dentin.It an in-vitro study.Seventy-two teeth were divided into eight groups their crowns ground perpendicular long axis expose dentin. The polished silicon-carbide papers. treated as follows: No conditioning, 0.5-M 2.5% NaOCl + conditioning....

Effect of Epigallocatechin Gallate on shear bond strength composite resin to bleached enamel: an in vitro studyObjectives: The aim this study was determine the effect epigallocatechin gallate (EGCG) enamel.Materials and Methods: Ninety enamel surfaces maxillary incisors were randomly divided into 9 groups as follows: G1: control (no bleaching); G2: bleaching; G3: bleaching storage for seven days; G4 -6: application 600, 800 1,000 µmol EGCG-containing solution 10 minutes, respectively; G7 -9:...

Introduction: The purpose of the present study was to evaluate different concentrations sodium hypochlorite activated with laser in removing smear layer apical, middle, and coronal segments root canal walls by scanning electron microscopy analysis. Methods: Sixty single-rooted human mandibular teeth were decoronated a standardized length. samples prepared using Race rotary system size 40, 0.04 taper divided into 4 equal groups (n = 15). Group 1, irrigated EDTA 17% 5.25% NaOCl, 2, 3 4, 1%,...

Introduction: It has been suggested that the application of casein phosphopeptide-amorphous calcium phosphate paste (CPP-ACP) and CO2 laser irradiation on enamel could increase resistance to caries acid attacks. The aim current study was compare influence CPP-ACP microhardness demineralized enamel.Methods: Thirty sound maxillary extracted premolars were selected. crowns cut at cervical line split into facial palatal halves. Specimens mounted in self-cure acrylic blocks such way surface...

Introduction: This study aimed to compare the microshear bond strength of composite enamel treated with Erbium-Doped Yttrium Aluminum Garnet (Er:YAG) laser using a self-etch one step bonding agent.Methods: Seventy-six surfaces were prepared from 38 sound human third molar teeth. Specimens randomly divided into four groups 18. The surface in half specimens was irradiated Er:YAG laser. One extra specimen each group evaluated under scanning electron microscope (SEM). Composite micro-cylinders...

Demineralization is a common problem following orthodontic treatments. Today using antibacterial nanoparticles in preventing white spot lesions being discussed. Given that ZnO and TiO2 have direct known properties, this study aims to evaluate these nanoparticles' effects bondings' composition on lesions. In vitro experimental study, 43 sound human premolar teeth were divided into five groups according the adhesive utilized for bracket bonding: None group consisting of 12 bonded with...

Introduction: Successful repair of composite restorations depends on a strong bond between the old and composite. This study sought to assess shear strength aged silorane-based following surface treatment with Nd:YAG, Er,Cr:YSGG CO2 lasers. Methods: Seventy-six Filtek silorane cylinders were fabricated by 2 months water storage at 37°C. The samples randomly divided into 4 groups (n=19) no (group 1) 2), Nd:YAG 3) 4) was applied measured. data analyzed using one-way analysis variance (ANOVA)...