Clinical comparison of different glass ionomer-based restoratives and a bulk-fill resin composite in Class I cavities: A 48-month randomized split-mouth controlled trial.

Objective: The aim of this study is to compare the retention rates (primary outcome) of high-viscosity glass ionomer (GI), glass carbomer (GC), zirconia-reinforced GI (ZIR), and bulk-fill (BF) composite resin restorations. Secondary outcomes included anatomical form, marginal adaptation, marginal discoloration, color match, surface texture, post-operative sensitivity and secondary caries.

Methods: Two calibrated operators placed 128 restorations in 30 patients with a mean age of 21 years.

Effect of resin infiltration on the color and microhardness of bleached white-spot lesions in bovine enamel (an in vitro study).

Objectives: The aim of this study was to investigate both the effect of resin infiltration on the color and microhardness of white spot lesions (WSLs) that treated with bleaching and to analyze the penetration of the infiltrant.

Materials And Methods: In each of 135 bovine enamel specimens, WSLs were produced. The samples were then randomly divided into three groups (n = 45): group I, bleached; group II, resin-infiltrated; group III, bleached and resin-infiltrated.

Effect of different polishing systems and drinks on the color stability of resin composite.

Aim: The purpose of this study was to evaluate the color stability of resin composit using different finishing systems and drinks.

Materials And Methods: Composit disks (5 mm diameter, 2 mm thickness) were prepared for each nanofilled composite using a brass mold. The specimens were divided into 5 finishing system groups Mylar strip (Mylar, DuPont, Wilmington, Del.

Clinical comparison of bur- and laser-prepared minimally invasive occlusal resin composite restorations: two-year follow-up.

This study evaluated the two-year clinical performance of two minimally invasive cavity preparation techniques, bur and laser, in Class I occlusal resin composite restorations. Twenty-seven patients, each having at least one pair of occlusal caries, were enrolled in this study. For each patient, one of the cavities was prepared with a diamond bur, and the other was prepared with Er, Cr:YSGG laser.

Effect of prerestorative home-bleaching on microleakage of self-etch adhesives.

Background: Tooth bleaching has become a routine treatment due to patients' esthetic demands.

Purpose: The aim of this study was to evaluate how prerestorative home-bleaching affected microleakage of resin composite restorations bonded with etch-and-rinse and self-etch adhesives.

Materials And Methods: Fifty extracted human premolar teeth were used.

Clinical evaluation of a nanofilled fissure sealant placed with different adhesive systems: 24-month results.

Objective: This clinical study compared the retention rates of a nanofilled occlusal fissure sealant placed with the use of an etch-and-rinse or a self-etch adhesive over 24 months.

Methods: Two-hundred and forty-four sealants were placed on the permanent premolars and molars of 16 subjects who had no restorations or sealants present on the fissures and no detectable caries. The sealants were placed with either SoloBond M two-step etch-and-rinse adhesive or FuturaBond NR one-step self-etch adhesive by four previously calibrated dentists, using a table of random numbers.

Effect of antibacterial varnishes applied to root dentin on shear bond strength of tooth-colored restorative materials.

This study investigated the effect of certain varnishes on the bond strength of different tooth-colored restorative materials applied to root dentin. One-hundred and eighty tooth slabs, including mesial and distal surfaces, were attained through dividing the teeth, then embedding them in methylmethacrylate. The root surfaces were ground flat through cementum, exposing the dentin.

The effect of two different polishing techniques on microleakage of new composites in Class V restorations.

Aim: The purpose of this study was to investigate the effect of polishing systems on the microleakage of a nanofill, a nanohybrid, and a microhybrid composite in Class V cavities.

Methods And Materials: Preparations were made at the cemento-enamel junction (CEJ) of 36 extracted human premolars. The teeth were randomly divided into three groups and restored with new resin composites according to the manufacturers' instructions as follows: Group 1, Filtek Supreme & Single Bond; Group 2, Grandio & Solobond; and Group 3, Artemis & Excite.

Shear bond strength of orthodontic brackets with newly developed antibacterial self-etch adhesive.

Because the enamel adjacent to brackets may be affected by microorganisms, an antibacterial adhesive may be a useful choice to prevent and reduce demineralization. The purpose of this in vitro study was to determine the (1) shear bond strength of a self-etch and an antibacterial self-etch adhesive for orthodontic metal brackets and (2) bond failure interface of a self-etch and an antibacterial self-etch adhesive using a modified adhesive remnant index (ARI). Twenty-four defect-free premolars were randomly assigned into two groups.

The in vitro performance of laser fluorescence and caries-detector dye for detecting residual carious dentin during tooth preparation.

Objective: The aim of this in vitro study was to compare the performance of a laser fluorescence device (DIAGNOdent) and a caries-detector dye for detecting residual dentinal caries.

Methods And Materials: Forty extracted human molar teeth with deep dentinal carious lesions on their approximal surfaces were used for the study. The caries were removed by a new chemomechanical system, Carisolv.

Antibacterial activity of different generation dentin-bonding systems.

Objectives: The aim of this in vitro study was to investigate the antibacterial activities of different generation dentin-bonding systems.

Method And Materials: The antibacterial activities of dentin-bonding systems Optibond FL Primer, Single Bond, Clearfil SE Bond Primer, and Prompt-L-Pop were evaluated against Streptococcus mutans, Streptococcus salivarius, Lactobacillus casei, and Lactobacillus acidophilus. Cervitec (1% chlorhexidine varnish) was also examined as a positive control material.

Use of laser fluorescence in monitoring the durability and cariostatic effects of fluoride and chlorhexidine varnishes on occlusal caries: a clinical study.

Objective: The aim of this study was to compare the effectiveness and caries-preventive effects of a fluoride varnish (Fluor Protector; 0.1% fluoride) and a chlorhexidine varnish (Cervitec; 1% chlorhexidine and 1% thymol) on initial caries of occlusal fissures and to monitor the durability of the varnishes by the use of a fluorescence system, DIAGNOdent (Dd).

Method And Materials: Nineteen subjects underwent professional tooth cleaning at the beginning of the study.

Surface roughness of nanofill and nanohybrid composite resin and ormocer-based tooth-colored restorative materials after several finishing and polishing procedures.

The purpose of this study was to evaluate the effect of several finishing and polishing procedures on the surface roughness of nanofill and nanohybrid composites and ormocer-based dental restorative materials. The materials included a nanofill composite (Supreme); a nanohybrid composite (Grandio); and an ormocer (organically modified ceramic) (Admira). Forty specimens of each material were prepared using a Mylar strip (polyester strip) and randomly divided into four finishing and polishing groups (n =10): (I) Diamond bur/Super-snap Rainbow Technique Kit(Al(2)O(2)-coated, graded abrasive discs); (II) Diamond bur/Astropol and Astrobrush system (silicone abrasive polishers and brush system); (III) Tungsten carbide bur/Super-snap Rainbow Technique Kit; and (IV) Tungsten carbide bur/Astropol and Astro-brush system.

The effect of current-generation bonding systems on microleakage of resin composite restorations.

Objective: The aim of this study was to determine the microleakage of current-generation dentin bonding systems in Class II resin composite restorations.

Method And Materials: Class II (occlusodistal or occlusomesial) cavity preparations with a gingival margin 2 mm apical to the cementoenamel junction were prepared on 70 noncarious, extracted human premolar teeth. Teeth were randomly divided into five groups and treated with different-generation bonding systems (Optibond FL, Gluma One Bond, Clearfil SE Bond, acid etching plus Clearfil SE Bond, and Prompt-L-Pop).

The effect of flowable resin composite on microleakage in class V cavities.

This in vitro study investigated the microleakage of flowable resin composite as a restorative material and as a liner (either light cured separately or co-cured with hybrid resin composite) in Class V cavities. A light-cured hybrid resin composite was used as a control. Twenty extracted human premolars were prepared with standardized Class V cavity outlines on the buccal and lingual surfaces.