abstract：PURPOSE:To assess the "whitening" through stain removal benefit delivered by a prototype power toothbrush and a positive control power toothbrush over a 2-week period. METHODS:Four independent studies with identical protocols were conducted to examine tooth whitening through the removal of extrinsic stain with power t...

journal_title：American journal of dentistry

authors： Terézhalmy G,Stookey GK,Mason S,Bartizek RD,Biesbrock AR

更新日期：2004-01-01 00:00:00

abstract：PURPOSE:To evaluate the laboratory fracture resistance of teeth restored with crowns constructed in one of these materials (BelleGlass HP with and without fiber reinforcement. METHODS:40 sound maxillary premolar teeth were chosen and were allocated to four groups of 10 teeth, with the mean size of any group varying by...

journal_title：American journal of dentistry

authors： Ellakwa A,Thomas GD,Shortall AC,Marquis PM,Burke FJ

更新日期：2003-12-01 00:00:00

abstract：PURPOSE:To measure the linear displacement and force induced by polymerization shrinkage of a series of resin-based restorative materials. METHODS:The materials tested were 10 ultrafine midway-filled resin-based composites, mainly used in anterior restorations (Brilliant Dentin, Brilliant Enamel, Charisma F, Pertac II...

journal_title：American journal of dentistry

authors： Stavridakis MM,Lutz F,Johnston WM,Krejci I

更新日期：2003-12-01 00:00:00

abstract：PURPOSE:A novel overnight bleaching system containing 19% sodium percarbonate and silicone film forming agents (Crest Night Effects) is described, along with research supporting the substantivity of the product on tooth surfaces and its resulting whitening efficacy. METHODS:Nine adult volunteers were enrolled in a stu...

journal_title：American journal of dentistry

authors： Date RF,Yue J,Barlow AP,Bellamy PG,Prendergast MJ,Gerlach RW

更新日期：2003-11-01 00:00:00

abstract：PURPOSE:To determine if irradiating composites in a laboratory tungsten-halogen light-curing unit produced equal flexural properties to stepwise hand-curing with a tungsten-halogen lamp. METHODS:Bars (n = 10) of nine commercial composites were formed by light-curing in square glass tubes (2 x 2 x 25 mm). Flexure stren...

journal_title：American journal of dentistry

authors： Ferracane JL,Ferracane LL,Musanje L

更新日期：2003-10-01 00:00:00

abstract：PURPOSE:To determine the loss of enamel after a single 20-secondsapplication of a microabrasion slurry and to evaluate structural changes by means of laser fluorescence, and microscopic and optical measurements. METHODS:Defined buccal areas with a diameter of 2 mm from 16 extracted human molars were demineralized for ...

journal_title：American journal of dentistry

authors： Schmidlin PR,Göhring TN,Schug J,Lutz F

更新日期：2003-09-01 00:00:00

abstract：PURPOSE:To evaluate the micro-shear bond strengths to superficial coronal dentin and the floor of the pulp chamber using two dentin bonding systems and to compare the ultrastructure of the resin-dentin interface of the two regions. METHODS:30 non-carious molars were used to obtain 2 mm thick slabs of coronal dentin an...

journal_title：American journal of dentistry

authors： Toba S,Veerapravati W,Shimada Y,Nikaido T,Tagami J

更新日期：2003-09-01 00:00:00

abstract：PURPOSE:To measure and compare the shear bond strengths to porcelain of two composites used with each of two different porcelain bonding systems. METHODS:40 porcelain specimens were mounted in acrylic resin, ground flat using 120 and 320 grit sandpaper, and randomly divided into four groups of 10 for specimen fabricat...

journal_title：American journal of dentistry

authors： Knight JS,Holmes JR,Bradford H,Lawson C

更新日期：2003-08-01 00:00:00

abstract：PURPOSE:To compare the effects of different image processing modes (filters) on the reproducibility and validity of the assessment of interproximal carious lesions viewed in digitized radiographic images. MATERIALS AND METHODS:Variables studied were film type, exposure time, and tissue scatter radiation. Images were a...

journal_title：American journal of dentistry

authors： Sanden E,Koob A,Hassfeld S,Staehle HJ,Eickholz P

更新日期：2003-06-01 00:00:00

abstract：PURPOSE:To investigate the influence of different curing methods used to achieve softstart polymerization on the marginal adaptation of a resin-based composite in Class V restoration. MATERIALS AND METHODS:Class V cavities, with the gingival wall located 1 mm below the cemento-enamel junction, were prepared on buccal ...

journal_title：American journal of dentistry

authors： Muangmingsuk A,Senawongse P,Yudhasaraprasithi S

更新日期：2003-04-01 00:00:00

abstract：PURPOSE:To evaluate the durability of a new open sandwich restoration with, as shown in a previous scanning electron microscope study, improved interfacial adaptation. A polyacid-modified resin-based composite (PMRC; compomer) was placed as an intermediate layer and covered with resin composite (RC). A direct RC restor...

journal_title：American journal of dentistry

authors： Lindberg A,van Dijken JW,Lindberg M

更新日期：2003-02-01 00:00:00

abstract：PURPOSE:To evaluate the effects of a fluoride-releasing resin designed for amalgam bonding on secondary caries formation in primary teeth restored with amalgams. MATERIALS AND METHODS:Primary teeth with caries-free buccal and lingual surfaces were selected and underwent a fluoride-free prophylaxis. Cavity preparations...

journal_title：American journal of dentistry

authors： Hicks J,Milano M,Seybold S,García-Godoy F,Flaitz C

更新日期：2002-12-01 00:00:00

abstract：PURPOSE:To determine the effect of self-etching primer application method on enamel bond strength. MATERIALS AND METHODS:Five commercial self-etching primer systems, Imperva Fluoro Bond, Mac Bond II, Clearfil Liner Bond II sigma, Clearfil SE Bond and Unifil Bond were used. Bovine mandibular incisors were mounted in se...

journal_title：American journal of dentistry

authors： Miyazaki M,Hinoura K,Honjo G,Onose H

更新日期：2002-12-01 00:00:00

abstract：PURPOSE:To clinically evaluate the 3-year performance of a one-bottle dentin adhesive in the restoration of non-carious cervical lesions (NCCLs) with resin composite. MATERIALS AND METHODS:105 NCCLs were restored with either AElite Flow, Bisco Glaze (both flowable resin-based composites) or Silux (a microfilled resin-...

journal_title：American journal of dentistry

authors： Tyas MJ,Burrow MF

更新日期：2002-10-01 00:00:00

abstract：PURPOSE:Recently, a new powered toothbrush has been marketed with a design that fundamentally differs from other marketed powered toothbrushes, in that it incorporates a round oscillating head, in conjunction with fixed bristles. The objective of this study was to compare the plaque removal efficacy of a control manual...

journal_title：American journal of dentistry

authors： Bartizek RD,Biesbrock AR

更新日期：2002-09-01 00:00:00

abstract：PURPOSE:To determine, whether different tooth colored materials and application techniques influence the proximal contact strengths (PCS) in vitro. MATERIALS AND METHODS:Standardized MO-cavities for direct restorations were prepared into 360 artificial lower first molars. Eight groups were formed (n = 45) and restored...

journal_title：American journal of dentistry

authors： Klein F,Keller AK,Staehle HJ,Dörfer CE

更新日期：2002-08-01 00:00:00

abstract：PURPOSE:To describe the effect of Sonicare power toothbrush on removing chlorhexidine stains from human teeth. MATERIALS AND METHODS:Two cases with chlorhexidine staining were treated with Sonicare power toothbrush for a 4-week period. Clinical evaluations occurred at baseline, 2 weeks from baseline and 4 weeks from b...

journal_title：American journal of dentistry

authors： García-Godoy F,Ellacuria J

更新日期：2002-08-01 00:00:00

abstract：PURPOSE:To quantitatively measure the amount of fluoride, hydroxy ion and hydroxyethyl methacrylate (HEMA) released from various light-cured restorative materials. MATERIALS AND METHODS:Three resin-modified glass-ionomer cements (RMGI): Photac-Fil Aplicap, Vitremer, and Fuji II LC and two polyacid-modified resin-based...

journal_title：American journal of dentistry

authors： Kawai K,Takaoka T

更新日期：2002-06-01 00:00:00

abstract：:The sealing ability of restorations is an important factor in order to prevent or reduce marginal gaps, which are often associated with postoperative sensitivity, caries and pulp disease. Usually the sealing ability of a new material is tested under laboratory conditions before being introduced on the market. However,...

journal_title：American journal of dentistry

authors： Ferrari M,García-Godoy F

更新日期：2002-04-01 00:00:00

abstract：PURPOSE:To compare the Knoop hardness of different thicknesses of resin composite irradiated using either a plasma arc curing (PAC) light, or a quartz tungsten halogen (QTH) light. MATERIALS AND METHODS:A 2.5-mm diameter hole was drilled through the center of 2, 3, 4, and 5-mm thick discs of enamel and dentin. This ho...

journal_title：American journal of dentistry

authors： Price RB,Dérand T,Loney RW,Andreou P

更新日期：2002-02-01 00:00:00

abstract：:Since their introduction in the market, some 30 yrs ago, the biocompatibility aspects of glass-ionomer cements (GICs) have been intensively studied. In general, cytotoxicity of fully set conventional preparations in previous studies was shown to be minimal. However, a resin-modified preparation proved to be cytotoxic ...

journal_title：American journal of dentistry

authors： Sidhu SK,Schmalz G

更新日期：2001-12-01 00:00:00

abstract：PURPOSE:To quantify the minimum necessary Class I cavity preparation lateral wall heights (LWH) for a cavity preparation 0.8 mm in width and extending to the dentin-enamel junction in a set of extracted human permanent posterior teeth. MATERIALS AND METHODS:183 bucco-lingual or mesio-distal undecalcified sections were...

journal_title：American journal of dentistry

authors： Boston DW

更新日期：2001-10-01 00:00:00

abstract：PURPOSE:To determine the fracture resistance of teeth, following treatment with various types of adhesive restorations. MATERIALS AND METHODS:5 0 caries-free, extracted human molars were randomly divided into five groups consisting of 10 molars each. MOD cavities were prepared in 40 molars with a width in the facio-li...

journal_title：American journal of dentistry

authors： Bremer BD,Geurtsen W

更新日期：2001-08-01 00:00:00

abstract：PURPOSE:To examine the composite-to-dentin shear bond strengths over 2 yrs of three chemically different single bottle dentin adhesives: water-based Syntac Single Component (SSC); acetone-based Prime & Bond 2.1 (PB), and; ethanol-based and filled OptiBond Solo (OS). MATERIALS AND METHODS:Extracted human molars stored ...

journal_title：American journal of dentistry

authors： Meiers JC,Young D

更新日期：2001-06-01 00:00:00

abstract：PURPOSE:To compare the safety and efficacy of two oscillating-rotating power toothbrushes, the rechargeable Braun Oral-B D8 and the battery-powered Colgate Actibrush. MATERIALS AND METHODS:This was a randomized, examiner-blind, parallel-group study, carried out over 3 months of product use, involving a total of 113 he...

journal_title：American journal of dentistry

authors： Conforti NJ,Chaves ES,Liebman J,Bowman JP,Warren PR,Cugini M

更新日期：2001-04-01 00:00:00

abstract：PURPOSE:This in vitro study determined if Er-YAG laser used in instead of acid-etching influenced artificial secondary caries formation in enamel and root surfaces. MATERIALS AND METHODS:Class V cavities were prepared in buccal and lingual surfaces of 10 extracted caries-free molars, with cervical margins in the root ...

journal_title：American journal of dentistry

authors： Ceballos L,Toledano M,Osorio R,García-Godoy F,Flaitz C,Hicks J

更新日期：2001-02-01 00:00:00

abstract：PURPOSE:To evaluate the incidence of occlusal caries and the rates of retention using Variglass VLC (polyacid-modified resin) as an occlusal sealant. MATERIALS AND METHODS:The sample consisted of 185 school children (6-8 yr-old), with sound unsealed permanent first molars. Sealants were applied on the upper and lower ...

journal_title：American journal of dentistry

authors： Pereira AC,Pardi V,Mialhe FL,Meneghim MC,Basting RT,Werner CW

更新日期：2000-12-01 00:00:00

abstract：PURPOSE:To describe the potential of adhesive luting procedures with respect to (1) material characteristics and classifications, (2) film thickness, (3) overhang control, (4) bonding to different inlay materials, (5) adhesion to tooth substrates and the problem of hypersensitivities, (6) wear of luting composites, and...

journal_title：American journal of dentistry

authors： Krämer N,Lohbauer U,Frankenberger R

更新日期：2000-11-01 00:00:00

abstract：PURPOSE:To compare the microleakage and bond strength exhibited by two light-cured, filled dentin bonding agents, a resin cement, and cavity varnish. MATERIALS AND METHODS:The four test groups of lining agents for amalgam restorations included (LF) Light-cured, Filled resin (Clearfil Liner Bond 2); (LCF) light- and ch...

journal_title：American journal of dentistry

authors： Winkler MM,Moore BK,Rhodes B,Swartz M

更新日期：2000-10-01 00:00:00

abstract：PURPOSE:To assess in vitro the stain removal efficacy of two new antiplaque/antigingivitis dentifrices utilizing a modification of a previously validated Stookey method. MATERIALS AND METHODS:The modifications to the original Stookey method are the following: (1) study design; three 5 x 5 Latin Squares were employed t...

journal_title：American journal of dentistry

authors： Yu D,Schemehorn BR,Luo D,Kohut BE,Parikh R,Santos SL

更新日期：2000-09-01 00:00:00

abstract：PURPOSE:To compare, with the use of a resin replica technique, surface features of deep, acid-conditioned dentin from vital human molars that were anesthetized with an anesthetic: Group 1: without a vasoconstrictor (Mepivacaine 3%), and Group 2: containing a vasoconstrictor (Lidocaine 2% with 1:80,000 epinephrine). MA...

journal_title：American journal of dentistry

authors： Itthagarun A,Tay FR

更新日期：2000-08-01 00:00:00

abstract：PURPOSE:To evaluate clinically and microscopically the human pulp response when directly capped with an adhesive system or calcium hydroxide over short (9-12 days) and long (53-204 days) experimental periods. MATERIALS AND METHODS:Fifty-one sound human premolars scheduled for orthodontic extraction, had their pulp hor...

journal_title：American journal of dentistry

authors： Pereira JC,Segala AD,Costa CA

更新日期：2000-06-01 00:00:00

abstract：PURPOSE:To determine the tensile bond strength of three filled and two unfilled adhesives applied to bovine dentin. MATERIALS AND METHODS:Fragments of the labial dentin of bovine incisors were embedded in PVC cylinders with self-cure acrylic resin, and ground flat using 200 grit and 600 grit sandpaper. The following a...

journal_title：American journal of dentistry

authors： Braga RR,Cesar PF,Gonzaga CC

更新日期：2000-04-01 00:00:00

abstract：PURPOSE:To investigate the safety and efficacy of a new toothbrush with a novel brush head design (Oral-B CrossAction) in comparison with seven leading manual brushes. MATERIALS AND METHODS:Seven independent clinical studies, each involving approximately 100 healthy subjects from a general population, were carried out...

journal_title：American journal of dentistry

authors： Cronin MJ,Dembling WZ,Low MA,Jacobs DM,Weber DA

更新日期：2000-03-01 00:00:00

abstract：PURPOSE:To examine and evaluate the topographies of Vita Mark II and Dicor MGC surfaces by SEM after simulating the common clinical procedures. MATERIALS AND METHODS:Twelve (12) samples of Dicor MGC and 12 samples of Vita Mark II were milled on a Cerec, a computer-controlled machine. Three cut surfaces were observed a...

journal_title：American journal of dentistry

authors： Estafan D,Martin KU,Dussetschleger F,Estafan A

更新日期：2000-02-01 00:00:00

abstract：PURPOSES:To determine, over the period of 1 month, (a) the degree of water sorption, and (b) the change in dimension, of four bonding resins and one low viscosity resin. MATERIALS AND METHODS:Six specimens of bonding resin (Prisma Universal Bond 3, All-Bond 2, Bondwell LC, and LB Bond from the Clearfil Liner Bond II s...

journal_title：American journal of dentistry

authors： Burrow MF,Inokoshi S,Tagami J

更新日期：1999-12-01 00:00:00

abstract：PURPOSE:To investigate the inhibition of artifical secondary caries around restorations placed after removal of artificial caries by pulsed CO2 laser irradiation and by mechanical means. MATERIALS & METHODS:Beveled cavities were prepared mechanically on the facial surfaces of extracted human molars. Each cavity was su...

journal_title：American journal of dentistry

authors： Konishi N,Fried D,Staninec M,Featherstone JD

更新日期：1999-10-01 00:00:00

abstract：PURPOSE:To evaluate the 6-week effect on natural extrinsic dental stain from the use of a dentifrice containing 10% aluminum oxide, 1500 ppm sodium monofluorophosphate in a precipitated calcium carbonate (PCC) base or a second dentifrice containing 0.5% calcium peroxide (CP), 1500 ppm sodium monofluorophosphate in a PC...

journal_title：American journal of dentistry

authors： Ayad F,Arcuri H,Brevilieri E,Laffi S,Lemos AM,Yoshioka M,Baines E,Sheth J,DeVizio W

更新日期：1999-08-01 00:00:00

abstract：PURPOSE:To evaluate the effect of pulse activation light-curing of resin-based composites on the stress reduction at the enamel surface. MATERIALS AND METHODS:The rate of polymerization of a resin-based composite known to be accompanied by high contraction stress was examined by its surface hardness. The effects of po...

journal_title：American journal of dentistry

authors： Kanca J 3rd,Suh BI

更新日期：1999-06-01 00:00:00

abstract：PURPOSE:To evaluate the suitability of bovine coronal and root dentin as substitutes for human primary and permanent dentin in shear bond strength tests for dentin adhesives. MATERIALS AND METHODS:30 bovine permanent central incisors, 30 human primary and 30 human third molars were cut mesiodistally. The pulpal and bu...

journal_title：American journal of dentistry

authors： Schilke R,Bauss O,Lisson JA,Schuckar M,Geurtsen W

更新日期：1999-04-01 00:00:00