Abstract：
:This study investigated the effects of an at-home bleaching gel containing 15% carbamide peroxide on the susceptibility of tooth-colored restorative materials to different staining solutions. The tooth-colored restoratives used in this study were a nano resin composite (Filtek Z350), a packable resin composite (Filtek P60), a polyacid-modified composite (Dyract AP) and a glass-ionomer cement (Ketac Molar Easymix). Each material was equally divided into two groups (n = 34): the bleaching group and the control group. This study included two treatment segments. In the first part (days 1-14), the specimens of the bleaching group were bleached with 15% carbamide peroxide gels for eight hours daily, while the specimens in the control group were stored in deionized water. Subsequently, four specimens from each group were randomly selected for observation under an environmental scanning electron microscope. In the second part (days 15-42), the samples were not bleached. Instead, they were stored in five different kinds of solutions. Color measurements for each sample were taken at six different time periods using a spectrophotometer. The data was then analyzed using SPSS statistical software. After two-weeks of bleaching, all the specimens showed statistically significant color changes compared with the control specimens. Furthermore, the bleaching agents seriously affected the surface morphology of Dyract AP and Ketac Molar Easymix. Following exposure to the staining solutions, it was found that the bleached restorative materials exhibited greater staining susceptibility than the control materials. Filtek Z350 and P60 exhibited the best color stability, while Dyract AP exhibited the least color stability.
journal_name
Oper Dentjournal_title
Operative dentistryauthors
Yu H,Pan X,Lin Y,Li Q,Hussain M,Wang Ydoi
10.2341/08-42subject
Has Abstractpub_date
2009-01-01 00:00:00pages
72-82issue
1eissn
0361-7734issn
1559-2863journal_volume
34pub_type
杂志文章,随机对照试验abstract：:The stronger the ceramic material, the longer the restoration stays in the mouth. The current study evaluated the two-year clinical performance of a strong ceramic system, IPS Empress II, with increased strength on onlay/inlay restorations of molars. Teeth from 35 patients, including three premolars and 32 molars, wer...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/08-97
更新日期：2009-07-01 00:00:00
abstract：:Many studies have shown a considerable reduction in enamel bond strength of resin composite restorations when the bonding procedure is carried out immediately after bleaching. These studies claim that a certain waiting period is needed prior to restoration to reach the original bond strength values prior to bleaching....
journal_title：Operative dentistry
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：2003-11-01 00:00:00
abstract：:This in vitro study evaluated the interfacial integrity of Class II resin composite restorations. The influence of a flowable composite and additional enamel etching was also evaluated. Deep, saucer-shaped Class II cavities were prepared in the mesial and distal proximal surfaces of 25 extracted human molars and assig...
journal_title：Operative dentistry
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：2001-01-01 00:00:00
abstract：:The nature of the hybrid layer (HL) following chemical treatment has not been resolved. The effects of chemical treatments and polishing on HL morphology and composition were investigated using micro-Raman spectroscopy and SEM. Polished and unpolished SingleBond adhesive/dentin (a/d) interfaces from the same tooth wer...
journal_title：Operative dentistry
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：2004-11-01 00:00:00
abstract：:This study investigated the microleakage associated with the repair of non-carious amalgam defects using flowable resin composite. Occlusal amalgam preparations were accomplished on 36 non-carious mandibular molars. A standardized 40-micron marginal defect was made by condensing amalgam against a mylar matrix strip. S...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2001-05-01 00:00:00
abstract：:This study evaluated the effects of acid etching of the enamel and the combination of different light sources (halogen light, light-emitting diodes [LEDs], and LED/Laser) and the bleaching product on color change, penetration of hydrogen peroxide (H2O2), and cytotoxicity over time. The color change (ΔE) and the amount...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/14-364-L
更新日期：2016-01-01 00:00:00
abstract：:Dentin bridging of 150 mechanically exposed monkey pulps to two adhesive resins [BondWell LC (BW); Clearfil Liner Bond II (LB)] and a calcium hydroxide cement [Dycal (DY)] were histopathologically evaluated at 3, 7, 14, 30, and 60 days after operation (n = 10). The dentin bridge structure was three-dimensionally recon...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2000-05-01 00:00:00
abstract：OBJECTIVES:To evaluate the bond strength of adhesive luting agents applied to caries-affected dentin (CAD). METHODS:Thirty-six noncarious human third molars were abraded to expose an occlusal dentin surface. Caries lesions were induced in half of the samples using a microcosm biofilm model. Biofilm was cultivated unde...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/14-169-L
更新日期：2015-05-01 00:00:00
abstract：PURPOSE:To investigate clinical performance of a low-shrinkage silorane-based composite resin when used for repairing conventional dimethacrylate-based composite restorations. BACKGROUND:Despite the continued development of resin-based materials, polymerization shrinkage and shrinkage stress still require improvement....
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/11-121-C
更新日期：2012-09-01 00:00:00
abstract：:The purpose of this study was to find out the degree to which eugenol-containing temporary cements or temporary filling materials affected shear bond strength of a dual-cure resin luting cement to acid-etched enamel. For this purpose 56 human caries-free third molars were embedded in acrylic resin and cross sectioned ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1998-03-01 00:00:00
abstract：OBJECTIVE:The aim of the study was to compare in Class V composite restorations marginal leakage measurements obtained with microcomputed tomography (micro-CT) and scanning electron microscopy (SEM) observations. METHODS:Class V cavities were prepared on 10 human molars and restored using Optibond FL (Kerr, Orange, CA...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/14-022-L
更新日期：2015-07-01 00:00:00
abstract：:This study investigated the effect of nonrinse conditioners (ie, Ketac Nano Primer [KNP] and GC Self Conditioner [SC]) used as substrate pretreatment and their respective paste-paste resin-modified glass-ionomer cement (RMGIC) (ie, Ketac Nano [KN] and Fuji Filling LC [FF]) on microtensile bond strength to dentin and m...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/14-030-L
更新日期：2015-05-01 00:00:00
abstract：OBJECTIVES:To evaluate the effect of application protocol in resin-enamel microshear bond strength (μSBS), in situ degree of conversion, and etching pattern of three universal adhesive systems. METHODS AND MATERIALS:Sixty-three extracted third molars were sectioned in four parts (buccal, lingual, and proximals) and di...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/15-213-L
更新日期：2016-09-01 00:00:00
abstract：PURPOSE:To evaluate the effect of different strategies for post cementation on the pullout bond strength of a double-tapered glass fiber post cemented into a root canal. MATERIALS AND METHODS:The root canals of 70 single-rooted bovine teeth (16 mm-length) were prepared to 9 mm using the preparation drill of a double-t...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/08-113
更新日期：2009-07-01 00:00:00
abstract：:On occasion we receive manuscripts that we would like to publish, but do not have the page room to include in the print journal. For the full article, please go to www.jopdentonline.org or enter the provided address into your address bar. ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/1559-2863-43.3.335
更新日期：2018-05-01 00:00:00
abstract：:Most currently marketed fluoride varnishes (FVs) have not been evaluated for their effectiveness in preventing dental caries. The objective of this study was to investigate the anticaries efficacy, measured as fluoride release into artificial saliva (AS); change in surface microhardness of early enamel caries lesions;...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/18-040-L
更新日期：2019-09-01 00:00:00
abstract：:Various core materials with different shades affect the final color of high-translucency monolithic zirconia restorations. The blue core shows the greatest color difference in final zirconia restorations followed by metal, A3 dentin-shade resin core, and white core. ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/19-238-L
更新日期：2020-12-21 00:00:00
abstract：:Four resin based materials (Compolute Aplicap, ESPE; Variolink Ultra, Vivadent; C&B Metabond, Parkell and Panavia 21, Kuraray), two carboxylate cements (Poly-F Plus, Dentsply DeTrey and Durelon Maxicap, ESPE), two glass-ionomer cements (Fuji I, GC and Ketac-Cem Aplicap, ESPE), one resin-modified glass ionomer cement (...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2000-11-01 00:00:00
abstract：:Light Emitting Diode (LED) curing units are attractive to clinicians, because most are cordless and should create less heat within tooth structure. However, questions about polymerization efficacy have surrounded this technology. This research evaluated the adequacy of the depth of cure of pit & fissure sealants provi...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2005-11-01 00:00:00
abstract：:On occasion we receive manuscripts that we would like to publish, but do not have the page room to include in the print journal. For the full article, please go to www.jopdentonline.org or enter the provided address into your address bar. ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/1559-2863-43.5.561
更新日期：2018-09-01 00:00:00
abstract：OBJECTIVE::The study aimed to evaluate teaching trends and use of materials in direct posterior restorations during a 13-year period in an Israeli dental school. METHODS::Data registered in computerized files, relating to posterior restorations performed in the student clinic during the past 13 years (2004-2016), were...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/17-361-C
更新日期：2018-11-01 00:00:00
abstract：:The available and proposed methods for determining the in vivo occlusal wear values of classes 1 and 2 restorations made of resinfilled composite materials are critically reviewed. A methodology to be used to address the fundamental question of the link between the wear of the in vivo restorations and the relevant mec...
journal_title：Operative dentistry
pub_type： 杂志文章,评审
doi：
更新日期：1991-03-01 00:00:00
abstract：:This in vitro study investigated the correlation between factors related to cavosurface marginal adaptation and microleakage in Class II cavities restored with a light- or chemical-activated resin composite. Standardized cavities were prepared in 40 molars that were randomly divided between both materials. Each of the...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/06-16
更新日期：2007-01-01 00:00:00
abstract：:A study was conducted to compare the shear bond strength of a glass-ionomer cement and glass-ionomer base to coronal and radicular dentin. Two different glass ionomers were bonded to paired coronal and radicular human dentin surfaces that had received no surface treatment or had been treated passively for 20 seconds w...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1994-07-01 00:00:00
abstract：:To evaluate the correlation between microtensile dentin bond strength (microTBS) and silver ion penetration, two total-etch 3-step and one self-etch 2-step system were investigated. OptiBond FL adhesive was applied to flat occlusal dentin on six non-carious human molars, and a resin composite "crown" was formed in 2 m...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：:Amalgam has been used in the restoration of structurally compromised posterior teeth for many years. When placing large amalgam restorations, replacement of weak cusps with restorative material is recommended to prevent tooth fracture. This recommendation can be modified with new guidelines using modern adhesive techn...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/11-082-T
更新日期：2012-07-01 00:00:00
abstract：OBJECTIVE::Computer aided design-computer aided machining (CAD-CAM) ceramic crowns are replacing ceramo-metal ones due to newly developed mechanical properties and esthetics. To obtain knowledge about their interactions due to polishing and occlusal contacts with the opposing dental enamel specimen, including surface r...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/17-153-L
更新日期：2019-01-01 00:00:00
abstract：INTRODUCTION:Limited access to interdental spaces complicates removal of excess material when placing class II composite resin restorations. Evidence-based recommendations on interproximal finishing are rare. We present novel microscalpels for this indication. The aim of the study was to test their fracture strength an...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/16-012-L
更新日期：2017-05-01 00:00:00
abstract：:The steady increase in online health information seeking by patients is ingrained in central notions of patient-centered care and shared decision-making models reflected in operative dentistry and the healthcare industry at large. More patients today seek health information prior to an appointment, communicate their f...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/14-312-LIT
更新日期：2015-09-01 00:00:00
abstract：PURPOSE:The present study aimed to investigate a novel adhesive system containing 0.2% chlorhexidine digluconate (CHX) for its ability to improve the stability of the adhesive interface compared with the use of 2% CHX as a therapeutic primer. Furthermore, the study aimed to confirm the inhibitory properties of these CH...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/12-239-L
更新日期：2013-11-01 00:00:00
