Abstract：
:Standardized class 4 cavities were prepared in bovine incisors and restored with a microfilled composite resin. The composite restorations were retained either by acid etching technique (AET) alone or by acid etching technique in combination with a self-threading retentive pin. Pins covered with a bonding/opaquer coating (PCR pin) and uncovered pins (FO pin) were used. After having been aged for 3 days, the fracture resistance of the restorations was determined with a Universal Testing Machine. The restorations were loaded at an angle of 45 degrees. The restorations retained by AET and a PCR pin showed the highest failure load. The restorations accomplished with AET and a FO pin yielded the lowest fracture load. The fracture toughness of the restorations retained by AET and a PCR pin was slightly but statistically significant, higher compared to the restorations exclusively attached by acid etching technique. It was concluded that there was only a small increase of fracture toughness of large class 4 composite restorations if the acid etching technique was combined with the application of bonding/opaquer-covered retentive pins.
journal_name
Oper Dentjournal_title
Operative dentistryauthors
Attin T,Hellwig E,Hilgers RD,Zimmermann Usubject
Has Abstractpub_date
1994-05-01 00:00:00pages
110-5issue
3eissn
0361-7734issn
1559-2863journal_volume
19pub_type
杂志文章abstract：OBJECTIVES:It has been reported that bleaching generates an increase in the activity of osteoclasts in vitro. We quantified the RANK-L and IL-1β biomarkers in a double-blind, randomized clinical trial evaluating the in vivo effect of hydrogen peroxide (35%) and peroxide carbamide (37%) six months after whitening. METH...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/18-023-C
更新日期：2019-11-01 00:00:00
abstract：PURPOSE:This study evaluated the amount of residual yellow in cured resin composites when polymerizing with either a quartz-tungsten-halogen (QTH) or blue light-emitting diode (LED). MATERIAL AND METHODS:Twelve shades (bleaching to conventional shades) of microfill, hybrid and microhybrid resin composite specimens (n ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/06-129
更新日期：2007-09-01 00:00:00
abstract：OBJECTIVES:This study evaluated the bond strength of luting systems for bonding glass fiber posts to root canal dentin. The hypothesis tested was that there are no differences in bond strength of glass fiber posts luted with different cement systems. METHODS:Forty bovine incisors were randomly assigned to five differe...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/11-035-L
更新日期：2012-01-01 00:00:00
abstract：OBJECTIVES:The aim of this investigation was to test the tensile bond strength (TBS) between different computer-aided-design/manufacturing (CAD/CAM) ceramics after conditioning using different universal adhesive systems and resin composite cement. METHODS AND MATERIALS:Substrates of four CAD/CAM ceramics-1) VITABLOCS ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/18-017-L
更新日期：2019-07-01 00:00:00
abstract：CLINICAL RELEVANCE:Computer-aided design/computer-aided manufacturing (CAD/CAM) composite resins are susceptible to degradation by dietary solvents. Dietary counselling is prudent when placing such CAD/CAM restorations. SUMMARY:This study determined the effect of dietary solvents on the surface roughness (Ra) of direc...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/19-070-L
更新日期：2020-07-01 00:00:00
abstract：:This in vitro study assessed the effect of a step-cure light curing method on resin/dentin bond strength on the buccal wall of Class I cavities in human teeth. Occlusal enamel was removed to expose a flat dentin surface. Twenty four box-shaped cavities (C-factor = 4.5) were prepared in dentin. Prime&Bond 2.1 was appli...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/05-37
更新日期：2006-05-01 00:00:00
abstract：:Most manufacturers of dental adhesives have both a total-etch adhesive and a simplified self-etching adhesive available on the market. This study measured the enamel microtensile bond strengths of five pairs of enamel adhesives as a function of enamel roughness. The proximal surfaces of 25 extracted mandibular molars ...
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：2005-07-01 00:00:00
abstract：:This study was designed to compare strength, elastic modulus (stiffness), and hardness for five composite resin materials that are used for laboratory-fabricated posterior composite restorations. Ten specimens of each material were processed according to the manufacturer's instructions. Statistical analysis indicated ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1994-11-01 00:00:00
abstract：:Detailed and accurate impressions are made when the oral environment is dry during the impression process. Maintaining a dry field on medically, physically, or emotionally compromised patients can be very challenging. If not achieved, it may compromise dental care and accurate outcomes. This article describes a techni...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/11-290-T
更新日期：2014-01-01 00:00:00
abstract：INTRODUCTION:Adding antibacterial agents to a dentin conditioner used for a glass ionomer cement (GIC) has been shown to be antibacterial; however, it is not known whether this antimicrobial conditioning agent affects the bond strength to dentin in situ. This study applied GIC to antibacterial conditioned dentin withou...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2005-05-01 00:00:00
abstract：:This study compared the slice method of measuring microleakage to the whole-wall method. Forty-eight Class V direct metal restorations were placed in the buccal and lingual surfaces of 24 human molars. Following thermocycling and storage in 2% methylene blue stain for 12 hours, the teeth were sectioned and the restora...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2002-11-01 00:00:00
abstract：:This study examined the relationship between the bond agent application duration and the dentin bond strength of several single-application bonding systems. The restorative material/ bonding systems used were Reactmer, with its single-application bonding system Reactmer Bond (RB, Shofu Inc, Kyoto, Japan); Palfique Est...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2002-05-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to investigate the clinical performance and to validate the Lesion Activity Assessment (LAA) in conjunction with the International Caries Detection and Assessment System (ICDAS) for occlusal caries diagnosis in permanent teeth. METHODS:Patients with erupted or partially erupted thir...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/13-332-C
更新日期：2015-09-01 00:00:00
abstract：OBJECTIVE:This clinical study aimed to assess the efficacies of mineral trioxide aggregate (MTA) and calcium hydroxide [Ca(OH)2] in the treatment of deep carious lesions by the direct complete caries removal technique. METHODS AND MATERIALS:A total of 100 permanent molar/premolar teeth were capped with either Ca(OH)2 ...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/16-110-C
更新日期：2017-09-01 00:00:00
abstract：:This study investigated the effect of conventional and acidified casein phosphopeptide-amorphous calcium phosphate-containing crèmes (CPP-ACP and ACPP-ACP) on dentin permeability (DP) before and after acid challenge, using a fluid-flow measuring device and scanning electron microscopic (SEM) examination. Fifty dentin ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/17-382-L
更新日期：2019-09-01 00:00:00
abstract：:This in vitro study evaluated the amount of fluoride released from fluoride-containing materials over a period of 28 days. Six disk samples (2.06 +/- 0.06 cm2) were prepared of each material and divided at random into seven groups: Group 1: Chelon-Fil; Group 2: Chelon-Silver; Group 3: VariGlass; Group 4: Dyract; Group...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1996-09-01 00:00:00
abstract：:The objective of this study was to evaluate the effect of surface sealants and polishing delay time on a nanohybrid resin composite roughness and microhardness. Eighty disc specimens were made with a nanohybrid resin (Esthet-X HD, Dentsply). The specimens were divided into two groups (n=40) according to polishing time...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/17-048-L
更新日期：2018-07-01 00:00:00
abstract：OBJECTIVE:This study evaluated the importance of enamel at the cervical margin for support and retention of a class II composite restoration in relation to fracture strength, fracture mode, and leakage. METHODS:Sixty-five newly extracted teeth were randomly divided into five groups. Within each group, standardized cla...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/10-126-L
更新日期：2011-03-01 00:00:00
abstract：PURPOSE:This study evaluated the effect of thermocycling on the microtensile bond strength of four adhesive luting agents to GN-I CAD-CAM ceramic. The hypothesis tested was that thermocycling did not affect bonding effectiveness, irrespective of the luting agents used. MATERIALS AND METHODS:Ceramic specimens of two di...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/06-106
更新日期：2007-07-01 00:00:00
abstract：:This study evaluated the microleakage of resin-modified glass ionomer, flowable compomer and flowable resin composite restorations on a Class V cavity of simulated advanced root caries under a flexural load cycling condition. Thirty-six non-carious human maxillary premolars were mounted in cylindrical acrylic resin mo...
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：2005-03-01 00:00:00
abstract：:A fundamental issue of restorative treatment is assessing the different conditions of cases not only from tooth-to-tooth but also from the activity of each caries lesion and the size of the cavity. In addition, restorative treatment is sometimes carried out for prosthetic and cosmetic purposes and involves cutting sou...
journal_title：Operative dentistry
pub_type：
doi：
更新日期：2002-05-01 00:00:00
abstract：:Excessive etching of the dentin may decrease bond strength because the adhesive may fail to completely infiltrate to the base of the over-etched demineralized collagen network. The purpose of the present study was to evaluate the influence of increasing etching times on the microtensile bond strength of Single Bond an...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1999-05-01 00:00:00
abstract：CLINICAL RELEVANCE:The use of laser light during bleaching will not reduce the incidence or severity of sensitivity and will not increase the degree of color change compared with nonlaser light sources. SUMMARY:Objective: To evaluate whether the use of laser during in-office bleaching promotes a reduction in dental se...
journal_title：Operative dentistry
pub_type： 杂志文章,meta分析
doi：10.2341/19-064-L
更新日期：2020-11-01 00:00:00
abstract：:This in vitro study investigated the effects of a thin layer of flowable composite or compomer on microleakage occurring in Class II packable and nanofilled composite restorations that extend apical to the cemento-enamel junction (CEJ). The current study also investigated any differences in microleakage that occur bet...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/08-91
更新日期：2009-05-01 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 study compared the thickness of the hybrid layer formed using Scotchbond Multi-Purpose Plus, Single Bond 2, Prime & Bond 2.1 and Xeno III on a dentin surface prepared with a diamond bur in a high speed handpiece or prepared with an Er:YAG laser used with two parameters of pulse energy (200 and 400 mJ) and two par...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/07-84
更新日期：2008-05-01 00:00:00
abstract：:Dental fluorosis is a developmental disturbance of enamel caused by excessive fluoride on ameloblasts during enamel formation. Patients often present to the dentist with a main goal of improving their esthetic appearance. This case report describes a minimally invasive technique for treating a severe case of enamel fl...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/12-238-S
更新日期：2013-07-01 00:00:00
abstract：:This study compared the degree of marginal leakage of a compomer in Class V cavities of human primary molars prepared by a conventional dental bur and air abrasion with or without acid etching. Fifty-six non-carious extracted primary molars were randomly divided into four groups (n=14) to be prepared by four technique...
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：2005-03-01 00:00:00
abstract：:This study evaluated the biocompatibility of contemporary bulk-fill resin-based composites (RBCs) including PRG (pre-reacted glass ionomer) materials based on the International Organization for Standardization 10993. In addition, the effect of composite thickness on cytotoxicity was also assessed. Two standard composi...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/15-059-L
更新日期：2015-11-01 00:00:00
abstract：STATEMENT OF THE PROBLEM:Precise shade matching can be one of the most difficult tasks for the dentist and some variables may influence the process of shade comparison. PURPOSE OF THE STUDY:This study tested the differences in shade perception between genders, the influence of the observer's clinical experience, and t...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/10-057-C
更新日期：2012-05-01 00:00:00
