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 were randomly selected for one of the following treatments: a) 5N HCl followed by 5%NaOCl; b) 5%NaOCl; c) 5%NaOCl and sonication; d) 5%NaOCl followed by 5N HCl. The results indicated that the HCl-NaOCl treatment could obscure the "true" HL in the unpolished a/d interfaces that were actually porous. The composition and morphology of the polished interface specimens were largely unchanged by the above treatments. Descriptions of HL quality are commonly based on the acid reactivity of polished specimens. The results of this study indicate that polishing dramatically alters the native composition, increasing its acid-resistance, and thus, this procedure could lead to false conclusions about HL quality.
journal_name
Oper Dentjournal_title
Operative dentistryauthors
Wang Y,Spencer Pkeywords:
subject
Has Abstractpub_date
2004-11-01 00:00:00pages
650-5issue
6eissn
0361-7734issn
1559-2863journal_volume
29pub_type
临床试验,杂志文章,随机对照试验abstract：:This study compares volumetric changes and rates of shrinkage during different stages of polymerization of dental resin composites and compomers exposed to the same total energy by using two different combinations of power density and exposure duration. A hybrid composite and its equivalent flowable and a compomer and...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2003-09-01 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：OBJECTIVES:To evaluate the beam profile and the spectral output of monowave and polywave light-emitting diodes (LEDs) and their influence on the degree of conversion (DC) of bulk fill composites. METHODS:A monowave LED (Smartlite Focus, Dentsply) and a polywave LED (Valo Cordless, Ultradent) were characterized using a...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/16-164-L
更新日期：2017-07-01 00:00:00
abstract：:This study evaluated in vitro the necessity of retention grooves in approximal boxes in class 2 preparations with faciolingually wide occlusal extensions (occlusal isthmus width 1.8 mm). Thirty-six class 2 mesio-occlusal cavities were prepared in sound human maxillary premolar teeth and divided into three groups of 12...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1993-03-01 00:00:00
abstract：:The effect of microabrasion on human enamel has been well documented; however, no information is available on its effect on dentin or restorative materials. The purpose of this study was to evaluate the effect of the microabrasion technique on the surface roughness of restorative materials and enamel and dentin surfac...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1996-03-01 00:00:00
abstract：:This study investigated the effectiveness of cure and post-gel shrinkage of three visible light-cured composite resins (In Ten-S [IT], Ivoclar Vivadent; Z100 [ZO], 3M-ESPE; Tetric Ceram [TC], Ivoclar Vivadent) when polymerized with a very high intensity (1296 +/- 2 mW/cm2) halogen light (Astralis 10, Ivoclar Vivadent)...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2003-07-01 00:00:00
abstract：:Retained primary teeth in the smile zone can cause patient dissatisfaction, especially if associated with malposition of teeth. Orthodontic and prosthetic treatment options to treat the situation may not be accepted by some patients. Therefore, these patients tend to maintain their primary teeth and seek different est...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/15-363-S
更新日期：2017-03-01 00:00:00
abstract：:For many years, operative dentistry has been using regenerative approaches to treat dental disease. The use of calcium hydroxide to stimulate reparative or reactionary dentin is clearly an example of such a therapeutic strategy. The advent of tissue engineering is allowing dentistry to move forward in the use of regen...
journal_title：Operative dentistry
pub_type： 杂志文章,评审
doi：10.2341/06-000
更新日期：2006-11-01 00:00:00
abstract：:Even though accuracy and inter-examiner variation assessments of borderline restorative items have been previously reported, no attempt has been made to replicate the effect of cumulative, sequential diagnostic and treatment planning decisions. This study assesses the cumulative effect of factors indicating restorativ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2000-07-01 00:00:00
abstract：CLINICAL RELEVANCE:When a resin nanoceramic inlay is cemented using self-adhesive cement, a universal dentin adhesive can be applied to the prepared cavity. The application of the adhesive before self-adhesive cement placement provides similar or better interfacial adaptation than without the adhesive. SUMMARY:Purpose...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/19-141-L
更新日期：2020-11-01 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：: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：:Veneers were fabricated by CEREC CAD-CAM and the platinum foil techniques for standardized preparations on 10 artificial teeth. Mesial preparation contacts were broken, but distal contacts remained intact. The veneers were cemented in a standardized manner to their teeth. The veneers and their attached cement were emb...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1997-05-01 00:00:00
abstract：:This study evaluated the effect of fractured or sectioned fragments on the fracture strength recovery of four techniques used for reattachment and resin composite buildups. Ninety-one sound, permanent lower central incisors were used. Half the teeth were fractured in the incisal-proximal edge; the other half had the i...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2004-05-01 00:00:00
abstract：OBJECTIVE:To evaluate the influence of chlorhexidine with different application methods on the microtensile bond strength (microTBS) to dentin in Class I cavities. METHODS:Flat dentinal surfaces with Class I cavities (4 mm long, 4 mm wide, 2 mm deep) in 50 molars were bonded with Adper Single Bond 2 etch-and-rinse adh...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/09-360-L
更新日期：2010-11-01 00:00:00
abstract：:This study evaluated the degree of conversion (%DC) of luting agents around ceramic inlays placed in deep natural cavities. Thirty-six cylindrical Class I cavities (diameter = 4 mm, depth = 4 mm) were prepared in freshly extracted human teeth and randomly divided according to the luting materials used for luting CAD/C...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/10-012-L
更新日期：2010-09-01 00:00:00
abstract：:This study determined the relationship between marginal adaptation to dentin cavity preparations, tensile bond strength of the restorations, and mechanical properties of the composites. Contraction gaps, tensile bond strengths, flexural strengths, and Young's modulus of eight commercial resin composites were determine...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1999-11-01 00:00:00
abstract：:This study evaluated the effect of different chairside polishing systems on the surface roughness and topography of monolithic zirconia. Thirty-five monolithic zirconia specimens (Lava PLUS, 3M ESPE) were fabricated and divided into five groups of seven and polished with the following: Group 1 (WZ)-Dura white stone fo...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/15-064-L
更新日期：2016-07-01 00:00:00
abstract：:The reasons for placement and replacement and the longevity of amalgam restorations were recorded by 62 Italian private practitioners. The survey compiled 1935 amalgam restorations inserted due to primary caries (59%) and failed restorations (41%). The clinical diagnosis of secondary caries constituted 59% of failures...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1992-03-01 00:00:00
abstract：:In vitro studies to assess bond strength between resins and ceramics have used surfaces that have been ground flat to ensure standardization; however, in patients, ceramic surfaces are irregular. The effect of a polished and unpolished ceramic on bond strength needs to be investigated. Sixty ceramic specimens (20×5×2 ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/11-009-L
更新日期：2011-09-01 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：: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：OBJECTIVE:The purpose of this study was to evaluate the effects of different desensitizing agents on the prevention of root caries when applied to root surfaces. MATERIALS AND METHODS:Thirty human roots were sectioned into quarters with a 3 × 4 mm window. A desensitizer (VX, Clinpro™ XT Varnish; SP, Seal & Protect®; o...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/11-007-L
更新日期：2012-05-01 00:00:00
abstract：:Bleaching-induced tooth sensitivity (TS) is highly prevalent. OBJECTIVE:This study aimed to determine if the combination of opioids and nonopioids analgesics (Tylex) may provide a better analgesic effect. METHOD:A triple-blind, parallel, randomized two-center clinical trial was conducted with 105 healthy patients wh...
journal_title：Operative dentistry
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.2341/17-092-C
更新日期：2018-03-01 00:00:00
abstract：:This in vitro study evaluated microleakage in Class II cavities restored with dental composite and varying light-curing units and the temperature of the composite when subjected to a thermocycling test. Ninety cavities were prepared on the proximal surfaces of bovine teeth and randomly divided according to the light-c...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/10-226-LR1
更新日期：2011-01-01 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：:To protect glass-ionomer cement from moisture contamination and dehydration during initial setting, immediate application of a surface coating agent is recommended. This study compared the effect of various surface coatings on F release from glass-ionomer cement. Twenty glass-ionomer cement (Ketac Fil Aplicap) disks (...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1994-09-01 00:00:00
abstract：PURPOSE:To investigate the effect of different light-curing units and depths on the degree of conversion (DC) through Fourier transform infrared spectroscopy (FTIR) and Knoop Hardness Number (KHN) of a silorane-based composite resin (Filtek LS, 3M ESPE, St Paul, MN, USA) (LS). MATERIALS AND METHODS:LS specimens mounte...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/12-479
更新日期：2014-05-01 00:00:00
abstract：:The current study evaluated the chromatic influence of high, medium and low value composites on a dentin composite substrate (A2 shade) using spectrophotometric analysis. The specimens were divided into the following four groups: a) control (CG), entirely composed of dentin composite (n = 5); b) high value (GHV), dent...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/09-44-L
更新日期：2010-01-01 00:00:00
abstract：:The aims of this study were to investigate 1) the influence of cleansing methods after saliva contamination and 2) aging conditions (thermocycling and water storage) on zirconia shear bond strength (SBS) with a resin cement. One hundred and eighty zirconia specimens were sandblasted with 50 μm aluminum oxide particles...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/13-323-L
更新日期：2015-03-01 00:00:00
