Abstract：
:Of the many factors under their control, clinicians can manipulate light-exposure duration but must deal with a set intensity of light emitted from the dental curing unit. This research investigates the interdependence of exposure duration and source intensity on resin cure at various depths within a simulated light-cured resin composite restoration. This wafers of composite were obtained from a simulated cylindrical restoration such that the wafer could be removed from the top or from a distance of 1, 2, and 3 mm beneath the surface. The composites used in this study were a microfill and hybrid of Universal and Gray shades. All the data concerning filler type and shade were pooled so that generalized statements could be made regarding curing of light-activated composite in general. Specimens were cured using various source intensities and for different durations at each level within the cured cylinder. The cure of the specimens resulting from the different treatments was determined using infrared spectroscopy. The results indicate a dramatic effect of depth on the cure of composite. At depths greater than 2 mm, poor cure results, and polymerization is very susceptible to changes in light intensity and exposure duration. From these results, routine exposure times of 60 seconds are recommended using light-source intensities of at least 400 mW/cm2 as measured with a commercial dental light intensity meter. Incremental layer thickness should not exceed 2 mm, with 1 mm being ideal. Sources with intensity values less than 233 mW/cm2 should not be used because of their poor cure characteristics.
journal_name
Oper Dentjournal_title
Operative dentistryauthors
Rueggeberg FA,Caughman WF,Curtis JW Jrsubject
Has Abstractpub_date
1994-01-01 00:00:00pages
26-32issue
1eissn
0361-7734issn
1559-2863journal_volume
19pub_type
杂志文章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：:Although rare, subcutaneous air emphysema can occur during dental procedures such as endodontic treatment, surgical extractions, and preparing a tooth for an indirect or direct dental restoration. We report the development of a subcutaneous air emphysema that was introduced through the periodontal ligament of an untre...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/15-155-S
更新日期：2017-09-01 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 tested the null hypothesis that there no difference between two-step and one-step self-etch adhesives in their compatibility with these composites. The microtensile bond strengths (microTBS) of two two-step systems (Clearfil SE Bond, Kuraray and Tyrian SPE/One-Step Plus, BISCO) were compared with two one-st...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2003-11-01 00:00:00
abstract：:This study evaluated the effects of two in-office bleaching agents (Beyond and Opalescence Boost) with different pH on the structure and mechanical properties of human enamel in vitro and in situ. One hundred and eight enamel slabs were obtained from freshly extracted premolars. The specimens were randomly distributed...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/11-173-L
更新日期：2013-01-01 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：10.2341/1559-2863-42.6.680
更新日期：2017-11-01 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：:This study investigated the effect of two base materials with different elastic moduli (F2000 and Vitrebond) on the fracture load of machinable ceramic inlays. Standardized MOD cavities were prepared in 18 human maxillary first or second premolars. The teeth were randomly assigned to three groups of six premolars each...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/05-3
更新日期：2006-03-01 00:00:00
abstract：:This research investigated the effects of wet and dry conditions of phosphoric acid etched dentin on resin bonding and determined the optimum moisture condition for resin bonding using an ethanol-based one-bottle adhesive system. Bovine dentin surfaces were etched with 35% phosphoric acid and rinsed with water. Under ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2002-11-01 00:00:00
abstract：OBJECTIVE:To evaluate, through the application of different dentin bonding systems, the influence of wetness on shear bond strength in enamel. METHODS:This study evaluated three etch-and-rinse adhesive systems (Scotchbond MP [used with and without primer]; Singlebond; and Prime&Bond 2.1) and two self-etching adhesive ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/10-163-L
更新日期：2011-05-01 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：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
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：OBJECTIVES:The aim of this study was to quantify the internal void volume formation in commercially available, resin composites inserted using conventional or sonic insertion methods, and analyzed using three-dimensional (3D) micro-computed tomography (μCT). METHODS AND MATERIALS:Four resin composites were evaluated: ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/16-331-L
更新日期：2018-03-01 00:00:00
abstract：OBJECTIVES:This study was performed to 1) quantify dentists' treatment thresholds for occlusal primary caries; 2) determine if the patient's age affects dentists' decisions to surgically treat these carious lesions; and 3) test the hypothesis that patients', dentists', and practices' characteristics are significantly a...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/13-141-C
更新日期：2014-09-01 00:00:00
abstract：:This study examined the effect of different light activation modes for light-cured resin-based composites on the shear bond strength to dentin of two one-bottle adhesives with differing acidity. In this experimental study, a flat middle dentin surface was prepared on 110 extracted sound molars using a 600-grit polish ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/08-048-L
更新日期：2009-09-01 00:00:00
abstract：:This study compared the clinical performance of a polyacid-modified resin composite and a resin-modified glass-ionomer restorative material over two years. Thirty-four pairs of restorations of Compoglass and Fuji II LC were placed in caries-free cervical erosion/abfraction lesions without tooth preparation. Restoratio...
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：: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：: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：:V-shaped cervical cavities prepared in monkey teeth were restored with several dentin bonding systems, and the in vivo resin-dentin interfacial structures were observed under the scanning electron microscope using an argon-ion etching technique. The hybrid layer could be clearly observed; its depth was dependent on th...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1995-09-01 00:00:00
abstract：AIMS:To evaluate the effect of two composite restorative techniques (direct bulk fill vs indirect CAD/CAM) on the fracture resistance and mode of fracture of extended mesio-occlusal-distal (MOD) cavity preparations. METHODS:Fifty-one sound human mandibular third molars were divided into three groups (n=17). Extended b...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/18-013-L
更新日期：2019-05-01 00:00:00
abstract：:No data are available on the direct acute vascular effect of dental bonding materials on the dental pulp. This study investigated the effects of the components of a composite resin-bonding system on pulpal vascular diameter. Three groups of 10 male Sprague-Dawley rats (weighing 330 +/- 51 g) were used for this investi...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2000-09-01 00:00:00
abstract：:The present in vitro study concerns determination of the pre-cementation gap width of all-ceramic crowns made using an in-office digital-impression technique and subsequent computer-aided design/computer-aided manufacturing (CAD/CAM) production. Two chairside video camera systems were used: the Lava Oral scanner and C...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/12-309-L
更新日期：2014-05-01 00:00:00
abstract：CLINICAL RELEVANCE:Using a material that optimizes marginal seal when using a margin elevation technique to manage deep class II cavities should enhance clinical outcomes. SUMMARY:Objectives: The purpose of this laboratory study was to perform a tridimensional interfacial gap evaluation of class II cavities with ename...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/19-161-L
更新日期：2020-09-01 00:00:00
abstract：:The aim of the present study was to evaluate the effect of composite resin contamination with powdered and unpowdered latex gloves on the shear bond strength of etch-and-rinse and two-step self-etch adhesive systems. Standard flat dentin surfaces were prepared on the facial aspect of 120 bovine incisors and randomly a...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/11-088-L
更新日期：2012-09-01 00:00:00
abstract：:The aim of this study was to evaluate the effect of grinding with diamond burs and low-temperature aging on the material surface characteristics and bacteria adhesion on a yttrium-stabilized tetragonal zirconia polycrystalline (Y-TZP) surface. Y-TZP specimens were made from presintered blocks, sintered as recommended ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/16-108-L
更新日期：2017-11-01 00:00:00
abstract：:The purpose of this study was to evaluate the 1-year results of the dentin bond (DBS)/viscous resin liner combinations Amalgambond Plus, Tenure/Panavia, Syntac/Dual Cem, and All-Bond 2/Liner F in reducing microleakage in class 5 cavity preparations restored with an admixed or a spherical amalgam alloy and to compare t...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1998-01-01 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：:This in vitro study measured cusp deflection associated with MOD resin composite restorations in maxillary premolars with different curing light modes. Soft-start polymerization may reduce cusp deflection by reducing polymerization shrinkage stress. Forty maxillary premolars were mounted in stone and slot MOD cavities...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：
更新日期：2005-11-01 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
