Abstract:
:This study determined the influence of light curing protocols and matrix type on the margin quality and marginal seal of Class II resin-based composite restorations. In extracted human molars, box-shaped MOD cavities with 1 mm wide interproximal bevels were prepared with cervical margins located at least 1 mm coronal to the cemento-enamel junction. The prepared teeth were mounted in a jig featuring artificial training teeth that served as adjacent teeth. A contoured sectional metal matrix band was placed in one interproximal area, and a section of a contoured transparent matrix band was placed in the opposite interproximal area. Both were kept in position using wooden wedges. After etching (35% H3PO4 gel) and the application of a three-step etch & rinse dentin adhesive (Optibond FL, Kerr), a thin layer of flowable resin-based composite (Revolution, Kerr) was applied to the interproximal margins. The cavities were restored by placing one horizontal and two oblique increments of a fine hybrid resin-based composite (Herculite XRV, Kerr). The curing protocols included one standard halogen protocol (Elipar Trilight, 3M ESPE, 40 seconds @ 800 mW/cm2), 3 halogen soft-start protocols (Step: Elipar HiLight, 3M ESPE; 10 seconds @ 150 mW/cm2, 30 seconds @ 850 mW/cm2; Ramp: Elipar TriLight, 3M ESPE, 5 seconds @ 100 mW/cm2, exponential increase for 10 seconds, 25 seconds @ 800 mW/cm2; Pulse delay: VIP Light, BISCO, cervical increment: 10 seconds @ 500 mW/cm2, occlusal increments: 3 seconds @ 200 mW/cm2, final irradiation after a 5 minute interval: 30 seconds @ mW/cm2) and 2 plasma arc high intensity protocols (PAC: Lightning Cure, ADT, 10 seconds @ 1400 mW/cm2; APO: Apollo 95E, DMDS, 2 x 3 seconds @ 1570 mW/cm2). The restored teeth were stored in 0.9% saline at 37 degrees C for 4 weeks and submitted to thermal cycling [TC] with 2500 cycles between 5 degrees C and 55 degrees C after 2 weeks. The margin quality before and after TC was analyzed in SEM using the replica technique, and the marginal seal was determined using the dye penetration test (50% AgNO3, 2 hours) at the end of the study. The matrix type did not significantly influence the quality and seal of the respective margins. For the complete restoration margin, one of the high intensity protocols (APO) produced a higher percentage of "continuous margin" compared to pulse delay irradiation after TC and lower percentages of "marginal opening" compared to halogen standard irradiation before and after TC. Halogen step irradiation produced a superior marginal seal compared to pulse delay curing at the occlusal margins; equivalent results were observed for all curing modes at the cervical margins. Neither a general advantage of soft-start irradiation nor a general disadvantage of high intensity curing was confirmed.
journal_name
Oper Dentjournal_title
Operative dentistryauthors
Hofmann N,Hunecke Adoi
10.2341/04-194keywords:
subject
Has Abstractpub_date
2006-01-01 00:00:00pages
97-105issue
1eissn
0361-7734issn
1559-2863journal_volume
31pub_type
杂志文章abstract::This study evaluated the pulp biocompatability of a new light-cured composite resin which was placed in etched glass-ionomer-lined cavities of monkey teeth. The pulpal response to this material was less than that to zinc-oxide eugenol cement in each observation period. Therefore this material seems to meet acceptable ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1991-07-01 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 evaluated the effect of an intracoronal resin composite pin on Class IV resin composite restorations. A control group of 16 bovine teeth was prepared with standardized conventional Class IV preparations. For an experimental group, 16 similar Class IV preparations were made, with the addition of an intracoro...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2000-07-01 00:00:00
abstract::Good wettability is one of the desirable physical properties of mercury-free gallium-based alloys (Gallium Alloy GF). However, wettability, while providing good adhesion to the cavity wall, has the adverse effect of causing stickiness to the inside of the capsule during mixing, and also to the metal hand instruments u...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1996-01-01 00:00:00
abstract::This study evaluated the cytotoxicity of four single component dentin bonding agents: Syntac Single Component, Prime & Bond 2.1, Single Bond and One Up Bond F. The test materials were applied on dentin discs of dentin barrier models in the same way as in the clinical procedures recommended by each manufacturer. Cell v...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2003-07-01 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::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:OBJECTIVES:This study investigated the influence of resin composite preheating temperature, light curing regimen (mode and duration) on post-gel shrinkage strain (PGSS) and degree of conversion (DC) of a restorative resin composite. METHODS:A hybrid resin composite preheated to three different temperatures (37 degrees...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/09-072-L
更新日期:2010-03-01 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: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 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:OBJECTIVES:To evaluate the efficacy of a new light-cured anesthetic gel for pain control in adults undergoing rubber dam isolation for the restorative treatment of noncarious cervical lesions (NCCLs). METHODS AND MATERIALS:This study was a randomized, split-mouth, triple-blind, controlled trial. The sample comprised 5...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/18-130-C
更新日期:2020-03-01 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 article reports the case of a patient with bilateral hypodontia of the maxillary lateral incisors who was dissatisfied with the outcome of initial orthodontic treatment, highlighting the importance of a multidisciplinary interaction among Restorative Dentistry, Orthodontics, and Implantology to achieve satisfacto...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/11-167-T
更新日期:2012-09-01 00:00:00
abstract::This in vitro study investigated the possible dehydration of dentin caused by bleaching agents. Furthermore, it tested whether protective dentin varnishes can maintain the physiological moisture of dentin during bleaching treatment. Fifty-five standardized dentin cylinders were prepared from freshly extracted bovine i...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/05-89
更新日期:2006-09-01 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::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::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
abstract::This study evaluated the influence of ceramic thickness and ceramic materials on fracture resistance of posterior partial coverage ceramic restorations. Forty extracted molars were allocated into four groups (n=10) to test for two variables: 1) the thickness of ceramic (1 mm or 2 mm) and 2) the ceramic materials (a li...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/12-459-L
更新日期:2015-03-01 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 compared the clinical performance of a nanofilled resin composite for posterior restorations with 2 microhybrid and 1 packable composite after 12 months of clinical service. Forty-two patients with at least 5 Class I or II restorations under occlusion were enrolled in this study. A total of 148 restorations...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/05-103
更新日期:2006-07-01 00:00:00
abstract::A literature review was conducted on adhesive Class I and II restorations and nondestructive in vitro tests using the PubMed/Medline database for the 1995-2010 period. The first part of this review has presented and critically appraised selected literature dealing with the quality and in vitro behavior of adhesive Cla...
journal_title:Operative dentistry
pub_type: 杂志文章,评审
doi:10.2341/12-020B-LIT
更新日期:2013-09-01 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::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::This study evaluated the effect of ascorbic acid, 500 mg every eight hours, on bleaching-induced tooth sensitivity. A triple-blind, parallel design, and placebo-controlled randomized clinical trial was conducted on 39 adults. The pills (placebo or ascorbic acid) were administered three times per day for 48 hours; the ...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/12-483-C
更新日期:2014-03-01 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::The purpose of this study was to determine if air thinning three dentin adhesives would affect bond strength to dentin. Ninety human molars were mounted in acrylic and the occlusal surfaces ground to expose a flat dentin surface. Thirty teeth were randomly assigned to one of the following dentin bonding agent/composit...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1995-07-01 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::SUMMARY The purpose of this study was to evaluate the influence the width of the occlusal isthmus and inlay material had on the stress distribution, displacement, and fracture resistance of upper human premolars. For this in vitro test, 35 intact upper premolars (UPM) were selected and five were kept intact for the co...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/13-092-L
更新日期:2014-07-01 00:00:00
abstract::Recently, manufacturers introduced presterilized, single-use, plastic light-curing tips to be used either routinely or on patients with known or questionable communicable health concerns. The purpose of this study was to examine the effect of these single-use tips on light transmission compared to conventional fiber-o...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1998-07-01 00:00:00