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 restorations removed to expose the intact occlusal and gingival cavity walls. Maximum dye penetration axially was determined along either one or two imaginary slices or over the whole wall. Data were statistically evaluated by ANOVA and Tukey's test. Non-uniform staining occurred with 38 of the 96 walls available for evaluation. The average maximum dye penetration depth of the 38 walls was 0.61 mm and 0.70 mm for the slice method using one slice or two, respectively, and 1.29 mm for the whole-wall method. About half of these walls had leakage depths that were more than twice as great as when measured by the slice methods. All 12 of the 38 walls with no leakage when measured by the slice method, showed leakage at least somewhere along the margin when measured by the whole-wall method. This study shows that the whole-wall method detects significantly more leakage than does the slice method (p < 0.0001) and that using two rather than one slice does not improve the detection of leakage (p < 0.1534). Slicing the tooth restoration interface into only two or three sections may seriously underestimate the degree of leakage.
journal_name
Oper Dentjournal_title
Operative dentistryauthors
Williams PT,Schramke D,Stockton Lkeywords:
subject
Has Abstractpub_date
2002-11-01 00:00:00pages
628-35issue
6eissn
0361-7734issn
1559-2863journal_volume
27pub_type
杂志文章abstract：:A technique of restoring Class II posterior restorations with resin-based composite and a pre-polymerized composite insert was presented. This technique is intended to aid the practitioner in obtaining tight, broad, proximal contacts without having to purchase special instruments or materials. This method is not time-...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2004-07-01 00:00:00
abstract：OBJECTIVES::To evaluate the effect of a remineralizing gel combining fluoride and calcium silicate/phosphate or a sodium fluoride gel on bleached enamel microhardness, color, and wear susceptibility. METHODS AND MATERIALS::Two hundred forty bovine enamel-dentin samples were prepared. Baseline analysis of Knoop microha...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/17-150-L
更新日期：2019-01-01 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：OBJECTIVES:To evaluate the effect of minocycline and chlorhexidine pretreatment of acid-etched dentin on the longevity of resin-dentin bond strength (μTBS) and nanoleakage of two-step etch-and-rinse adhesives. METHODS:Before application of Prime & Bond NT and Adper Single Bond 2 in occlusal dentin, the dentin surfaces...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/15-023-L
更新日期：2016-09-01 00:00:00
abstract：PURPOSE:To evaluate the effect of zirconia primers, air-abrasion, and tribochemical surface treatment methods on the shear bond strength between yttria-tetragonal zirconia polycrystal (Y-TZP) ceramic and self-adhesive resin cement. METHODS AND MATERIALS:Y-TZP ceramic surfaces were ground flat with 600-grit silicon car...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/13-149-L
更新日期：2015-01-01 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：:This study investigated the effect of a crown-lengthening ferrule on the fracture resistance of endodontically-treated teeth restored with two dowel-core systems. Thirty-two extracted mandibular first premolars were sectioned perpendicular to the long axis at a point 1.0 mm occlusal to the buccal cementoenamel junctio...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/06-169
更新日期：2007-11-01 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：:This study compared the surface finish of eight different types of aesthetic restorative materials. The materials included resin-modified (Fuji II LC [FL], GC) and highly viscous (Fuji IX GP Fast [FN], GC) glass ionomer cements, a compomer (F2000 [FT], 3M-ESPE), minifilled (Z100 [ZO], 3M-ESPE) and microfilled (A110 [A...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:This study investigated the influence of light energy density (intensity x time) on the effectiveness of composite cure in view of the curing profiles of new light-polymerization units. This investigation used a digital microhardness tester to evaluate the hardness of the top/bottom surfaces and hardness ratio of 2 mm...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：2001-09-01 00:00:00
abstract：:This study investigated the influence of different light sources associated with a transdental photoactivation technique on the marginal adaptation and hardness of composite restorations. Cavities (3 mm wide x 3 mm long x 1.5 mm in deep) were prepared on flattened bovine dentin and filled with Z250 composite (3M ESPE)...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/07-109
更新日期：2008-07-01 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：:One hundred cervical caries-free, nonundercut lesions were restored in 13 patients of mean age 60.5 years, using Silux Plus or Estio LC resin composite bonded with Fuji Bond LC. Patients were recalled at 6 months and 1 year. A 1-year cumulative retention rate of 98% was recorded, while marginal staining was absent. ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1998-11-01 00:00:00
abstract：:This investigation evaluated the stabilizing effect of glass fiber reinforced posts (FRP) luted with self-adhesive universal cement on the fracture resistance of excessively flared endodontically treated teeth (ETT). Values were compared to teeth with no ferrule, 2 mm ferrule and resin cement for luting with 2 mm ferr...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/05-142
更新日期：2006-11-01 00:00:00
abstract：OBJECTIVES::The use of high-viscosity glass-ionomer cements (HVGICs) for atraumatic restorative treatment (ART) restorations is widely practiced with the advent of various HVGICs. However, the bonding of the latter to caries-affected dentin (CAD) should be validated, especially because it is the common substrate left a...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/17-154-L
更新日期：2018-11-01 00:00:00
abstract：:Post-operative sensitivity (POS) may be observed in recently placed posterior composites. Evidence-based guidelines for the management of posterior composites with POS have yet to be determined. This study examined a retrospective analysis of the findings of a unique multi-center clinical trial to investigate the five...
journal_title：Operative dentistry
pub_type： 临床试验,杂志文章,多中心研究
doi：
更新日期：2003-11-01 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：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 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：: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 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 objective of this paper is to review the literature concerning factors affecting adhesion to mineralized tissues. Factors related to the physicochemical structure of the adherents and to the inherent properties of composite restorative materials, along with the postulated bonding mechanisms of current adhesive sys...
journal_title：Operative dentistry
pub_type： 杂志文章,评审
doi：
更新日期：1992-01-01 00:00:00
abstract：:Under clinical conditions, the time needed for the proper light curing of luting composites or the multi-incremental buildup of a large restoration with halogen curing units is quite extensive. Due to the development of high power curing devices, such as argon lasers and plasma arc lights and, in order to decrease cur...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/06-79
更新日期：2007-05-01 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：OBJECTIVE:The purpose of this study was to evaluate the effect of phosphoric acid pre-etching times on shear bond strength (SBS) and surface free energy (SFE) with single-step self-etch adhesives. METHODS:The three single-step self-etch adhesives used were: 1) Scotchbond Universal Adhesive (3M ESPE), 2) Clearfil tri-S...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：10.2341/15-221-L
更新日期：2016-07-01 00:00:00
abstract：OBJECTIVES:Whitening efficacy has been related to hydrogen peroxide (HP) diffusion into tooth structure. However, little information is available relating rheological properties to whitening efficacy. The purpose was to evaluate the whitening efficacy and HP penetration level of a 10% HP gel at three different viscosit...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/17-099-L
更新日期：2018-05-01 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：:The effect of interdental separation of a special separation ring and wooden wedge was investigated. In a split-mouth design, 27 patients were randomly assigned to one of two groups (W or S). In 11 patients, an interdental wooden wedge (Hawe-Neos) was placed (group W), and in 16 patients, a separation ring (Composi-Ti...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/06-73
更新日期：2007-05-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to evaluate the two-year clinical performance of Class III, IV, and V composite restorations using a two-step etch-and-rinse adhesive system (2-ERA) and three one-step self-etching adhesive systems (1-SEAs). MATERIAL AND METHODS:Two hundred Class III, IV, and V composite restoration...
journal_title：Operative dentistry
pub_type： 杂志文章,随机对照试验
doi：10.2341/11-397-C
更新日期：2013-05-01 00:00:00
abstract：:The purpose of this study was to develop an accurate and reproducible intraoral method of measuring the distance between two teeth, and to conduct a clinical pilot study of the effect of placement of a class 2 posterior resin restoration upon this intertooth dimension. A Kaman Sciences KD-2611 noncontact displacement ...
journal_title：Operative dentistry
pub_type： 杂志文章
doi：
更新日期：1989-10-01 00:00:00
