Abstract：
:A previously reported technique for staining areas of degradation in dental composite restorations was evaluated in 51 removed restorations. The staining reagent was silver nitrate, which penetrated the degraded subsurface as ionic silver and was subsequently developed into colored deposits of metallic silver. Several artefacts were recognized that resulted in an apparent image of subsurface stain. Most importantly, the presence of a layer of adsorbed silver on the edge of the specimen exaggerated the extent of staining. In order for the true depth of stain to be determined, thin sections of the materials should first be examined with a stereomicroscope to distinguish any contribution from adsorbed silver on the specimen edge. With this regimen, no stain was present in 41% of the restorations, and in a further 30%, the depth of stain was less than 50 microns. In two composites, the depth of stain was greater than 900 microns, and in a number of specimens, localized stain was found in association with attrition scars. Energy-dispersive x-ray analysis indicated that the amount of silver present in the degraded layers was very small. Overall, the results indicated that the staining technique is useful in the study of composite degradation.
journal_name
J Dent Resjournal_title
Journal of dental researchauthors
Mair LHdoi
10.1177/00220345910700031201subject
Has Abstractpub_date
1991-03-01 00:00:00pages
215-20issue
3eissn
0022-0345issn
1544-0591journal_volume
70pub_type
杂志文章abstract：:Continuous etching of aggressive all-in-one adhesives occurs in wet dentin tubules after polymerization of the adhesives. This study challenged the hypothesis that unpolymerized acidic monomers from an aggressive all-in-one self-etching adhesive continue to etch beyond dentin hybrid layers. Dentin surfaces bonded with...
journal_title：Journal of dental research
pub_type： 杂志文章,随机对照试验
doi：10.1177/0022034510363665
更新日期：2010-05-01 00:00:00
abstract：:Periodontitis is a complex, multifactorial chronic disease involving continuous interactions among bacteria, host immune/inflammatory responses, and modifying genetic and environmental factors. More than any other cytokine family, the interleukin (IL)-1 family includes key signaling molecules that trigger and perpetua...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034520945209
更新日期：2020-12-01 00:00:00
abstract：:Epithelial-mesenchymal interactions are required for tooth formation. Bone morphogenetic protein 4 (Bmp4) is a crucial signaling molecule during this process. For better understanding of the role of the Bmp4 gene during tooth development, we studied the mechanisms that control its temporal and spatial expression durin...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/002203450208100103
更新日期：2002-01-01 00:00:00
abstract：:In a three-year study of 145 adolescent males in a boarding school in Wisconsin, there were no statistically significant differences in dental caries experience between a group consuming phosphates added to pre-sweetened and non-presweetened ready-to-eat cereals, and the control group, or between cereal eaters and non...
journal_title：Journal of dental research
pub_type： 临床试验,杂志文章
doi：10.1177/00220345790580090201
更新日期：1979-09-01 00:00:00
abstract：:Lysozyme concentration was quantitated immunochemically in parotid and submandibular-sublingual saliva of 46 caries-resistant and 17 caries-susceptible adults. There was essentially no difference between the two groups. The concentration of lysozyme was three times higher in the submandibular-sublingual than in the pa...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345830620050701
更新日期：1983-05-01 00:00:00
abstract：:The classic stimulus for cellular cytokine production is bacterial lipopolysaccharide (endotoxin). It was therefore hypothesized that tumor necrosis factor-alpha (TNF-alpha) may be responsible for pericoronitis. TNF-alpha and its receptors were detected by immunohistochemical staining in third molar pericoronitis in t...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910508401216
更新日期：2005-12-01 00:00:00
abstract：:Recent studies have shown that the extent of hydrolysis by plaque of the trypsin substrate, N-benzoyl-DL-arginine-2-naphthylamide (BANA), correlates with the numbers and proportions of spirochetes in subgingival plaque samples, and appears to be an indicator of clinical disease. In this study, BANA hydrolysis by subgi...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345880670121201
更新日期：1988-12-01 00:00:00
abstract：:Patients with cleft lip/palate (CLP) have been reported, in some studies, to exhibit an increased prevalence of caries, although the underlying cause for this increase is unknown. In genetically defined mouse models, studies of postnatal sequelae associated with CLP have been hampered by neonatal lethality. Using a co...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034516679376
更新日期：2017-03-01 00:00:00
abstract：:Epstein-Barr virus (EBV), in addition to its transforming properties, contributes to the pathogenesis of several inflammatory diseases. Here, we investigated its involvement in oral lichen planus (OLP), a common autoimmune-like disease of unknown etiopathogenesis that can display a malignant potential. EBV-infected ce...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034518788282
更新日期：2018-12-01 00:00:00
abstract：:Medication-related osteonecrosis of the jaw (MRONJ), although initially believed to be exclusively associated with bisphosphonates, has been implicated in recent reports with additional drugs, especially the bone antiresorptive denosumab. The pathophysiology has not been fully elucidated, and no causal association bet...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/0022034515572021
更新日期：2015-04-01 00:00:00
abstract：:The sensitizing potential of three periodontal dressing materials was evaluated by the guinea pig maximization test. The results indicated a difference in the sensitization rate of the three materials. ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345780570110801
更新日期：1978-11-01 00:00:00
abstract：:A study was made of the hydration of dental cements, water being classified as "non-evaporable" and "evaporable". The ratio of these two types of water was found to vary greatly among different cement types, being lesser in zinc oxide and ionic polymer cements and greater in ion-leachable glass and phosphoric acid cem...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345790580030701
更新日期：1979-03-01 00:00:00
abstract：:Knoop hardness measurements of UV-polymerized dental composites showed that, at a certain depth below the surface, the degree of cure rapidly decreases. The depth of cure was found to be critically dependent on the UV source and exposure time used. A theoretical model was derived which was in quantitative accord with ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345800590050901
更新日期：1980-05-01 00:00:00
abstract：:Urinary catecholamines have been used to measure emotionally stressful states which may affect the development of dental caries. This study investigates the hypothesis that children with and without dental caries do not differ significantly in the mean values of urinary catecholamines such as epinephrine, norepinephri...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345950740100801
更新日期：1995-10-01 00:00:00
abstract：:Dimensional alterations of the facial bone wall following tooth extractions in the esthetic zone have a profound effect on treatment outcomes. This prospective study in 39 patients is the first to investigate three-dimensional (3D) alterations of facial bone in the esthetic zone during the initial 8 wks following flap...
journal_title：Journal of dental research
pub_type： 临床试验,杂志文章
doi：10.1177/0022034513506713
更新日期：2013-12-01 00:00:00
abstract：:Juvenile rheumatoid arthritis (JRA) is a chronic systemic disease of childhood that affects synovial joints including the temporomandibular joint (TMJ). Individuals with JRA of the TMJ frequently show aberrations in mandibulofacial development. Since the basis for these developmental perturbations is poorly understood...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345990780080801
更新日期：1999-08-01 00:00:00
abstract：:Insulin resistance is one of the critical pathogeneses of type 2 diabetes mellitus (T2DM). Elevated levels of plasma branched-chain amino acids (BCAAs) are associated with insulin resistance. Recent studies have demonstrated the role of Porphyromonas gingivalis in the development of insulin resistance. However, the me...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034520911037
更新日期：2020-07-01 00:00:00
abstract：:An adhesive opaque resin for veneering on cast metal was developed with 4-methacryloxyethyl trimellitate anhydride and poly (methyl methacrylate)-coated titanium dioxide prepared by aqueous phase polymerization. The opaque resin was a modified 4-META/MMA-TBB resin. The powder consisted of 20% of the encapsulated mater...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345880670010501
更新日期：1988-01-01 00:00:00
abstract：:TWIST1 plays a crucial role in dentinogenesis, and its activity depends on both a dimerization partner selection and phosphorylation. Other factors, like Id proteins, can affect the availability of dimerization partners for TWIST1, subsequently leading to diverse biological outcomes. The purpose of this study was to e...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514530164
更新日期：2014-06-01 00:00:00
abstract：:Fibroblast growth factor receptor 2 (FGFR2) in craniofacial bones mediates osteoprogenitor proliferation, differentiation, and apoptosis. The distortion of proper craniofacial bone growth may cause class II and class III skeletal malocclusion and result in compromised function and aesthetics. Here, we investigated the...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034519872951
更新日期：2019-11-01 00:00:00
abstract：:1) A new adhesive opaque resin containing a reactive monomer, 4-methacryloxy-ethyl trimellitate anhydride (4-META), was prepared, and its application to thermosetting acrylic resin veneer crowns was studied. 2) The 4-META opaque resin was applied to a variety of nickel-chromium dental alloy specimens which had undergo...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345810600091101
更新日期：1981-09-01 00:00:00
abstract：:A detailed understanding of the complexity of root canal systems is imperative to ensure successful root canal preparation. The aim of this study was to evaluate the potential and accuracy of a three-dimensional, non-destructive technique for detailing root canal geometry by means of high-resolution tomography. The an...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345000790060901
更新日期：2000-06-01 00:00:00
abstract：:The initiator of calculus matrix calcification, in vitro, was isolated. Crude phospholipid, known to contain the factor, was separated into five fractions by column chromatography. A single protein-containing fraction induced apatite formation during incubation. The nucleating fraction was indentified as a proteolipid...
journal_title：Journal of dental research
pub_type： 历史文章,杂志文章
doi：10.1177/00220345770560020701
更新日期：1977-02-01 00:00:00
abstract：:Fibroblast growth factor (FGF) signaling has been implicated in the regulation of osteogenesis in both intramembranous and endochondral ossifications. In the developing palate, the anterior bony palate forms by direct differentiation of cranial neural crest (CNC)-derived mesenchymal cells, but the signals that regulat...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034517750141
更新日期：2018-05-01 00:00:00
abstract：:The distribution of immunoglobulin-containing cells in human tonsils, salivary glands, and inflamed gingiva is described. The cellular localization of J chain indicates that this peptide is a basic gene product of B cells that is expressed only in the early phase of clonal differentiation. Gland-associated immunocytes...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/002203457605500301011
更新日期：1976-04-01 00:00:00
abstract：:Selected strains of oral bacteria were analyzed for their ability to degrade wheat starch, maltose, maltotriose, and maltoheptaose. S. sanguis IUOM-11M and JC804, S. mutans 6715, S. salivarius IUOM-8, A. viscosus IUOM-62, and A. naeslundii ATCC 12104 degraded all four substrates. S. mutans NCTC 10449 degraded starch, ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345880670011501
更新日期：1988-01-01 00:00:00
abstract：:Hereditary diseases affecting the skeleton are heterogeneous in etiology and severity. Though many of these conditions are individually rare, the total number of people affected is great. These disorders often include dental-oral-craniofacial (DOC) manifestations, but the combination of the rarity and lack of in-depth...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/0022034514529150
更新日期：2014-07-01 00:00:00
abstract：:Dental composites develop residual stresses during polymerization due to shrinkage. These stresses may change with time because of relaxation and water sorption in the oral environment. This phenomenon is likely dependent on the composition of the materials, specifically their hydrophilic characteristics, and could re...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034513513905
更新日期：2014-02-01 00:00:00
abstract：:Human tooth wear occurs so slowly that traditionally it has needed months or years to be measurable. This study showed that microscopic changes in wear patterns on human teeth could be detected in a matter of days and could be used as indicators of rates of wear. Thus, daily or weekly changes in rates of wear can be d...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345910700030901
更新日期：1991-03-01 00:00:00
abstract：:Squamous cell carcinoma (SCC) of the head and neck is the sixth most frequent cancer worldwide. The survival rate is among the lowest of the major cancers and has not improved significantly in the past two decades. Extensive local invasion and regional lymph node metastasis are, in large part, responsible for the poor...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345990780061001
更新日期：1999-06-01 00:00:00
