Abstract：
:Adhesion of restorative and protective materials to dentin is an important requirement for operative and preventive dentistry. Wettability and roughness are dentin substrate conditions that are critical to establishing good adhesion. This study examined superficial and deep dentin for variations in water contact angle measurements and roughness for polished, etched, dehydrated, and rehydrated states. Superficial and deep dentin disks from 6 non-carious third molars were prepared for AFM (Atomic Force Microscope) observation, roughness measurement, and contact angle measurements following specific treatments: hydrated and polished, etched (10% H3PO4), dehydrated (desiccator for 24 hrs); and rehydrated (in water for 24 hrs). Contact angles were measured by means of the ADSA (Axisymmetric Drop Shape Analysis) technique with filtered and purified water of surface tension 72.79 ergs/cm2. The AFM was used to quantify the intertubular roughness. Mean and SD of roughness and contact angle were calculated for each dentin state, and two-way Repeated Measures ANOVA with Tukey's HSD multiple comparisons were performed at p < 0.05. Wetting and roughness both increased after etching, with roughness tending to increase further while wettability dramatically decreased after desiccation. After rehydration, water contact angle values were equivalent to those of the etched condition. Although intertubular roughness did not depend on depth, lower water contact angles were found for deep dentin. Depth and dehydration resulted in altered dentin substrates with exposed hydrophobic moieties that could interfere with bonding to hydrophilic primer coats.
journal_name
J Dent Resjournal_title
Journal of dental researchauthors
Rosales JI,Marshall GW,Marshall SJ,Watanabe LG,Toledano M,Cabrerizo MA,Osorio Rdoi
10.1177/00220345990780091001keywords:
subject
Has Abstractpub_date
1999-09-01 00:00:00pages
1554-9issue
9eissn
0022-0345issn
1544-0591journal_volume
78pub_type
杂志文章abstract：:Restriction endonuclease analysis (REA) was performed on the total cellular DNA from each of 396 strains of mutans streptococci (1) to determine its potential usefulness for the study of transmission of the organism and (2) to document the proportions and variety of strains harbored by members of a small group of fami...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345890680070401
更新日期：1989-07-01 00:00:00
abstract：:Thermal and mechanical hypersensitivity in the injured region is a common complication. Although it is well known clinically that thermal and mechanical sensitivity of the oral mucosa is different from that of the skin, the mechanisms underlying injured pain of the oral mucosa remain poorly understood. The transient r...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514565645
更新日期：2015-03-01 00:00:00
abstract：:The effect of combined administration of chlorhexidine and fluoride in the drinking water of hamsters on plaque and caries prevention was studied. Plaque indices of the hamsters receiving chlorhexidine either alone or simultaneously with fluoride were significantly lower than those of the control and fluoride only tre...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345770560111401
更新日期：1977-11-01 00:00:00
abstract：:Silver cations generated by passing low intensity direct current through pure silver electrodes were found to be sufficiently antibacterial to cause sterilization of samples of infected dentin. The optimal procedure involved a 5 microA current applied for 20 minutes with the anode then left in contact with the sample....
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345780570091901
更新日期：1978-09-01 00:00:00
abstract：:Dental caries can be described as a dysbiosis of the oral microbial community, in which acidogenic, aciduric, and acid-adapted bacterial species promote a pathogenic environment, leading to demineralization. Alkali generation by oral microbes, specifically via arginine catabolic pathways, is an essential factor in mai...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034517707512
更新日期：2017-07-01 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：:Oxygen inhibits polymerization of resin-based materials. We hypothesized that compromised bonding to bleached enamel can be reversed with sodium ascorbate, an anti-oxidant. Sandblasted human enamel specimens were treated with distilled water (control) and 10% carbamide peroxide gel with or without further treatment wi...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910208100709
更新日期：2002-07-01 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：:One-step incomplete excavation seals caries-affected dentin under a restoration and appears to be advantageous in the treatment of deep lesions. However, it is impossible to discriminate radiographically between intentionally left, arrested lesions and overlooked or active lesions. This diagnostic uncertainty decrease...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514531291
更新日期：2014-06-01 00:00:00
abstract：:Bone marrow-derived mesenchymal stem/progenitor cells (BMSCs) are commonly used in regeneration therapy. The current primary source of BMSCs is the iliac crest; however, the procedure is associated with various burdens on the patient, including the risk of pain and infection. Hence, the possibility to collect BMSCs fr...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514549377
更新日期：2014-11-01 00:00:00
abstract：:The complexity of human oral functional movements has not been studied in detail quantitatively, and only recently have studies begun to evaluate whether such movements contain sex-specific characteristics. Therefore, the purposes of this study were: (1) to quantify in detail the jaw movements and associated masticato...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345970760031301
更新日期：1997-03-01 00:00:00
abstract：:The acquired dental pellicle helps prevent erosion, but the protection level is unknown. This in situ study tested whether a two-hour pellicle protects against different erosive challenges by orange juice. Subjects wore palatal appliances loaded with either enamel or dentin specimens. Pellicle was allowed to form, or ...
journal_title：Journal of dental research
pub_type： 杂志文章,随机对照试验
doi：10.1177/154405910608500706
更新日期：2006-07-01 00:00:00
abstract：:1. A method has been developed and described for obtaining accurate thermal diffusivity values for dental cements and other restorative materials. This method employs specimens of a short cylindrical geometry which are readily fabricated from simply-constructed molds. 2. Results obtained for polycarboxylate and glass-...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345810600120801
更新日期：1981-12-01 00:00:00
abstract：:Periodontal inflammation and alveolar bone remodeling during orthodontic tooth movement are considered regional reactions. However, how systemic immune responses are involved in this regional reaction remains unclear. In this study, we explored the systemic effects of orthodontic force by focusing on the mononuclear p...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034515592868
更新日期：2015-09-01 00:00:00
abstract：:This study demonstrated a correlation between silicon x-ray counts and area fractions of adherent porcelain as determined by point-counting. This correlation has allowed a method to be devised for measuring area fractions of porcelain adherent to porcelain-fused-to-metal (PFM) fracture surfaces. The described method, ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345830620081801
更新日期：1983-08-01 00:00:00
abstract：:Monolayers of feline parotid acinar cells were infected with feline rhinotracheitis herpes virus. Membrane potentials and input resistances were measured before and during infection. Uninfected acinar cells had an average membrane potential of -51 mV and resistances from 6 to 120 mega-ohms; cells infected for more tha...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345810600121001
更新日期：1981-12-01 00:00:00
abstract：:The proton probe has been used to map F concentration changes in the enamel of 15 teeth showing clinical evidence of caries. Thin sections through the lesions were microradiographed and measurements made of the surface zone (radiodense) and body (radiolucent) areas. Each section was then scanned with a focused beam of...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345950740111001
更新日期：1995-11-01 00:00:00
abstract：:Deciduous teeth were collected from children who received professional prophylaxis with an acidulated phosphate-fluoride (APF) or placebo paste and were analyzed to determine fluoride uptake. Enamel fluoride level was increased by the APF paste approximately 300 ppm at a depth of 2.5 micrometers during the first month...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345760550064901
更新日期：1976-11-01 00:00:00
abstract：:Biological evaluation procedures for the acceptance of new dental materials include testing for mucous membrane irritation and inflammation, with the hamster cheek pouch used as a model system. Previous reports have indicated both a low 14-day implant retention rate and poor differentiation between positive and negati...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345860650111801
更新日期：1986-11-01 00:00:00
abstract：:An intra-oral model system has been developed which uses a single-section technique for before-and-after measurements on the same tissue. This model allows for placement of sections of enamel at both buccal and approximal sites. These sections may be sound or possess white-spot lesions. This allows for the evaluation ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345870660091401
更新日期：1987-09-01 00:00:00
abstract：:Significant differences exist between human and Macaca fascicularis patterns of mandibular movement during mastication. Macaque patterns display less asymmetry, more uniformity, and limited lateral excursions when compared to humans for mastication of the same food. Different anatomical structures between the two spec...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345780570071301
更新日期：1978-07-01 00:00:00
abstract：:The linear electrochemical polarization method was used to provide quantitative in vitro measurements of corrosion rates as a function of exposure time for Cu-Ni-Mn, Cu-Ni-Mn-Au, Cu-Ni-Mn-Ag, and Cu-Ni-Mn-Au-Ag alloys in artificial saliva. Both Au and Ag additives to dental-cast Cu-Ni-Mn alloys lowered the corrosion r...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345800590040701
更新日期：1980-04-01 00:00:00
abstract：:During orofacial tissue development, the anterior and posterior regions of the Meckel's cartilage undergo mineralization, while the middle region undergoes degeneration. Despite the interesting and particular phenomena, the mechanisms that regulate the different fates of Meckel's cartilage, including the effects of bi...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034520960118
更新日期：2021-02-01 00:00:00
abstract：:The Global Burden of Disease (GBD) 2010 Study produced comparable estimates of the burden of 291 diseases and injuries in 1990, 2005, and 2010. This article reports on the global burden of untreated caries, severe periodontitis, and severe tooth loss in 2010 and compares those figures with new estimates for 1990. We u...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034513490168
更新日期：2013-07-01 00:00:00
abstract：:Several studies indicated that serotype/biotype c strains are the most common on a global basis, but that regional differences may occur relative to other serotype/biotypes. Of particular interest is the observation that individuals residing in the Middle East have higher incidences of serotype e and d strains relativ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345840630011201
更新日期：1984-01-01 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：:This study aims at modifying dual-cure composite cements by adding thio-urethane oligomers to improve mechanical properties, especially fracture toughness, and reduce polymerization stress. Thiol-functionalized oligomers were synthesized by combining 1,3-bis(1-isocyanato-1-methylethyl)benzene with trimethylol-tris-3-m...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514551768
更新日期：2014-12-01 00:00:00
abstract：:The uptake patterns of 90Sr in developing rat molar enamel were studied in vivo and in vitro. Autoradiographic methods were used that preclude loss or translocation of tracers associated with water-soluble compounds in the sections. In eight-day-old rats injected with the tracer, 90Sr uptake in the enamel was signific...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345800590121301
更新日期：1980-12-01 00:00:00
abstract：:Lactoferrin is one of a number of multifunctional proteins that are present in or on all mucosal surfaces throughout the body. Levels of lactoferrin are consistently elevated in inflammatory diseases such as arthritis, inflammatory bowel diseases, corneal disease, and periodontitis. Single-nucleotide polymorphisms (SN...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/0022034515577413
更新日期：2015-06-01 00:00:00
abstract：:In two separate experiments, none of the 14 subunits examined consistently ranked dentifrices similarly to the ranking obtained when the individual rat was used as the experimental unit. Arbitrarily dividing the rat into subunits and then comparing results among these subunits may lead to false conclusions since the r...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345760550032901
更新日期：1976-05-01 00:00:00
