Finite element stress analysis of a class I amalgam restoration subjected to setting and thermal expansion.

abstract：:Dental pulp regeneration therapy for the pulpless tooth has attracted recent attention, and clinical trial studies are underway with the tissue engineering approach. However, there remain many concerns, including the extended period for regenerating the dental pulp. In addition, the use of scaffolds increases the risk...

journal_title：Journal of dental research

authors： Itoh Y,Sasaki JI,Hashimoto M,Katata C,Hayashi M,Imazato S

更新日期：2018-09-01 00:00:00

abstract：:A three-month study of the chemistry of the water erosion of two forms of ASPA cement has been made. The effect of varying cement consistency and cure time was investigated. The results are discussed in terms of the known chemistry and structure of the cement. The erosion behavior is compared to that of silicate, sili...

journal_title：Journal of dental research

authors： Crisp S,Lewis BG,Wilson AD

更新日期：1976-11-01 00:00:00

abstract：:In this study, the differences in lesion remineralization and fluoride uptake after brushing with a 300 ppm F or a 1000 ppm F dentifrice (as NaF) were investigated. Twenty volunteers with partial dentures in their lower jaws were divided into two groups. Bovine enamel slabs with artificial lesions were mounted in the ...

journal_title：Journal of dental research

authors： De Kloet HJ,Exterkate RA,Rempt HE,Ten Cate JM

更新日期：1986-12-01 00:00:00

abstract：:Minimizing patient exposure while maintaining a diagnostically acceptable radiograph is a major goal in diagnostic radiography. Rare-earth filters may be the means to achieve this goal due to their "band-pass effect". The purpose of this study was to examine the image contrast effects and exposure reductions for vario...

journal_title：Journal of dental research

authors： Mauriello SM,Washburn DB,Matteson SR

更新日期：1987-08-01 00:00:00

abstract：:The effect of enamel matrix proteins on the seeded growth of enamel apatite crystals was studied in stable supersaturated solutions at pH 7.4 and 37 degrees C. Of the two major protein classes in the enamel matrix, the enamelins were considerably more effective than the amelogenins in retarding seeded growth. However,...

journal_title：Journal of dental research

authors： Doi Y,Eanes ED,Shimokawa H,Termine JD

更新日期：1984-02-01 00:00:00

abstract：:The effect of different doses of polyadenylic and polyuridylic acids (poly A:U) was studied in control rats and in rats exposed to hypoxia. In the control rats, administration of different doses of poly A:U did not change the thickness of the epiphyseal plate or increase the incorporation of 3H-phenylalanine as judged...

journal_title：Journal of dental research

authors： Koo CS,Kim MK,Han SS

更新日期：1976-07-01 00:00:00

abstract：:Previously, we reported that the rate (R) of hydroxyapatite dissolution in acetic, lactic, and phosphoric acid solutions is a function of the degree of saturation with respect to the dissolving mineral, DS (defined as the ratio of the mean ionic activity product for hydroxyapatite [Ca5OH(PO4)3] in solution to its solu...

journal_title：Journal of dental research

authors： Margolis HC,Zhang YP,Lee CY,Kent RL Jr,Moreno EC

更新日期：1999-07-01 00:00:00

abstract：:The effects of thermal stress on the marginal leakage of resin composite restorations in bovine teeth were investigated by a method that preserved the specimens. The changes in marginal leakage of specimens with increasing numbers of thermal cycles were measured by an electrical conductivity method. Four brands of pos...

journal_title：Journal of dental research

authors： Momoi Y,Iwase H,Nakano Y,Kohno A,Asanuma A,Yanagisawa K

更新日期：1990-10-01 00:00:00

abstract：:The complexity of the periodontal microbiota resembles that of the gastro-intestinal tract, where infectious diseases are treatable via probiotics. In the oropharyngeal region, probiotic or replacement therapies have shown some benefit in the prevention of dental caries, otitis media, and pharyngitis, but their effect...

journal_title：Journal of dental research

authors： Teughels W,Newman MG,Coucke W,Haffajee AD,Van Der Mei HC,Haake SK,Schepers E,Cassiman JJ,Van Eldere J,van Steenberghe D,Quirynen M

更新日期：2007-11-01 00:00:00

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...

journal_title：Journal of dental research

authors： Rosales JI,Marshall GW,Marshall SJ,Watanabe LG,Toledano M,Cabrerizo MA,Osorio R

更新日期：1999-09-01 00:00:00

abstract：:The cacao bean husk has been shown to possess two types of cariostatic substances, one showing anti-glucosyltransferase (GTF) activity and the other antibacterial activity, and to inhibit experimental dental caries in rats infected with mutans streptococci. In the present study, chromatographic purification revealed h...

journal_title：Journal of dental research

authors： Osawa K,Miyazaki K,Shimura S,Okuda J,Matsumoto M,Ooshima T

更新日期：2001-11-01 00:00:00

abstract：:The eventual outcome of dental caries is determined by the dynamic balance between pathological factors that lead to demineralization and protective factors that lead to remineralization. Pathological factors include acidogenic bacteria, inhibition of salivary function, and frequency of ingestion of fermentable carboh...

journal_title：Journal of dental research

authors： Featherstone JD

更新日期：2004-01-01 00:00:00

abstract：:It was recently reported that human periapical cysts (hPCys), a commonly occurring odontogenic cystic lesion of inflammatory origin, contain mesenchymal stem cells (MSCs) with the capacity for self-renewal and multilineage differentiation. In this study, periapical inflammatory cysts were compared with dental pulp to ...

journal_title：Journal of dental research

authors： Marrelli M,Paduano F,Tatullo M

更新日期：2015-06-01 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

authors： Farghaly MM,Eklund S,Loesche WJ

更新日期：1984-01-01 00:00:00

abstract：:T6 antigen is a highly specific marker for human Langerhans cells (LC). Previous studies have demonstrated that Interleukin-1 (IL-1) and an IL-1 inhibitor (ILS) modulate LC T6 expression (T6E) in explant culture. The present study examined the in vitro modulation of T6E by two molecules: epidermal-cell-derived thymocy...

journal_title：Journal of dental research

authors： Walsh LJ,Lander PE,Seymour GJ,Powell RN

更新日期：1987-03-01 00:00:00

abstract：:Six subjects wore intra-oral devices carrying eight bovine enamel blocks which were covered with a layer of S. mutans. They rinsed their mouths for five sec, one min, or multiples of one min with a 5 or 10% glucose (G) solution. Demineralization was measured after 45 min by determining the change in iodide permeabilit...

journal_title：Journal of dental research

authors： Tehrani A,Goulet D,Brudevold F,Attarzadeh F

更新日期：1986-02-01 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

authors： Glor EB,Miller CH,Spandau DF

更新日期：1988-01-01 00:00:00

abstract：:In a standard periodontal treatment strategy with consecutive root planings (per quadrant at a one- to two-week interval), re-infection of a disinfected area might occur before completion of the treatment. This study examines, both clinically and microbiologically, whether a full-mouth disinfection within 24 hours sig...

journal_title：Journal of dental research

authors： Quirynen M,Bollen CM,Vandekerckhove BN,Dekeyser C,Papaioannou W,Eyssen H

更新日期：1995-08-01 00:00:00

abstract：:Data from the actual private practices of two dentists were compared with respective data from the participation of the same two dentists in a laboratory model of private practice conducted in the University of North Carolina Dental Research Center. The findings show that a laboratory model can be established which ac...

journal_title：Journal of dental research

authors： Chadwick DG

更新日期：1975-05-01 00:00:00

abstract：:Impacted human third molar teeth were examined, both with the light and electron microscope, to determine the extent of the odontoblast process. The odontoblast process was found to be limited to the inner third of coronal dentin and inner half of mid-root dentin. ...

journal_title：Journal of dental research

authors： Thomas HF

更新日期：1979-11-01 00:00:00

abstract：:The aim of this study was to examine the association between the bone mass (bone mineral content [BMC]) and hypomineralized second primary molars (HSPMs)/molar incisor hypomineralization (MIH) in 6-y-old children. This cross-sectional study was embedded in the Generation R Study, a population-based prospective cohort ...

journal_title：Journal of dental research

authors： van der Tas JT,Elfrink ME,Vucic S,Heppe DH,Veerkamp JS,Jaddoe VW,Rivadeneira F,Hofman A,Moll HA,Wolvius EB

更新日期：2016-04-01 00:00:00

abstract：:The aim of this study was to investigate whether the release of fluoride and the antimicrobial effect of freshly mixed glass ionomers could be prolonged by application of fluoride on aged material. Test slabs of freshly mixed and aged (14 d in water) conventional and silver glass ionomer (Ketac-Fil and Ketac-Silver, E...

journal_title：Journal of dental research

authors： Seppä L,Forss H,Ogaard B

更新日期：1993-09-01 00:00:00

abstract：:Inorganic polyphosphate [Poly(P)] is especially prevalent in osteoblasts. We tested the hypothesis that Poly(P) stimulates osteoblastic differentiation and polyphosphate metabolism for bone formation. The osteoblast-like cell line, MC 3T3-E1, was cultured with Poly(P), and gene expression was evaluated by real-time re...

journal_title：Journal of dental research

authors： Usui Y,Uematsu T,Uchihashi T,Takahashi M,Takahashi M,Ishizuka M,Doto R,Tanaka H,Komazaki Y,Osawa M,Yamada K,Yamaoka M,Furusawa K

更新日期：2010-05-01 00:00:00

abstract：:The treatment of periodontitis/peri-implantitis involves the reduction/eradication of periopathogens. After therapy, beneficial and pathogenic species recolonize the subgingival area. The dynamics of recolonization and especially the role of the supragingival environment in this process are still not well-understood. ...

journal_title：Journal of dental research

authors： Quirynen M,Vogels R,Pauwels M,Haffajee AD,Socransky SS,Uzel NG,van Steenberghe D

更新日期：2005-04-01 00:00:00

abstract：:Before the 1960s, tooth-specific caries risk was reported to be highest at 2 to 4 years after eruption. We studied the tooth-specific caries risk in three contemporary age cohorts in Finland. All together, 4072 boys and girls were followed annually from age 6 to age 18+ years in three age cohorts born in the 1960s, 19...

journal_title：Journal of dental research

authors： Härkäne T,Larmas MA,Virtanen JI,Arjas E

更新日期：2002-02-01 00:00:00

abstract：:The kinetics of subsurface demineralization of tooth sections has been studied in real-time by scanning microradiography (SMR). Demineralization was carried out: (1) with a large volume of solution buffered to pH = 4 to maintain a constant composition; and (2) in a small constant volume (approximately 3 mL), buffered ...

journal_title：Journal of dental research

authors： Gao XJ,Elliott JC,Anderson P

更新日期：1993-05-01 00:00:00

abstract：:An infrared spectroscopic study has been made of the development of crystallinity (hopeite) in dental zinc phosphate cements. Crystallization in the bulk of a cement is prevented only by the incorporation, in the liquid, of aluminum which forms complexes with phosphoric acid. The development of surface crystallinity i...

journal_title：Journal of dental research

authors： Crisp S,O'Neill IK,Prosser HJ,Stuart B,Wilson AD

更新日期：1978-02-01 00:00:00

abstract：:The purpose of the study was to determine the exposure times needed to harden a light-activated composite cement through various thicknesses of porcelain. A negative exponential model was developed with which the relative hardness of a composite could be predicted from the product of the exposure time and the square r...

journal_title：Journal of dental research

authors： Chan KC,Boyer DB

更新日期：1989-03-01 00:00:00

abstract：:The solubilities of extracellular polysaccharide fractions produced by 14 oral streptococcal strains were compared in water, aqueous lithium and guanidine salt solutions, dimethyl sulfoxide (DMSO), and a 9:1 DMSO-water mixture. The best results for solubilizing the fractions were obtained with the DMSO-water mixture p...

journal_title：Journal of dental research

authors： Lamberts BL,Meyer TS,Simonson LG

更新日期：1975-07-01 00:00:00

abstract：:The bactericidal effect of hexylresorcinol was assessed using bacterial aggregates. Increased drug concentration resulted in decreased survival of bacteria when the aggregates were exposed to hexylresorcinol for at least eight hours. This indicates that this drug may be effective against dental plaque only when availa...

journal_title：Journal of dental research

authors： Kraal JH,Hussain AA,Gregorio SB,Akaho E

更新日期：1979-11-01 00:00:00