Three-dimensional analysis of root canal geometry by high-resolution computed tomography.

abstract：:We report a clinical study that examines whether HIV infection affects Streptococcus mutans colonization in the oral cavity. Whole stimulated saliva samples were collected from 46 HIV-seropositive individuals and 69 HIV-seronegative control individuals. The level of S. mutans colonization was determined by conventiona...

journal_title：Journal of dental research

authors： Liu G,Saxena D,Chen Z,Norman RG,Phelan JA,Laverty M,Fisch GS,Corby PM,Abrams W,Malamud D,Li Y

更新日期：2012-09-01 00:00:00

abstract：:The diagnosis of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection relies on the detection of viral RNA by real-time reverse transcription polymerase chain reaction (rRT-PCR) performed with respiratory specimens, especially nasopharyngeal swabs. However, this procedure requires specialized medical...

journal_title：Journal of dental research

authors： Azzi L,Maurino V,Baj A,Dani M,d'Aiuto A,Fasano M,Lualdi M,Sessa F,Alberio T

更新日期：2021-02-01 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 spatial relationship of the mandibular condyle to the temporal component of the TMJ is determined quantitatively from lateral tomograms using a new method of measuring specific areas of the joint space. Condyle position along the posteroanterior axis of the joint is expressed as a ratio of the posterior joint spac...

journal_title：Journal of dental research

authors： Blaschke DD,Blaschke TJ

更新日期：1981-01-01 00:00:00

abstract：:Mechanical removal of oral biofilms is ubiquitously accepted as the best way to prevent caries and periodontal diseases. Removal effectiveness strongly depends on biofilm strength. To investigate the influence of hydrodynamics on oral biofilm strength, we grew single- and multi-species biofilms of Streptococcus oralis...

journal_title：Journal of dental research

authors： Paramonova E,Kalmykowa OJ,van der Mei HC,Busscher HJ,Sharma PK

更新日期：2009-10-01 00:00:00

abstract：:Synovitis in internal derangement of the temporomandibular joint (TMJ) is accompanied by the growth of new blood vessels. Fibroblast growth factor-2 (FGF-2) and vascular endothelial growth factor (VEGF) are well-characterized angiogenic factors. The objective of this study was to elucidate the correlation between the ...

journal_title：Journal of dental research

authors： Sato J,Segami N,Yoshitake Y,Nishikawa K

更新日期：2003-04-01 00:00:00

abstract：:Pure gutta-percha was heat-treated in a differential thermal analyzer. The high melting form crystallized on cooling when gutta-percha was heated to 70 C or less. Above 74 C, crystallization into the low melting form predominated. Either polymorph can be selectively crystallized by control of the heat-treatment temper...

journal_title：Journal of dental research

authors： Rootare HM,Powers JM

更新日期：1977-12-01 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：:This case-control study evaluated the association of headache and other co-morbid pain with temporomandibular disorder (TMD) pain in adolescents and explored the temporal co-variance of headache and TMD pain. In a population-based sample of 12- to 19-year-olds, 350 patients with self-reported TMD pain and 350 healthy ...

journal_title：Journal of dental research

authors： Nilsson IM,List T,Drangsholt M

更新日期：2013-09-01 00:00:00

abstract：:Four classes of elastomeric impression materials (polysulfide, polyether, silicone, and agar-agar) were evaluated on the basis of linear dimensional stability as a function of time between taking and pouring an impression of mounted teeth. Four polysulfide materials produced dies which were larger than the teeth and g...

journal_title：Journal of dental research

authors： Marcinak CF,Young FA,Draughn RA,Flemming WR

更新日期：1980-07-01 00:00:00

abstract：:Using glycoproteins and milk oligosaccharides as substrate acceptors, we demonstrated at least two fucosyltransferases in human parotid saliva. One enzyme transferred L-fucose from GDP-fucose to the C-3 position of N-acetylglucosamine or glucose residue of oligosaccharide chains, and the other transferred to the C-4 p...

journal_title：Journal of dental research

authors： Tamagawa H,Inoshita E,Shibata S,Shizukuishi S,Tsunemitsu A

更新日期：1983-07-01 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

authors： Teaford MF,Tylenda CA

更新日期：1991-03-01 00:00:00

abstract：:The creatinine-adjusted urinary concentration of mercury in 73 schoolchildren with a mean age of 12 years was determined. In addition, the number of amalgam restorations and their size, prevalence of allergy, and days absent from school due to illness were recorded for each individual. A significant positive correlati...

journal_title：Journal of dental research

authors： Olstad ML,Holland RI,Wandel N,Pettersen AH

更新日期：1987-06-01 00:00:00

abstract：:Samples of a base mental alloy were cast and welded together using a conventional welding procedure. The joints were loaded and placed either in a corrosive environment or in air for varying time periods. The tensile and shear strength of the joints was unaffected by the corrosive environment, and the joints, despite ...

journal_title：Journal of dental research

authors： MacEntee MI,Hawbolt EB,Zahel JI

更新日期：1981-02-01 00:00:00

abstract：:The biocompatibility of two implant materials, vitallium and poly-methyl methacrylate (PMMA), was evaluated in an animal model in which bone formation and resorption are independent of each other. Neither material accelerated resorption, but formation was inhibited 12% by vitallium and 38% by PMMA. When three PMMA pre...

journal_title：Journal of dental research

authors： Garcia DA,Sullivan TM,O'Neill DM

更新日期：1981-01-01 00:00:00

abstract：:Biological mediators have been used to enhance periodontal regeneration. The aim of this prospective randomized controlled study was to evaluate the safety and effectiveness of 3 doses of fibroblast growth factor 2 (FGF-2) when combined with a β-tricalcium phosphate (β-TCP) scaffold carrier placed in vertical infrabon...

journal_title：Journal of dental research

authors： Cochran DL,Oh TJ,Mills MP,Clem DS,McClain PK,Schallhorn RA,McGuire MK,Scheyer ET,Giannobile WV,Reddy MS,Abou-Arraj RV,Vassilopoulos PJ,Genco RJ,Geurs NC,Takemura A

更新日期：2016-05-01 00:00:00

abstract：:A double-blind randomized clinical trial was performed in 6- to 7-yr-old schoolchildren to evaluate, in a 30-mo period, whether the caries increment on the distal surface of the second primary molars adjacent to permanent first molars sealed with fluoride release compounds would be lower with respect to those adjacent...

journal_title：Journal of dental research

authors： Cagetti MG,Carta G,Cocco F,Sale S,Congiu G,Mura A,Strohmenger L,Lingström P,Campus G,Italian Experimental Group on Oral Health.

更新日期：2014-07-01 00:00:00

abstract：:Understanding the mechanical properties of human teeth is important to clinical tooth preparation and to the development of "tooth-like" restorative materials. Previous studies have focused on the macroscopic fracture behavior of enamel and dentin. In the present study, we performed indentation studies to understand t...

journal_title：Journal of dental research

authors： Xu HH,Smith DT,Jahanmir S,Romberg E,Kelly JR,Thompson VP,Rekow ED

更新日期：1998-03-01 00:00:00

abstract：:The influence of the molecular weight of the poly(acrylic acid) component on some properties of glass-ionomer cement has been investigated. The results can be explained by treatment of glass-ionomer cements as thermoplastic composites. Many of the concepts of polymer science can be applied successfully in a qualitativ...

journal_title：Journal of dental research

authors： Wilson AD,Hill RG,Warrens CP,Lewis BG

更新日期：1989-02-01 00:00:00

abstract：:Previous studies show that both activin and Bmp4 act as crucial mesenchymal odontogenic signals during early tooth development. Remarkably, mice lacking activin-βA ( Inhba-/-) and mice with neural crest-specific inactivation of Bmp4 ( Bmp4ncko/ncko) both exhibit bud-stage developmental arrest of the mandibular molar t...

journal_title：Journal of dental research

authors： Kwon HE,Jia S,Lan Y,Liu H,Jiang R

更新日期：2017-09-01 00:00:00

abstract：:The role of Streptococcus mutans in the initiation of dental caries has been recognized and attributed, at least in part, to its ability to colonize the tooth surface. Therefore, factors which prevent S. mutans attachment to hydroxyapatite (HA) are of considerable interest for the prophylaxis of this infectious diseas...

journal_title：Journal of dental research

authors： Tarsi R,Muzzarelli RA,Guzmán CA,Pruzzo C

更新日期：1997-02-01 00:00:00

abstract：:While dental pulp appears to be able to form mineralized matrices that do not always resemble dentin, the precise characteristics of the hard tissue and the mechanism of its induction remain unknown. Therefore, we evaluated hard tissue induced by transplantation of pulp into subcutaneous tissue. Seven days after trans...

journal_title：Journal of dental research

authors： Hosoya A,Nakamura H,Ninomiya T,Hoshi K,Yoshiba K,Yoshiba N,Takahashi M,Okabe T,Sahara N,Yamada H,Kasahara E,Ozawa H

更新日期：2007-05-01 00:00:00

abstract：:In previous studies, light-cured glass-ionomer cements have been shown to evoke cytotoxic reactions. It was the purpose of this investigation (a) to determine the nature of the ingredients released into an aqueous medium from 2 light-cured glass-ionomer cements (GICs) and 3 compomers; (b) to evaluate the cytotoxicity ...

journal_title：Journal of dental research

authors： Geurtsen W,Spahl W,Leyhausen G

更新日期：1998-12-01 00:00:00

abstract：:The effects of various additives on the setting of the glass-ionomer cement system was studied by means of cone and plate viscometry. The action of (+)-tartaric acid, the most important additive, on the setting reaction depended on its concentration. Low concentrations accelerated the development of viscosity of the c...

journal_title：Journal of dental research

authors： Hill RG,Wilson AD

更新日期：1988-12-01 00:00:00

abstract：:Enamel abraders used in two-body wear tests suffer the disadvantage that standardization is difficult or impossible to obtain. The aim of this study was to test whether steatite (a ceramic material with a Vickers Hardness similar to that of enamel) could be used as a satisfactory human enamel analogue. The friction an...

journal_title：Journal of dental research

authors： Wassell RW,McCabe JF,Walls AW

更新日期：1994-09-01 00:00:00

abstract：:In order for the role of parotid amylase in starch digestion in the gastro-intestinal tracts of diabetic rats to be clarified, this study investigated the effect of parotid-duct ligation on both amylase secretion from the parotid glands and pancreas into the gastro-intestinal tract and on starch digestion in the gastr...

journal_title：Journal of dental research

authors： Kurahashi M,Inomata K

更新日期：1989-09-01 00:00:00

abstract：UNLABELLED:Excessive mechanical stress (MS) during hyperocclusion is known to result in disappearance of the alveolar hard line, enlargement of the periodontal ligament (PDL) space, and destruction of alveolar bone, leading to occlusal traumatism. We have recently reported that MS induces predominantly C-C chemokine li...

journal_title：Journal of dental research

authors： Tsutsumi T,Kajiya H,Goto KT,Takahashi Y,Okabe K

更新日期：2013-01-01 00:00:00

abstract：:Bone and dentin share similar biochemical compositions and physiological properties. Dentin, a major tooth component, is formed by odontoblasts; in contrast, bone is produced by osteoblasts. Osterix (Osx), a zinc finger-containing transcription factor, has been identified as an essential regulator of osteoblast differ...

journal_title：Journal of dental research

authors： Kim TH,Bae CH,Lee JC,Kim JE,Yang X,de Crombrugghe B,Cho ES

更新日期：2015-03-01 00:00:00

abstract：:The whisker pad area (WP) is innervated by the second branch of the trigeminal nerve and experiences allodynia and hyperalgesia following transection of the mental nerve (MN; the third branch of the trigeminal nerve). However, the mechanisms of this extra-territorial pain remain unclear. The ionotropic P2X(7) ATP rece...

journal_title：Journal of dental research

authors： Murasaki K,Watanabe M,Takahashi K,Ito G,Suekawa Y,Inubushi T,Hirose N,Uchida T,Tanne K

更新日期：2013-03-01 00:00:00

abstract：:After cheek pouch carcinomas were induced in hamsters by the application of dimethylbenzanthracene (DMBA) to the right pouch for 13 weeks, the animals were divided into four groups and observed for seven more weeks. The control group received no further treatment, two experimental groups had incisional biopsies perfor...

journal_title：Journal of dental research

authors： Tsiklakis K,Wood NK,Toto PD,Doemling DB

更新日期：1986-06-01 00:00:00