Influence of initial flaw size on crack growth in air-tempered porcelain.

abstract：:Our long-term objective is to devise methods to improve osteotomy site preparation and, in doing so, facilitate implant osseointegration. As a first step in this process, we developed a standardized oral osteotomy model in ovariectomized rats. There were 2 unique features to this model: first, the rats exhibited an os...

journal_title：Journal of dental research

authors： Chen CH,Pei X,Tulu US,Aghvami M,Chen CT,Gaudillière D,Arioka M,Maghazeh Moghim M,Bahat O,Kolinski M,Crosby TR,Felderhoff A,Brunski JB,Helms JA

更新日期：2018-04-01 00:00:00

abstract：:Interfacial bonding and stability of gamma-methacryloxypropyltrimethoxysilane with silica surfaces have been studied by means of infrared spectroscopy. The addition of n-propylamine enhances silanization of gamma-methacryloxypropyltrimethoxysilane to silica surfaces in normal aliphatic hydrocarbons, and cyclohexane yi...

journal_title：Journal of dental research

authors： Chen TM,Brauer GM

更新日期：1982-12-01 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：:Chondroitin sulfate is up-regulated in granulation tissue during wound healing. To investigate the role of chondroitin sulfate in the wound-healing process after surgical repair of cleft palate, we isolated and cultured rabbit palatal fibroblasts. Treatment with chondroitin-6-sulfate resulted in a dose-dependent incre...

journal_title：Journal of dental research

authors： Zou XH,Foong WC,Cao T,Bay BH,Ouyang HW,Yip GW

更新日期：2004-11-01 00:00:00

abstract：:Zirconia-based restorations often fracture from chipping and/or delamination of the porcelain veneers. We hypothesized that veneer chipping/delamination is a result of the propagation of near-contact-induced partial cone cracks on the occlusal surface under mastication. Masticatory loading involves the opposing tooth ...

journal_title：Journal of dental research

authors： Kim JW,Kim JH,Janal MN,Zhang Y

更新日期：2008-12-01 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

authors： Wilson CJ

更新日期：1979-09-01 00:00:00

abstract：:The tongue exerts crucial functions in our daily life. However, we know very little about the regulatory mechanisms of mammalian tongue development. In this review, we summarize recent findings of the molecular and cellular mechanisms that control tissue-tissue interactions during tongue morphogenesis. Specifically, c...

journal_title：Journal of dental research

authors： Parada C,Han D,Chai Y

更新日期：2012-06-01 00:00:00

abstract：:As an approach for improving the outcome and predictability of periodontal regenerative therapies, we have focused on determining the responses of cells within the local environment to putative regenerative factors. This study examined the effects of bone morphogenetic protein-2 (BMP-2) on murine cementoblasts in vitr...

journal_title：Journal of dental research

authors： Zhao M,Berry JE,Somerman MJ

更新日期：2003-01-01 00:00:00

abstract：:Since edentate subjects have a reduced masticatory function, it can be expected that the morphology of the cancellous bone of their mandibular condyles has changed according to the altered mechanical environment. In the present study, the morphology of cylindrical cancellous bone specimens of the mandibular condyles o...

journal_title：Journal of dental research

authors： Giesen EB,Ding M,Dalstra M,van Eijden TM

更新日期：2004-03-01 00:00:00

abstract：:Bone remodeling is a complex process regulated by several mediators. Recent work has revealed that cytokines and growth factors have significant effects on bone cell metabolism. However, little information is available concerning the production of cytokines during orthodontic tooth movement in human subjects, and ther...

journal_title：Journal of dental research

authors： Uematsu S,Mogi M,Deguchi T

更新日期：1996-01-01 00:00:00

abstract：:Microducers and modified cephalometric roentgenogram techniques were used to study maximum biting forces and moments in an adult male. The force at the second molar was approximately 10% greater than that at the first molar. At the second molar, the moment of force was approximately 15% less than its value at the firs...

journal_title：Journal of dental research

authors： Mansour RM,Reynik RJ

更新日期：1975-01-01 00:00:00

abstract：:Cell kinetics of rat molar periodontal ligament (PDL) during orthodontically-induced osteogenesis revealed: 1) primary growth fraction of 59%, 2) proliferating cells from throughout the PDL migrate toward the bone surface, 3) preosteoblasts, capable of forming osteoblasts without synthesizing DNA, are present in the P...

journal_title：Journal of dental research

authors： Roberts WE,Chase DC

更新日期：1981-02-01 00:00:00

abstract：:Setting reactions and compressive strengths of a self-hardening calcium phosphate cement (CPC) were investigated. The CPC consists of tetracalcium phosphate (TTCP) and anhydrous dicalcium phosphate (DCPA). The cement specimens were prepared by mixing 0.7 g of the powder (TTCP 72.9 wt% + DCPA 27.1 wt%) with 0.175 mL of...

journal_title：Journal of dental research

authors： Fukase Y,Eanes ED,Takagi S,Chow LC,Brown WE

更新日期：1990-12-01 00:00:00

abstract：:The temporal and spatial patterns in which teeth are initiated in the growing jaws of embryos are constant for a species but different for different species. The sources of the patterns have been explained in two ways. First, they are the outcome of reactions between molecules created at stationary targets and those w...

journal_title：Journal of dental research

authors： Osborn JW

更新日期：1998-09-01 00:00:00

abstract：:Breastfeeding is important for health and development. Yet, the interaction between breastfeeding duration and usage of fluoridated water on caries experience has not been investigated. This study examined exposure to fluoridation as an effect modifier of the association between breastfeeding duration and caries. The ...

journal_title：Journal of dental research

authors： Ha DH,Spencer AJ,Peres KG,Rugg-Gunn AJ,Scott JA,Do LG

更新日期：2019-07-01 00:00:00

abstract：:The balance between bone resorption and bone formation is vital for maintenance and regeneration of alveolar bone and supporting structures around teeth and dental implants. Tissue regeneration in the oral cavity is regulated by multiple cell types, signaling mechanisms, and matrix interactions. A goal for periodontal...

journal_title：Journal of dental research

authors： Larsson L,Decker AM,Nibali L,Pilipchuk SP,Berglundh T,Giannobile WV

更新日期：2016-03-01 00:00:00

abstract：:Defined sets of transcriptional factors can reprogram human somatic cells to induced pluripotent stem (iPS) cells. However, many types of human cells are not easily accessible to minimally invasive procedures. Here we evaluated dental pulp cells (DPCs) as an optimal source of iPS cells, since they are easily obtained ...

journal_title：Journal of dental research

authors： Tamaoki N,Takahashi K,Tanaka T,Ichisaka T,Aoki H,Takeda-Kawaguchi T,Iida K,Kunisada T,Shibata T,Yamanaka S,Tezuka K

更新日期：2010-08-01 00:00:00

abstract：:Stem cells are remarkable, and stem cell-based tissue engineering is an emerging field of biomedical science aiming to restore damaged tissue or organs. In dentistry and reconstructive facial surgery, it is of great interest to restore lost teeth or craniofacial bone defects using stem cell-mediated therapy. In the cr...

journal_title：Journal of dental research

authors： Zhao H,Chai Y

更新日期：2015-11-01 00:00:00

abstract：:Bacteria attach to teeth and oral mucosal surfaces in a surprisingly selective manner, and attachment appears to be the first step in the colonization process. Attachment is thought to involve lectin-like and/or hydrophobic ligands, called adhesins, often present in bacterial surface appendages which interact with rec...

journal_title：Journal of dental research

authors： Gibbons RJ

更新日期：1984-03-01 00:00:00

abstract：:Periodontitis is characterized by periodontal tissue destruction. Since interleukin-17 (IL-17) has been reported to up-regulate IL-1beta and tumor necrosis factor-alpha (TNF-alpha), it was hypothesized that it is increased in periodontitis and up-regulates these cytokines and tissue-destructive matrix metalloproteinas...

journal_title：Journal of dental research

authors： Beklen A,Ainola M,Hukkanen M,Gürgan C,Sorsa T,Konttinen YT

更新日期：2007-04-01 00:00:00

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...

journal_title：Journal of dental research

authors： Mair LH

更新日期：1991-03-01 00:00:00

abstract：:The oral microbiome consists of a planktonic microbiome residing in saliva and an adhering microbiome (the biofilm adhering to oral hard and soft tissues). Here we hypothesized that possible differences in microbial composition of the planktonic and adhering oral microbiome on teeth can be related to the forces by whi...

journal_title：Journal of dental research

authors： Wessel SW,Chen Y,Maitra A,van den Heuvel ER,Slomp AM,Busscher HJ,van der Mei HC

更新日期：2014-01-01 00:00:00

abstract：:The flexure moduli of elasticity of solid and multi-stranded orthodontic wires were determined. Results for the solid wires approximated their tensile values, but the differences were statistically significant for the stainless steel, chromium-cobalt-nickel, and nickel-titanium alloys. The flexure moduli of the multi-...

journal_title：Journal of dental research

authors： Goldberg AJ,Morton J,Burstone CJ

更新日期：1983-07-01 00:00:00

abstract：:Ten cats were immunized with subcutaneous injections of keyhole limpet hemocyanin (KLH). After it was determined that the experimental animals had developed circulating antibodies to KLH, challenge doses of KLH were administered via the root canal system. The radiographic and histologic findings suggest that antigen-a...

journal_title：Journal of dental research

authors： Torabinejad M,Kiger RD

更新日期：1980-01-01 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

authors： Tavakkoli-Jou M,Miller AJ,Kapila S

更新日期：1999-08-01 00:00:00

abstract：:The range of substrates transported by the sugar-binding protein-dependent msm (multiple sugar metabolism) system of S. mutans was investigated. By determining the ability of unlabeled sugar to compete with radiolabeled melibiose transport, we have demonstrated that the transported sugars included a number of carbohyd...

journal_title：Journal of dental research

authors： Tao L,Sutcliffe IC,Russell RR,Ferretti JJ

更新日期：1993-10-01 00:00:00

abstract：:Calcitonin gene-related peptide (CGRP) plays a crucial role in the modulation of orofacial pain, and we hypothesized that CGRP mediated a neuron-glia crosstalk in orofacial pain. The objective of this study was to elucidate the mechanisms whereby CGRP mediated trigeminal neuron-glia crosstalk in modulating orofacial p...

journal_title：Journal of dental research

authors： Liang H,Hu H,Shan D,Lyu J,Yan X,Wang Y,Jian F,Li X,Lai W,Long H

更新日期：2021-01-01 00:00:00

abstract：:The objectives of the study were to describe the oral health status and treatment needs of the 5- to 6-year-old and 12-year-old children in Southern China; to describe the patterns of oral health behaviors, knowledge, and attitudes among the 12-year-olds; and to assess the effects of socio-behavioral factors on the 12...

journal_title：Journal of dental research

authors： Wong MC,Lo EC,Schwarz E,Zhang HG

更新日期：2001-05-01 00:00:00

abstract：:Several studies have shown that surgical detachment of marginal gingiva close to the cervical cementum of molar teeth in a rat mandible is a distinct stimulus for alveolar bone resorption. Recently, we found that P2X4, an ATP-receptor, is significantly up-regulated in marginal gingival cells soon after surgery. We hyp...

journal_title：Journal of dental research

authors： Binderman I,Bahar H,Jacob-Hirsch J,Zeligson S,Amariglio N,Rechavi G,Shoham S,Yaffe A

更新日期：2007-02-01 00:00:00

abstract：:Previous studies have shown that therapeutic pulsed ultrasound (pulsed) has superior stimulatory effect on bone fracture healing compared with continuous ultrasound (continuous). Our predictive hypothesis was that pulsed ultrasound can produce better bone formation during mandibular osteodistraction than continuous ul...

journal_title：Journal of dental research

authors： El-Bialy TH,Elgazzar RF,Megahed EE,Royston TJ

更新日期：2008-10-01 00:00:00