Abstract：
:The aim of this study was to evaluate the biological efficacy of a unique perpendicular protrusion of type-I collagen (Col-I) from TiO2 nanotubes (NT-EPF surface). We hypothesized that the NT-EPF surface would play bifunctional roles in stimulating platelet-mediated fibroblast recruitment and anchoring fibroblast-derived Col-I to form a perpendicular collagen assembly, mimicking the connective tissue attachment around natural teeth for the long-term maintenance of dental implants. Ti surface modification was accomplished in two steps. First, TiO2 nanotubes (NT) array was fabricated via anodization. Diameters and depths of NTs were controlled by applied voltage and duration. Subsequently, an electrophoretic fusion (EPF) method was applied to fuse Col-I into nanotube arrays in a perpendicular fashion. Surface wettability was assessed by contact angle measurement. The bioactivity of modified TiO2 surfaces was evaluated in terms of NIH3T3 fibroblast attachment, platelet activation, and collagen extension. Early attachment, aggregation, and activation of platelets as well as release of platelet-related growth factors were demonstrated on NT-EPF surfaces. Platelet-mediated NIH3T3 cells migration toward NT-EPF was significantly increased and the attached cells showed a typical fibrous morphology with elongated spindle shape. A direct linkage between pseudopod-like processes of fibroblasts to NT-EPF surfaces was observed. Furthermore, the engineered EPF collagen protrusion linked with cell-derived collagen in a perpendicular fashion. Within the limitation of this in vitro study, the TiO2 nanotube with perpendicular Col-I surface (NT-EPF) promoted better cell attachment, induced a strong platelet activation which suggested the ability to create a more robust soft tissue seal.
journal_name
Int J Oral Scijournal_title
International journal of oral scienceauthors
Chen CY,Kim DM,Lee C,Da Silva J,Nagai S,Nojiri T,Nagai Mdoi
10.1038/s41368-020-00103-3subject
Has Abstractpub_date
2020-12-30 00:00:00pages
36issue
1eissn
1674-2818issn
2049-3169pii
10.1038/s41368-020-00103-3journal_volume
12pub_type
杂志文章abstract：:Sites of implantation with compromised biology may be unable to achieve the required level of angiogenic and osteogenic regeneration. The specific function and contribution of different cell types to the formation of prevascularized, osteogenic networks in co-culture remains unclear. To determine how bone marrow-deriv...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2016.39
更新日期：2016-12-16 00:00:00
abstract：:A previous study demonstrated that alexidine has greater affinity for the major virulence factors of bacteria than chlorhexidine. The aim of this study was to compare the antimicrobial activity of 1% alexidine with that of 2% chlorhexidine using Enterococcus faecalis-infected dentin blocks. Sixty bovine dentin blocks ...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2013.11
更新日期：2013-03-01 00:00:00
abstract：:The oral microbial community is widely regarded as a latent reservoir of antibiotic resistance genes. This study assessed the molecular epidemiology, susceptibility profile, and resistance mechanisms of 35 methicillin-resistant Staphylococcus epidermidis (MRSE) strains isolated from the dental plaque of a healthy huma...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/s41368-020-0079-5
更新日期：2020-05-09 00:00:00
abstract：:When adipose-derived stem cells (ASCs) are retrieved from the stromal vascular portion of adipose tissue, a large amount of mature adipocytes are often discarded. However, by modified ceiling culture technique based on their buoyancy, mature adipocytes can be easily isolated from the adipose cell suspension and dediff...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.4248/IJOS11044
更新日期：2011-07-01 00:00:00
abstract：:Osteoporosis is a serious public bone metabolic disease. However, the mechanisms underlying bone loss combined with ageing, which is known as senile osteoporosis, remains unknown. Here we show the detailed phenotype of this disease caused by SIRT6 knock out (KO) in mice. To the best of our knowledge, this is the first...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2015.57
更新日期：2016-06-30 00:00:00
abstract：:Halitosis, bad breath or oral malodour are all synonyms for the same pathology. Halitosis has a large social and economic impact. For the majority of patients suffering from bad breath, it causes embarrassment and affects their social communication and life. Moreover,halitosis can be indicative of underlying diseases....
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.1038/ijos.2012.39
更新日期：2012-06-01 00:00:00
abstract：:Optical spectroscopy devices are being developed and tested for the screening and diagnosis of oral precancer and cancer lesions. This study reports a device that uses white light for detection of suspicious lesions and green-amber light at 545 nm that detect tissue vascularity on patients with several suspicious oral...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2014.39
更新日期：2014-09-01 00:00:00
abstract：:After teeth are replanted, there are two possible healing responses: periodontal ligament healing or ankylosis with subsequent replacement resorption. The purpose of this study was to compare the fatigue resistance of vertically fractured teeth after bonding the fragments under conditions simulating both healing modes...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2014.51
更新日期：2015-06-26 00:00:00
abstract：:Drug-induced gingival overgrowth (DIGO) is recognized as a side effect of nifedipine (NIF); however, the underlying molecular mechanisms remain unknown. In this study, we found that overexpressed miR-4651 inhibits cell proliferation and induces G0/G1-phase arrest in gingival mesenchymal stem cells (GMSCs) with or with...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/s41368-020-0076-8
更新日期：2020-03-31 00:00:00
abstract：:For a long time, oral disease is one of the major problems of the public health for its high prevalence and incidence throughout the world, which is especially true for low-income populations. Since China's economic reform in 1978, great changes have taken place in China. These changes have significant impact on and h...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.4248/IJOS11006
更新日期：2011-01-01 00:00:00
abstract：:Formation of the periodontium begins following onset of tooth-root formation in a coordinated manner after birth. Dental follicle progenitor cells are thought to form the cementum, alveolar bone and Sharpey's fibers of the periodontal ligament (PDL). However, little is known about the regulatory morphogens that contro...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2013.41
更新日期：2013-06-01 00:00:00
abstract：:In this study, we evaluate the influence of post surface pre-treatments on the bond strength of four different cements to glass fiber posts. Eighty extracted human maxillary central incisors and canines were endodontically treated and standardized post spaces were prepared. Four post pre-treatments were tested: (i) no...
journal_title：International journal of oral science
pub_type： 杂志文章,随机对照试验
doi：10.1038/ijos.2013.83
更新日期：2014-03-01 00:00:00
abstract：:Dental caries are the most prevalent chronic infections in the oral cavity, and Streptococcus mutans acts as the main cariogenic bacterial species. Antibacterial quaternary ammonium compounds (QAs) have been developed to preveFnt or treat dental caries. However, there is no report on the tolerance of S. mutans to QAs....
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2017.46
更新日期：2017-12-01 00:00:00
abstract：:Biofilms at the tooth-restoration bonded interface can produce acids and cause recurrent caries. Recurrent caries is a primary reason for restoration failures. The objectives of this study were to synthesize a novel bioactive dental bonding agent containing dimethylaminohexadecyl methacrylate (DMAHDM) and 2-methacrylo...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/s41368-018-0019-9
更新日期：2018-06-21 00:00:00
abstract：:To modify two-step experimental etch-and-rinse dentin adhesive with different concentrations of riboflavin and to study its effect on the bond strength, degree of conversion, along with resin infiltration within the demineralized dentin substrate, an experimental adhesive-system was modified with different concentrati...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2014.49
更新日期：2015-06-26 00:00:00
abstract：:Both bone morphogenetic protein 2 (BMP2) and the wingless-type MMTV integration site (WNT)/β-catenin signalling pathway play important roles in odontoblast differentiation and dentinogenesis. Cross-talk between BMP2 and WNT/β-catenin in osteoblast differentiation and bone formation has been identified. However, the ro...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2015.7
更新日期：2015-06-26 00:00:00
abstract：:All-trans retinoic acid (ATRA) inhibits matrix metalloproteinase (MMP)-2 and MMP-9 in synovial fibroblasts, skin fibroblasts, bronchoalveolar lavage cells and cancer cells, but activates MMP-9 in neuroblast and leukemia cells. Very little is known regarding whether ATRA can activate or inhibit MMPs in human dental pul...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2013.63
更新日期：2014-09-01 00:00:00
abstract：:The aim of the present real time in vivo micro-computed tomography (µCT) and histologic experiment was to assess the efficacy of guided bone regeneration (GBR) around standardized calvarial critical size defects (CSD) using bone marrow-derived mesenchymal stem cells (BMSCs), and collagen membrane (CM) with and without...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2015.34
更新日期：2016-03-30 00:00:00
abstract：:It is known that human papillomavirus (HPV) infection can cause squamous cell neoplasms at several sites, such as cervix uteri carcinoma and oral squamous carcinoma. There is little information on the expression of HPV and its predictive markers in tumours of the major and minor salivary glands of the head and neck. W...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2014.28
更新日期：2015-03-23 00:00:00
abstract：:Along with the development of new materials, advanced medical imaging and surgical techniques, osseointegrated dental implants are considered a successful and constantly evolving treatment modality for the replacement of missing teeth in patients with complete or partial edentulism. The importance of restoring the per...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.1038/ijos.2017.1
更新日期：2017-03-01 00:00:00
abstract：:Tooth development is a complex process that involves precise and time-dependent orchestration of multiple genetic, molecular, and cellular interactions. Ameloblastin (AMBN, also named "amelin" or "sheathlin") is the second most abundant enamel matrix protein known to have a key role in amelogenesis. Amelogenesis imper...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/s41368-018-0027-9
更新日期：2018-09-03 00:00:00
abstract：:The presence of a large palatal or maxillary defect after partial or total maxillectomy for tumor, trauma or congenital deformation poses a challenge to prosthodontists, particularly when the use of an implant cannot be considered. This case report described the use of an air valve in a hollow silicone obturator to ma...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2012.22
更新日期：2012-06-01 00:00:00
abstract：AIM:To examine what impact the loss of funding had on the utilization of the oral pathology service. METHODOLOGY:Biopsy records were retrieved and examined in the two year period before and after the elimination of the subsidies in 2003. RESULTS:After the loss of funding, there was a 31% decrease in the number of spe...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.4248/IJOS.09032
更新日期：2009-09-01 00:00:00
abstract：:Apoptosis or programmed cell death plays an essential role in chemotherapy-induced tumor cell killing, and inducers of apoptosis are commonly used in cancer therapy. Treatment with Zelkova serrata extracts was performed in human gingival fibroblast (HGF), mouth epidermoid carcinoma cell (KB), lower gingival squamous c...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2012.14
更新日期：2012-06-01 00:00:00
abstract：:Effective control of oral biofilm infectious diseases represents a major global challenge. Microorganisms in biofilms exhibit increased drug tolerance compared with planktonic cells. The present review covers innovative antimicrobial strategies for controlling oral biofilm-related infections published predominantly ov...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.1038/s41368-019-0062-1
更新日期：2019-10-01 00:00:00
abstract：:The human microbiome functions as an intricate and coordinated microbial network, residing throughout the mucosal surfaces of the skin, oral cavity, gastrointestinal tract, respiratory tract, and reproductive system. The oral microbiome encompasses a highly diverse microbiota, consisting of over 700 microorganisms, in...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.1038/s41368-020-0082-x
更新日期：2020-04-30 00:00:00
abstract：:This in vitro study aims to evaluate the crystal and surface microstructure of dental enamel after cold-light bleaching treatment. Twelve sound human premolars were cross-split into four specimens, namely, mesio-buccal (Group LP), disto-buccal (Group P), mesio-lingual (Group NP) and disto-lingual (Group L) specimens. ...
journal_title：International journal of oral science
pub_type： 杂志文章,随机对照试验
doi：10.1038/ijos.2012.70
更新日期：2012-12-01 00:00:00
abstract：:This study aimed to compare epithelial cells derived from human embryonic stem cells (hESCs) to human ameloblast-lineage cells (ALCs), as a way to determine their potential use as a cell source for ameloblast regeneration. Induced by various concentrations of bone morphogenetic protein 4 (BMP4), retinoic acid (RA) and...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2013.14
更新日期：2013-03-01 00:00:00
abstract：:Dentin matrix metalloproteinases (MMPs) are a family of host-derived proteolytic enzymes trapped within mineralized dentin matrix, which have the ability to hydrolyze the organic matrix of demineralized dentin. After bonding with resins to dentin there are usually some exposed collagen fibrils at the bottom of the hyb...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.4248/IJOS.09044
更新日期：2009-12-01 00:00:00
abstract：:The root is crucial for the physiological function of the tooth, and a healthy root allows an artificial crown to function as required clinically. Tooth crown development has been studied intensively during the last few decades, but root development remains not well understood. Here we review the root development proc...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.1038/ijos.2012.61
更新日期：2012-12-01 00:00:00
