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https://www.readbyqxmd.com/read/28213765/association-between-signs-and-symptoms-of-bruxism-and-presence-of-tori-a-systematic-review
#1
Eduardo Bertazzo-Silveira, Juliana Stuginski-Barbosa, André Luís Porporatti, Bruce Dick, Carlos Flores-Mir, Daniele Manfredini, Graziela De Luca Canto
OBJECTIVE: This systematic review aims to answer the question: "Is there an association between any specific signs and symptoms of bruxism and the presence of tori?" MATERIAL AND METHODS: Observational studies, which evaluated the association between signs and symptoms of bruxism and tori, were selected. Signs and symptoms of bruxism (such as teeth grinding, jaw clenching, abnormal tooth wear, facial muscle hypertrophy, pain, or fatigue) had to be determined by questionnaire or anamnesis and tori within clinical assessment...
February 17, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28210435/role-of-thr399ile-and-asp299gly-polymorphisms-of-toll-like-receptor-4-gene-in-acute-dental-abscess
#2
Ebrahim Miri-Moghaddam, Narges Farhad-Mollashahi, Elnaz Baghaee, Ali Bazi, Yasaman Garme
BACKGROUND: Apical Periodontitis (AP) is an inflammatory disease that affects the tissues surrounding the root end of a tooth. The disease which is caused by endodontic infections presents in different clinical ways including development of an acute abscess. Recent studies have provided information suggesting role of a multitude of factors in pathogenesis of acute apical abscess (AAA). In this case-control study, our goal was to evaluate the frequency and potential role of two common polymorphisms of toll like receptor-4 (TLR-4) gene; Thr399Ile (1196 C>T) and Asp299Gly (+896 A>G), in 50 patients with AAA as cases and 50 patients with asymptomatic apical periodontitis (AAP) as controls...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210433/effect-of-adhesive-layers-on-microshear-bond-strength-of-nanocomposite-resin-to-dentin
#3
Nayef H Felemban, Mohamed I Ebrahim
BACKGROUND: Bond strength of adhesive layer can absorb unwanted stresses of polymerization shrinkage in composite resin restorations; increased microshear bond strength can prevent failure of restoration materials, the purpose of this study was to evaluate the effect of adhesive layers on microshear bond strength of nanocomposite resin to dentin. MATERIAL AND METHODS: Two different types of adhesive systems: universal adhesive (ExciTE) and newly developed adhesive (Nano-Bond), and one type of light-cured resin restorative material (Nanocomposite resin) were used in this study...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28209191/knowledge-of-caries-risk-factors-indicators-among-japanese-and-irish-adult-patients-with-different-socio-economic-profiles-a-cross-sectional-study
#4
Makiko Nishi, Máiréad Harding, Virginia Kelleher, Helen Whelton, Finbarr Allen
BACKGROUND: A previous study has shown deficient knowledge of caries risk factors/indicators in a Japanese adult population regarded to have a high interest in preventive dentistry. No prior research has investigated caries risk knowledge in an Irish adult population. We hypothesise there may be unexpected differences or similarities in knowledge across countries with similar levels of economic development when comparing groups with different socio-economic and cultural profiles. Understanding what influences knowledge is important for the development of effective and efficient caries prevention strategies...
February 16, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28209019/efficacy-of-specific-plant-products-on-microorganisms-causing-dental-caries
#5
M Rajini Kanth, A Ravi Prakash, G Sreenath, Vikram Simha Reddy, S Huldah
INTRODUCTION: Dental caries and periodontal diseases are the most common oral diseases seen globally, both in developed and developing countries. Oral microorganisms that is gram positive and gram negative bacteria are known to be involved in causation of these diseases. Nowadays commercially available dentrifices and mouth rinses are known to contain ingredients that can alter the oral microbial flora and have undesirable side effects such as vomiting, diarrhoea, disarrangement of oral, intestinal flora and tooth staining...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207178/dental-development-in-down-syndrome-and-healthy-children-a-comparative-study-using-the-demirjian-method
#6
M S van der Linden, S Vucic, D J F van Marrewijk, E M Ongkosuwito
OBJECTIVE: In children with Down syndrome, the timing of dental eruption is important for orthodontics treatment planning. Aim of this study was to determine whether tooth eruption and development of the dentition in children with Down syndrome are impaired. MATERIAL AND METHODS: Dental development was scored on orthopantomograms (OPTs) of 95 children with Down syndrome. The dental age was determined at the left mandibular side according to the Demirjian method and by converting the assigned scores to the dental maturity score...
February 16, 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28203028/-unerupted-first-deciduous-molar-located-higher-to-the-first-premolar-a-case-report
#7
Y Zhan, H Liu
Tooth eruption is defined as the movement of a tooth from its site of development within the alveolar process to its functional position in the oral cavity. The process of tooth eruption can be divided into different phases: pre-eruptive bone stage, alveolar bone stage, mucosal stage, preocclusal stage, occlusal stage and maturation stage. Any disturbance in these phases can lead to eruptive anomalies. The incidence of unerupted teeth is usually higher among permanent teeth than among deciduous ones. Of the primary teeth reported as unerupted, second deciduous molars are the teeth most frequently involved, followed by primary central incisors...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28203006/-observation-of-bone-morphology-in-furcation-defects-of-mandibular-molars-using-cone-beam-computed-tomography
#8
J Zhu, X Y Ouyang
OBJECTIVE: To observe mesial-distal bone morphology in classes II and III furcation involvements (FI) of mandibular molars using cone beam computed tomography (CBCT), to develop a classification system of mesial-distal bone morphology of furcation defects and to observe the intrabony defects on CBCT images. METHODS: Based on the existing CBCT data, the mandibular molars with horizontal bone defects in furcation area were observed. One hundred and seventeen sites of 81 mandibular molars with class II or class III FIclassified on CBCT images were included...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28202949/clinical-diversity-caused-by-novel-ighmbp2-variants
#9
Jun-Hui Yuan, Akihiro Hashiguchi, Akiko Yoshimura, Hiroshi Yaguchi, Koji Tsuzaki, Azusa Ikeda, Kenji Wada-Isoe, Masahiro Ando, Tomonori Nakamura, Yujiro Higuchi, Yu Hiramatsu, Yuji Okamoto, Hiroshi Takashima
Immunoglobulin helicase μ-binding protein 2 (IGHMBP2) gene is responsible for Charcot-Marie-Tooth disease (CMT) type 2S and spinal muscular atrophy with respiratory distress type 1 (SMARD1). From June 2014 to December 2015, we collected 408 cases, who referred to our genetic laboratory for genetic analysis, suspected with CMT disease or other inherited peripheral neuropathies (IPNs) on the basis of clinical manifestations and electrophysiological studies. Mutation screening was performed using Ion AmpliSeq Custom Panels, which comprise 72 disease-causing or candidate genes of IPNs...
February 16, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28198538/role-of-pin1-on-in-vivo-periodontal-tissue-and-in-vitro-cells
#10
K-H Park, E-H Cho, W-J Bae, H-S Kim, H-C Lim, Y-D Park, M-O Lee, E-S Cho, E-C Kim
BACKGROUND: Although expression of peptidyl-prolyl cis/trans isomerase NIMA-interacting 1 (PIN1) was reported in bone tissue, the precise role of PIN1 in periodontal tissue and cells remain unclear. MATERIAL & METHODS: To elucidate the roles of PIN1 in periodontal tissue, its expression in periodontal tissue and cells, and effects on in vitro 4 osteoblast differentiation and the underlying signaling mechanisms were evaluated. RESULTS: PIN1 was expressed in mouse periodontal tissues including periodontal ligament cells (PDLCs), cementoblasts and osteoblasts at the developing root formation stage (postnatal, PN14) and functional stage of tooth (PN28)...
February 15, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28196330/decellularized-human-dental-pulp-as-a-scaffold-for-regenerative-endodontics
#11
J S Song, K Takimoto, M Jeon, J Vadakekalam, N B Ruparel, A Diogenes
Teeth undergo postnatal organogenesis relatively late in life and only complete full maturation a few years after the crown first erupts in the oral cavity. At this stage, development can be arrested if the tooth organ is damaged by either trauma or caries. Regenerative endodontic procedures (REPs) are a treatment alternative to conventional root canal treatment for immature teeth. These procedures rely on the transfer of apically positioned stem cells, including stem cells of the apical papilla (SCAP), into the root canal system...
February 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28196135/mammalian-enamel-maturation-crystallographic-changes-prior-to-tooth-eruption
#12
Anna Kallistová, Ivan Horáček, Miroslav Šlouf, Roman Skála, Michaela Fridrichová
Using the distal molar of a minipig as a model, we studied changes in the microstructural characteristics of apatite crystallites during enamel maturation (16-23 months of postnatal age), and their effects upon the mechanical properties of the enamel coat. The slow rate of tooth development in a pig model enabled us to reveal essential heterochronies in particular components of the maturation process. The maturation changes began along the enamel-dentine junction (EDJ) of the trigonid, spreading subsequently to the outer layers of the enamel coat to appear at the surface zone with a 2-month delay...
2017: PloS One
https://www.readbyqxmd.com/read/28195206/dentin-sialoprotein-is-a-novel-substrate-of-matrix-metalloproteinase-9-in-vitro-and-in-vivo
#13
Guohua Yuan, Lei Chen, Junsheng Feng, Guobin Yang, Qingwen Ni, Xiaoping Xu, Chunyan Wan, Merry Lindsey, Kevin J Donly, Mary MacDougall, Zhi Chen, Shuo Chen
Dentin sialoprotein (DSP) is essential for dentinogenesis and processed into fragments in the odontoblast-like cells and the tooth compartments. Matrix metalloproteinase 9 (MMP9) is expressed in teeth from early embryonic to adult stage. Although MMP9 has been reported to be involved in some physiological and pathological conditions through processing substrates, its role in tooth development and whether DSP is a substrate of MMP9 remain unknown. In this study, the function of MMP9 in the tooth development was examined by observation of Mmp9 knockout (Mmp9-/-) mouse phenotype, and whether DSP is a substrate of MMP9 was explored by in vitro and in vivo experiments...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28191927/foldectures-3d-molecular-architectures-from-self-assembly-of-peptide-foldamers
#14
Sung Hyun Yoo, Hee-Seung Lee
The wide range of fascinating supramolecular architectures found in nature, from DNA double helices to giant protein shells, inspires researchers to mimic the diverse shapes and functions of natural systems. Thus, a variety of artificial molecular platforms have been developed by assembling DNA-, peptide-, and protein-based building blocks for medicinal and biological applications. There has also been a significant interest in the research of non-natural oligomers (i.e., foldamers) that fold into well-defined secondary structures analogous to those found in proteins, because the assemblies of foldamers are expected not only to form biomimetic supramolecular architectures that resemble those of nature but also to display unique functions and unprecedented topologies at the same time due to their different folding propensities from those of natural building blocks...
February 13, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28190924/hyperglycemia-simultaneously-induces-initial-caries-development-and-enhances-spontaneous-occlusal-surface-wear-in-molar-teeth-related-to-parotid-gland-disorder-in-alloxan-induced-diabetic-rats
#15
Taiki Nishimoto, Yasushi Kodama, Tetsuro Matsuura, Kiyokazu Ozaki, Yoshihiko Taniguchi
Diabetes and salivary gland dysfunction are major factors that induce dental caries in experimental animals, but there are no reports analyzing the association of dental caries and salivary glands in an animal model of diabetes mellitus (DM). To clarify the initial development of dental caries and preceding salivary gland disorder, we performed a histopathological analysis on teeth and salivary glands in diabetic Wistar rats 7 weeks after alloxan treatment (DM group) in comparison with nondiabetic rats (Non-DM group) and functional analysis on saliva secretion during the experimental period...
January 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/28190588/survival-of-the-apical-papilla-and-its-resident-stem-cells-in-a-case-of-advanced-pulpal-necrosis-and-apical-periodontitis
#16
Vanessa Chrepa, Brandon Pitcher, Michael A Henry, Anibal Diogenes
INTRODUCTION: Apical papilla represents a source of an enriched mesenchymal stem cell (MSC) population (stem cells of the apical papilla [SCAPs]) that modulates root development and may participate in regenerative endodontic procedures in immature teeth with pulp necrosis. The characteristics and phenotype of this tissue in the presence of inflammation are largely unknown. The purpose of this study was to characterize a human apical papilla sample that was isolated from an immature tooth with pulp necrosis and apical periodontitis...
February 9, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28187707/transcriptome-analysis-of-coding-and-long-non-coding-rnas-highlights-the-regulatory-network-of-cascade-initiation-of-permanent-molars-in-miniature-pigs
#17
Fu Wang, Yang Li, Xiaoshan Wu, Min Yang, Wei Cong, Zhipeng Fan, Jinsong Wang, Chunmei Zhang, Jie Du, Songlin Wang
BACKGROUND: In diphyodont mammals, the additional molars (permanent molars) bud off from the posterior-free end of the primary dental lamina compared with successional teeth (replacement teeth) budding off from the secondary dental lamina. The diphyodont miniature pig has proved to be a valuable model for studying human molar morphogenesis. The additional molars show a sequential initiation pattern related to the specific tooth development stage of additional molars in miniature pigs during the morphogenesis of additional molars...
February 10, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28187622/a-new-species-in-the-i-simulium-i-i-vernum-i-group-from-the-alps-of-southern-germany-i-simulium-i-i-arminii-i-diptera-simuliidae
#18
Gunther Seitz, Peter H Adler
Simulium arminii new species is described from the Alps of southern Germany. It is characterized by a broad trapezoidal ventral plate in the male, long slender arms of the genital fork in the female, a weakly developed or absent anterodorsal projection on the thinly woven cocoon, and a long median hypostomal tooth in the larva. The species is chromosomally similar to Simulium beltukovae (Rubtsov) but differs most conspicuously by the absence of a chromocenter. It is known from two small, springfed streams above the timber line, in association with Prosimulium latimucro (Enderlein) and Simulium bavaricum Seitz and Adler...
January 26, 2017: Zootaxa
https://www.readbyqxmd.com/read/28185382/autogenous-bone-block-grafting-provides-facial-implant-tissue-stability-long-term
#19
Fernando Verdugo, Agurne Uribarri, Antonio D'Addona
BACKGROUND: Mucosal recession (MR) and bone loss can compromise anterior implant esthetics. PURPOSE: To evaluate tissue stability and clinical outcomes of anterior implants augmented with autogenous block transplants long-term. MATERIALS AND METHODS: This prospective cross-sectional clinical study analyzed facial tissue recession of anterior implants augmented with autogenous bone blocks and compared them to adjacent teeth in forty patients 52 months post-augmentation...
February 10, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28183665/degradation-in-the-fatigue-crack-growth-resistance-of-human-dentin-by-lactic-acid
#20
Santiago Orrego, Huakun Xu, Dwayne Arola
The oral cavity frequently undergoes localized changes in chemistry and level of acidity, which threatens the integrity of the restorative material and supporting hard tissue. The focus of this study was to evaluate the changes in fatigue crack growth resistance of dentin and toughening mechanisms caused by lactic acid exposure. Compact tension specimens of human dentin were prepared from unrestored molars and subjected to Mode I opening mode cyclic loads. Fatigue crack growth was achieved in samples from mid- and outer-coronal dentin immersed in either a lactic acid solution or neutral conditions...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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