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https://www.readbyqxmd.com/read/28350880/corrosion-of-dental-alloys-in-artificial-saliva-with-streptococcus-mutans
#1
Chunhui Lu, Yuanli Zheng, Qun Zhong
A comparative study of the corrosion resistance of CoCr and NiCr alloys in artificial saliva (AS) containing tryptic soy broth (Solution 1) and Streptococcus mutans (S. mutans) species (Solution 2) was performed by electrochemical methods, including open circuit potential measurements, impedance spectroscopy, and potentiodynamic polarization. The adherence of S. mutans to the NiCr and CoCr alloy surfaces immersed in Solution 2 for 24 h was verified by scanning electron microscopy, while the results of electrochemical impedance spectroscopy confirmed the importance of biofilm formation for the corrosion process...
2017: PloS One
https://www.readbyqxmd.com/read/28346861/biomimetic-remineralization-of-carious-lesions-by-self-assembling-peptide
#2
L Kind, S Stevanovic, S Wuttig, S Wimberger, J Hofer, B Müller, U Pieles
Caries is the most common disease in the world. Great efforts have been undertaken for prevention and to identify a regenerative treatment solution for dental caries. Self-assembling β-sheet forming peptides have previously shown to form 3-dimensional fiber networks supporting tissue regeneration. In particular, the self-assembling peptide P11-4 has shown potential in the treatment and prevention of dental caries. It has previously been shown that application of monomeric P11-4 solution to early carious lesions can increase net mineral gain by forming de novo hydroxyapatite crystals...
March 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28346706/tooth-loss-in-generalized-aggressive-periodontitis-prognostic-factors-after-17-years-of-supportive-periodontal-treatment
#3
Christian Graetz, Sonja Sälzer, Anna Plaumann, Peter Schlattmann, Maren Kahl, Claudia Springer, Christof Dörfer, Falk Schwendicke
AIM: This retrospective longitudinal study assessed the risk of and prognostic factors for tooth loss in patients with generalized aggressive periodontitis (GAgP) after periodontal treatment in a university setting. METHODS: 57 patients (1505 teeth) were examined before (T0) and after active periodontal therapy (APT, T1) as well as after 17.4±4.8 [range: 9-28] years of supportive periodontal therapy (SPT, T2). Descriptive statistics and a Cox-proportional-hazards shared-frailty model were applied...
March 27, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28346696/do-people-trust-dentists-development-of-the-dentist-trust-scale
#4
Jason M Armfield, Manon Ketting, Sergio Chrisopoulos, Sarah R Baker
BACKGROUND: This study aimed to adapt a measure of trust in physicians generally to trust in dentists and to assess the reliability and validity of the measure. METHODS: Questionnaire data were collected from a simple random sample of 596 Australian adults. The 11-item General Trust in Physicians Scale (Hall et al., 2002) was modified to apply to dentists. RESULTS: The Dentist Trust Scale (DTS) had good internal consistency (Cronbach's alpha = 0...
March 27, 2017: Australian Dental Journal
https://www.readbyqxmd.com/read/28346501/a-tissue-specific-role-for-intraflagellar-transport-genes-during-craniofacial-development
#5
Elizabeth N Schock, Jaime N Struve, Ching-Fang Chang, Trevor J Williams, John Snedeker, Aria C Attia, Rolf W Stottmann, Samantha A Brugmann
Primary cilia are nearly ubiquitous, cellular projections that function to transduce molecular signals during development. Loss of functional primary cilia has a particularly profound effect on the developing craniofacial complex, causing several anomalies including craniosynostosis, micrognathia, midfacial dysplasia, cleft lip/palate and oral/dental defects. Development of the craniofacial complex is an intricate process that requires interactions between several different tissues including neural crest cells, neuroectoderm and surface ectoderm...
2017: PloS One
https://www.readbyqxmd.com/read/28345756/the-dawn-of-dentistry-in-the-late-upper-paleolithic-an-early-case-of-pathological-intervention-at-riparo-fredian
#6
Gregorio Oxilia, Flavia Fiorillo, Francesco Boschin, Elisabetta Boaretto, Salvatore A Apicella, Chiara Matteucci, Daniele Panetta, Rossella Pistocchi, Franca Guerrini, Cristiana Margherita, Massimo Andretta, Rita Sorrentino, Giovanni Boschian, Simona Arrighi, Irene Dori, Giuseppe Mancuso, Jacopo Crezzini, Alessandro Riga, Maria C Serrangeli, Antonino Vazzana, Piero A Salvadori, Mariangela Vandini, Carlo Tozzi, Adriana Moroni, Robin N M Feeney, John C Willman, Jacopo Moggi-Cecchi, Stefano Benazzi
OBJECTIVES: Early evidence for the treatment of dental pathology is found primarily among food-producing societies associated with high levels of oral pathology. However, some Late Pleistocene hunter-gatherers show extensive oral pathology, suggesting that experimentation with therapeutic dental interventions may have greater antiquity. Here, we report the second earliest probable evidence for dentistry in a Late Upper Paleolithic hunter-gatherer recovered from Riparo Fredian (Tuscany, Italy)...
March 27, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28345658/nephronectin-plays-critical-roles-in-sox2-expression-and-proliferation-in-dental-epithelial-stem-cells-via-egf-like-repeat-domains
#7
Chieko Arai, Keigo Yoshizaki, Kanako Miyazaki, Kan Saito, Aya Yamada, Xue Han, Keita Funada, Emiko Fukumoto, Naoto Haruyama, Tsutomu Iwamoto, Ichiro Takahashi, Satoshi Fukumoto
Tooth development is initiated by epithelial-mesenchymal interactions via basement membrane (BM) and growth factors. In the present study, we found that nephronectin (Npnt), a component of the BM, is highly expressed in the developing tooth. Npnt localizes in the BM on the buccal side of the tooth germ and shows an expression pattern opposite that of the dental epithelial stem cell marker Sox2. To identify the roles of Npnt during tooth development, we performed knockdown and overexpression experiments using ex vivo organ and dental epithelial cell cultures...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345424/does-a-social-behavioural-gradient-in-dental-health-exist-among-adults-a-cross-sectional-study
#8
Mariantonietta Arrica, Giovanna Carta, Fabio Cocco, Maria Grazia Cagetti, Silvana Sale, Gaetano Ierardo, Laura Strohmenger, Livia Ottolenghi, Guglielmo Campus
Objective To explore the potential presence of a social/behavioural gradient in dental health among Italian adults using a cross-sectional study. Methods Caries indices were recorded among 480 subjects (52.9% men, 47.1% women) who also completed a structured self-administered social and behavioural questionnaire. A social/behavioural gradient was generated as the sum of the worst circumstances recorded on the questionnaire (cariogenic diet, smoking, lowest occupational profile, brushing teeth < twice daily, lowest educational level, uneven dental examination attendance)...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28345253/attending-and-avoiding-dental-appointments-do-bright-and-dark-motivational-paths-have-a-role
#9
A E Münster Halvari, H Halvari, E L Deci
OBJECTIVE: The aim of this study was to test a self-determination theory (SDT) process model of the "bright" and the "dark" motivational pathways through dental attendance or avoidance to oral health. METHODS: A cross-sectional study was conducted among 322 students from all study disciplines at the University of Oslo. Participants responded to a survey with validated questionnaires. Structural equation modelling was used to test the SDT model, and a bootstrapping procedure was used to test the indirect links in the model...
March 26, 2017: International Journal of Dental Hygiene
https://www.readbyqxmd.com/read/28345241/the-new-swedish-report-on-shaken-baby-syndrome-is-misleading
#10
Kerstin Hellgren, Ann Hellström, Anna-Lena Hård, Lena Jacobson, Ulrika Lidén, Stefan Löfgren, Kristina Teär Fahnehjelm, Jan Ygge
In this issue of Acta Paediatrica, Professor Alex Levin, Director of the Pediatric Ophthalmology and Strabismus Service at Wills Eye Hospital, (PA, USA), expresses relevant concerns (1) about a report produced by the Swedish Agency for Technology Assessment of Health and Social Services (SBU) (2) and summarized in a paper by Lynøe et al (3). He also provides necessary input on the importance of the morphology and distribution of retinal hemorrhages in diagnosing different causes of retinal bleedings. SBU undertakes independent assessments of methods used in health, medical, dental and social services and services provided to persons with certain functional disabilities...
March 27, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28345213/caries-experience-of-children-in-primary-schools-with-long-term-tooth-brushing-programs-a-pilot-australian-study
#11
T Cakar, L Harrison-Barry, M L Pukallus, S Kazoullis, W K Seow
OBJECTIVE: The aim of this study was to evaluate a primary school-based tooth brushing (TB) program conducted in a low socio-economic area of Queensland, Australia, to determine its effectiveness in reducing caries. METHODS: Records kept at the central dental clinic of the district were used to analyse the caries experience (decayed, missing, filled teeth [dmft/DMFT]) and caries prevalence in children from two schools with long-term TB programs (TB) (N=1191) and three Non-TB schools (N=553)...
March 26, 2017: International Journal of Dental Hygiene
https://www.readbyqxmd.com/read/28344975/equine-dental-pulp-connective-tissue-particles-reduced-lameness-in-horses-in-a-controlled-clinical-trial
#12
Alicia L Bertone, Nathalie A Reisbig, Allison H Kilborne, Mari Kaido, Navid Salmanzadeh, Rebecca Lovasz, Joy L Sizemore, Logan Scheuermann, Rosalind J Kopp, Lisa J Zekas, Matthew T Brokken
OBJECTIVE: To assess if injection of allogeneic dental pulp tissue particles would improve lameness in horses with naturally occurring osteoarthritis (OA) or soft tissue (ST) injury. DESIGN: Prospective, randomized, blinded, and controlled clinical trial and client survey assessment. ANIMALS: Forty lame client-owned horses. PROCEDURES: Sterile dental pulp, recovered from otherwise healthy foals that perish during dystocia, was processed under good manufacturing processing to produce mechanically manipulated, unexpanded pulp tissue particles containing viable cells surrounded in extracellular matrix...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28344945/an-evaluation-of-the-possible-relationship-between-chronic-periodontitis-and-hypertension
#13
M O Arowojolu, O Oladapo, O I Opeodu, S O Nwhator
BACKGROUND: Periodontal diseases have been reported to have a form of reciprocal relationship with the general systemic health, in which case those with some systemic diseases such as hypertension have poorer periodontal health and vice versa. The issue of causal or casual relationship is however yet to be finally resolved. AIM: The aim of this study was to determine any possible relationship between chronic periodontitis and cardiovascular risk factors. METHODOLOGY: A cross-sectional assessment of cardiovascular risk factors such as blood pressure, body mass index, waist circumference and the carotid artery intima media thickness (CIMT) was done among 100 consecutive subjects in the echocardiogram unit of the University College Hospital, Ibadan, Nigeria over a period of six months...
April 2016: Journal of the West African College of Surgeons
https://www.readbyqxmd.com/read/28344856/effects-of-a-novel-dental-gel-on-enamel-surface-recovery-from-acid-challenge
#14
Tracie Lam, Jessica Ho, Afarin Golabgir Anbarani, Lih-Huei Liaw, Thair Takesh, Petra Wilder-Smith
BACKGROUND: Objective was to evaluate the in vivo effects of a novel dental gel (Livionex gel(R)) vs. a comparison dental gel on the surfaces of pre-eroded enamel chips. METHODS: On days 1-5, after toothbrushing with dentifrice, nine subjects each wore 8 enamel chips mounted on a palatal appliance for 4 h. Enamel blocks were pre-demineralized daily. After 2 day washout, subjects repeated the protocol using fresh chips and the second toothpaste on days 8-12. Samples were evaluated using electron microscopy...
October 2016: Dentistry: Current Research
https://www.readbyqxmd.com/read/28344835/a-review-of-mercury-exposure-and-health-of-dental-personnel
#15
REVIEW
Natasha Nagpal, Silvana S Bettiol, Amy Isham, Ha Hoang, Leonard A Crocombe
Considerable effort has been made to address the issue of occupational health and environmental exposure to mercury. This review reports on the current literature of mercury exposure and health impacts on dental personnel. Citations were searched using four comprehensive electronic databases for articles published between 2002 and 2015. All original articles that evaluated an association between the use of dental amalgam and occupational mercury exposure in dental personnel were included. Fifteen publications from nine different countries met the selection criteria...
March 2017: Safety and Health At Work
https://www.readbyqxmd.com/read/28344574/health-associated-niche-inhabitants-as-oral-probiotics-the-case-of-streptococcus-dentisani
#16
Arantxa López-López, Anny Camelo-Castillo, María D Ferrer, Áurea Simon-Soro, Alex Mira
Oral diseases, including dental caries and periodontitis, are among the most prevalent diseases worldwide and develop as a consequence of a microbial dysbiosis. Several bacterial strains are being tested as potential oral health-promoting organisms, but usually they are species isolated from niches other than the site where they must exert its probiotic action, typically from fecal samples. We hypothesize that oral inhabitants associated to health conditions will be more effective than traditional, gut-associated probiotic species in key aspects such as colonization of the oral site where disease takes place or the possession of oral health promoting functions, as well as more practical issues like safety and toxicity, and establishing proper doses for administration...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28343932/fracture-incidence-of-waveone-and-reciproc-files-during-root-canal-preparation-of-up-to-3-posterior-teeth-a-prospective-clinical-study
#17
Clóvis Stephano Pereira Bueno, Daniel Pinto de Oliveira, Rina Andrea Pelegrine, Carlos Eduardo Fontana, Daniel Guimarães Pedro Rocha, Carlos Eduardo da Silveira Bueno
INTRODUCTION: Reciprocating instruments were developed to improve and simplify the preparation of the root canal system by allowing greater centralization of the canal and requiring a shorter learning curve. Despite the risk of instrument separation, using a reciprocating instrument in more than 1 case is a relatively common clinical practice. The aim of this study was to evaluate the fracture resistance of Reciproc (R25; VDW, Munich, Germany) and WaveOne (Primary; Dentsply Maillefer, Ballaigues, Switzerland) instruments according to the number of uses during the preparation of root canals in up to 3 posterior teeth...
March 23, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28343926/cobalt-chloride-enhances-the-stemness-of-human-dental-pulp-cells
#18
Kantaporn Laksana, Sireerat Sooampon, Prasit Pavasant, Wannakorn Sriarj
INTRODUCTION: Hypoxia is a factor in controlling stem cell stemness. We investigated if cobalt chloride (CoCl2), a chemical agent that mimics hypoxia in vitro, affected human dental pulp cell (hDPC) stemness by examining cell proliferation, stem cell marker expression, and osteogenic differentiation. METHODS: hDPCs were cultured with or without 25 or 50 μmol/L CoCl2. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was used to determine cell proliferation...
March 23, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28343678/maxillofacial-prosthetics-training-and-practice-profiles-in-the-united-states
#19
James L Sheets, Judy Chia-Chun Yuan, Cortino Sukotjo, Betsy K Davis, Alvin G Wee
STATEMENT OF PROBLEM: The motivation of maxillofacial prosthodontists to go into fellowship training and specific procedures in maxillofacial prosthetics practice once they have completed training has not been previously evaluated. PURPOSE: The purpose of this study was to survey maxillofacial prosthodontists in the United States to investigate their reasons for pursuing maxillofacial prosthetic training and their practice profiles. MATERIAL AND METHODS: In June 2015, a survey was sent to all US maxillofacial prosthodontists asking for descriptive demographics, their reasoning as to what prompted entrance into a maxillofacial prosthetic program, and their practice pattern...
March 23, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28343674/two-stage-implant-placement-technique-for-the-management-of-irradiated-jaws-an-animal-study
#20
Moustafa N Aboushelib, Mohamed A Arnaout, Mohamed H Elsafi, Youssef M Kassem
STATEMENT OF PROBLEM: Radiotherapy results in diminished bone remodeling capacity and an elevated risk of osteoradionecrosis, which can negatively influence the survival rate of dental implants. Patients receiving radiotherapy are advised not to receive dental implants during or soon after completing their radiotherapy. PURPOSE: The purpose of this animal study was to investigate a 2-stage implant placement technique designed to diminish applied trauma on irradiated bone...
March 23, 2017: Journal of Prosthetic Dentistry
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