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https://www.readbyqxmd.com/read/29334282/evaluation-of-dentin-permeability-of-fluorotic-permanent-teeth
#1
K Görkem Ulu Güzel, Münciye Semra Özay Ertürk, Zuhal Kırzıoğlu, Suat Özkorucuklu
OBJECTIVE: The in vitro permeability characteristics of dentin have been studied extensively and used to evaluate the efficacy of various preventative and restorative procedures. The aim of this in vitro study was to precisely determine the dentin permeability of fluorotic premolar teeth using an electronic hydraulic conductance measurement system with photosensors and to compare the data with healthy premolars. METHODS: In total, 40 fluorotic and healthy premolar teeth with complete root formation that were extracted for orthodontic purposes and had no caries, restoration, fractures, or cracks were selected for this study...
January 15, 2018: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/29334137/calcium-phosphate-precipitation-in-experimental-gaps-between-fluoride-containing-fast-setting-calcium-silicate-cement-and-dentin
#2
Bahram Ranjkesh, Ming Ding, Michel Dalstra, Jens R Nyengaard, Jacques Chevallier, Flemming Isidor, Henrik Løvschall
A novel fast-setting calcium silicate cement containing fluoride (novel-CSC) has been developed for applications in tooth crowns. The aim of this study was to assess the ability of the novel-CSC to close the experimental gaps at the dentin-cement interface. The novel-CSC was tested against Vitrebond and GC Fuji II LC. Experimental gaps of 50 or 300 μm width were created between the materials and dentin. Specimens with the 300-μm-wide gap were immersed in phosphate-buffered saline and the closed gap area was measured during 96 h...
January 15, 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29331299/the-regulatory-roles-of-notch-in-osteocyte-differentiation-via-the-crosstalk-with-canonical-wnt-pathways-during-the-transition-of-osteoblasts-to-osteocytes
#3
Jin Shao, Yinghong Zhou, Yin Xiao
Osteocytes comprise more than 90% of the cells in bone and are differentiated from osteoblasts via an unknown mechanism. Recently, it was shown that Notch signaling plays an important role in osteocyte functions. To gain insights into the mechanisms underlying the functions of Notch in regulating the transition of osteoblasts to osteocytes, we performed a luciferase assay by cloning the proximal E11 and dentin matrix acidic phosphoprotein 1 (DMP1) promotor regions into pGluc-Basic 2 vectors, which were subsequently transfected into the IDG-SW3 (osteocytes), MC3T3 (osteoblasts) and 293T (non-osteoblastic cells) cell lines...
January 10, 2018: Bone
https://www.readbyqxmd.com/read/29330840/clinical-assessment-of-class-ii-resin-based-composites-versus-preformed-metal-crowns-performed-on-primary-molars-in-patients-at-high-risk-of-caries
#4
A Alyahya, A Khanum, M Qudeimat
AIM: To compare class II resin composite with preformed metal crowns (PMC) in the treatment of proximal dentinal caries in high caries-risk patients. METHODS: The charts (270) of paediatric patients with proximal caries of their primary molars were reviewed. Success or failure of a procedure was assessed using the dental notes. Survival analysis was used to calculate the mean survival time (MST) for both procedures. The influence of variables on the mean survival time was investigated...
January 12, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29330655/effectiveness-for-dentin-hypersensitivity-treatment-of-non-carious-cervical-lesions-a-meta-analysis
#5
REVIEW
Vittorio Moraschini, Larissa Salina da Costa, Gustavo Oliveira Dos Santos
OBJECTIVE: The aim of this review is to conduct a systematic review and meta-analysis comparing the effectiveness of in-home or in-office treatments for dentin hypersensitivity. MATERIALS AND METHODS: An electronic search without restriction on dates or languages was performed in four electronic databases until March 2017. In addition, hand-searches in regular journals and in the gray literature were also conducted. To develop the search strategy, clinical questions were formulated using the PICOS method...
January 12, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29329566/general-and-erosive-tooth-wear-of-16-year-old-adolescents-in-kuantan-malaysia-prevalence-and-association-with-dental-caries
#6
Noorhazayti Ab Halim, Rashidah Esa, Hooi Pin Chew
BACKGROUND: The objective of this study was to determine the prevalence and severity of general tooth wear (GTW), i.e. tooth wear irrespective of etiology and erosive tooth wear (ETW), i.e. tooth wear predominantly due to erosion; and also to investigate the relationship between ETW and dental caries experience in 16-year-old adolescents in Kuantan, Malaysia. METHODS: A multi-staged cluster sampling method was employed. A total of 598 16-year-old adolescents participated in this study...
January 12, 2018: BMC Oral Health
https://www.readbyqxmd.com/read/29327470/investigation-of-the-effect-of-rapid-and-slow-external-ph-increases-on-enterococcus-faecalis-biofilm-grown-on-dentine
#7
Mark Stenhouse, Peter Zilm, Jithendra Ratnayake, Peter Cathro
BACKGROUND: Calcium hydroxide is a common endodontic medicament and has an anti-microbial effect by increasing the localized pH within the root canal. However, Enterococcus faecalis has shown some resistance to calcium hydroxide. METHOD: A flow cell apparatus was used to grow an E. faecalis biofilm on dentine discs. Following 4 weeks growth in Todd Hewitt Broth, flow cells were exposed to either a rapid or slow increase to pH 11.5 or 12.5. Cellular viability was determined using serial plating and the number of colony forming units was normalised against the cellular protein content...
January 11, 2018: Australian Dental Journal
https://www.readbyqxmd.com/read/29326515/scanning-electron-microscopic-evaluation-of-efficacy-of-17-ethylenediaminetetraacetic-acid-and-chitosan-for-smear-layer-removal-with-ultrasonics-an-in-vitro-study
#8
Aradhana Babu Kamble, Sathish Abraham, Deepak Dadarao Kakde, C Shashidhar, Disha Lalit Mehta
Introduction: The main aim of root canal treatment is cleaning, shaping and then obturating three dimensionally to prevent reinfection. This includes chemicomechanical cleansing by instrumentation and the use of irrigating solutions. Therefore, the purpose of this study was to compare the smear layer removal from root canal dentine subjected to two root canal irrigants, 17% EDTA and 0.2% Chitosan, a new irrigant using Scanning Electron Microscope. Methodology: 40 single rooted premolars were decoronated followed by instrumentation with I Race files and intermediate irrigation with 3% sodium hypochlorite and activation with ultrasonics...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29326513/an-in-vitro-comparison-of-pushout-bond-strength-of-resilon-with-metaseal-and-ah-plus-sealers
#9
Priyanka Sarangi, Rashmirekha Mallick, Sukanta Kumar Satapathy, Gaurav Sharma, Fathima Kouser, Satyajit Mohapatra
Aim: The aim of this study is to evaluate and compare the pushout bond strengths of Resilon with two different sealers: Resilon/MetaSEAL (methacrylate based) and Resilon/AH Plus (an epoxy resin-based sealer). Materials and Methods: Forty single canal anterior teeth were decoronated at cementoenamel junction and standardized to 10 ± 1 mm length. Working length was determined followed by biomechanical preparation. Then, the specimens were randomly assigned into two groups of 20 teeth each based on the sealer used with Resilon...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29326512/evaluating-the-effect-of-different-conditioning-agents-on-the-shear-bond-strength-of-resin-modified-glass-ionomers
#10
Namith Rai, Rajaram Naik, Ravi Gupta, Shobana Shetty, Amith Singh
Aim of the Study: This study aims to evaluate the effects three different conditioning agents on the shear bond strength of resin-modified glass ionomers to human dentin. Materials and Methods: One hundred and twenty recently extracted, caries-free premolars and molars will be cleaned of debris and disinfected in a 0.5% solution of sodium hypochlorite and sterile water for 30 min. The occlusal surface of each tooth will be reduced using conventional model trimmer with water to produce the dentin surface...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29326505/influence-of-intracanal-irrigants-on-coronal-fracture-resistance-of-endodontically-treated-and-bleached-teeth-an-in-vitro-study
#11
Maryam Khoroushi, Fatemeh Tavakol, Farinaz Shirban, Sanaz Ziaei
Background: Irrigation has a key role in the success of endodontic treatment. Intracanal irrigant solutions have adverse effects on the physical properties of dentin. Aim: The present study aimed to evaluate the effect of different irrigation protocols on coronal fracture resistance of endodontically treated teeth undergoing bleaching treatment. Design and Materials and Methods: Access cavities were prepared in 120 maxillary premolars which were divided into two groups (n = 60) - Group A: nonbleached, Group B: bleached (B)...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29326447/conference-report-dentinal-tubules-inaugural-congress-2017
#12
Clifton Wan, Frances O'Leary
No abstract text is available yet for this article.
January 12, 2018: British Dental Journal
https://www.readbyqxmd.com/read/29324076/brain-functional-changes-before-during-and-after-clinical-pain
#13
X Hu, A J Racek, E Bellile, T D Nascimento, M C Bender, R L Toback, D Burnett, L Khatib, R McMahan, I Kovelman, R P Ellwood, A F DaSilva
This study used an emerging brain imaging technique, functional near-infrared spectroscopy (fNIRS), to investigate functional brain activation and connectivity that modulates sometimes traumatic pain experience in a clinical setting. Hemodynamic responses were recorded at bilateral somatosensory (S1) and prefrontal cortices (PFCs) from 12 patients with dentin hypersensitivity in a dental chair before, during, and after clinical pain. Clinical dental pain was triggered with 20 consecutive descending cold stimulations (32° to 0°C) to the affected teeth...
January 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29323776/remineralization-of-natural-human-carious-dentin-lesions-with-an-experimental-whisker-reinforced-atraumatic-restorative-treatment-composite
#14
Chao Zhang, Stephen D Campbell, Sabine H Dickens, Bin Yang
PURPOSE: To evaluate the remineralization of natural human dentin caries with an experimental whisker-reinforced Atraumatic Restorative Treatment (ART) composite. MATERIALS AND METHODS: Teeth with moderate active dentin caries were prepared with caries-disclosing dye and hand instruments, restored with ART or resin-modified glass ionomer cement (RM-GIC), and then wet sliced into 120-μm sections with 15 sections in each group. After taking transverse microradiographs and implementing digital image analysis to determine the "mineral-loss-before," each section was incubated in artificial saliva solution (pH = 7...
January 11, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29322499/effect-of-body-weight-and-behavioural-factors-on-caries-severity-in-mexican-rural-and-urban-adolescents
#15
Cynthia Lara-Capi, Maria Grazia Cagetti, Fabio Cocco, Peter Lingström, Franklin García-Godoy, Guglielmo Campus
OBJECTIVES: To investigate if, in Mexican adolescents, body weight and caries severity are associated, and if this association differs between rural and urban populations. METHODS: Adolescents from the rural area of Tepancan and the city of Veracruz were enrolled. Caries was recorded using the International Caries Detection and Assessment System and the body mass index (BMI) was calculated. Oral habits (toothbrushing, flossing, dental check-ups) and dietary patterns (sweets intake) were assessed...
January 11, 2018: International Dental Journal
https://www.readbyqxmd.com/read/29321271/incremental-distribution-of-strontium-and-zinc-in-great-ape-and-fossil-hominin-cementum-using-synchrotron-x-ray-fluorescence-mapping
#16
Christopher Dean, Adeline Le Cabec, Kathryn Spiers, Yi Zhang, Jan Garrevoet
Cementum and the incremental markings it contains have been widely studied as a means of ageing animals and retrieving information about diet and nutrition. The distribution of trace elements in great ape and fossil hominin cementum has not been studied previously. Synchrotron X-ray fluorescence (SXRF) enables rapid scanning of large tissue areas with high resolution of elemental distributions. First, we used SXRF to map calcium, phosphorus, strontium and zinc distributions in great ape dentine and cementum...
January 2018: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29320372/a-dentin-derived-hydrogel-bioink-for-3d-bioprinting-of-cell-laden-scaffolds-for-regenerative-dentistry
#17
Avathamsa Athirasala, Anthony Tahayeri, Greeshma Thrivikraman, Cristiane M França, Nelson Monteiro, Victor Tran, Jack Ferracane, Luiz E Bertassoni
Recent studies in tissue engineering have adopted extracellular matrix (ECM) derived scaffolds as natural and cytocompatible microenvironments for tissue regeneration. The dentin matrix, specifically, has been shown to be associated with a host of soluble and insoluble signaling molecules that can promote odontogenesis. Here, we have developed a novel bioink, blending printable alginate (3% w/v) hydrogels with the soluble and insoluble fractions of the dentin matrix. We have optimized the printing parameters and the concentrations of the individual components of the bioink for print accuracy, cell viability and odontogenic potential...
January 10, 2018: Biofabrication
https://www.readbyqxmd.com/read/29318781/phosphonate-functionalized-poly-%C3%AE-amino-ester-macromers-as-potential-biomaterials
#18
Ece Akyol, Mirac Tatliyuz, Fatma Demir Duman, Melek Naz Guven, Havva Yagci Acar, Duygu Avci
Biodegradability, hemocompatibility, resistance to protein adsorption, and strong interactions with hydroxyapatite (HAP)-based tissues such as dentin, enamel, and bone are important properties of phosphorus-containing biomaterials. Here, novel phosphonate-functionalized poly(β-amino ester) (PBAE) macromers are synthesized through aza-Michael addition of various diacrylates [1,6-hexanediol diacrylate (HDDA), poly(ethylene glycol) diacrylate (PEGDA, Mn =575), 1,4-butanediol diacrylate (BDDA), 1,6-hexanediol ethoxylate diacrylate (HDEDA) and triethylene glycol diacrylate (TEGDA)] and a phosphonate-containing primary amine (diethyl 2-aminoethylphosphonate, A1) efficiently without any catalyst; where replacement of A1 with propyl amine (PA) served as control...
January 10, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29318387/antimicrobial-activity-of-psidium-cattleianum-associated-with-calcium-hydroxide-against-enterococcus-faecalis-and-candida-albicans-an-in-vitro-study
#19
Jorgiana Sangalli, Elerson Gaetti Jardim Júnior, Carlos Roberto Emerenciano Bueno, Rogério Castilho Jacinto, Gustavo Sivieri-Araújo, João Eduardo Gomes Filho, Luciano Tavares Ângelo Cintra, Eloi Dezan Junior
OBJECTIVE: Evaluate, in vitro, the antimicrobial activity of Psidium cattleianum leaf extracts combined with calcium hydroxide against Enterococcus faecalis and Candida albicans biofilm. MATERIALS AND METHODS: Dentin specimens obtained from extracted bovine incisors were infected during 14 days with E. faecalis ATCC 29212 and C. albicans ATCC 10231. The specimens were filled with calcium hydroxide pastes prepared with the following vehicles: Psidium cattleianum ethanolic, Psidium cattleianum propylene glycolic, distilled water, and saline as control...
January 9, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29316874/liposomal-delivery-of-demineralised-dentine-matrix-for-dental-tissue-regeneration
#20
Genevieve Elizabeth Melling, John Colombo, Steven J Avery, Wayne Ayre, Samuel L Evans, Rachel Jane Waddington, Alastair James Sloan
Current dental restorations have short longevity, consequently there is a need for novel tissue engineering strategies that aim to regenerate the dentine-pulp complex. Dentine matrix contains a myriad of bioactive growth factors and extracellular matrix proteins associated with the recruitment, proliferation and differentiation of dental pulp progenitor cells. Here, we show that demineralised dentine matrix (DDM), from non-carious dentine, can be encapsulated into liposomes for delivery to dental tissue to promote regeneration...
January 9, 2018: Tissue Engineering. Part A
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