keyword
MENU ▼
Read by QxMD icon Read
search

Molars

keyword
https://www.readbyqxmd.com/read/29458136/changes-in-anatomic-position-of-root-canal-orifices-in-pluriradicular-teeth-following-re-location-during-endodontic-treatment
#1
Darian Rusu, Petra Surlin, Stratul Stefan-Ioan, Marius Boariu, Calniceanu Horia, Adrian Kasaj, Cosmin Sinescu, Didilescu Andreea
Direct access to the root canals in posterior teeth for endodontic treatment is most frequently facilitated by the straightening of the coronal parts of the root canals, having as a consequence the relocation of the canal orifices on the map of the floor of the pulp chamber (Christie & Thompson, 1994). This procedure intentionally moves the coronal aspect of a canal away from the center of the chamber, while simultaneously removing internal dentin from the pulp chamber walls. The aim of this study was to evaluate the displacement resulting from the relocation of root canal orifices during the initial phase of rotary root canal treatment in molars using the dental operating microscope (DOM) and digital image processing...
February 16, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29458078/isolation-of-intact-rna-from-murine-cd4-t-cells-after-intracellular-cytokine-staining-and-fluorescence-activated-cell-sorting
#2
Shajo Kunnath-Velayudhan, Steven A Porcelli
Intracellular cytokine staining (ICS) is a powerful method for identifying functionally distinct lymphocyte subsets, and for isolating these by fluorescence activated cell sorting (FACS). Although transcriptomic analysis of cells sorted on the basis of ICS has many potential applications, this is rarely performed because of the difficulty in isolating intact RNA from cells processed using standard fixation and permeabilization buffers for ICS. To address this issue, we compared three buffers shown previously to preserve RNA in nonhematopoietic cells subjected to intracellular staining for their effects on RNA isolated from T lymphocytes processed for ICS...
February 17, 2018: Journal of Immunological Methods
https://www.readbyqxmd.com/read/29457978/size-dependent-thermodynamics-and-kinetics-of-adsorption-on-nanoparticles-a-theoretical-and-experimental-study
#3
Zixiang Cui, Juan Zhang, Yongqiang Xue, Huijuan Duan
Owing to their excellent adsorption properties compared with those of the corresponding bulk materials, nanoparticles have been widely applied in many fields. Their properties depend on the thermodynamics and kinetics of adsorption, which depend on the particle size. In this paper, we present universal theories of the thermodynamics and kinetics for nano-adsorption that have been developed over the past few years. Theoretically, we have derived relationships between the adsorption thermodynamic properties and the particle size, as well as those between the adsorption kinetic parameters and the particle size...
February 19, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29457903/the-excited-state-proton-transfer-in-3-cyano-7-azaindole-from-aqueous-solution-to-ice
#4
Ting-Husn Tu, Yi-Ting Chen, Jiun-Yi Shen, Ta-Chun Lin, Pi-Tai Chou
In this study, we investigated the excited-state proton transfer (ESPT) reaction for 3-cyano-7-azaindole (3CAI) in aqueous solution and in ice. 3CAI undergoes water catalyzed ESPT in the aqueous solution, giving normal (355 nm) and proton transfer tautomer (~472 nm) emission bands. Detailed temperature dependent studies showed that the values of activation free energy (△G≠) were similar between N-H and N-D isotope. Therefore, water catalyzed ESPT involves a stepwise mechanism incorporating solvation equilibrium (Keq) to form a 1:1 (molar ratio) water: 3CAI cyclic hydrogen bonded complex as an intermediate, followed by perhaps proton tunneling reaction...
February 19, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29457192/influence-of-orthodontic-appliance-derived-artifacts-on-3-t-mri-movies
#5
Erika Ozawa, Ei-Ichi Honda, Kulthida Nunthayanon Parakonthun, Hiroko Ohmori, Kazuo Shimazaki, Tohru Kurabayashi, Takashi Ono
BACKGROUND: Magnetic resonance imaging (MRI) has been used to study configurations of speech organs in the resting state. However, MRI is sensitive to metals, and numerous types of metallic appliances, most of which have a large magnetic susceptibility, are used in orthodontic treatment and may cause severe artifacts on MRI. We have developed techniques for obtaining MRI movies of the oral region, to evaluate articulatory changes, especially movement of the tongue, palate, and teeth, pre- and post-orthodontic/orthognathic treatment...
February 19, 2018: Progress in Orthodontics
https://www.readbyqxmd.com/read/29457156/effect-of-calcium-hydroxide-on-bonding-performance-of-an-experimental-self-etch-adhesive
#6
Marcelle Gonçalves Garcia, Laiza Tatiana Poskus, Viviane Hass, Cristiane Mariote Amaral, Jaime Dutra Noronha-Filho, Eduardo Moreira da Silva
PURPOSE: To investigate the effect of Ca(OH)2 concentration on pH neutralization, degree of conversion (DC%), and bonding performance of experimental self-etch adhesives (SEAs). MATERIALS AND METHODS: Four different concentrations of Ca(OH)2 (0 wt%, 1 wt%, 2 wt%, and 4 wt%) were added to the bond of an experimental two-step SEA consisting of primer (10-MDP [30 wt%], TEG-DMA [30 wt%], ethanol [35 wt%], water [5 wt%], camphorquinone [0.5 wt%], and tertiary amine [0...
February 16, 2018: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/29456893/the-effect-of-supragingival-glycine-air-polishing-on-periodontitis-during-maintenance-therapy-a-randomized-controlled-trial
#7
Hongye Lu, Lu He, Yibing Zhao, Huanxin Meng
Background: Glycine air polishing has been proved to be safe, comfortable and time-saving. Whether it could substitute ultrasonic scaling to remove dental plaque biofilm during periodontal maintenance remains unclear. The purposes of this study were to evaluate the effect of supragingival glycine air polishing (SGAP) on the subgingival periodontal pathogens during maintenance therapy and to check the association of periodontal pathogens and clinical parameters. Methods: Twenty-three chronic periodontitis patients during their maintenance therapy were enrolled in the 12-week study...
2018: PeerJ
https://www.readbyqxmd.com/read/29456772/multidimensional-analysis-of-curved-root-canal-preparation-using-continuous-or-reciprocating-nickel-titanium-instruments
#8
Iussif Mamede-Neto, Álvaro Henrique Borges, Ana Helena Gonçalves Alencar, Marco Antonio Hungaro Duarte, Manoel Damião Sousa Neto, Carlos Estrela
Objective: To evaluate transportation (T) and centering ability (CA) of root canal preparations using continuous or reciprocating nickel-titanium endodontic files. Materials and Methods: Ninety-six mesiobuccal root canals of mandibular first and second molars were randomly divided into 6 groups (n=16) according to the rotary file used: 1. ProTaper Next; 2. ProTaper Gold; 3. Mtwo; 4. BioRaCe; 5. WaveOne Gold; 6. Reciproc. Root canals were prepared according to manufacturer's instructions...
2018: Open Dentistry Journal
https://www.readbyqxmd.com/read/29456402/hemisection-as-a-conservative-management-of-grossly-carious-permanent-mandibular-first-molar
#9
Shweta Sharma, Rajat Sharma, Abdul Ahad, Narinder Dev Gupta, Surendra Kumar Mishra
Hemisection of a molar denotes removal or separation of a root along with its accompanying part of crown. It is a suitable treatment option when the caries, resorption, perforation, or periodontal damage is restricted to one root while the other root is relatively healthy. Hemisection of the affected tooth helps to retain the tooth structure, surrounding alveolar bone, and may also facilitate the placement of fixed prosthesis. This case report describes the hemisection as a successful treatment method to save a grossly carious mandibular first molar with periodontal and periapical involvement...
January 2018: Journal of Natural Science, Biology, and Medicine
https://www.readbyqxmd.com/read/29456302/impact-of-mandibular-third-molar-extraction-in-the-second-molar-periodontal-status-a-prospective-study
#10
Paulo Eduardo Melo Stella, Saulo Gabriel Moreira Falci, Lorrayne Estéfane Oliveira de Medeiros, Dhelfeson Willya Douglas-de-Oliveira, Patricia Furtado Gonçalves, Olga Dumont Flecha, Cássio Roberto Rocha Dos Santos
Aim: The aim of the present study was to assess the periodontal condition and sensitivity of second mandibular molars after the extraction of the adjacent third molar, while also assessing the quality of life of the patients. Materials and Methods: Twenty-three healthy patients were assessed in terms of probing depth, gingival height, gingival thickness, dental sensitivity, plaque index and bleeding on probing (adjacent second mandibular molar), before the surgical procedure, as well as 60 and 180 days after the surgery...
July 2017: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/29455974/structural-elucidation-of-a-pectic-polysaccharide-from-fructus-mori-and-its-bioactivity-on-intestinal-bacteria-strains
#11
Saijuan Li, Meixia Li, Han Yue, Lishuang Zhou, Lulin Huang, Zhenyun Du, Kan Ding
Many studies suggested that polysaccharides could impact on the gut microbiota. To discover new polysaccharides which influence intestinal beneficial bacteria, a pectin polysaccharide FMP-6-S2 with an average molecular weight of 86.83 kDa was purified from Fructus Mori. The monosaccharide residue analysis indicated that FMP-6-S2 was composed of rhamnose, galacturonic acid, galactose and arabinose in a molar ratio of 30.86: 24.78: 28.70: 15.61. The backbone of FMP-6-S2 contained 1, 4-linked α-GalpA and 1, 2-linked α-Rhap with branches substituted at C-4 position of rhamnose...
April 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29455973/microbicidal-gentamicin-alginate-hydrogels
#12
Stalin Kondaveeti, Pedro Vinicius de Assis Bueno, Ana Maria Carmona-Ribeiro, Fernanda Esposito, Nilton Lincopan, Maria Rita Sierakowski, Denise Freitas Siqueira Petri
Sodium alginate (Alg) reacted with antibiotic gentamicin sulfate (GS) in an aqueous-phase condition mediated by carbodiimide chemistry, in the molar ratios Alg: GS of (1:0.5), (1:1) and (1:2). The Alg-GS conjugated derivatives were characterized by elemental analysis for nitrogen content, Fourier transform infrared spectroscopy in the attenuated total reflection mode (FTIR-ATR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), thermogravimetric analyses (TGA) and water sorption measurements...
April 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29455934/corrigendum-to-low-molar-excess-of-4-oxo-2-nonenal-and-4-hydroxy-2-nonenal-promote-oligomerization-of-alpha-synuclein-through-different-pathways-free-rad-biol-med-2017-421-431
#13
Leire Almandoz-Gil, Hedvig Welander, Elisabeth Ihse, Payam Emami Khoonsari, Sravani Musunuri, Christofer Lendel, Jessica Sigvardson, Mikael Karlsson, Martin Ingelsson, Kim Kultima, Joakim Bergström
No abstract text is available yet for this article.
February 15, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29455344/lower-third-molar-displaced-to-lateral-pharyngeal-space-after-mandibular-angle-fracture-a-case-report
#14
Rodrigo Dos Santos Pereira, Jonathan Ribeiro da Silva, João Paulo Bonardi, Eduardo Hochuli-Vieira
The removal of displaced dental elements from deep anatomical spaces is a condition that requires the knowledge of the region and skills to perform the procedure. The lateral pharyngeal space contains important structures such as the internal carotid artery and close proximity with the cranium basis. The aim of this paper is to report a clinical case of a lower third molar displaced to the lateral pharyngeal space after a mandibular angle fracture and its treatment by surgical intervention. The tooth was removed under general anesthesia by direct approach and the fracture was reduced and fixed with a plate and screws...
February 18, 2018: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29455020/bayesian-networks-of-age-estimation-and-classification-based-on-dental-evidence-a-study-on-the-third-molar-mineralization
#15
Emanuele Sironi, Vilma Pinchi, Francesco Pradella, Martina Focardi, Silvia Bozza, Franco Taroni
Not only does the Bayesian approach offer a rational and logical environment for evidence evaluation in a forensic framework, but it also allows scientists to coherently deal with uncertainty related to a collection of multiple items of evidence, due to its flexible nature. Such flexibility might come at the expense of elevated computational complexity, which can be handled by using specific probabilistic graphical tools, namely Bayesian networks. In the current work, such probabilistic tools are used for evaluating dental evidence related to the development of third molars...
February 9, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29454891/a-new-procedure-for-processing-extracted-teeth-for-immediate-grafting-in-post-extraction-sockets-an-experimental-study-in-american-fox-hound-dogs
#16
José Luis Calvo Guirado, Pilar Cegarra Del Pino, Lari Sapoznikov, Rafael Arcesio Delgado Ruíz, Manuel Fernández Dominguez, Sérgio Alexandre Gehrke
OBJECTIVES: To investigate freshly extracted dental particulate used to graft post-extraction sockets in dogs, comparing new bone formation at experimental and control sites. MATERIAL AND METHODS: Bilateral premolars P2, P3, P4 and first mandibular molars were extracted atraumatically from six American Fox Hound dogs. The teeth were ground immediately using a 'Smart Dentin Grinder.' The dentin particulate was sieved to ensure a grain size of 300-1200μm and immersed in an alcohol cleanser to dissolve organic debris and bacteria, followed by washing in sterile saline buffer solution...
February 15, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29454253/charge-transfer-complex-between-2-3-diaminopyridine-with-chloranilic-acid-synthesis-characterization-and-dft-td-dft-computational-studies
#17
Khairia M Al-Ahmary, Moustafa M Habeeb, Areej H Al-Obidan
New charge transfer complex (CTC) between the electron donor 2,3-diaminopyridine (DAP) with the electron acceptor chloranilic (CLA) acid has been synthesized and characterized experimentally and theoretically using a variety of physicochemical techniques. The experimental work included the use of elemental analysis, UV-vis, IR and 1 H NMR studies to characterize the complex. Electronic spectra have been carried out in different hydrogen bonded solvents, methanol (MeOH), acetonitrile (AN) and 1:1 mixture from AN-MeOH...
February 10, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29453909/a-headspace-gas-chromatography-method-for-isopropanol-determination-in-warfarin-sodium-products-as-a-measure-of-drug-crystallinity
#18
Ziyaur Rahman, Sohail Akhtar, Akhtar Siddiqui, Anthony B Ciavarella, Agnes Nguyenpho, Patrick J Faustino, Mansoor A Khan
Coumadin® a nd s everal generic products of warfarin s odium (WS) contain the crystalline form (clathrate) in which WS and isopropanol (IPA) are associated in a 2:1 molar ratio. IPA is critical in maintaining the WS crystalline structure. Physicochemical properties of the drug and drug product may change when the crystalline drug transforms to amorphous form. A headspace-gas chromatography (HS-GC) method was developed and validated for IPA determination in the WS drug product. n-propanol (NPA) was used as internal standard and the method was validated for specificity, system suitability, linearity, accuracy, precision, range, limits of detection and quantification, and robustness...
March 1, 2018: Acta Pharmaceutica
https://www.readbyqxmd.com/read/29453788/hard-and-soft-tissue-changes-around-implants-activated-using-plasma-of-argon-a-histomorphometric-study-in-dog
#19
Luigi Canullo, Marco Tallarico, Daniele Botticelli, Karol Alí Apaza Alccayhuaman, Evandro Carneiro Martins Neto, Samuel Porfirio Xavier
OBJECTIVE: To histologically assess the hard and soft tissue changes after insertion of cleaned and activated titanium implants using plasma of argon. MATERIALS AND METHODS: Eight dogs were included in this study. The mandibular premolars and first molars were extracted. For each hemi-mandible, four implants, 7 mm long and 3.3 mm of diameter, with a ZirTi surface were used. The surface of two implants was randomly treated with argon plasma (test), while the other two implants were left untreated (control)...
February 16, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29453721/fenton-treatment-of-bio-treated-fermentation-based-pharmaceutical-wastewater-removal-and-conversion-of-organic-pollutants-as-well-as-estimation-of-operational-costs
#20
Yunqin Cheng, Yunlu Chen, Juncheng Lu, Jianxin Nie, Yan Liu
The Fenton process is used as a tertiary treatment to remove organic pollutants from the effluent of bio-treated pharmaceutical wastewater (EBPW). The optimal and most appropriate Fenton conditions were determined by an orthogonal array test and single-factor experiments. The removal of chemical oxygen demand (COD) was influenced by the following factors in a descending order: H 2 O 2 /Fe(II) molar ratio > H 2 O 2 dosage > reaction time. Under the most appropriate Fenton conditions (H 2 O 2 /Fe(II) molar ratio of 1:1, H 2 O 2 dosage of 120 mg L -1 and reaction time of 10 min), the COD and dissolved organic carbon (DOC) were removed with efficiencies of 62 and 53%, respectively, which met the national discharge standard (GB 21903-2008) for the Lake Tai Basin, China...
February 16, 2018: Environmental Science and Pollution Research International
keyword
keyword
28300
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"