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Calcium Hydroxide

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https://www.readbyqxmd.com/read/28076462/effect-of-ultrasonic-streaming-on-intra-dentinal-disinfection-and-penetration-of-calcium-hydroxide-paste-in-endodontic-treatment
#1
Marcela Paola Castro Arias, Amanda Garcia Alves Maliza, Raquel Zanin Midena, Márcia Sirlene Zardin Graeff, Marco Antonio Húngaro Duarte, Flaviana Bombarda de Andrade
Objective: The antimicrobial effect of ultrasonic agitation of calcium hydroxide (CH) pastes in infected bovine dentin and their penetrability were evaluated using confocal laser scanning microscopy (CLSM) and microbiological culture. Material and Methods: Fifty-two bovine teeth were infected with Enterococcus faecalis using a new contamination protocol; then they received CH paste and were divided into groups with or without ultrasound. Ultrasonic agitation was conducted for 1 min with a plain point insert...
November 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28076457/removal-of-calcium-hydroxide-from-weine-type-ii-systems-using-photon-induced-photoacoustic-streaming-passive-ultrasonic-and-needle-irrigation-a-microcomputed-tomography-study
#2
Adam Lloyd, Geraldine Navarrete, Melissa Andreia Marchesan, David Clement
Objective: This study compared the effectiveness of Er:YAG laser-activated irrigation (PIPS), passive ultrasonic irrigation (PUI) with EndoUltra and standard needle irrigation (SNI) in the removal of calcium hydroxide [Ca(OH)2] from the mesial roots of Weine Type II mandibular molars. Material and Methods: Thirty mandibular molars were screened by µCT for the presence of mesial roots with complex intra-canal anatomy and a common apical foramen. The teeth were enlarged to a standardized 25/...
November 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28068104/unraveling-interactions-between-ionic-liquids-and-phospholipid-vesicles-using-nanoplasmonic-sensing
#3
Joanna Witos, Giacomo Russo, Suvi-Katriina Ruokonen, Susanne Kristina Wiedmer
Owing to their unique properties and unlimited structural combinations, the ubiquitous use of ionic liquids (ILs) is steadily increasing. The objective of the present work is to shed light into the effects of amidinium- and phosphonium-based ILs on phospholipid vesicles using a nanoplasmonic sensing measurement technique. A new and relatively simple method was developed for the immobilization of large unilamellar vesicles on two different hydrophilic surfaces composed of titanium dioxide and silicon nitride nanolayers...
January 9, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28050518/revitalization-of-an-immature-permanent-mandibular-molar-with-a-necrotic-pulp-using-platelet-rich-fibrin-a-case-report
#4
Dayalan Subash, Krishnamma Shoba, Shibu Aman, Srinivasan Kumar Indu Bharkavi
Any insult to the pulp during its development causes cessation of dentin formation and root growth. Pulpal status and degree of root development are the decisive factors in the treatment approach. Various treatment options have been tried like surgery with root-end sealing, calcium hydroxide-apexification, placement of apical plug and regenerative endodontic procedures to induce apexogenesis. An ideal scenario for a necrosed tooth with immature root would be continued root development coupled with regeneration of pulp tissue...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28048345/su-d-brc-04-development-of-proton-tissue-equivalent-materials-for-calibration-and-dosimetry-studies
#5
E Olguin, S Flampouri, I Lipnharski, W Bolch
PURPOSE: To develop new proton tissue equivalent materials (PTEM), urethane and fiberglass based, for proton therapy calibration and dosimetry studies. Existing tissue equivalent plastics are applicable only for x-rays because they focus on matching mass attenuation coefficients. This study aims to create new plastics that match mass stopping powers for proton therapy applications instead. METHODS: New PTEMs were constructed using urethane and fiberglass resin materials for soft, fat, bone, and lung tissue...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28040502/a-comparison-between-effect-of-photodynamic-therapy-by-led-and-calcium-hydroxide-therapy-for-root-canal-disinfection-against-enterococcus-faecalis-a-randomized-controlled-trial
#6
Mohammad Asnaashari, Hengameh Ashraf, Afsaneh Rahmati, Neda Amini
BACKGROUND: Insufficient root canal disinfection is one of the main reasons for persistent periapical pathology. Photodynamic therapy (PDT) has been proven effective in disinfecting infected root canals. The aim of this study was to evaluate the antimicrobial effect of photo activated disinfection (PAD) when using toluidine blue as photosensitizer and a LED lamp after the conventional treatment, and comparing it with calcium hydroxide therapy in vivo. METHODS: This clinical trial includes 20 patients with molars requiring endodontic retreatment...
December 28, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28027490/magnesium-alloys-and-graphite-wastes-encapsulated-in-cementitious-materials-reduction-of-galvanic-corrosion-using-alkali-hydroxide-activated-blast-furnace-slag
#7
D Chartier, B Muzeau, L Stefan, J Sanchez-Canet, C Monguillon
Magnesium alloys and graphite from spent nuclear fuel have been stored together in La Hague plant. The packaging of these wastes is under consideration. These wastes could be mixed in a grout composed of industrially available cement (Portland, calcium aluminate…). Within the alkaline pore solution of these matrixes, magnesium alloys are imperfectly protected by a layer of Brucite resulting in a slow corrosion releasing hydrogen. As the production of this gas must be considered for the storage safety, and the quality of wasteform, it is important to select a cement matrix capable of lowering the corrosion kinetics...
December 15, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28009877/effects-of-reduced-dimensionality-on-the-properties-of-magnesium-hydroxide-and-calcium-hydroxide-nanostructures
#8
Soran Jahangiri, Nicholas J Mosey
Metal hydroxides are a class of layered materials that contain two-dimensional metal hydroxide layers that can be isolated to form layered nanostructures. In this work, density functional theory (DFT) and self-consistent-charge density-functional tight-binding (SCC-DFTB) methods have been used to investigate the properties of magnesium hydroxide and calcium hydroxide nanostructures. The properties of single layer and multi layer structures with up to 10 metal hydroxide sheets and nanoparticles containing more than 2000 atoms have been calculated and compared with the bulk properties of these systems...
December 23, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28000038/management-of-pulps-exposed-during-carious-tissue-removal-in-adults-a-multi-national-questionnaire-based-survey
#9
Lina Stangvaltaite, Falk Schwendicke, Christopher Holmgren, Marion Finet, Marisa Maltz, Karim Elhennawy, Eero Kerosuo, Sophie Doméjean
OBJECTIVES: The aim of the present study was to investigate and compare the management of pulps exposed during carious tissue removal by French, German, and Norwegian general dental practitioners (GDPs). We further aimed to assess possible dentist- and patient-related factors associated with these management decisions. MATERIALS AND METHODS: A structured questionnaire was send via mail to a simple random sample of dentists. RESULTS: The analyzed sample consisted of 661 (33%) French GDPs, 622 (25%) German GDPs, and 199 (34%) Norwegian GDPs...
December 20, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27994420/comparative-evaluation-of-platelet-rich-fibrin-mineral-trioxide-aggregate-and-calcium-hydroxide-as-pulpotomy-agents-in-permanent-molars-with-irreversible-pulpitis-a-randomized-controlled-trial
#10
Varun Kumar, Ruchi Juneja, Jigyasa Duhan, Pankaj Sangwan, Sanjay Tewari
BACKGROUND: Pulpotomy has been proposed as an alternative for the management of irreversible pulpitis in permanent molars with closed apices. AIM: To compare the performances of calcium hydroxide (CH), mineral trioxide aggregate (MTA), and platelet-rich fibrin (PRF) as pulpotomy agents in mature permanent molars with irreversible pulpitis. MATERIALS AND METHODS: Fifty-four permanent mandibular molars with carious exposure and symptoms of irreversible pulpitis were randomly allocated to three groups, and full pulpotomy was performed using CH, MTA, or PRF as pulpotomy agents...
October 2016: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/27994411/comparative-evaluation-of-calcium-silicate-based-dentin-substitute-biodentine-%C3%A2-and-calcium-hydroxide-pulpdent-in-the-formation-of-reactive-dentin-bridge-in-regenerative-pulpotomy-of-vital-primary-teeth-triple-blind-randomized-clinical-trial
#11
Navneet Grewal, Rubica Salhan, Nirapjeet Kaur, Hemal Bipin Patel
BACKGROUND: Considering the biological concerns of calcium hydroxide (CH) as a pulpotomy agent, an alternative silicate based dentin substitute i.e. Biodentine (Ca3SiO5) was evaluated clinically and radiographically. AIMS: To evaluate the effectiveness of dentin substitute (Biodentine) in regenerative pulpotomy of vital primary teeth that would giv a biological base to its use in forming reactive dentin bridge and overcoming the drawbacks of calcium hydroxide. MATERIAL AND METHODS: Randomised clinical trial on 40 bilateral carious primary molars in 20 participant children (aged 5-10 years) was carried out by same operator using Ca3SiO5(group-1) and CH (group-2) as vital pulpotomy agents...
October 2016: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/27986375/biological-evaluation-of-a-new-pulp-capping-material-developed-from-portland-cement
#12
Ahmed M Negm, Ehab E Hassanien, Ashraf M Abu-Seida, Mohamed M Nagy
This study evaluates the biological properties of a new pulp capping material developed from Portland cement. This study was conducted on 48 teeth in 4 dogs (12 teeth/dog). The dogs were classified into two equal groups (n=24 teeth) according to the evaluation period including: group A (3 weeks) and group B (3 months). Each group was further subdivided into three equal subgroups (n=8 teeth) according to the capping material including: subgroup 1: mineral trioxide aggregate (MTA), subgroup2: Portland cement+10% calcium hydroxide+20% bismuth oxide (Port Cal) and subgroup 3: Portland cement+bismuth oxide...
December 13, 2016: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/27982236/limewater-and-polymyxin-b-associated-with-naocl-for-endotoxin-detoxification-in-root-canal-with-necrotic-pulp
#13
Alessandra Sverberi Carvalho, Luciane Dias de Oliveira, Flávia Goulart da Rosa Cardoso, Felipe Eduardo de Oliveira, Marcia Carneiro Valera, Cláudio Antônio Talge Carvalho
This clinical study investigated the effects of endodontic treatment by using different irrigants (limewater + NaOCl and polymyxin B + NaOCl) and intracanal medication on endotoxins in teeth with primary endodontic infection and radiographically visible apical periodontitis. Thirty-three teeth with necrotic pulp and periapical lesions from different patients were selected for this study. Samples were collected after the coronal opening (S1) and after instrumentation (S2). Root canals were divided in 3 groups (n = 11) according to the irrigant combination used: NaOCl + LW: 2...
September 2016: Brazilian Dental Journal
https://www.readbyqxmd.com/read/27977829/effect-of-lining-materials-on-shear-bond-strength-for-composite-restorations-in-vitro
#14
Taciana Marco Caneppele, Eduardo Bresciani, Daniele Mara Da Silva Ávila, Daphne Camara Barcellos, Cesar Rogério Pucci
This study evaluated the influence of liner agents placed under resin composite restorations on shear bond strength (SBS) to dentin. A total of 40 extracted bovine incisors were used. Enamel surfaces were ground to expose a flat dentin area of 7 mm in diameter. Teeth were divided into four groups according to tested liners: Group 1 (control) used no liner; Group 2 used a resin-modified glass-ionomer cement liner (Vitrebond Plus, 3M ESPE); Group 3 used a light-activated calcium hydroxide resin liner (Ultra-Blend Plus, Ultradent); and Group 4 used a polyacrylic acid surface treatment + conventional glass-ionomer cement liner (Vidrion F, SSWhite)...
January 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/27966930/encapsulation-of-pancreatic-lipase-in-hydrogel-beads-with-self-regulating-internal-ph-microenvironments-retention-of-lipase-activity-after-exposure-to-gastric-conditions
#15
Zipei Zhang, Fang Chen, Ruojie Zhang, Zeyuan Deng, David Julian McClements
Oral delivery of lipase is important for individuals with exocrine pancreatic insufficiency; however, lipase loses activity when exposed to the highly acidic gastric environment. In this study, pancreatic lipase was encapsulated in hydrogel beads fabricated from alginate (gel former), calcium chloride (cross-linker), and magnesium hydroxide (buffer). Fluorescence confocal microscopy imaging was used to map the pH microclimate within the hydrogel beads under simulated gastrointestinal tract (GIT) conditions...
December 28, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27939738/effect-of-the-association-of-nonsteroidal-anti-inflammatory-and-antibiotic-drugs-on-antibiofilm-activity-and-ph-of-calcium-hydroxide-pastes
#16
Rafaela Pignatti de Freitas, Vanessa Raquel Greatti, Murilo Priori Alcalde, Bruno Cavalini Cavenago, Rodrigo Ricci Vivan, Marco Antonio Hungaro Duarte, Ana Carolina Villas Bôas Weckwerth, Paulo Henrique Weckwerth
INTRODUCTION: The objective of the present study was to evaluate the in vitro antibiofilm activity and pH of calcium hydroxide associated with different nonsteroidal anti-inflammatory drugs (NSAIDs). METHODS: The groups analyzed were as follows: group 1, calcium hydroxide paste with propylene glycol; group 2, calcium hydroxide paste with propylene glycol + 5% diclofenac sodium; group 3, calcium hydroxide paste with propylene glycol + 5% ibuprofen; group 4, calcium hydroxide paste with propylene glycol + 5% ciprofloxacin; and group 6, positive control (without medication)...
January 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/27939736/efficacy-of-xp-endo-finisher-file-in-removing-calcium-hydroxide-from-simulated-internal-resorption-cavity
#17
Cangül Keskin, Evren Sariyilmaz, Öznur Sariyilmaz
INTRODUCTION: The aim of this study was to evaluate the effect of supplementary use of XP-endo Finisher file, passive ultrasonic activation (PUI), EndoActivator (EA), and CanalBrush (CB) on the removal of calcium hydroxide (CH) paste from simulated internal resorption cavities. METHODS: The root canals of 110 extracted single-rooted teeth with straight canals were prepared up to size 50. The specimens were split longitudinally, and standardized internal resorption cavities were prepared with burs...
January 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/27928102/cytotoxicity-and-biocompatibility-of-resin-free-and-resin-modified-direct-pulp-capping-materials-a-state-of-the-art-review
#18
Liang Chen, Byoung In Suh
Direct pulp capping is the placement of a dental material directly over exposed pulp to prevent dental pulp from dying and avoid the need for root canal treatments. Calcium hydroxide and calcium silicates/mineral trioxide aggregates (MTA) have been commonly used for direct pulp capping with great success clinically. In recent years, resin-modified calcium hydroxide and calcium silicates have been developed with the advantages of precise placement, command set, and superior physical strength. As pulp capping materials would be in direct contact with the pulp, the cytotoxicity and biocompatibility is of particular importance in order to avoid pulp irritation and maintain pulp vitality...
December 6, 2016: Dental Materials Journal
https://www.readbyqxmd.com/read/27912821/clinical-and-molecular-perspectives-of-reparative-dentin-formation-lessons-learned-from-pulp-capping-materials-and-the-emerging-roles-of-calcium
#19
REVIEW
Minju Song, Bo Yu, Sol Kim, Marc Hayashi, Colby Smith, Suhjin Sohn, Euiseong Kim, James Lim, Richard G Stevenson, Reuben H Kim
The long-term use of calcium hydroxide and the recent increase in the use of hydraulic calcium-silicate cements as direct pulp-capping materials provide important clues in terms of how reparative dentin may be induced to form a "biological seal" to protect the underlying pulp tissues. In this review article, we discuss clinical and molecular perspectives of reparative dentin formation based on evidence learned from the use of these pulp-capping materials. We also discuss the emerging role of calcium as an odontoinductive component in these pulp-capping materials...
January 2017: Dental Clinics of North America
https://www.readbyqxmd.com/read/27900407/do-inhibitors-of-crystallisation-play-any-role-in-the-prevention-of-kidney-stones-a-critique
#20
REVIEW
William G Robertson
A critical examination of data in the literature and in as yet unpublished laboratory records on the possible role of so-called inhibitors of crystallisation in preventing the formation of calcium-containing kidney stones leads to the following conclusions. So-called inhibitors of spontaneous "self-nucleation" are unlikely to play any role in the initiation of the crystallisation of CaOx or CaP in urine because excessive urinary supersaturation of urine with respect to these salts dominates the onset of "self-nucleation" within the normal time frame of the transit of tubular fluid through the nephron (3-4 min)...
November 29, 2016: Urolithiasis
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