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https://www.readbyqxmd.com/read/28937889/clinical-evaluation-of-ozone-on-dentinal-lesions-in-young-permanent-molars-using-the-stepwise-excavation
#1
Osama Safwat, Mona Elkateb, Karin Dowidar, Omar El Meligy
AIM: To evaluate the clinical changes in dentin of deep carious lesions in young permanent molars, following ozone application with and without the use of a remineralizing solution, using the stepwise excavation. STUDY DESIGN: The sample included 162 first permanent immature molars, showing deep occlusal carious cavities that were indicated for indirect pulp capping. Teeth were divided into 2 main groups according to the method of ozone treatment. Each group was further subdivided equally into test and control subgroups...
September 22, 2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28932310/remineralization-potential-of-three-tooth-pastes-on-enamel-caries
#2
Rajnish K Singhal, Balwant Rai
BACKGROUND: Different formulations of dentifrices exist in the market. Usually, single toothpaste is used by all family members including children. There is a big concern of fluoride ingestion with the toothpaste containing high fluoride content in children. Recently, new toothpaste (including toothpaste) with remineralization potential without fluoride content has been formulated. AIM: There is an urgent need to compare remineralization potential of this new formulation with the exiting dentifrices...
August 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28929203/effects-of-toothpastes-on-white-spot-lesions-around-orthodontic-brackets-using-quantitative-light-induced-fluorescence-qlf-an-in-vitro-study
#3
Gokcenur Gokce, Selcuk Savas, Ebru Kucukyilmaz, Ilknur Veli
AIM: The aim of this study was to investigate the effects of toothpastes with different contents on the remineralization of white spot lesions around orthodontic brackets by quantitative light-induced fluorescence (QLF). MATERIALS AND METHODS: A total of 45 freshly extracted human mandibular first molars were selected. Artificial caries lesions were created on enamel surfaces using an acidified gel system for 7 days. Initial relative fluorescence loss was calculated as the pretreatment (baseline) fluorescence value by QLF device...
September 19, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28918101/silver-diamine-fluoride-remineralized-artificial-incipient-caries-in-permanent-teeth-after-bacterial-ph-cycling-in-vitro
#4
Kulnipa Punyanirun, Thanida Yospiboonwong, Thansinee Kunapinun, Panida Thanyasrisung, Chutima Trairatvorakul
OBJECTIVES: To investigate the remineralizing effect of 38% silver diamine fluoride (SDF) application on enamel artificial caries in adjunct to 1000ppm fluoride toothpaste compared with fluoride toothpaste alone by analyzing the mineral density, depth of remineralization, and remineralization percentage of the lesions. METHODS: Eighteen artificial caries slabs were created from the proximal surfaces of nine chemically demineralized premolars. The slabs were scanned by Micro-Computed Tomography (Micro-CT) to determine the baseline mineral density of the initial lesions and randomly allocated into 2 groups...
September 13, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28914255/microabrasion-remineralization-mab-re-an-innovative-approach-for-dental-fluorosis
#5
Anshula Neeraj Deshpande, Neelam Hasmukhbhi Joshi, Neha Rajesh Pradhan, Rameshwari Yahpal Raol
Enamel microabrasion is a noninvasive method that removes intrinsic and superficial defects from teeth aimed to improve dental esthetic with minimal loss of dental tissue. This case presentation describes the attempt for teeth color correction utilizing that conservative technique in a young girl whose maxillary anterior teeth presented an opaque white/brown stain. Along with microabrasion, an innovative approach of application of casein phosphopeptide-amorphous calcium phosphate crème on the tooth, and remineralization was carried out thereby reducing postoperative sensitivity of the treated tooth...
October 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28914243/an-in-vitro-comparison-of-casein-phosphopeptide-amorphous-calcium-phosphate-paste-casein-phosphopeptide-amorphous-calcium-phosphate-paste-with-fluoride-and-casein-phosphopeptide-amorphous-calcium-phosphate-varnish-on-the-inhibition-of-demineralization-and-promotion
#6
Prachi Jayesh Thakkar, Chandrashekhar M Badakar, Shivayogi M Hugar, Seema Hallikerimath, Punit M Patel, Parin Shah
AIM: This study aims to determine and compare the extent of inhibition of demineralization and promotion of remineralization of permanent molar enamel with and without application of three remineralizing agents. MATERIALS AND METHODS: Forty extracted permanent molars were randomly divided into two groups 1 and 2, longitudinally sectioned into four and divided into subgroups A, B, C, and D. The sections were coated with nail varnish leaving a window of 3 mm × 3 mm...
October 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28902235/trends-in-restorative-composites-research-what-is-in-the-future
#7
Mariel Soeiro Maas, Yvette Alania, Livia Camargo Natale, Marcela Charantola Rodrigues, David Christopher Watts, Roberto Ruggiero Braga
Clinical trials have identified secondary caries and bulk fracture as the main causes for composite restoration failure. As a measure to avoid frequent reinterventions for restoration replacement, composites with some sort of defense mechanism against biofilm formation and demineralization, as well as materials with lower susceptibility to crack propagation are necessary. Also, the restorative procedure with composites are very time-consuming and technically demanding, particularly concerning the application of the adhesive system...
August 28, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28898732/poly-n-isopropylacrylamide-hydroxyapatite-nanocomposites-as-thermoresponsive-filling-materials-on-dentinal-surface-and-tubules
#8
Paolo Tempesti, Giovanni Simone Nicotera, Massimo Bonini, Emiliano Fratini, Piero Baglioni
HYPOTHESIS: Dental decay, asa consequence of exposure to acidic foods and drinks, represents one of the most important tooth pathologies. Recently, enamel and dentinal surface remineralization using hydroxyapatite nano- and microparticles has been proposed; however, commercial remineralizing toothpastes are quite expensive, mostly due to the high costs of hydroxyapatite. Hence, we propose a thermoresponsive hybrid nanocomposite material as filler for tooth defects. The use of thermoresponsive composite particles aims at filling exposed dentinal tubules in response to a change of temperature in the oral cavity...
September 9, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28892645/self-assembling-peptide-p11-4-and-fluoride-for-regenerating-enamel
#9
M Alkilzy, A Tarabaih, R M Santamaria, C H Splieth
Regenerative medicine-based approaches for caries treatment focus on biomimetic remineralization of initial carious lesions as a minimal invasive therapy. In vitro, self-assembling peptide P11-4 enhances remineralization of early carious lesions. To investigate the safety and clinical efficacy of P11-4 for treatment of initial caries, a randomized controlled single-blind study was conducted on children aged >5 y with visible active early caries on erupting permanent molars. Subjects were randomized to either the test group (P11-4 + fluoride varnish) or control group (fluoride varnish alone)...
September 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28886763/bioactive-dental-composites-and-bonding-agents-having-remineralizing-and-antibacterial-characteristics
#10
REVIEW
Ke Zhang, Ning Zhang, Michael D Weir, Mark A Reynolds, Yuxing Bai, Hockin H K Xu
Current dental restorative materials are typically inert and replace missing tooth structures. This article reviews efforts in the development of a new generation of bioactive materials designed to not only replace the missing tooth volume but also possess therapeutic functions. Composites and bonding agents with remineralizing and antibacterial characteristics have shown promise in replacing lost minerals, inhibiting recurrent caries, neutralizing acids, repelling proteins, and suppressing biofilms and acid production...
October 2017: Dental Clinics of North America
https://www.readbyqxmd.com/read/28858285/-local-enamel-demineralization-diagnostics-and-treatment
#11
N E Makarova, Yu A Vinnichenko
The article describes focal enamel demineralization - the most common disease of teeth hard tissues. Local and general factors of this pathological process advent and development were described. The main tools of focal enamel demineralization diagnostics and treatment were observed. The main role of enamel mesoporous structure in the remineralization therapy possibility was underlined. There are still a lot of questions in focal enamel demineralization diagnostics after publications analysis because of the existing methods subjectivity...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28855756/remineralization-ability-of-sodium-fluoride-on-the-microhardness-of-enamel-dentin-and-dentinoenamel-junction-an-in-vitro-study
#12
Elangovan Sivapriya, Krishnamoorthy Sridevi, Ravishankar Periasamy, Lakshmikanthanbharathi Lakshminarayanan, Angambakkam Rajasekaran Pradeepkumar
AIM: Dental tissues such as enamel, dentinoenamel junction (DEJ), dentin, and root dentin can react differently to demineralization and remineralization. The aim of this study was to evaluate the remineralization ability of sodium fluoride on the microhardness of enamel, dentin, and dentinoenamel junction. MATERIALS AND METHODS: Ten extracted third molar teeth were sectioned mesiodistally to form control and test groups. For the test group, initial demineralization was done with acetic acid for 24 h followed by remineralization for 28 days by application of sodium fluoride (226 ppm) for 2 min twice a day...
March 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/28853503/-brushing-abrasion-of-the-enamel-surface-after-erosion
#13
Chen Lipei, Ci Xiangke, Ou Xiaoyan
Objective A study was conducted to compare the effect of different enamel remineralization periods after erosion on the depth of brushing abrasion. Methods Ten volunteers were selected for a 4-day experiment. A total of 60 enamels were randomly assigned into six groups (A-F) and placed in intraoral palatal devices. On the first day, the palatal devices were placed in oral cavity (24 h) . On the following three days, brushing experiments were performed extraorally, two times per day. The specific experimental method of brushing follows these next steps...
August 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28852039/laser-assisted-rapid-mineralization-of-human-tooth-enamel
#14
Muyang Sun, Nier Wu, Haifeng Chen
The human body has difficulty repairing damaged dental enamel, an acellular hard tissue. Researchers have sought feasible biomimicry strategies to repair enamel defects; however, few have been successfully translated to clinical applications. In this study, we propose a new method for achieving rapid enamel mineralization under a near-physiological environment. Through treatment with a laser and chelating agents, 15 μm crystals could be grown compactly on an enamel substrate in less than 20 min. The compact crystal layer had similar structure as native enamel prisms and high elastic modulus...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28843898/role-of-heavy-metals-in-structuring-the-microbial-community-associated-with-particulate-matter-in-a-tropical-estuary
#15
V A Sheeba, Anas Abdulaziz, T R Gireeshkumar, Anirudh Ram, P S Rakesh, C Jasmin, P S Parameswaran
Particulate matter (PM), which are chemically and biochemically complicated particles, accommodate a plethora of microorganisms. In the present study, we report the influence of heavy metal pollution on the abundance and community structure of archaea and bacteria associated with PM samples collected from polluted and non-polluted regions of Cochin Estuary (CE), Southwest coast of India. We observed an accumulation of heavy metals in PM collected from CE, and their concentrations were in the order Fe > Zn > Mn > Cr > Pb > Cu > Cd > Co > Ni...
August 24, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28839410/effect-of-desensitization-using-bioactive-glass-hydroxyapatite-and-diode-laser-on-the-shear-bond-strength-of-resin-composites-measured-at-different-time-intervals-an-in-vitro-study
#16
Timsi Gupta, Shruthi Nagaraja, Sylvia Mathew, Indiresha H Narayana, K S Madhu, K Dinesh
BACKGROUND: Dentin desensitizers may change the properties of smear layer and have adverse effects on the bonding performance of adhesive systems. AIM: The aim of this study was to compare the effect of bioactive glass (BG), hydroxyapatite, and diode laser desensitization on shear bond strength of resin composites to dentin at different time intervals. MATERIALS AND METHODS: Seventy-two caries-free maxillary premolars were selected. Buccal surfaces were flattened to expose dentin...
April 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28836729/transient-exposure-to-oxygen-or-nitrate-reveals-ecophysiology-of-fermentative-and-sulfate-reducing-benthic-microbial-populations
#17
Zainab Abdulrahman Beiruti, Srijak Bhatnagar, Halina E Tegetmeyer, Jeanine S Geelhoed, Marc Strous, S Emil Ruff
For the anaerobic remineralization of organic matter in marine sediments, sulfate reduction coupled to fermentation plays a key role. Here, we enriched sulfate-reducing/fermentative communities from intertidal sediments under defined conditions in continuous culture. We transiently exposed the cultures to oxygen or nitrate twice daily and investigated the community response. Chemical measurements, provisional genomes and transcriptomic profiles revealed trophic networks of microbial populations. Sulfate reducers coexisted with facultative nitrate reducers or aerobes enabling the community to adjust to nitrate or oxygen pulses...
August 24, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28835599/effect-of-a-calcium-phosphate-and-fluoride-paste-on-prevention-of-enamel-demineralization
#18
Takuya Nakata, Yuichi Kitasako, Alireza Sadr, Syozi Nakashima, Junji Tagami
This study aimed to examine the anti-demineralization capacities of (a) tetracalcium phosphate (TTCP) and dicalcium phosphate anhydrous (DCPA) and 950 ppm fluoride paste, (b) casein phosphopeptide amorphous calcium phosphate paste and (c) 950 ppm fluoride solution using optical coherence tomography (OCT). Enamel blocks were cut from the bovine incisors and treated using one of the above-mentioned three materials or deionized water as control (n=10). All samples were subjected to a demineralization gel for 1 h followed by a remineralization solution for 23 h...
August 24, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28828269/microbiome-succession-during-ammonification-in-eelgrass-bed-sediments
#19
Cassandra L Ettinger, Susan L Williams, Jessica M Abbott, John J Stachowicz, Jonathan A Eisen
BACKGROUND: Eelgrass (Zostera marina) is a marine angiosperm and foundation species that plays an important ecological role in primary production, food web support, and elemental cycling in coastal ecosystems. As with other plants, the microbial communities living in, on, and near eelgrass are thought to be intimately connected to the ecology and biology of eelgrass. Here we characterized the microbial communities in eelgrass sediments throughout an experiment to quantify the rate of ammonification, the first step in early remineralization of organic matter, also known as diagenesis, from plots at a field site in Bodega Bay, CA...
2017: PeerJ
https://www.readbyqxmd.com/read/28828151/remineralizing-effect-of-a-zinc-hydroxyapatite-toothpaste-on-enamel-erosion-caused-by-soft-drinks-ultrastructural-analysis
#20
Marco Colombo, Maria Mirando, Davide Rattalino, Riccardo Beltrami, Marco Chiesa, Claudio Poggio
BACKGROUND: The aim of the present in vitro study was to evaluate the protective effects of a zinc-hydroxyapatite toothpaste on repairing enamel erosion produced by a soft drink (Coca-Cola) compared to toothpastes with and without fluoride using Scanning Electron Microscopy (SEM). MATERIAL AND METHODS: Fifty specimens were assigned to 5 groups of 10 specimens each. (Group 1: no erosive challenge, no toothpaste treatment, group 2: erosive challenge, no toothpaste treatment, 3: erosive challenge, toothpaste without fluoride, group 4: erosive challenge, fluoride toothpaste treatment, group 5: erosive challenge, zinc-hydroxyapatite toothpaste treatment)...
July 2017: Journal of Clinical and Experimental Dentistry
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