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DEMINERALIZED

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https://www.readbyqxmd.com/read/28942948/fatigue-resistance-of-dentin-bonds-prepared-with-two-vs-three-step-adhesives-effect-of-carbodiimide
#1
Zihou Zhang, Dylan Beitzel, Hessam Majd, Mustafa Mutluay, Arzu Tezvergil-Mutluay, Franklin R Tay, David H Pashley, Dwayne Arola
The application of a cross-linker to demineralized dentin is reportedly effective at extending the durability of dentin bonds. OBJECTIVE: To compare the effect of a cross-linker pretreatment on the fatigue crack growth resistance of resin-dentin bonds prepared with a two- vs. three-step adhesive system. METHODS: Bonded interface Compact Tension (CT) specimens were prepared using commercial two- and three-step etch-and-rinse adhesives and compatible hybrid resin-composite...
September 21, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28941712/effect-of-proanthocyanidin-on-ultrastructure-and-mineralization-of-dentine-collagen
#2
D J Epasinghe, M F Burrow, C K Y Yiu
OBJECTIVE: Proanthocyanidin (PA) is a natural collagen cross-linker that has been used in dentine matrix biomodification for reparative and preventive therapies. This study evaluated the ultrastructure of collagen after its interaction with PA. Furthermore, the mineralization of PA-biomodified collagen matrix was observed. METHODS: Ten freshly extracted sound human molars were sectioned into 0.5mm×1.7mm×7mm beams for ultrastructural evaluation of PA and dentine matrix under Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM)...
September 18, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28936043/the-potential-of-mangosteen-garcinia-mangostana-peel-extract-combined-with-demineralized-freeze-dried-bovine-bone-xenograft-to-reduce-ridge-resorption-and-alveolar-bone-regeneration-in-preserving-the-tooth-extraction-socket
#3
Utari Kresnoadi, Maretaningtias Dwi Ariani, Eha Djulaeha, Nike Hendrijantini
BACKGROUND: Following the extraction of a tooth, bone resorption can cause significant problems for a subsequent denture implant and restorative dentistry. Thus, the tooth extraction socket needs to be maintained to reduce the chance of any alveolar ridge bone resorption. OBJECTIVE: The objective of this study is to determine whether the administration of mangosteen peel extracts (MPEs), combined with demineralized freeze-dried bovine bone xenograft (DFBBX) materials for tooth extraction socket preservation, could potentially reduce inflammation by decreased the expression of nuclear factor κβ (NfKb) and receptor activator of nuclear factor-κβ ligand (RANKL), to inhibit alveolar bone resorption, and increased of bone morphogenetic protein-2 (BMP2) expressions to accelerate alveolar bone regeneration...
July 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28934802/intravertebral-vacuum-cleft-and-its-varied-locations-within-osteoporotic-vertebral-compression-fractures-effect-on-therapeutic-efficacy
#4
Weibo Yu, Xiaobing Jiang, De Liang, Zhensong Yao, Ting Qiu, Linqiang Ye, Shuncong Zhang, Daxiang Jin
BACKGROUND: Previous studies have reported a high incidence of re-collapse of the augmented vertebrae after percutaneous vertebral augmentation (PVA) for osteoporotic vertebral compression fractures (OVCFs) with intravertebral vacuum cleft (IVC) during long-term follow-up. Previous IVC might be considered an important predisposing factor for re-collapse, but the prior studies could not find a significant correlation. OBJECTIVE: To determine the incidence and distribution characteristics of IVCs and to further assess IVCs in their varied locations...
September 2017: Pain Physician
https://www.readbyqxmd.com/read/28932310/remineralization-potential-of-three-tooth-pastes-on-enamel-caries
#5
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
#6
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/28920187/sub-ablative-er-cr-ysgg-laser-irradiation-under-all-ceramic-restorations-effects-on-demineralization-and-shear-bond-strength
#7
Serdar Bağlar
This study evaluated the caries resistant effects of sub-ablative Er,Cr:YSGG laser irradiation alone and combined with fluoride in comparison with fluoride application alone on enamel prepared for veneer restorations. And also, evaluated these treatments' effects on the shear bond strength of all-ceramic veneer restorations. One hundred and thirty-five human maxillary central teeth were assigned to groups of 1a-control, 1b-laser treated, 1c-fluoride treated, 1d-laser + fluoride treated for shear bond testing and to groups of 2a-positive control(non-demineralised), 2b-laser treated, 2c-fluoride treated, 2d-laser + fluoride treated, 2e-negative control (demineralised) for microhardness testing (n = 15, N = 135)...
September 17, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28918134/crystallization-and-demineralization-phenomena-in-washed-rind-cheese
#8
Gil F Tansman, Paul S Kindstedt, John M Hughes
This report documents an observational study of a high-moisture washed-rind cheese. Three batches of cheese were sampled on a weekly basis for 6 wk and again at wk 10. Center, under-rind, rind, and smear samples were tested for pH, moisture, and selected mineral elements. Powder x-ray diffractometry and petrographic microscopy were applied to identify and image the crystal phases. The pH of the rind increased by over 2 pH units by wk 10. The pH of the under-rind increased but remained below the rind pH, whereas the center pH decreased for most of aging and only began to rise after wk 5...
September 13, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28918101/silver-diamine-fluoride-remineralized-artificial-incipient-caries-in-permanent-teeth-after-bacterial-ph-cycling-in-vitro
#9
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/28916162/fluoride-concentration-and-amount-of-dentifrice-influence-enamel-demineralization-in-situ
#10
M F Paiva, A C B Delbem, M Danelona, M E Nagata, F R N Moraes, G E G Coclete, R F Cunha, M A R Buzalaf, J P Pessan
OBJECTIVES: This study evaluated the effect of conventional (CD, 1100ppm F) and low-fluoride (LFD, 550ppm F) dentifrices, applied in different quantities, on enamel demineralization, and on fluoride (F) concentrations in the dental biofilm formed in situ. METHODS: Five combinations of dentifrices and quantities were tested: placebo (P-F-free) applied on all brush bristles; LFD applied by the transversal technique (0.3g-T1) or on all bristles (0.6g-T2); and CD applied in a pea-sized amount (0...
September 12, 2017: Journal of 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
#11
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/28913608/efficacy-of-%C3%AE-lipoic-acid-against-cadmium-toxicity-on-metal-ion-and-oxidative-imbalance-and-expression-of-metallothionein-and-antioxidant-genes-in-rabbit-brain
#12
Hamida M Saleh, Yasser S El-Sayed, Sherif M Naser, Abdelgawad S Eltahawy, Atsuto Onoda, Masakazu Umezawa
To explore the protective efficacy of α-lipoic acid (ALA) against Cd-prompted neurotoxicity, young male New Zealand rabbits (Oryctolagus cuniculus) were divided randomly into four groups. Group 1 (control) received demineralized water. Group 2 (Cd) administered cadmium chloride (CdCl2) 3 mg/kg bwt. Group 3 (ALA) administered ALA 100 mg/kg bwt. Group 4 (Cd + ALA) administered ALA 1 h after Cd. The treatments were administered orally for 30 consecutive days. Cd-induced marked disturbances in neurochemical parameters were indicated by the reduction in micro- and macro-elements (Zn, Fe, Cu, P, and Ca), with the highest reduction in Cd-exposed rabbits, followed by Cd + ALA group and then ALA group...
September 14, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28906138/in-vivo-effect-of-antibacterial-and-fluoride-releasing-adhesives-on-enamel-demineralization-around-brackets-a-micro-ct-study
#13
Aslihan Zeynep Oz, Abdullah Alper Oz, Sabahat Yazıcıoglu
OBJECTIVES: The aim of this in vivo study was to investigate the preventive effect of two different adhesives on enamel demineralization and compare these adhesives with a conventional one. MATERIALS AND METHODS: Fifteen patients requiring the extraction of their first four premolars for orthodontic treatment were included in the study. One premolar was randomly selected, and an antibacterial monomer-containing and fluoride-releasing adhesive (Clearfil Protect Bond, Kuraray Medical, Okayama, Japan) was used for orthodontic bracket bonding...
September 14, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28904830/review-of-commercially-available-demineralized-bone-matrix-products-for-spinal-fusions-a-selection-paradigm
#14
REVIEW
J A Shehadi, S M Elzein
BACKGROUND: Spinal fusions are commonly performed in the US each year for various spinal pathologies. There are multiple commercially available graft material options for these procedures, including an abundance of demineralized bone matrix (DBM) products. METHODS: This study reviews, clearly organizes, and puts forth meaningful information on select biological and physical properties of several commercially available DBM products. In addition, we provide an alternative classification method of DBM products by carrier...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28902250/effect-of-cpp-acp-paste-with-and-without-co2-laser-irradiation-on-demineralized-enamel-microhardness-and-bracket-shear-bond-strength
#15
Nasrin Farhadian, Loghman Rezaei-Soufi, Seyed Farzad Jamalian, Maryam Farhadian, Shahrzad Tamasoki, Milad Malekshoar, Bahareh Javanshir
Introduction: Many patients seeking orthodontic treatment already have incipient enamel lesions and should be placed under preventive treatments. The aim of this in vitro study was to evaluate the effect of CPP-ACP paste and CO2 laser irradiation on demineralized enamel microhardness and shear bond strength of orthodontic brackets. Methods: Eighty caries-free human premolars were subjected to a demineralization challenge using Streptococcus mutans. After demineralization, the samples were randomly divided into five equal experimental groups: Group 1 (control), the brackets were bonded without any surface treatment; Group 2, the enamel surfaces were treated with CPP-ACP paste for 4 minutes before bonding; Group 3, the teeth were irradiated with CO2 laser beams at a wavelength of 10...
July 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28902235/trends-in-restorative-composites-research-what-is-in-the-future
#16
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/28895677/can-babies-oral-wipes-with-fluoride-and-or-calcium-glycerophosphate-prevent-cariogenic-demineralization-an-in-vitro-study
#17
Karla M Rezende, Juliana P Zuim, Thiago S Carvalho, Maria S Côrrea, Marcelo Bönecker
BACKGROUND: The difficulties in reaching a good level of oral hygiene in young babies can be partly overcome with the use of baby oral wipes, which have been shown to effectively remove plaque from deciduous teeth. The presence of fluoride and calcium in these wipes could also prevent further demineralisation of the teeth, as well as promote remineralisation. The aim of this study is, therefore, was to analyze the preventive effect of OW containing F and CaGP on cariogenic demineralization in vitro...
September 12, 2017: Minerva Stomatologica
https://www.readbyqxmd.com/read/28890234/calibration-of-a-lactic-acid-model-for-simulating-biofilm-induced-degradation-of-the-dentin-composite-interface
#18
Laikuan Zhu, Yuping Li, Carola A Carrera, Yung-Chung Chen, Mingyu Li, Alex Fok
OBJECTIVE: To verify and calibrate a chemical model for simulating the degradation of the dentin-composite interface induced by multi-species oral biofilms in vitro. METHODS: Dentin-composite disks (5-mm dia.×2-mm thick) were made from bovine incisor roots and filled with either Z100™ (Z100) or Filtek™ LS (LS) composite. The disks, which were covered with nail varnish, but with one of the dentin-composite margins exposed, were immersed in lactic acid solution at pH 4...
September 8, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28888142/interrelationships-between-electrical-mechanical-and-hydration-properties-of-cortical-bone
#19
Mustafa Unal, Fatih Cingoz, Cevat Bagcioglu, Yilmaz Sozer, Ozan Akkus
Interrelationship between electrical and mechanical properties of cortical bone and the role of bone composition in this interrelationship are not comprehensively investigated to date. This study aimed to investigate associations of electrical properties (i.e., specific impedance, dielectric constant, and conductivity) with mechanical properties (i.e., toughness, strength and elastic modulus) of wet and sequentially dehydrated cortical bone. Bovine cortical bone samples (N = 24) were subjected to three-point bending test...
August 30, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28887850/wear-profile-of-canal-wall-surfaces-and-bond-strength-of-endodontic-sealers-after-in-situ-acid-challenge
#20
R Silva-Neto, M Sousa-Neto, J Pecora, R Palma-Dibb, A Souza-Gabriel
AIM: To evaluate the wear of root wall surfaces, the bond strength of sealers to dentine and the demineralization around filling material after the canals were exposed to acid challenge. METHODOLOGY: Eighty-seven roots of mandibular incisors were selected. Thirty-two were used in the bond strength in vitro study (n=8) and 55 in the in situ study (n=11). Root canals were prepared biomechanically and then filled with gutta-percha and AH Plus, MTA Fillapex, Sealapex or Endofill...
September 8, 2017: International Endodontic Journal
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