keyword
MENU ▼
Read by QxMD icon Read
search

Enamel

keyword
https://www.readbyqxmd.com/read/28817736/performance-of-class-i-composite-restorations-when-polished-immediately-or-after-one-day-water-storage
#1
Masao Irie, Yukinori Maruo, Goro Nishigawa
This study investigated the effects on gap formation in Class I restorations (observed by vertical and horizontal forms of inspection) and on the mechanical properties of nine resin composite filling materials when the restorations were subject to finishing immediately after setting or after one-day water storage. Class I restorations with resin composite fillings were polished either immediately (3 min) after setting or after one-day water storage. Interfacial gap formation (observed by vertical inspection) was assessed using 14 gap measurement points along the interface between the restoration and cavity walls and floor (n = 10 per resin composite; total points measured per time point = 140)...
2017: PloS One
https://www.readbyqxmd.com/read/28817644/cheek-tooth-morphology-and-ancient-mitochondrial-dna-of-late-pleistocene-horses-from-the-western-interior-of-north-america-implications-for-the-taxonomy-of-north-american-late-pleistocene-equus
#2
Christina I Barrón-Ortiz, Antonia T Rodrigues, Jessica M Theodor, Brian P Kooyman, Dongya Y Yang, Camilla F Speller
Horses were a dominant component of North American Pleistocene land mammal communities and their remains are well represented in the fossil record. Despite the abundant material available for study, there is still considerable disagreement over the number of species of Equus that inhabited the different regions of the continent and on their taxonomic nomenclature. In this study, we investigated cheek tooth morphology and ancient mtDNA of late Pleistocene Equus specimens from the Western Interior of North America, with the objective of clarifying the species that lived in this region prior to the end-Pleistocene extinction...
2017: PloS One
https://www.readbyqxmd.com/read/28817591/susceptibility-of-bovine-dental-enamel-with-initial-erosion-lesion-to-new-erosive-challenges
#3
Gabriela Cristina de Oliveira, Guida Paola Genovez Tereza, Ana Paula Boteon, Brunna Mota Ferrairo, Priscilla Santana Pinto Gonçalves, Thiago Cruvinel da Silva, Heitor Marques Honório, Daniela Rios
This in vitro study evaluated the impact of initial erosion on the susceptibility of enamel to further erosive challenge. Thirty bovine enamel blocks were selected by surface hardness and randomized into two groups (n = 15): GC- group composed by enamel blocks without erosion lesion and GT- group composed by enamel blocks with initial erosion lesion. The baseline profile of each block was determined using the profilometer. The initial erosion was produced by immersing the blocks into HCl 0.01 M, pH 2.3 for 30 seconds, under stirring...
2017: PloS One
https://www.readbyqxmd.com/read/28817131/connective-tissue-graft-wall-technique-and-enamel-matrix-derivative-for-the-treatment-of-infrabony-defects-case-reports
#4
Giovanni Zucchelli, Lham Mounssif, Matteo Marzadori, Claudio Mazzotti, Pietro Felice, Martina Stefanini
The present case report describes a modification of the connective tissue graft wall technique with enamel matrix derivative applied to treat deep vertical bony defects. The technique presented uses a palatal incision to gain access to the bony defect. Deep infrabony defects affecting two maxillary central incisors associated with interdental and buccal gingival recession were treated. At 1 year after surgery, 9 and 6 mm of interdental clinical attachment level gain were seen in cases 1 and 2, respectively...
September 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28816199/early-childhood-caries-a-review
#5
Abdulfatah Alazmah
AIM: To review and update the current knowledge about early childhood caries (ECC) and its etiology, prevalence, risk factors, management, and preventive strategies. BACKGROUND: Early childhood caries is a disease affecting significantly both well-developed and industrial nations. The ECC can significantly affect the child's quality of life, as it may lead to infection, swelling, pain, and other symptoms. The ECC affects children after eruption of primary teeth until age of around 5 years...
August 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28815247/-changes-of-cementum-endotoxin-levels-in-different-teeth-with-periodontitis-treated-with-root-conditioning
#6
Chang-Sheng Fu, Rong-Sen Liu, Yun Luo, Long Ou, Ying-Chao Li, Xian-Hua Zhang
PURPOSE: To observe the changes of endotoxin levels after different teeth with periodontitis were treated with different methods. METHODS: Six healthy premolars extracted for orthodontic reasons and 36 posterior teeth extracted due to severe periodontitis were selected. Each tooth was processed from two 4 mm×4 mm×1 mm cementum pieces 2 mm under the cementum-enamel junction, each tooth with periodontitis was numbered. Healthy teeth served as negative control group, one of the two tablets from each tooth with periodontitis was selected in the periodontitis group, which was not treated with root surface treatment...
April 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28815243/-effects-of-emd-on-relapse-and-root-repair-after-orthodontic-tooth-movement-in-rats
#7
Qin Hu, Xiao-Lin Xu, Jian-Ping Zhou, Hong-Wei Dai
PURPOSE: To study the effect of enamel matrix derivative(EMD) on root repair and tooth movement relapse after orthodontic tooth movement in rats. METHODS: Twenty 10-weeks old male rats were divided into experimental and control group randomly (n=10). 100 g force was exerted to the left maxillary first molars for 14 days and then removed. EMD was injected in rats in the experimental group since appliance was removed. The control group received no injection. Micro-CT was taken to analyze the changes of root resorption volume and distance of tooth movement...
April 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28814900/acidic-oral-moisturizers-with-ph-below-6-7-may-be-harmful-to-teeth-depending-on-formulation-a-short-report
#8
Alex J Delgado, Vilhelm G Olafsson
Xerostomia affects 30% of the population and manifests as a side effect of medications, systemic diseases, or cancer therapy. Oral moisturizers are prescribed to overcome the ailments of dry mouth and its symptoms. It is imperative that these products help to restore hyposalivation and that they do not present any secondary effect that can harm oral health. It has been shown in the literature that some oral moisturizers may have an erosive potential due to their acidic pH, which is below the critical pH of dentin and enamel...
2017: Clinical, Cosmetic and Investigational Dentistry
https://www.readbyqxmd.com/read/28814364/effect-of-cured-versus-uncured-adhesive-inclusion-on-the-microtensile-bond-strength-of-sealants
#9
Austin McMurphy, Xiaoming Xu, Suzanne Fournier, Zafer C Cehreli, Kramer Sherman, Courtney Tremmel, Qingzhao Yu, Janice Townsend
PURPOSE: To determine the impact of light curing of bonding agents on the microtensile bond strength (MTBS) of sealants on extracted teeth. METHODS: Flat enamel surfaces were created on 54 extracted, sound human molars by sequential grinding. Three different sealants- Clinpro (3M ESPE), Ultraseal XT Hydro (Ultradent), and Fluorshield VLC (Dentsply)- were placed after acid etching without a bonding agent (control) or with three different bonding agents - Adper Single Bond Plus (3M ESPE), Peak Universal Bond (Ultradent), and Prime&Bond Elect (Dentsply)- each in both light-cured and uncured form...
May 15, 2017: Journal of Dentistry for Children
https://www.readbyqxmd.com/read/28814183/diagnoses-and-treatment-of-dental-disorders-in-a-research-colony-of-macaca-fascicularis-a-case-series
#10
Philippe Roux, Muriel Brecheisen, Rafael de Carvalho, Alessandra Bergadano
During daily routine oral examinations in a research colony of nonhuman primates (NHPs, Macaca fascicularis), a variety of oral-dental lesions were identified. A dental care program was established based on these findings. Based on the presence of dental clinical signs and their severity, 31 animals were triaged to be examined and treated by a veterinarian. Clinical examination consisted of visual inspection using a periodontal probe/explorer and full or partial mouth dental radiographs. Treatment was performed during the same procedure...
September 2017: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28813629/the-impact-of-the-eda-pathway-on-tooth-root-development
#11
J M Fons Romero, H Star, R Lav, S Watkins, M Harrison, M Hovorakova, D Headon, A S Tucker
The Eda pathway ( Eda, Edar, Edaradd) plays an important role in tooth development, determining tooth number, crown shape, and enamel formation. Here we show that the Eda pathway also plays a key role in root development. Edar (the receptor) is expressed in Hertwig's epithelial root sheath (HERS) during root development, with mutant mice showing a high incidence of taurodontism: large pulp chambers lacking or showing delayed bifurcation or trifurcation of the roots. The mouse upper second molars in the Eda pathway mutants show the highest incidence of taurodontism, this enhanced susceptibility being matched in human patients with mutations in EDA-A1...
August 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28813496/uneven-distribution-of-enamel-dentine-and-cementum-in-cheek-teeth-of-domestic-horses-equus-caballus-a-micro-computed-tomography-study
#12
Lauritz Martin Englisch, Kathrin Kostrzewa, Susan Kopke, Klaus Failing, Carsten Staszyk
BACKGROUND: Hypsodont equine cheek teeth possess large dental crowns, resting partly in the bony alveolus. Over a horse's life cheek teeth erupt continuously to compensate for occlusal wear of 3-4 mm per year. Parts of the crown initially resting in the bony alveolus become progressively exposed at the occlusal surface with time. Hitherto, it is unclear whether the typical structure of the equine occlusal surface, composed of a complex arrangement of enamel, dentin and cementum, remains constant or undergoes structural changes with age...
2017: PloS One
https://www.readbyqxmd.com/read/28812741/persistent-tropical-foraging-in-the-highlands-of-terminal-pleistocene-holocene-new-guinea
#13
Patrick Roberts, Dylan Gaffney, Julia Lee-Thorp, Glenn Summerhayes
The terminal Pleistocene/Holocene boundary (approximately 12-8 thousand years ago) represented a major ecological threshold for humans, both as a significant climate transition and due to the emergence of agriculture around this time. In the highlands of New Guinea, climatic and environmental changes across this period have been highlighted as potential drivers of one of the earliest domestication processes in the world. We present a terminal Pleistocene/Holocene palaeoenvironmental record (12-0 thousand years ago ) of carbon and oxygen isotopes in small mammal tooth enamel from the site of Kiowa...
February 6, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812169/bond-strength-of-etch-and-rinse-and-self-etch-adhesive-systems-to-enamel-and-dentin-irradiated-with-a-novel-co2-9-3%C3%A2-%C3%AE-m-short-pulsed-laser-for-dental-restorative-procedures
#14
Peter Rechmann, N Bartolome, R Kinsel, R Vaderhobli, B M T Rechmann
The objective of this study was to evaluate the influence of CO2 9.3 μm short-pulsed laser irradiation on the shear bond strength of composite resin to enamel and dentin. Two hundred enamel and 210 dentin samples were irradiated with a 9.3 µm carbon dioxide laser (Solea, Convergent Dental, Inc., Natick, MA) with energies which either enhanced caries resistance or were effective for ablation. OptiBond Solo Plus [OptiBondTE] (Kerr Corporation, Orange, CA) and Peak Universal Bond light-cured adhesive [PeakTE] (Ultradent Products, South Jordan, UT) were used...
August 15, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28810187/histochemical-and-immunohistochemical-examination-of-odontoblasts-petroblasts-in-petrodentine-formation-of-lungfish
#15
Shunya Oka, Ichiro Sasagawa, Mikio Ishiyama
OBJECTIVE: Petrodentine, the core of the lungfish tooth plate, is a well-mineralized tissue similar to mammalian enamel and analogous to enameloid in fish teeth. Petrodentine is formed solely by petroblasts, which are specialized odontoblasts, whereas enameloid is a composite tissue produced by both odontoblasts and dental epithelial cells. To clarify the details of petrodentine formation, petroblasts were investigated using histochemical and immunohistochemical techniques. METHODS: Extant lungfish (Lepidosiren paradoxa) were used in this study...
August 3, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28808449/efficacy-of-enamel-matrix-derivative-in-vital-pulp-therapy-a-review-of-literature
#16
REVIEW
Shariq Najeeb, Zohaib Khurshid, Muhammad Sohail Zafar, Sana Zohaib, Fahad Siddiqui
INTRODUCTION: Vital pulp therapy (VPT) aims to preserve the health and maintain life of the tooth pulp which has been compromised by caries, trauma or restorative procedures. Recently, enamel matrix derivative (EMD) has been introduced as a material for vital pulp therapy. The aim of this review is to critically analyze and summarize the available literature on EMD for VPT. METHODS AND MATERIALS: Online databases (PubMED/MEDLINE, Google Scholar, ISI Web of Science, and Wiley-Online) were searched by using the following keywords in various combinations: Enamel Matrix Derivative, Emdogain, 'Vital Pulp Therapy, 'Apexogenisis', Apexification, Pulp Capping, Endodontics, Dentine and Pulpotomy for studies indexed from January 1949 to April 2016...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28808430/amelogenin-affects-brushite-crystal-morphology-and-promotes-its-phase-transformation-to-monetite
#17
Dongni Ren, Qichao Ruan, Jinhui Tao, Jonathan Lo, Steven Nutt, Janet Moradian-Oldak
Amelogenin protein is involved in organized apatite crystallization during enamel formation. Brushite (CaHPO4·2H2O), one of the precursors of hydroxyapatite mineralization in vitro, has been used for fabrication of biomaterials for hard tissue repair. In order to explore its potential application in biomimetic material synthesis, we studied the influence of the enamel protein amelogenin on brushite morphology and phase transformation to monetite. Our results show that amelogenin can adsorb onto the surface of brushite, leading to the formation of layered morphology on the (010) face...
September 7, 2016: Crystal Growth & Design
https://www.readbyqxmd.com/read/28808205/farnesol-inhibits-development-of-caries-by-augmenting-oxygen-sensitivity-and-suppressing-virulence-associated-gene-expression-instreptococcus-mutans
#18
Li Cao, Zhen-Zhen Zhang, Shuang-Bo Xu, Ming Ma, Xin Wei
Streptococcus mutans is a primary etiological agent of dental caries. Farnesol, as a potential antimicrobial agent, inhibits the development ofS. mutans biofilm. In this study, we hypothesized that farnesol inhibits caries development in vitro and interferes with biofilm formation by regulating virulence-associated gene expression. The inhibitory effects of farnesol to S. mutans biofilms on enamel surfaces were investigated by determining micro-hardness and calcium measurements. Additionally, the morphological changes ofS...
July 13, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28806687/mineralization-defects-are-comparable-in-fluorotic-impacted-human-teeth-and-fluorotic-mouse-incisors
#19
Rozita Jalali, Franck Guy, Samaneh Ghazanfari, Don Lyaruu, Leo van Ruijven, Pamela DenBesten, Stefania Martignon, Gina Castiblanco, Antonius L J J Bronckers
OBJECTIVE: Fluoride excess of 0.05-0.07mgF/kgbw/day in water or food additives like salt is the principal cause of endemic dental fluorosis. How fluoride causes these defects is not clear yet. Recent studies in rodents suggest that development of enamel fluorosis is associated with insufficient neutralization of protons released during the formation of hypermineralized lines. DESIGN: Here we examined whether hypermineralization could also be assessed by MicroCT in developing molar enamel of humans exposed to fluoride...
July 29, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28806426/comparative-evaluation-of-the-effect-of-laser-etching-on-the-shear-bond-strength-of-crowns-cemented-with-two-different-luting-agents-an-in-vitro-study
#20
Ankur Dahiya, Paresh Gandhi, Nadim Z Baba
PURPOSE: The aim of this study was to compare the shear bond strength of crowns cemented on natural teeth after surface treatment of the enamel with an erbium-doped yttrium aluminum garnet (Er:YAG) laser. MATERIALS AND METHODS: Crown preparation was done for 40 full-metal crowns, and wax patterns with loops were cast in a cobalt-chromium alloy. The Er:YAG laser was used for surface treatment of some teeth, and teeth without surface treatment acted as the control...
August 14, 2017: International Journal of Prosthodontics
keyword
keyword
22224
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"