نتایج جستجو برای: enamel

تعداد نتایج: 10227  

Journal: :Dental materials journal 2005
Norihiro Yamada Ken Miyazawa Hideyuki Miwa Masako Tabuchi Takamasa Kondo Shigemi Goto

The aims of this study were to examine the enamel protective effect of a direct laminate veneer against acidic conditions, measure the amount of fluoride released from the veneer and which was taken up by the enamel, as well as evaluate the usefulness of the veneer for orthodontic treatment. First, a veneer was applied to rabbit incisors. Then, apart from using profile measurement microscope an...

Journal: :Journal of dental research 1986
J W Bawden P McLean T G Deaton

Suckling rat pups were given intraperitoneal fluoride injections at selected ages so that we could study fluoride uptake in the enamel of the maxillary first molar at various stages of enamel development. Plasma fluoride levels in six-day-old and 11-day-old pups were monitored following the intraperitoneal injection of fluoride. The findings indicate that: (1) fluoride was more easily taken up ...

2012
Nilgün Akgül Fatma Caglayan Nurhan Durna Muhammed A. Sümbüllü Hayati M. Akgül Dogan Durna

OBJECTIVE The aim of this study was to evaluate the frequency of enamel pearls according to population, sex and tooth groups on Cone-Beam Computed Tomography (CBCT) or Dental Volumetric Tomography (DVT) scans of patients, retrospectively. STUDY DESIGN In this study, 15185 teeth belonging to 768 patients, 430 female and 338 male, was performed cross-sectional examination by CBCT. The volumetri...

2011
W. El-Sayed R.C. Shore D.A. Parry C.F. Inglehearn A.J. Mighell

BACKGROUND Mutations in WDR72 have been identified in autosomal recessive hypomaturation amelogenesis imperfecta (AI). OBJECTIVE to describe a novel WDR72 mutation and report the ultrastructural enamel phenotype associated with a different WDR72 mutation. METHODS A family segregating autosomal recessive hypomaturation AI was recruited, genomic DNA obtained and WDR72 sequenced. Four deciduou...

2017
Sule Bayrak Nuray Tuloglu Huseyin Bicer Emine Sen Tunc

This study aimed to investigate the effect of a fluoride varnish with added casein phosphopeptide-amorphous calcium phosphate treatment on the prevention of enamel erosion, and it compared the results with those of other fluoride varnishes. Fifty enamel specimens obtained from bovine incisors were randomly divided into five groups (n = 10) based on the type of surface pretreatment used: intact ...

Journal: :Acta stomatologica Croatica 2016
Vesna Erika Modrić Željko Verzak Zoran Karlović

OBJECTIVES To investigate the frequency of developmental defects of enamel (DDE) in children with intellectual disability. SUBJECTS AND METHODS Children aged 5-18 years (72 children with intellectual disabilities and 72 controls) were included in the study. All the teeth were screened for developmental defects of enamel using the modified Developmental defects of enamel (mDDE) index. RESULT...

Journal: :Journal of oral science 2007
Marinês Nobre-dos-Santos Lidiany K A Rodrigues Altair A Del-Bel-Cury Jaime A Cury

Since the anticaries effect of a dentifrice with low fluoride concentration and low pH is unknown, the aim of the present study was to evaluate in situ the enamel remineralizing ability of this type of formulation. A double-blind crossover design employing 3 phases of 45 days was conducted. Six adult volunteers wore palatal devices containing 6 previously demineralized human dental enamel slabs...

Journal: :Journal of structural biology 2013
Joachim Enax Helge-Otto Fabritius Alexander Rack Oleg Prymak Dierk Raabe Matthias Epple

Structure and composition of teeth of the saltwater crocodile Crocodylus porosus were characterized by several high-resolution analytical techniques. X-ray diffraction in combination with elemental analysis and infrared spectroscopy showed that the mineral phase of the teeth is a carbonated calcium-deficient nanocrystalline hydroxyapatite in all three tooth-constituting tissues: Dentin, enamel,...

Journal: :PLoS ONE 2009
Reina Tanaka Yo Shibata Atsufumi Manabe Takashi Miyazaki

BACKGROUND Management of human teeth has moved from a surgical to a more conservative approach of inhibiting or preventing lesion progression. Increasing enamel mineralization is crucial in this regard. A potential difficulty is the preferential mineralization of the outermost portion of the enamel that can prevent overall mineralization. We describe a strategy for increasing the mineralization...

2014
Xiao-quan Mao

INTRODUCTION In general, enamel pearls are found in maxillary molars as a small globule of enamel. However, this case report describes an enamel pearl with a prolate spheroid shape which is 1.8mm wide and 8mm long. The different type of enamel pearl found in my clinic has significantly improved our understanding of enamel pearl etiology and pathophysiology. CASE PRESENTATION A 42-year-old Han...

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