نتایج جستجو برای: tooth demineralization

تعداد نتایج: 90560  

2012
Carmen Llena Ana María Leyda Leopoldo Forner

Dental caries is a highly prevalent disease, although, in most developed countries, its prevalence has declined, but the disease remains a major public health problem (Selwitz et al., 2007). Signs of the caries process cover a continuum from the first molecular changes in the apatite crystals of the tooth to a visible white-spot lesion, continuing with dentin involvement and eventual cavitation...

Journal: :American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics 2014
Eser Tüfekçi Daniel R Pennella John C Mitchell Al M Best Steven J Lindauer

INTRODUCTION A new, highly filled primer is currently marketed as a fluoride delivery system effective in reducing white spot lesions in orthodontic patients. However, no studies in the literature support this claim. The purpose of this in-vivo study was to investigate the retention and the efficacy of this primer in reducing the formation of white spot lesions. METHODS In each patient for wh...

Journal: :Journal of endodontics 2008
Gustavo De-Deus Matthias Zehnder Claudia Reis Sandra Fidel Rivail Antonio Sergio Fidel João Galan Sidney Paciornik

In the present study the smear layer dissolution kinetics of 18% etidronate (HEBP), 9% HEBP, and 17% ethylenediaminetetraacetic acid (EDTA) on human dentin were quantitatively and longitudinally analyzed by using a single-tooth comparative model. Coronal dentin disks were prepared from 3 maxillary human molars. A standardized smear layer was produced on the pulpal side of each disk. The smear l...

2016
Ensanya Ali Abou Neel Anas Aljabo Adam Strange Salwa Ibrahim Melanie Coathup Anne M Young Laurent Bozec Vivek Mudera

Biomineralization is a dynamic, complex, lifelong process by which living organisms control precipitations of inorganic nanocrystals within organic matrices to form unique hybrid biological tissues, for example, enamel, dentin, cementum, and bone. Understanding the process of mineral deposition is important for the development of treatments for mineralization-related diseases and also for the i...

Journal: :Journal of clinical and diagnostic research : JCDR 2015
Bejoy Mony A V Rajesh Ebenezar Mohamed Fayas Ghani Ashwin Narayanan Anand S Ajit George Mohan

AIM To evaluate the remineralization potential of enamel surface lesion using chicken eggshell powder (CESP) solution. MATERIALS AND METHODS Ten freshly extracted un-erupted third molars decoronated at cement-enamel junction (CEJ) used in this study. Each decoronated tooth was sectioned to get 4 samples of enamel blocks such that 40 blocks were obtained which were then subjected to deminerali...

2017
Linda Hassanali Ferranti S. Wong Richard J. M. Lynch Paul Anderson

Introduction: Tooth enamel mineral loss is influenced by its solubility product value, which is fundamental to the understanding of de- and remineralization resulting from a carious or erosive challenge. Published pKsp values for human enamel and hydroxyapatite range from 110 to 126 suggesting a heterogeneous nature of enamel solubility. However, this range of values may also result from the va...

Journal: :Brazilian dental journal 2012
Danielle Torres Azevedo Juliana Jendiroba Faraoni-Romano Juliana Dos Reis Derceli Regina Guenka Palma-Dibb

Most studies dealing with the caries preventive action of Nd:YAG laser have been done in permanent teeth and studies on primary teeth are still lacking. The aim of this study was to evaluate in vitro the effect of Nd:YAG laser combined or not with fluoride sources on the acid resistance of primary tooth enamel after artificial caries induction by assessing longitudinal microhardness and deminer...

Journal: :Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie 2012
O Caraivan H Manolea Dorina Corlan Puşcu A Fronie Adina Bunget L Mogoantă

Chronic periodontitis is one of the most frequent and severe diseases involving the tooth. Untreated, they can lead to tooth loss. Our study involved 67 patients with chronic marginal periodontitis who underwent tooth extraction, of which 29 had moderate periodontal lesions and 38 severe periodontal lesions. The microscopic study of the dental pulp revealed significant changes in all patients. ...

Journal: :Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie 2011
Cristina Nicolae Mihaela Hîncu C Amariei

UNLABELLED In this in vitro study, examination of the morphological changes of enamel surface after topical application of a sodium fluoride solution was performed. Validation of the Fluorostom effectiveness became possible, after 10 years of using for the caries prevention national program. MATERIALS AND METHODS Sound human enamel sections, ware treated with a 0.05% sodium fluoride solution....

Journal: :Journal of biomedical optics 2012
Nima Tabatabaei Andreas Mandelis Mehdi Dehghany Kirk H Michaelian Bennet T Amaechi

Dental caries is the leading cause of tooth loss, which can promptly be prevented if detected in early stages of progression. Unfortunately, conventional diagnostic modalities currently used in dentistry lack the sensitivity to detect early caries. The authors' intention is to compare the ability of polarized Raman spectroscopy and thermophotonic imaging to make early caries diagnosis. Extracte...

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