نتایج جستجو برای: tooth staining

تعداد نتایج: 164699  

Journal: :The journal of contemporary dental practice 2003
Khalid Almas Mawahib Al-Harbi Maryam Al-Gunaim

Esthetics plays an important role in dentistry today. Because of an increased emphasis on beauty and health, cosmetic dentistry has been the thrust to the forefront of many practices. Many health products are used for bleaching teeth, but all side effects are not known. Tooth sensitivity and gingival irritation are the most common side effects, but they are typically mild and transient in natur...

Journal: :Brazilian dental journal 2009
Elizabeth Ferreira Martinez Luciana Alves Herdy da Silva Cristiane Furuse Ney Soares de Araújo Vera Cavalcanti de Araújo

Dentin matrix protein 1 (DMP1) is an acidic phosphoprotein that plays an important role in mineralized tissue formation by initiation of nucleation and modulation of mineral phase morphology. The purpose of the present study was to examine the immunoexpression of DMP1 in tooth germs of 7 human fetuses at different gestational ages (14, 16, 19, 20, 21, 23 and 24 weeks) comparing with completed t...

2014
Su-Jung Mah Yoonjung Lee Youn-Sic Chun Won Hee Lim

Purpose: The purpose of this study was to investigate the expression of MMP-9 and MMP-13 on compression side of tooth movement. Material and Methods: Twenty male Wistar rats were used for this experiment. Maxillary right first molar was moved orthodontically with a constant force of 20 g and on the side of the maxillary left first molar was used as control group. On the 4th, 10th and 17th days ...

Journal: :Dentistry today 2006
Leendert Boksman Tony Pensak

merization of dental composite materials during lightcuring is a leading cause of adhesive restoration failure, resulting in postoperative sensitivity, marginal staining, and recurrent caries.1 This polymerization contraction shrinkage creates stresses as high as 13 MPa between the composite material and tooth interface2 (1 MPa = 145 psi). This stress can exceed the tensile strength of the enam...

Journal: :Physiological and biochemical zoology : PBZ 2012
Tom Geerinckx Ann Huysseune Matthieu Boone Myriam Claeys Marjolein Couvreur Barbara De Kegel Peter Mast Luc Van Hoorebeke Kim Verbeken Dominique Adriaens

Teeth are generally used for actions in which they experience mainly compressive forces acting toward the base. The ordered tooth enamel(oid) and dentin structures contribute to the high compressive strength but also to the minor shear and tensile strengths. Some vertebrates, however, use their teeth for scraping, with teeth experiencing forces directed mostly normal to their long axis. Some sc...

ChitsazMT A Delazar R Pourabbas

Dental plaque is a well known etiologic factor for gingivitis. Recently, herbal extracts are a matter of scientific interest to inhibit plaque accumulation on teeth. The purpose of this study was to evaluate the effects of German Chamomile (GC) mouth wash on plaque and gingival indices. Twenty five gingivitis patients (15 female and 10 male, mean age 27±7.76 years) participated in this contr...

Journal: :The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association 2015
Takero Otsuka Toshitsugu Kawata

OBJECTIVES To investigate the stain removal ability of melamine sponge before aesthetic tooth whitening in extracted teeth. METHODS Melamine sponge of thickness 40 mm was compressed and the destruction of the partition wall structure during the compression process was examined under a stereoscopic microscope. An extracted human tooth was cleaned by normal polishing or with melamine sponge for...

Journal: :Dental traumatology : official publication of International Association for Dental Traumatology 2013
Gabriel Krastl Nikola Allgayer Patrik Lenherr Andreas Filippi Pankaj Taneja Roland Weiger

It is common knowledge that materials used in endodontics may cause discoloration and thus impair the aesthetic outcome of the treated tooth. The purpose of this review is to summarise the existing knowledge on the discoloration potential of materials used for endodontic procedures. A comprehensive literature search covering the period from 1966 to 2011 was conducted on Pubmed and the Cochrane ...

Journal: :Denta 2022

Background: The prevalence of tooth extraction was 7.29% according to RISKESDAS 2018. Post-tooth will cause injury and bone resorption. Scaffold material combination hydroxyapatite gypsum puger (HAGP) aloe vera (AV) can be used for preservation socket. Objective: To analyze fibroblast type 1 collagen cells in the socket after being induction by a scaffold vera. Materials Methods: Making vera, d...

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