نتایج جستجو برای: tooth staining
تعداد نتایج: 164699 فیلتر نتایج به سال:
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...
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...
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 ...
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...
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...
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...
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...
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 ...
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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