نتایج جستجو برای: characterization of human teeth

تعداد نتایج: 21323624  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم پایه 1392

در این تحقیق روشی جهت سنتز یک سری از کمپلکس های پلاتین (ii) حاوی لیگاند های دهنده ی فسفری شامل فسفیت و فسفین ارائه شده است. واکنش پیش ماده ی پلاتین (ii)،trans/cis- [ptcl2(sme2)2] ، با 2 اکی مولار از لیگاند p(oph)3در حلال بنزن کمپلکس1، cis-[ptcl2(p(oph)3)2] را تولید می نماید. جهت سنتز کمپلکس سایکلو متال فسفیتی، کمپلکس 1 با 1 اکی والان واکنشگر ptcl2 در حلال زایلن در شرایط رفلاکس زیر گاز آرگون م...

ژورنال: مجله دندانپزشکی 2013
آذری, عباس , طباطبایی قمشه, الهام , محمدی بصیر, مهشید , ملک حسینی, زهرا , وحدتی‌فر, مجید ,

Background and Aims: Endodontically treated teeth are prone to fracture because they loose a big amount of their structure. The treatment plan of those teeth is completed when they are rehabilitated with a strong and functional restoration. The purpose of this study was to evaluate the fracture resistance of endodontically treated teeth restored with amalgam cuspal coverage in comparison with o...

Solmaz Pourgonabadi Zahra Tayarani-Najaran

Stem cell-based therapy has great potential in treating health conditions including cardiovascular, autoimmune, type I diabetes, neurodegenerative and bone and cartilage diseases also in spinal cord injuries, malformations and cancer. In addition to their potential use to treat systemic diseases, stem cell-based therapy also provides a powerful tool to treat oral and dental diseases such as cra...

Journal: :journal of dentistry, tehran university of medical sciences 0
behnam bolhari somayyeh dehghan mohammad reza sharifian abbas bahador salma pirmoazen

objectives: the aim of this study was to evaluate the effect of gutta percha/ah26 and resilon/realseal se on residual antimicrobial activity of chlorhexidine (chx) in human root dentin and suggest the best filling material when chx is used as final irrigant. materials and methods: one-hundred and forty-four single-rooted human teeth were selected for this study. canals were instrumented to the ...

Journal: :Journal of dental research 1967
D S Strachan R Rapp J K Avery

Esterase activity of the dental pulp has been iernonstrated by histochemical technics on tissue sections by Burstone (Calcification in Biological Systeins, 1960, p. 232) and by Yoshiki (Butt. Tokyo Dent. Coll., 3:14-28, 1962). Aside from the localization of cholinesterases in the human dental pulp by Avery and Rapp (Stain Technol., 33:31-7, 1958) and by Ten Cute and Shelton (Arch. Oral Biol., 1...

Fatemeh Rezaee Horieh Moosavi, Lila Vaziri Omid Rajabi

BACKGROUND AND AIM: The aim of this study was to evaluate the effectiveness of different whitening toothpastes, focusing on the experimental ozonated toothpaste. MATERIALS AND METHODS: This laboratory study included a sample of 48 sound human molar teeth. Teeth were randomly assigned into four groups according to toothpaste treatment to be evaluated objectively (colorimetric method) and subject...

Journal: :iranian journal of microbiology 0
kazem ashofteh endodontic department, school of dentistry, tehran university of medical sciences, tehran, iran. khosrow sohrabi laser research center of dentistry, school of dentistry, tehran university of medical sciences, tehran, iran. kaveh iranparvar laser research center of dentistry, school of dentistry, tehran university of medical sciences, tehran, iran. nasim chiniforush laser research center of dentistry, school of dentistry, tehran university of medical sciences, tehran, iran.

introduction: bacteria are the primary etiology of pulpal and periradicular pathosis. in endodontically treated teeth with persistent infections only one or a few bacterial species are present of which the most important is enterococcus faecalis. the aim of this study was to compare antibacterial efficacy of canal disinfectants including 5.25% sodium hypochlorite, 2% chlorhexidine, mtad (a mixt...

A Eskandari Zadeh M Ebrahimi

Aim: This study was done to evaluate the rate of microleakage in class V amalgam restorations in which the dental bonding agent (DBA) Excite was used as a sealer beneath the restorations. Methods: four amalgam restorative materials with commercial names of Dentam, Cinalux, Tytin and SDI (GS-80) were used. Seventy sound human premolars were selected and randomly divided into 4 groups of 15 teeth...

Journal: :Modern approaches in dentistry and oral health care 2022

Composite resin has produced as an esthetic material around since the 1960s. To attain that composite matches surrounding natural teeth, shade matching is a very important process. Human teeth show variety of colorations depending on age, race, and other factors.

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