نتایج جستجو برای: diamond bur

تعداد نتایج: 21800  

2008
Ana Maria Costa Lilian Marly de Paula Ana Cristina Barreto Bezerra

The purpose of this study was to evaluate the use of a laser fluorescence device for detection of occlusal caries in permanent teeth. One hundred and ninety-nine non-cavitated teeth from 26 patients aged 10 to 13 years were selected. After dental prophylaxis, two previously calibrated dentists examined the teeth. Visual inspection, radiographic examination and laser measurements were performed ...

Journal: :Dental Materials Journal 2021

This study evaluated the effects of remaining dentin thickness (RDT), different smear layers, and aging on microtensile bond strength (µTBS) universal adhesives to when applied in self-etch mode. Ninety-six human third molars were randomly allocated 12 groups (n=8) based adhesives: ClearfilTM SE Bond 2 (SE, control), Universal (CU) ScotchBondTM Adhesive (SB); layers: prepared either with 600-gr...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
ha. shafiee sh. mohebi n. ameli r. omidvar ar. akbarzadeh

objective: increased enamel surface roughness following orthodontic bracket debonding leads to increased plaque accumulation and enamel decalcification. therefore, different methods are employed to achieve smoother enamel surfaces after bracket debonding. this study compared enamel surface roughness following orthodontic bracket debonding and composite resin removal using white stone and tungst...

2014
Joanna Janiszewska-Olszowska Tomasz Szatkiewicz Robert Tomkowski Katarzyna Tandecka Katarzyna Grocholewicz

After orthodontic treatment, brackets are debonded and residual adhesive is removed, causing iatrogenic enamel damage. The aim of this study was to review the methods of orthodontic adhesive removal, find clear evidence, and provide a rationale for this procedure. A literature search was performed in PubMed, Dentistry and Oral Sciences, Scopus, Cochrane, Google, and Google Scholar using keyword...

2017
Rudys Rodolfo de Jesus Tavarez Lauber Jose dos Santos Almeida Júnior Tayanne Christine Gomes Guará Izabella Santos Ribeiro Etevaldo Matos Maia Filho Leily Macedo Firoozmand

OBJECTIVES The purpose of this study was to evaluate the influence of surface treatment and different types of composite resin on the microshear bond strength of repairs. MATERIALS AND METHODS Seventy-two specimens (n=72) were prepared using a nanoparticle resin and stored in artificial saliva at 37 ± 1°C for 24 h. After this period, the specimens (n=24) were restored with microhybrid resin P...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Karen Zhou Wei Hung William Kuo Jeffrey Fillingham Jack F Greenblatt

Elongation by RNA polymerase II (RNAPII) is a finely regulated process in which many elongation factors contribute to gene regulation. Among these factors are the polymerase-associated factor (PAF) complex, which associates with RNAPII, and several cyclin-dependent kinases, including positive transcription elongation factor b (P-TEFb) in humans and BUR kinase (Bur1-Bur2) and C-terminal domain (...

Journal: :dental research journal 0
elham shadmehr sima kiaani parinaz mahdavian

dens invaginatus is a rare developmental anomaly of teeth with complex root canal system morphology. the present case describes a peg shape maxillary lateral incisor with dens invaginatus (oehlers type ii), necrotic pulp, and an associated large periradicular lesion. nonsurgical endodontic treatment was performed with the aim of removing the blind sac with diamond bur under the use of operating...

2012
Eugenia Koliniotou-Koumpia Pantelis Kouros Lazaros Zafiriadis Effimia Koumpia Pavlos Dionysopoulos Vassilis Karagiannis

OBJECTIVE The shear bond strength of adhesives applied to dentin was investigated after irradiation with an erbium-doped yttrium aluminum garnet (Er:YAG) laser. METHODS Superficial and deep dentin specimens from human molars were treated either with carbide bur or an Er:YAG laser. Two etch and rinse adhesives (Single Bond and XP Bond) and two self-etch adhesives (Prompt L-Pop and Xeno III) we...

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