نتایج جستجو برای: isq

تعداد نتایج: 275  

2017
Toshie Nagayasu‐Tanaka Takenori Nozaki Koji Miki Keigo Sawada Masahiro Kitamura Shinya Murakami

OBJECTIVES The aim of this study was to examine the effect of basic fibroblast growth factor (FGF-2) on osseointegration of dental implants with low primary stability in a beagle dog model. MATERIALS AND METHODS Customized titanium implants that were designed to have low contact with the existing bone were installed into the edentulous mandible of beagle dogs. To degrade the primary stability...

2015
Nam-Ho Kim So-Hyoun Lee Jae-Jun Ryu Kyung-Hee Choi Jung-Bo Huh

This study was conducted to evaluate effects of rhBMP-2 applied at different concentrations to sandblasted and acid etched (SLA) implants on osseointegration and bone regeneration in a bone defect of beagle dogs as pilot study using split-mouth design. Methods. For experimental groups, SLA implants were coated with different concentrations of rhBMP-2 (0.1, 0.5, and 1 mg/mL). After assessment of...

Journal: :Clinical oral implants research 2012
Mariana Marquezan Amanda Osório Eduardo Sant'Anna Margareth Maria Souza Lucianne Maia

OBJECTIVE The aim of this systematic review was to investigate the influence of bone mineral density on the primary stability of dental implants. MATERIAL AND METHODS A search of health science databases (Cochrane Library, MEDLINE-PubMed, ISI Web of Knowledge, EMBASE, LILACS) and grey literature was performed, including papers published until January 2011. The main key words used were "bone d...

2015
Jun Yuan Li Edmond Ho Nang Pow Li Wu Zheng Li Ma Dora Lai Wan Kwong Lim Kwong Cheung

Radiotherapy may compromise the integration of implant and cause implant loss. Implant surface modifications have the possibility of promoting cell attachment, cell growth, and bone formation which ultimately enhance the osseointegration process. The present study aimed to investigate the effects of calcium phosphate nanocrystals on implant osseointegration in irradiated bone. Sixteen rabbits w...

Journal: :Medical engineering & physics 2013
Min-Chun Pan Han-Bo Zhuang Chin-Sung Chen Jer-Whey Wu Shyh-Yuan Lee

This study employed a noncontact resonance frequency (RF) detection technique that was developed by our group to evaluate the interfacial bone in in vitro implant-bone models. Based on our method, the implant-bone structure was excited by the acoustic energy of a loudspeaker, and its vibration response was acquired with a capacitance sensor. The spectral analysis was used to characterize the fi...

2017
Cagasan Pirpir Onur Yilmaz Celal Candirli Emre Balaban

BACKGROUND Growth factor-containing products have been reported to increase implant stability and accelerate osseointegration. Concentrated growth factor (CGF) can be used for this purpose with the growth factors it contains. The aim of this study is to assess the effect of CGF on implant stability and osseointegration. METHODS Twelve patients with maxillary anterior toothless were included i...

2012
Mariano Herrero-Climent Matteo Albertini Jose V. Rios-Santos Pedro Lázaro-Calvo Ana Fernández-Palacín Pedro Bullon

UNLABELLED Few studies assess repeatability and reproducibility in registers of resonance frequency analysis (a value of dental implant stability). OBJECTIVE Few studies assess repeatability and reproducibility in resonance frequency analyses (implant stability evaluation). This study is aimed at assessing reliability (repeatabilty and reproducibility) in the Osstell Mentor® system using the ...

Journal: :The International journal of oral & maxillofacial implants 2015
Jin Whan Lee Hai Bo Wen Suneel Battula Rama Akella Michael Collins Georgios E Romanos

PURPOSE This study evaluated the stability and histologic proof of osseoincorporation of Trabecular Metal (TM) dental implants, which feature a tantalum-based porous midsection. MATERIALS AND METHODS A total of 48 TM implants (test group) and Tapered Screw-Vent implants (control group) were immediately placed bilaterally into mandibular extraction sockets in dogs. Resonance frequency analysis...

2017
Miguel Stanley Filipa Calheiros Braga Beatriz Mota Jordao

PURPOSE To present the outcomes of immediately loaded single implants placed in the anterior maxilla. METHODS Over a 2-year period, all patients referred to a private clinic were considered for enrolment in this study. Inclusion criteria were single-tooth placement in postextraction sockets or healed sites of the anterior maxilla. All implants were immediately loaded and followed for a period...

Journal: :The journal of quality in education 2023

La recherche croise les données issues des travaux sur l’indice synthétique de la qualité systèmes éducatifs (ISQ) et ceux l’OCDE l’identification l’analyse mesures politique éducative prises par pays. Ce croisement permet, grâce à analyses régression multiple, dégager ensembles qui ont un impact, positif ou négatif, variations scores critères constitutifs l’ISQ entre 2015 2018. Ces constats so...

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