نتایج جستجو برای: bone thickness

تعداد نتایج: 408475  

2017
Kanthanat Chatvaratthana Sita Thaworanunta Dutmanee Seriwatanachai Natthamet Wongsirichat

BACKGROUND/PURPOSE Resonance frequency analysis (RFA) is clinically used in dentistry to access the stiffness of dental implants in surrounding bone. However, the clear advantages and disadvantages of this method are still inconclusive. The aim of this study was to investigate and compare implant stability quotient (ISQ) values obtained from RFA with parameters obtained from a cone beam compute...

2017
Alexander Gröbe Jan Semmusch Maximilian Schöllchen Henning Hanken Michael Hahn Wolfgang Eichhorn Gerhard Schön Ole Jung Jamal M Stein Aline Reitmeier Max Heiland Ralf Smeets Clarissa Precht

PURPOSE The aim of this animal study was the determination of accuracy of bone measurements in CBCT (cone-beam computed tomography) in close proximity to titanium implants. MATERIAL AND METHODS Titanium implants were inserted in eight Göttingen minipigs. 60 implants were evaluated histologically in ground section specimen and radiologically in CBCT in regard to thickness of the buccal bone. W...

2016
Nasrin Esfahanizadeh Niloufar Daneshparvar Farinaz Askarpour Nasrin Akhoundi Mehrdad Panjnoush

OBJECTIVES The purpose of this study was to determine buccal bone and soft tissue thicknesses and their correlation in the maxillary anterior region using cone beam computed tomography (CBCT). MATERIALS AND METHODS In this cross sectional study, 330 sound maxillary incisors in 60 patients with a mean age of 37.5 years were assessed by CBCT scans. For better visualization of soft tissue, patie...

2012
Heung-Joong Kim Sun-Kyoung Yu Myoung-Hwa Lee Hoon-Jae Lee Hee-Jung Kim Chae-Heon Chung

PURPOSE The cortical bone thickness on the anterior region is important for achieving implant stability. The purpose of this study was to examine the thickness of the cortical and cancellous bones on the anterior region of the maxilla and mandible. MATERIALS AND METHODS Twenty-five cadaver heads were used (16 male and 9 female; mean death age, 56.7 years). After the long axis of alveolar proc...

Journal: :Quantitative imaging in medicine and surgery 2015
Julio Carballido-Gamio Serena Bonaretti Isra Saeed Roy Harnish Robert Recker Andrew J Burghardt Joyce H Keyak Tamara Harris Sundeep Khosla Thomas F Lang

BACKGROUND Quantitative computed tomography (QCT) imaging is the basis for multiple assessments of bone quality in the proximal femur, including volumetric bone mineral density (vBMD), tissue volume, estimation of bone strength using finite element modeling (FEM), cortical bone thickness, and computational-anatomy-based morphometry assessments. METHODS Here, we present an automatic framework ...

2015
Masume Johari Farzaneh Kaviani Arman Saeedi

INTRODUCTION Orthodontic mini-implants have been incorporated into orthodontic treatment modalities. Adequate bone at mini-implant placement site can influence the success or failure of anchorage. The present study was to determine the thickness of cortical bone in the maxillary mid-palatal area at predetermined points for the placement of orthodontic mini-implants using Cone Beam CT technique ...

2015
Kirsten W Slagter Gerry M Raghoebar Arjan Vissink Henny J A Meijer

BACKGROUND Sufficient buccal bone is important for optimal esthetic results of implant treatment in the anterior region. It can be measured with cone beam computed tomography (CBCT), but background scattering and problems with standardization of the measurements are encountered. The aim was to develop a method for reliable, reproducible measurements on CBCTs. METHODS Using a new method, bucca...

Journal: :journal of dentistry, tehran university of medical sciences 0
ar rokn dental implant research center, school of dentistry, tehran university of medical sciences, tehran, iran. n moslemi b eslami h khandagh abadi m paknejad

both anorganic bovine bone (abb) and β-tricalcium phosphate (β-tcp) are used in clinical practice as bone substitute materials, but there is limited data comparing these two materials in standardized defects. the aim of this study was to histologically evaluate the effectiveness of abb and β-tcp in the healing of experimentally induced bone defects.eighteen bone defects were created on the calv...

Journal: :Journal of biomechanical engineering 2004
J S Binette M Garon P Savard M D McKee M D Buschmann

A tetrapolar method to measure electrical conductivity of cartilage and bone, and to estimate the thickness of articular cartilage attached to bone, was developed. We determined the electrical conductivity of humeral head bovine articular cartilage and subchondral bone from a 1- to 2-year-old steer to be 1.14+/-0.11 S/m (mean+/-sd, n =11) and 0.306+/-0.034 S/m, (mean+/-sd, n =3), respectively. ...

2014
Sang-Ho Jun Jin-Soo Ahn Jae-Il Lee Kyo-Jin Ahn Pil-Young Yun Young-Kyun Kim

PURPOSE The purpose of this prospective study was to evaluate the effectiveness of newly developed autogenous tooth bone graft material (AutoBT)application for sinus bone graft procedure. MATERIALS AND METHODS The patients with less than 5.0 mm of residual bone height in maxillary posterior area were enrolled. For the sinus bone graft procedure, Bio-Oss was grafted in control group and AutoBT...

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