نتایج جستجو برای: hard tissue

تعداد نتایج: 1053523  

Journal: :journal of lasers in medical sciences 0
sara ghadimi assistant professor of pediatric dentistry, laser research center of dentistry (lrcd), tehran university of medical sciences, tehran, iran nasim chiniforush laser research center of dentistry (lrcd), tehran university of medical sciences, tehran, iran stephane ayoub bouraima laser application in medical sciences research center, shahid beheshti university of medical sciences, tehran, iran maryam johari student of dentistry, tehran university of medical sciences, tehran, iran

the application of laser in dentistry is considered as a favorable technique for patients due to its many advantages compare to other current methods. one of the main goals in pediatric dentistry is to provide the treatment as comfortable as possible without any risks for the care. laser is being used in different pediatric dental conditions including caries detection, caries removal and cavity...

Journal: :journal of modern processes in manufacturing and production 2015
nahid hassanzadeh nemati shiva yasini maryam aryana

different methods have been evaluated for manufacturing the porous ti6al4v alloys according todecreasing stress shielding phenomenon and increasing mechanical compatibility between themetallic components and the host tissue. for this purpose, in this work ti6al4v alloy chips werepressed under 400 mpa pressure and then samples were categorized and heated into two groups at1000 and 1150℃ under a ...

Journal: :journal of dental research, dental clinics, dental prospects 0
naser asl aminabadi ensiyeh maljaei leila erfanparast amir ala aghbali hamed hamishehkar ebrahim najafpour

background and aims. the aim of present study was to investigate pulp-dentin complex reactions following direct pulp capping (dpc) with calcium hydroxide [ca(oh)2] and simvastatin as pulp-capping materials in the primary human molars. materials and methods. 120 primary molar teeth which had to be extracted for orthodontic reasons were randomly allocated into four groups. group ι as a control, u...

Journal: :international journal of advanced design and manufacturing technology 0
kasra karbaschi m.sc of mechanical engineering – applied design

3d imagination of human's organs has become feasible by digital image processing techniques and algorithms via ct or mri images in recent years. in this study, a new method for reverse engineering and biomodelling of hard tissues by catia cloud points' concept has been considered. comparing with the current softwares (e.g. biobuild or mimics) has shown the new method's easiness of implementing ...

Journal: :THE JOURNAL OF THE STOMATOLOGICAL SOCIETY,JAPAN 1957

Journal: :British Dental Journal 2003

Journal: :journal of dentistry, tehran university of medical sciences 0
tahereh hosseinzadeh-nik armin eftekhari atefe saffar shahroudi mahammad javad kharrazifard

objectives: this study was designed to assess the changes of the mandible of patients who underwent orthodontic treatment with or without extraction of four premolars. materials and methods: eighteen class i bimaxillary protrusion patients treated with extraction of four first premolars and retraction of anterior teeth and 18 class i non-extraction patients with a mean age of 16.38±0.4 years we...

2013
Joseph D. Bronzino

The use of biomaterials to restore the function of traumatized or degenerated connective tissues and thus improve the quality of life of a patient has become widespread. In the past, implants were designed with insufficient cognizance of biomechanics. Accordingly, the clinical results were not very encouraging. An upsurge of research activities into the mechanics of joints and biomaterials has ...

Journal: :dental research journal 0
amin shirvani saeid sadeghian safieh abbasi

background: this was a retrospective cephalometric study to develop a more precise estimation of soft tissue changes related to underlying tooth movment than simple relatioship betweenhard and soft tissues. materials and methods: the lateral cephalograms of 61 adult patients undergoing orthodontic treatment (31 = premolar extraction, 31 = nonextraction) were obtained, scanned and digitized befo...

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