نتایج جستجو برای: bonding

تعداد نتایج: 43811  

Mohammadi Bassir, Mahshid, Paryab, Mehrsa, Rezvani, Mohammadbagher,

The effect of antioxidant agents on shear bond strength of composite and bleached enamel Dr. M. Mohammadi Bassir * - Dr. MB. Rezvani * - Dr. M. Paryab ** *Assistant Professor of Operative Dentistry Dept., Faculty of Dentistry, Shahed University. **Resident of Pediatric Dentistry Dept., Faculty of Dentistry, Tehran University / Medical Sciences. Abstract Background and Aim: Several studies have ...

Journal: :مشاوره کاربردی 0
راضیه منصوری نژاد دانشجوی کارشناسی ارشد روانشناسی تربیتی دانشگاه شهید چمران اهواز ناصر بهروزی دانشیار گروه روانشناسی تربیتی دانشگاه شهید چمران اهواز منیجه شهنی ییلاق لاستاد گروه روانشناسی تربیتی دانشگاه شهید چمران اهواز

the aim of the present study was to examine the casual relationship of parental bonding with bullying in schools, mediated bypersonality characteristics and student-teacher relationship quality. 200 second-grade male high-school students in ahvaz were selected using multi-stage random sampling method. the data were collected by the parental bonding instrument (pbi), neo-personality inventory-re...

Bahman Seraj, Fatemeh Ghanaat, Hossein Bagheri, Saeedeh Mokhtari, Sara Ghadimi,

Background and Aim: One of the important factors in microleakage of fissure sealants is saliva contamination. Researchers believe that applying bonding agents can reduce the microleakage. The present study compared the microleakage of a fissure sealant contaminated with artificial saliva at different curing times with or without using a bonding agent. Materials and Methods: In this in-vitro ...

Journal: :journal of dentistry, tehran university of medical sciences 0
sh. kasraei associate professor, department of operative dentistry, school of dentistry, hamadan university of m z. khamverdi 2associate professor, dental research center, hamadan university of medical sciences, hamadan, iran

objective: optimal dentin bonding is not always obtained in clinical practice due to func-tional forces. these forces may provide stresses throughout the tooth and restorative sys-tem, which in turn may affect the adhesive bond. this experimental study evaluated the effect of load cycling on bond strength of self-etch systems. materials and methods: one third of the coronal portions of 48 intac...

Journal: :iranian journal of neonatology 0
mamak shariat department of pediatrics, maternal pediatric health specialist, institute of family health, maternal, fetal and neonatal health research center, vali asr hospital, imam khomeini hospital complex, tehran university of medical sciences (tums), tehran, iran nasrin abedinia clinical psychologist, institute of family health, maternal, fetal and neonatal health research center, vali asr hospital, iranian research centers of hiv/aids imam khomeini hospital complex, tehran university of medical sciences (tums), tehran, iran

abstract background: the emotional bond that a mother feels towards her infant is critical to their social, emotional, and cognitive development. this concept has a major influence on an infant’s future health, and growth, so the assessment of parental-fetal attachment and related factors is of great importance. this study aimed to examine the effect of psychological intervention on attachment ...

Journal: :journal of dental biomaterials 0
azrul hafiz abdul aziz orthodontic department, islamic sciences university of malaysia, kuala lumpur, malaysia

abstract statement of problem: the viscosity of orthodontics adhesive primers is crucial for stability and correct brackets ‘position during bond up. an excessive adhesive flow during brackets seating could change the brackets’ position. objectives: the main purpose of this study was to investigate the viscosity of four orthodontic adhesive primers in two different temperatures. materials and m...

Journal: :iranian chemical communication 2014
reza fazaeli mohammad solimannejad

density functional (dft) calculations at m05-2x/aug-cc-pvdz level were used to analyze the interactions between dimethyl sulfoxide (dmso) dimers. the structures obtained have been analyzed with the atoms in molecules (aims) and natural bond orbital (nbo) methodologies. four minima were located on the potential energy surface of the dimers. three types of interactions are observed, ch•••o, ch•••...

Journal: :Faraday discussions 2017
Lee Brammer

The role of the closing lecture in a Faraday Discussion is to summarise the contributions made to the Discussion over the course of the meeting and in so doing capture the main themes that have arisen. This article is based upon my Closing Remarks Lecture at the 203rd Faraday Discussion meeting on Halogen Bonding in Supramolecular and Solid State Chemistry, held in Ottawa, Canada, on 10-12th Ju...

Journal: :Bulletin of the Japan Institute of Metals 1989

ژورنال: مجله دندانپزشکی 2009
جعفرزاده کاشی, طاهره سادات, عرفان, محمد, نزادی نیاسر, الهیار,

Background and Aim: Evaluation of shear bond strength and microleakage of bonding agents is important as these properties play main roles in adhesion of composite to dental tissues. Microleakage results in bacterial penetration into dentin tubules and enamel surfaces and causes sensitivity and recurrent caries followed by destruction of composite filling. Insufficient shear bond strength result...

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