نتایج جستجو برای: start curing

تعداد نتایج: 103227  

ژورنال: مجله دندانپزشکی 2003
حسنی طباطبایی, معصومه , صفرچراتی, هنگامه , عطایی, محمد ,

Statement of Problem: Recently, investigators have presented new methods to reduce polymerization shrinkage of composite resin restorations. It is claimed that more powerful light cure systems associated with a change in radiation patterns, lead to improved mechanical properties and reduced microleakage. Purpose: The aim of the present study was to evaluate the effects of two curing systems, kn...

Introduction: The present study was performed to evaluate the effects of light-curing modes and shades of methacrylate and silorane-based composite resins on temperature rise during polymerization of composite resins. Materials &Methods: In this in vitro study, ninety composite samples with two types of composite resin - methacrylate-based and a low-shrinkage silorane-based were prepared, in...

Journal: :Dental materials journal 2014
Takako Yoshikawa Makoto Morigami Alireza Sadr Junji Tagami

This study aimed to evaluate the effects of the light curing method and resin composite composition on marginal sealing and resin composite adaptation to the cavity wall. Cylindrical cavities were prepared on the buccal or lingual cervical regions. The teeth were restored using Clearfil Liner Bond 2V adhesive system and filled with Clearfil Photo Bright or Palfique Estelite resin composite. The...

Journal: :Dental materials journal 2018
Takako Yoshikawa Alireza Sadr Junji Tagami

This study evaluated the effects of the light curing methods and resin composite composition on composite polymerization contraction behavior and resin composite adaptation to the cavity wall using μCT-3D visualization analysis and dye penetration test. Cylindrical cavities were restored using Clearfil tri-S Bond ND Quick adhesive and filled with Clearfil AP-X or Clearfil Photo Bright composite...

2017
Parul Mour Agarwal Sonali Taneja Mohit Kumar

Aim The aim of this study is to evaluate and to compare the effect of different light-curing modes and different liners on cuspal deflection in premolar teeth restored with bulk filled or incrementally filled composite measured at different time intervals. Materials and Methods The study was divided into two parts (Part 1-different curing modes, Part 2-different liner) each with sixty extract...

2018
Konda Karthik Roy Kanumuru Pavan Kumar Gijo John Sujatha Gopal Sooraparaju Surya Kumari Nujella Kyatham Sowmya

Aim The aim of this study is to compare and to evaluate effect of curing light and curing modes on the nanohybrid composite resins with conventional Bis-GMA and novel tricyclodecane (TCD) monomers. Methodology Two nanohybrid composites, IPS empress direct and charisma diamond were used in this study. Light-emitting diode (LED)-curing unit and quartz-tungsten-halogen (QTH)-curing unit which we...

2014
Takako Yoshikawa Junji Tagami

Purpose: This study aimed to evaluate the effects of light-curing method on the marginal seal and resin composite adaptation to the cavity wall, and the formation of enamel cracks around resin composite restorations. Materials and Methods: Cylindrical cavities were prepared on the buccal or lingual cervical region of human molars. The teeth were restored with Clearfil Liner Bond 2 V and filled ...

Journal: :Journal of clinical and diagnostic research : JCDR 2014
Anshu M Chandurkar Sandeep S Metgud Shaikh Shoeb Yakub Vaishali J Kalburge Basawaraj C Biradar

BACKGROUND The purpose of this study was to evaluate the effects of light intensity and curing cycles of QTH and LED lights on the microleakage of Class V composite restorations. MATERIALS AND METHODS Eighty freshly extracted human maxillary premolars were used for this study. Standardized Class V cavities were prepared and they were restored with microhybrid resin composite. According to the...

Journal: :Dental materials journal 2016
Takako Yoshikawa Makoto Morigami Alireza Sadr Junji Tagami

The aim of this study was the effects of different light curing methods on marginal sealing and resin composite adaptation to the cavity wall using the dye penetration test and environmental scanning electron microscope (SEM) observations. Cylindrical cavities were prepared on cervical regions. The teeth were restored with Clearfil Liner Bond 2 V adhesive and filled with Clearfil Photo Bright o...

Journal: :journal of dental biomaterials 0
sayed-mostafa mousavinasab dental materials research center and department of operative dentistry, school of dentistry, isfahan university of medical sciences, isfahan, iran mohammad atai department of polymer science, iran polymer and petrochemical institute, tehran, iran negar salehi department of oral medicine, school of dentistry, rafsanjan university of medical sciences, rafsanjan, iran arman salehi department of operative dentistry, school of dentistry, rafsanjan university of medical sciences, rafsanjan, iran

statement of problem: the degree of conversion depends on the material composition, light source properties, distance from light source, light intensity, curing time, and other factors such as shade and translucency. objectives: in the present study, we evaluated the effects of different light- curing modes and shades of methacrylate and silorane-based resin composites on the degree of conversi...

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