Dental casting investment: A material consisting primarily of an allotrope of silica and a bonding agent. The bonding substance may be gypsum (for use in lower casting temperatures) or phosphates and silica (for use in higher casting temperatures). (GPT 8)
A comprehensive slideshow covering all the basics relating to dental materials and their physical properties. Based on standard text books - Phillips Science of Dental Materials (11th Edition).
all details about the chemistry of polymerization
Addition polymerization
Chemical Stages of polymerization
induction
propagation
chain transfer
termination
Inhibition of polymerization
Ring-opening polymerization,
Step growth/Condensation polymerization
Copolymerization
Acrylic resins
Methylmethacrylate
Polymethylmethacrylate{PMMA}
Multifunctional Methacrylate and Acrylate resins
Elastomeric Impression Materials by Dr Rashid HassanDr Rashid Hassan
A comprehensive lecture on Elaastomers by Dr Rashid Hassan covering all the aspects of all the elastomers used to record DeNRAL iMPRESSION.
For more lectures on Dental Materials Follow Dr Rashid Lectures on Dental Materials on Facebook (dmbydrrashid)
Impression materials /certified fixed orthodontic courses by Indian dental a...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Dental casting investment: A material consisting primarily of an allotrope of silica and a bonding agent. The bonding substance may be gypsum (for use in lower casting temperatures) or phosphates and silica (for use in higher casting temperatures). (GPT 8)
A comprehensive slideshow covering all the basics relating to dental materials and their physical properties. Based on standard text books - Phillips Science of Dental Materials (11th Edition).
all details about the chemistry of polymerization
Addition polymerization
Chemical Stages of polymerization
induction
propagation
chain transfer
termination
Inhibition of polymerization
Ring-opening polymerization,
Step growth/Condensation polymerization
Copolymerization
Acrylic resins
Methylmethacrylate
Polymethylmethacrylate{PMMA}
Multifunctional Methacrylate and Acrylate resins
Elastomeric Impression Materials by Dr Rashid HassanDr Rashid Hassan
A comprehensive lecture on Elaastomers by Dr Rashid Hassan covering all the aspects of all the elastomers used to record DeNRAL iMPRESSION.
For more lectures on Dental Materials Follow Dr Rashid Lectures on Dental Materials on Facebook (dmbydrrashid)
Impression materials /certified fixed orthodontic courses by Indian dental a...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Impressions in fixed partial dentures/certified fixed orthodontic courses by ...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
Impressions in fixed partial dentures/dental crown &bridge course by Indian d...Indian dental academy
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Deep Eutetic Solvents for Biomass Activation by Sauli Vuoti, Jaakko Hiltunen et al., VTT
ACel Programme Seminar June 5, 2015
http://fibic.fi/events/acel-program-seminar-jun-5-cellulose-reactivity-and-recycling-of-ionic-liquids
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
3. To make individual impressions
for the procedures of prosthetic restorations
Printing for fixed In total impressions
partial prints bridgework (totally or partially
edentulous patients)
For high
accuracy
and fidelity
of detail In
preparation
of single or
multiple
deposit
4. •foundation
Low molecular weight (4,000 approx.)
polysulfide Presence of reactive groups SH mercaptans in the polymer chain
•To give consistency.
Fill best known is titanium dioxide, zinc sulfide
FILLING and silica in proportion 12 to 50%
Lithopone is a white pigment mixture consisting of
zinc sulfide and barium sulfate
Using 3 types of accelerators:
Dioxide or lead peroxide (T rapidly reactivates and environment
THROTTLE
curing reaction is maintained for a longer than others.
Shortening occurs lead peroxide in the polymer chain by
oxidation of the terminal groups SH.
Hidroxiperóxido colorless organic t-butyl or amine activator, with
In order to remove the brown color of lead dioxide.
These compounds have little dimensional stability and contract by the
Evaporation of the volatile constituent of hidroxiperóxido.
Another type is the Cu hydroxide gives a blue-green is better
dimensional stability but may be more toxic than the PbO2 and its product
end is unstable.
5. To facilitate the polymerization of the poly sulfides, sulfur is added
as an advocate
SULFUR Which facilitates the chemical reaction
and stearic acid to assist the polymerization.
DIBUTYLPHTHALATE Is used as a plasticizer
6. Is made between the mercaptan or paste and lead dioxide or accelerator
To give a polysulfide
polysulfide Lead Dioxide polysulfide+ lead sulfide+ water
(base) (acelerador)
(material totalmente polimerizado)
7. Good dimensional stability
to make an impression.
Finish line is clearly visible.
No special equipment.
DISADVANTAGES
Single cell is required.
Not tolerate water in the furrows.
unpleasant odor
8. It is approx. Like 5-7 minutes hydrocolloids
WORKING TIME based on agar-agar and alginates than
The curing time is 8-13 minutes.
It can be modified by several methods:
Higher temperature accelerates the polymerization
CURING TIME Base-rate accelerator: less time basis
accelerates.
Adding a drop of water accelerates the polymerization mixture,
but it is more difficult to mix and monitor their effect.
Adding a drop of oleic acid slows time
polymerization
9.
10. In these materials, the base polymer is a
cyclic ether in terminal groups, imino groups
(triangles are similar to epoxy but with
nitrogen instead of oxygen in a vertex)
11. ▫Polyether based etilenoamina ring terminals.
▫ silica filler.
▫ A plasticizer ftalatode filled with glycol ether.
• Accelerator or catalyst or trigger:
▫ Thinner: Element to provide proper consistency to
the material. Is octyl phthalate and 5% methyl
cellulose.
12. –Flexibility of 3.3%
-Elastic Recovery 99%
-Contraction from 0 .2% 0.3% at 24 hrs
Special Considerations.
-Hydrophilic
13. The two pastes are colors that contrast each other,
which facilitates efficient mixing.
It is important that the print is placed in position and
kept still to avoid tensions that can lead to distortion.
The polymerization is completed in 5 minutes.
14. ▫It comes in a single consistency.
▫ low acceptance is coming in a single consistency.
▫ Its use should only cover up to 4 teeth and these must
not have periodontal disease and being too rigid cause
discomfort to the withdrawal. This aimed at
elaboration of fixed prosthetics (crowns and bridges).