Summary
Samenvatting Philip's of science dental materials
- Course
- Institution
- Book
Beknopte samenvatting van de belangrijkste dingen uit het boek.
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
Seller
Follow
lindavd1011
Reviews received
Content preview
Philips’s science of dental materialsHoofdstuk 2
Combination of primary bonds bestaat ook.
- Calciumsulfaat
Hydrogen bond
- Covalent
, Hoofdstuk 3
Thermal conductivity (geleidbaarheid) = k
- Hoog: conducturs
- Laag: insulators
Thermal conductivities:
Polymers < ceramics < metals
Thermal diffusity: h
measure of the speed with which a temperature change will spread through an object when
one surface is heated.
- Material with high density and high specific heat will have a low thermal diffusity
For tandheelkunde
thermal diffusity more imporant than thermal conductivity
Thermal expansion = a (alfa)
When material undergo a temperature increase, the virbrational motion of atoms and mean
interatomic (bond) distances increase
increase in volume (expansion)
delta L
=a
L x deltaT
L= the original lengts
Delta L= change in length
Delta T= temperature change
Electrical properties
Corrosion: electrochemical process and is dependent on the ability to conduct electrical
current
- Free electrons in metals
- Via ions in solution
Most important electrochemical effects
- Toxic
- Allergic responses
In most cases: corrsosion is undesirable
The oral environment is highly conducive to electrochemical action
Tarnish: aanslag(mat)
Tarnish often occurs from the formation of deposits on the surface of a restauration
- Bijv of the formation of thin films (oxides, sulfides, chlorides)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lindavd1011. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $5.72. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
57727 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now