Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
44 Cards in this Set
- Front
- Back
|
Dental materials play an important role in what? (2) |
Goal of disease prevention Therapeutic care |
|
|
What are the 4 advantages to understanding dental materials |
Behavior of dental materials Handle materials correctly Identifying dental materials Being knowledgable |
|
|
What are some factors that restrict the use of dental materials in the harsh environment known as the oral cavity (5) |
Biting forces Biocompatability Degradtion (corrosion, caries) Esthetic demands (what the patient wants) Temperature changes |
|
|
In the 1700s what was denistry used for |
Esthetic use only, not function |
|
|
What happended in the 1800s (2) |
Denistry is a scienfically based displine Amalgams and porcelain became common |
|
|
What happened in the 20th century? (3) |
Dental materials science is its own displine Precise casting techniques were developed Polymers, composites and alloys used in a wide range |
|
|
What happened in the 21st century |
New types of ceramics Evolution of the discipline is at a rapid pace |
|
|
What are the 3 standards for dental materials |
ANSI ( American National Standards Institute) ADA ( American Dental Association) Council on Scientific Affairs |
|
|
What does ANSI do? |
publishing and administering various products from industries in the U.S. |
|
|
What does the ADA do? |
represents the industry of dentistry |
|
|
What does the Council of Scientific Affairs do? |
Entity of the ADA that evualuates dental drugs, materials, instruments, and equipment |
|
|
ADA seal of Acceptance is awarded for how long |
3 years |
|
|
Is the ADA seal of acceptace required to market a product |
NO |
|
|
The Medical Device Amendment of 1976 has how many classes |
3 |
|
|
What is class I Name an example |
The least regulated Prophy paste/ tooth brushes |
|
|
What is Class II What are Examples |
FDA approved (showing equivalence to products currently in use ) Composites and Amalgams |
|
|
What is Class III Name an example |
Most regulated/ require pre-market approval Clinical data must be submitted to FDA prior to selling Bone graft materials |
|
|
Define restorative material |
replace lost oral tissue |
|
|
Define Esthetic material |
tooth colored |
|
|
Define fillings |
Restorations that replace lost tooth structure to decay |
|
|
Inlay and Onlay define |
made outside of the mouth (dental laboratory) do not have undercuts Cemented in place |
|
|
How does an onlay differ from an inlay |
restores more tooth structure typically restoring a cusp and sometimes the majority of a crown
|
|
|
Define Crown |
restore teeth when a substantial amount of tooth structure is missing Encircle and support the remaining tooth structure |
|
|
What does a bridge do |
Replaces a lost tooth or teeth |
|
|
What is an abutment |
Part of a bridge that is supported by an actual tooth at the end of each bridge |
|
|
Each abutment tooth is prepared and then restored with a crown called a |
Retainer |
|
|
The missing tooth in a bridge is replaced with what |
Pontic |
|
|
A Impression is known as a positive or negative reproduction |
Negative |
|
|
What is a cast? |
If a restoration is constructed on the replica its called a cast |
|
|
What is a study cast/diognostic cast? |
if the resulting replica is used to study the size and position of the oral tissue. |
|
|
What are different cements used? (3) |
Luting Bases Liner |
|
|
What is Luting? |
Same as gluing used for crowns, inlays and Onlays |
|
|
What are bases? |
Thermal insulation and form of added strength |
|
|
What is a Liner |
Protection from chemical irritation |
|
|
When is a temporary restoration used? |
When the dentist is unsure of the best treatment for a patient or a particular tooth |
|
|
What are types of preventative materials used |
pit and fissure sealants mouthguards Fluoride trays |
|
|
How does polishing compounds work? |
Use of a rubber cup with an abrasive agent moving an abrasive over the surface of an object to remove a thin layer of material |
|
|
What does direct restorative materials mean? |
Constructed directly in the oral cavity |
|
|
What are examples of direct restorative material |
Amalgam Composite Glass ionomers |
|
|
What are indirect restorative materials |
Are made in labs and outside of the patients mouth |
|
|
What are some indirect restorative materials (3) |
Gold crowns/ Inlays Ceramics (Porcelain crown) Pink portion of denture |
|
|
How many classes of dental caries are there |
six |
|
|
What is class I What is Class II WHat is Class III |
Pits and fissures only Interproximal of posterior teeth Interproximal of anteiror teeth |
|
|
What is Class IV What is Class V What is Class VI |
Incisal angle interproximal + Incisal edge involvement Cervical involvement Cusp tip or incisal edge |
