Dental Materials

  • Uploaded by: Rosette Go
  • 0
  • 0
  • June 2020
  • PDF

This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA


Overview

Download & View Dental Materials as PDF for free.

More details

  • Words: 582
  • Pages: 2
DENTAL MATERIALS •

A science that deals with the study of physical and chemical properties, manipulation, uses and/or application of the various materials in the dental practice



MANIPULATION – maximize the efficiency of the material



COMPOSITION – physical or chemical component of a material



PROPER USES & APPLICATION – correct utilization of a material’s maximum efficiency

BRANCHES OF DENTISTRY ASSOCIATED WITH THE SUBJECT •



RESTORATIVE DENTISTRY o

Science that deals with the prevention and treatment of a lost part of a tooth.

o

Deals with the restoration of original function and color of natural teeth

PROSTHODONTICS o

Science that deals with the replacement of function and aesthetics

o

3 types

3 TYPES OF MATERIALS •

PREVENTIVE MATERIALS o





REMOVABLE PARTIAL DENTURE – few teeth are present



COMPLETE DENTURE – whole arch (may be upper, lower or both)

Silicate, GIC, composites, metallic inlays

Impression materials, casts, waxes



OBJECTIVES OF THE SUBJECT •

To know the proper usage of dental materials



To know the physical and chemical properties of dental materials



To know the proper manipulation of materials in dental profession



To stimulate further research so we can further improve the quality of the material



To introduce the students to the materials used in dentistry





AUXILLARY MATERIALS o



FIXED PARTIAL DENTURE – replacement of a single tooth or a segment of teeth

Sealants, liners, bases

RESTORATIVE MATERIALS o



To bridge the gap between the knowledge from chemistry, physics, etc. with dental materials To provide certain criteria on selection of facts and propaganda

ORTHODONTICS o

Science that studies the prevention and treatment of malocclusion

o

Space maintainers

TERMINOLOGIES:



STRESS o

Internal force between the body which tends to protect the body from the outside force

o

The force per unit area in a body which resists an external force

o

Classified according to direction:

GOAL OF DENTISTRY •

Maintain or improve the quality of life of dental patients by preventing disease, relieving pain, improving mastication efficiency, enhancing speech and improving the general appearance of patients

*All substances are poisonous. The correct dosage differentiates poisons from remedies.



COMPRESSIVE STRESS – a force under a load that tends to shorten or flatten the body



TENSILE – force that can resist elongation or stretching of body



SHEAR – force that can resist a twisting motion: sliding of one portion of a body over another

 •



STRAIN o

Kind of force which is usually a deformation due to stress

o

A change in dimension

ELASTIC LIMIT o





o

Being difficult to break

o

energy required to fracture a material

BRITTLENESS

The ability of a material to withstand permanent deformation under a tensile load without rupture

MALLEABILITY o



The fracture of a material at or near its proportional limit

DUCTILITY o



Maximum force required to fracture a body

TOUGHNESS

o



Amount of energy absorbed by a structure when it is stressed not to exceed its proportional limit

STRENGTH o



Ability of the material to be twisted or contoured in any desired form without breaking

RESILIENCE/SPRINGINESS o



The greatest stress to which a material can be subjected to such that it will return to its original dimension when the force are released

FLEXIBILITY o



COMPLEX – combination of compressive, tensile and shear

Under a compressive load

HARDNESS o

Property of a material to resist scratching or indentation

Rosette Go 111108 

Related Documents

Dental Materials
June 2020 12
Dental Materials F6
June 2020 10
Dental Materials M4
June 2020 13
Dental Materials F9
June 2020 22
Dental Materials 6
June 2020 3
Dental Materials M6
June 2020 2

More Documents from "Rosette Go"

Dental Materials F9
June 2020 22
June 2020 20
Pulp Cavity
June 2020 15
June 2020 18
June 2020 16