The document defines dental biomaterials as materials used in dentistry and how they interact with the oral environment. It notes that the mouth provides an aggressive environment for materials, with wetness, acids, forces, temperature changes, and introduced objects. Ideal dental materials would be biocompatible, mechanically stable, resistant to corrosion or chemicals, dimensionally stable, aesthetically pleasing, easy to manipulate, adhesive to tissues, tasteless, odorless, cleanable, reliable, and affordable. Major organizations like the American Dental Association regulate dental materials and specifications. Dental materials are classified into groups like impression materials, polymeric materials, restorative materials, denture bases, gypsum products, and investments.

3. DefinitionDefinition
The science of dentalThe science of dental
biomaterial is concerned withbiomaterial is concerned with
the study of the compositionthe study of the composition
and properties of dentaland properties of dental
materials and the way in whichmaterials and the way in which
they interact with thethey interact with the
environment in which they areenvironment in which they are
placed.placed.

4. History of Dental MaterialsHistory of Dental Materials

5. The selection of materials for
any given application can thus
be undertaken with confidence
and sound judgment and on
scientific bases.
Goals for Studying Dental MaterialsGoals for Studying Dental Materials

6. Oral EnvironmentOral Environment
The mouth provides an aggressive
environment for materials. It is
characterized by
 wetness,
the presence of acids,
high grinding and impact forces,
rapid change in temperature
and the frequent introduction of foreign
objects of different chemistries.

7. Characteristics of Ideal DentalCharacteristics of Ideal Dental
MaterialMaterial
 The materials to be used in the mouth should
have the following characteristics:
 Biocompatible (non irritant or toxic to the
oral tissues.
 Mechanically stable and durable.
 Resistant to tarnish, corrosion and
chemicals.
 Dimensionally stable.

8. Characteristics of Ideal DentalCharacteristics of Ideal Dental
MaterialMaterial
 Good esthetics.Good esthetics.
 Easy to manipulate.Easy to manipulate.
 Adhesive to tissues.Adhesive to tissues.
 Tasteless and odorless.Tasteless and odorless.
 Cleanable and reliableCleanable and reliable ..
 Of low cost or within the patient’sOf low cost or within the patient’s
budgetbudget

9. Organizations Involved In MaintainingOrganizations Involved In Maintaining
Quality of Dental MaterialsQuality of Dental Materials
 Among the well known dental organizationsAmong the well known dental organizations
that regulate the practice of dentistry are thethat regulate the practice of dentistry are the
American Dental Association (ADA), BritishAmerican Dental Association (ADA), British
Dental Association, and the FDI (InternationalDental Association, and the FDI (International
Dental Federation)Dental Federation)
 'The American Dental Association'The American Dental Association
specifications for dental materials isspecifications for dental materials is
considered the major referance for theconsidered the major referance for the
material acceptance in the internationalmaterial acceptance in the international
dental market.dental market.

10. Classification of Materials Used In DentistryClassification of Materials Used In Dentistry
 Impression materials
 Polymeric materials
 Metallic and non metallic restorative dental
materials
 Denture base materials
 Gypsum products
 Investment materials
 etcetc