CDC Dental Materials & Technology Flashcards
6 cards from real CDC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CDC Dental Materials & Technology flashcards as text
Which restorative material both releases fluoride over time and chemically bonds to tooth structure through ion exchange?
Answer: Glass ionomer cement
Glass ionomer cement releases fluoride ions that help prevent secondary caries and forms a chemical adhesive bond to enamel and dentin through ion exchange.
What is the primary function of a dental bonding (adhesive) agent?
Answer: To create micromechanical and chemical retention between composite resin and tooth structure
A dental bonding agent infiltrates the micro-porosities created by acid etching and forms both micromechanical retention in enamel and a hybrid layer in dentin, bonding composite resin to the tooth.
What property of dental materials does the Vickers Hardness Number (VHN) measure?
Answer: Surface resistance to indentation, correlating with wear resistance
The Vickers Hardness Number quantifies a material's resistance to surface indentation by a diamond pyramid indenter, which correlates with its abrasion and wear behavior.
Which implant design is the most widely used in contemporary implant dentistry?
Answer: Endosseous (root-form) implant
Endosseous root-form implants are placed directly into the jawbone and have become the dominant design due to high long-term success rates and favorable biomechanical integration.
How is the term 'osseointegration' best defined in dental implantology?
Answer: The direct structural and functional bond between living bone and the surface of a load-bearing implant
Osseointegration, as defined by Brånemark, is the direct structural and functional connection between organized living bone and the surface of a load-bearing endosseous implant.
Which ceramic material is preferred for posterior crowns and implant-supported restorations due to its exceptional flexural strength?
Answer: Zirconia (zirconium oxide)
Zirconia's flexural strength exceeding 900 MPa makes it the material of choice for high-stress posterior restorations and implant-supported prostheses.