Topik Exam 1

Dental Materials Science is a discipline that studies materials used in dentistry. What is the role of dental materials science in clinical practice?

• Provides knowledge about material structure

• Provides knowledge about proper material selection and its function in restoring lost hard dental tissues

• Provides knowledge about material biocompatibility

• Provides knowledge about restoring dental function

Answer explanation

The use of dental materials may cause side effects. What is another term for these effects?

• Systemic toxicity

• Local reaction

• Allergic reaction

• Adverse effects

• Toxicity

Answer explanation

A female patient came to the dentist complaining that her metal dental filling had changed color. What process is occurring in this condition?

• Solubility

• Erosion

• Tarnish

• Leaching

• Crevice corrosion

Answer explanation

A 23-year-old female visited the Conservative Dentistry Clinic at RSGM Unhas with a complaint of a cavity in her upper right front tooth. The dentist planned to restore it using composite resin. What is the appropriate activation system for the composite resin in this case?

• Heat-cured

• Chemical-cured

• Self-cured

• Light-cured

• Dual-cured

Answer explanation

What type of light curing unit is currently widely used?

• Halogen light cured

• UV light cured

• LED

• Argon laser curing

• Plasma arc curing

Answer explanation

A 23-year-old female visited the Conservative Dentistry Clinic at RSGM Unhas with a complaint of a cavity in her upper right front tooth. The dentist plans to use a composite resin with an etch-and-rinse adhesive system. What etching agent is used in this adhesive system?

• 10% Oxalic acid

• 10% Polyacrylic acid

• 37% Phosphoric acid

• 37% Ascorbic acid

• 10% Acetic acid

Answer explanation

A 20-year-old male patient came to RSGMP Unhas with a complaint of a dislodged filling on his lower left posterior tooth (tooth 36), which had been placed about a year earlier. Clinical examination revealed caries on tooth 36 with a thin pulp roof. The dentist decided to restore tooth 36 using an indirect technique requiring a liner as pulp protection. What is the appropriate liner material in this case?

• Glass ionomer cement type 1

• Glass ionomer cement type 2

• Glass ionomer cement type 3

• Resin cavity liners

• Resin-modified glass ionomer

Answer explanation

A woman wants to have a denture made of porcelain. Dental porcelain consists of powder containing feldspar. What is one of the advantages of feldspar?

• Easily flammable

• Easily melted

• Easily fused

• Easily boiled

• Easily compacted

Answer explanation

Nowadays, dental alloy is no longer used for restorations due to concerns about mercury toxicity. What technique has been developed to reduce this toxicity?

• Cold-welding alloy technique

• Low-copper amalgam

• New dental alloy

• High-copper amalgam

• Non-gamma dental amalgam

Answer explanation

Which of the following tools is used to scan teeth digitally?

• Panoramic X-ray

• Intraoral camera

• Dental handpiece

• Articulator

• CBCT

Answer explanation