Restorative & Preventive Dental Procedures Flashcards
7 cards from real EFDA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Restorative & Preventive Dental Procedures flashcards as text
Which matrix system is most commonly used for Class II composite restorations in posterior teeth?
Answer: Sectional matrix system
Sectional matrix systems provide better contact point reproduction and contour for posterior composite restorations than circumferential matrices.
When placing a Class V glass ionomer restoration, what is the primary reason for conditioning the cavity preparation?
Answer: To remove the smear layer and enhance adhesion
Conditioning with polyacrylic acid removes the smear layer and activates the tooth surface for chemical bonding with glass ionomer.
A patient presents with a newly placed amalgam restoration that is high in occlusion. The FIRST step the EFDA should take is:
Answer: Use articulating paper to identify high spots
Articulating paper marks the premature contacts so the EFDA can identify and adjust the high spots under dentist supervision.
Which fluoride concentration is found in professionally applied fluoride varnish?
Answer: 5% NaF (2.26% F)
Professional fluoride varnish contains 5% sodium fluoride, delivering 22,600 ppm of fluoride to tooth surfaces.
During composite placement, the incremental layering technique is used primarily to:
Answer: Reduce polymerization shrinkage stress
Placing composite in 2 mm increments reduces the C-factor and minimizes polymerization shrinkage stress at the tooth-restoration interface.
Which instrument is used to remove excess composite material from the gingival margin before curing?
Answer: Composite placement instrument or IPC
A composite placement instrument (IPC) or similar plastic-tipped instrument shapes and removes excess uncured composite without contaminating it.
Pit and fissure sealants are most effective when applied to teeth that have fissures rated at which stage on the ICDAS scale?
Answer: ICDAS 0-1 (sound or initial enamel change)
Sealants are most effective as a preventive measure on sound or minimally affected enamel (ICDAS 0-1) before caries progression.