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CDT Complete Denture Fabrication Flashcards

6 cards from real CDT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 CDT Complete Denture Fabrication flashcards as text

  1. What is the post-dam (posterior palatal seal) in a maxillary complete denture?

    Answer: A slight pressure area at the vibrating line that creates a peripheral seal to enhance retention

    The post-dam is a shallow compressive groove placed at the junction of hard and soft palate (vibrating line) to create a border seal that improves suction retention.

  2. What does 'over-extension' of a complete denture flange cause clinically?

    Answer: Ulceration of the vestibular mucosa and dislodgement of the denture by muscle pull

    Over-extended flanges impinge on the vestibular sulcus and muscle attachments, causing sore spots and dislodging the denture during function.

  3. Why are porcelain denture teeth rarely used in modern complete denture fabrication?

    Answer: They are difficult to bond to acrylic and generate excessive wear on opposing natural teeth or restorations

    Porcelain teeth lack chemical bonding to the acrylic base, rely on mechanical retention, and can cause accelerated wear of opposing structures.

  4. What is an 'immediate denture' and what is a primary disadvantage of this prosthesis?

    Answer: A denture placed immediately after extraction; disadvantage is that post-extraction ridge resorption makes it loose within months

    Immediate dentures are placed at the time of extraction but require frequent relines or replacement as the ridge resorbs rapidly in the first 6–12 months.

  5. What is the purpose of a laboratory remount procedure after denture processing?

    Answer: To detect and correct processing-induced occlusal errors by remounting processed dentures on the articulator

    Acrylic processing can introduce small dimensional changes that shift the occlusion; laboratory remount allows selective grinding to restore accurate occlusal contacts.

  6. Which material is used to reline a complete denture when soft tissue is sore or when a temporary, resilient base is needed?

    Answer: Silicone-based or acrylic soft reline material

    Soft reline materials (silicone-based or plasticized acrylics) provide a cushioned, tissue-conditioned surface that reduces pressure on sore ridges.