Question 324 · LDEK · Complete dentures
In toothless patients, during positioning of anterior teeth in upper denture, CPC line should be taken into consideration, among other things. According to principle of relationship between the position of upper anterior teeth and CPC line:
- A. distance between lingual surfaces of medial incisors and the centre of incisive papilla should be identical with the distance between lingual surface of canine tooth and the end of first palatine fold (ruga).
- B. lingual surfaces of medial incisors should be located approx. 8 mm from the centre of incisive papilla and distance between canine cusp and the end of first palatine fold (ruga) should be approx. 10 mm.
- C. labial surfaces of medial incisors should be located approx. 10 mm from the centre of incisive papilla and distance between labial surface of canine tooth and the end of first palatine fold (ruga) should be approx. 8 mm.
- D. labial surfaces of medial incisors should be located approx. 8 mm from the centre of incisive papilla and distance between labial surface of canine tooth and the end of first palatine fold (ruga) should be approx. 10 mm.
- E. distance between labial surfaces of medial incisors and the centre of incisive papilla should be identical with the distance between labial surface of canine tooth and the end of first palatine fold (ruga).
Hint
Use the stable landmarks that survive tooth loss (incisive papilla, first palatal rugae) and recall which tooth surface and which distances are measured.
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