Who gave the concept of well adapted crown?: (A) Winkler, (B) Spedding, (C) Webber, (D) Wilkinson
Answer is B. - The smallest crown that completely covers the preparation should be chosen.
- Spedding has advocated adhering to two important principles that will help consistently to produce well-adapted stainless steel crowns.
a. The operator must establish the correct occluso-gingival crown length; and
b. The crown margins should be shaped circumferentially to follow the natural contours of the tooth’s marginal gingivae.