The ferrule effect: a literature review.
A ferrule is a metal ring or cap used to strengthen the end of a stick or tube. It has been proposed that the use of a ferrule as part of the core or artificial crown may be of benefit in reinforcing root-filled teeth. A review of the literature investigating this effect is presented. The literature demonstrates that a ferrule effect occurs owing to the artificial crown bracing against the dentine extending coronal to the crown margin. Overall, it can be concluded that a ferrule is desirable, but should not be provided at the expense of the remaining tooth/root structure.
Stankiewicz
N R
NR
General Dental Practice, Bath, UK.
Wilson
P R
PR
D003442:Crowns; D003804:Dentin / Q000502:physiology; D006801:Humans; D011176:Post and Core Technique / Q000295:instrumentation*; D014082:Tooth Fractures / Q000517:prevention & control; D014093:Tooth, Artificial; D019415:Torque