Amount of G.P should after post preparation:
- a. 1 mm.
- b. 4-5 mm.
- c. 10 mm.
- d. None of the above.
As a general guide the post should be at least equal to the anticipated crown height, but a minimum of 4 mm of well-condensed GP should be left. A periodontal probe is helpful to check prepared canal length.
How much gutta percha should be retained during post space preparation?
5 mm
The techniques used for removing the filling material vary, but it is recommended that an apical seal of at least 5 mm of gutta-percha be retained.
What is the ideal length for a post in post core in an endodontically treated tooth?
The criteria for an endodontically treated tooth requiring a post is that the minimum length of remaining solid tooth equal the sum of the biologic width (2.5 mm), the ferrule length (2 mm), the apical seal (4 mm) and the post length, or 8.5 mm + post length (Fig. 1).
How much ferrule do you need?
A minimal height of 1.5 mm to 2 mm of intact tooth structure above the crown margin for 360 degrees around the circumference of the tooth preparation appears to be a rational guideline for this ferrule effect.
What is the minimum gutta percha for post?
When preparing for a post, select the widest root canal – and take care to not overprepare or enlarge the canal. Make sure to leave at least 4 to 5 mm of gutta percha as an apical barrier and ensure the post preparation diameter is smaller than one third of the root diameter.
