We are using cookies to implement functions like login, shopping cart or language selection for this website. Furthermore we use Google Analytics to create anonymized statistical reports of the usage which creates Cookies too. You will find more information in our privacy policy.
OK, I agree I do not want Google Analytics-Cookies
Quintessence International



Forgotten password?


Quintessence Int 38 (2007), No. 3     2. Feb. 2007
Quintessence Int 38 (2007), No. 3  (02.02.2007)

Online Article, Page 173, PubMed:17510726

Online Article: Effect of dowel length on the retention of 2 different prefabricated posts
Borer, Robert E. / Britto, Leandro R. / Haddix, James E.
Objective: To compare in vitro the retentive values of stainless steel, parallel-sided posts to quartz-fiber, tapered posts for 2 different dowel lengths (5 and 10 mm). Method and Materials: Both post systems were cemented with a dual-cure adhesive resin cement. Single-rooted extracted human teeth (n = 40) were decoronated and randomly divided into 4 groups of 10 samples each. Posts of 5 and 10 mm in length were luted with the resin cement. Each sample was placed on a universal testing machine, and using a push-out method, a vertical load was applied at a crosshead speed of 2 mm/min. The amount of force required to dislodge the post was recorded. The effect of post type and length was evaluated using a 2-way analysis of variance.
Results: A statistically significant main effect was found for post length (P < .001), with the 10-mm posts of both post systems requiring greater force to dislodge than the 5-mm posts. There was no interaction between post length and post type (P > .05).
Conclusion: It is concluded from this study that there is no statistical difference in retention between quartz-fiber, tapered posts and stainless steel, parallel-sided posts when they are cemented with the same resin cement (P > .05). The study also concludes that adequate retentive values are achieved with both post systems at the shorter, 5-mm post length.

Keywords: post and core, post retention, quartz-fiber post, root canal therapy, stainless steel post