Clinical performance of different post and core systems ‐ results of a pilot study*

Abstract

During the period 1974-1986, 112 post and core build-ups were inserted in 74 patients. The build-ups consisted of a metal prefabricated post (Dentatus, Unimetric or Radix) in combination with a composite core. After an average follow-up period of 7.9 years, 14 failures (12.5%) were noticed. Eight teeth could be rerestored and six teeth had to be extracted. However, when correction was made for teeth with a bad initial prognosis and for extractions not related to the build-up restoration, eight failures remained caused by failure of the build-up (7.5%). The Dentatus posts seemed to increase the risk for failure.

A 10-year retrospective study of the survival rate of teeth restored with metal prefabricated posts versus cast metal posts and cores

“…Loss of retention was the most frequent complication in accordance with other studies. [13][14][15] With regards to root fractures, Sorensen and Engelman 26 ascertained that a tapered post could act as a wedge and fracture the root during function. Parallel-sided posts apparently induce less stress on the root, being therefore less prone to fracture.…”

“…10,11 Regardless of the type of post, the survival rate was 83% after a follow-up of 10 years, which is comparable with the results reported in other studies. [10][11][12][13][14] Fokkinga et al 15 in 2007 performed a 17-year long-term clinical study, analyzing the survival of different metal post-and-core restorations with a covering crown as well as post-free allcomposite core restoration. The results showed no influence of ''type of post-and-core restoration'' on the survival probability.…”

Up to 17-year controlled clinical study on post-and-cores and covering crowns

“…Another long-term prospective study (up to 10 years) with a similar aim included a limited number of restorations, 10 while other long-term studies on post-andcore reconstructed teeth are retrospective. [6][7][8][20][21][22][23][24] To our knowledge, data from randomized clinical trials are lacking.…”

Success rates of prosthetic restorations on endodontically treated teeth; a systematic review after 6 years

“…However, others have been unable to significantly relate tooth group and survival of RCT teeth (22). These include the age of the patient (14,15,22), the type of post (if one is used) (23)(24)(25)(26), root filling density (14,18) and the number of sessions until completion of endodontic treatment (27)(28)(29). These include the age of the patient (14,15,22), the type of post (if one is used) (23)(24)(25)(26), root filling density (14,18) and the number of sessions until completion of endodontic treatment (27)(28)(29).…”