Bruhnke M, Wierichs R J, von Stein-Lausnitz M et al. Long-term survival of adhesively post-endodontically treated teeth. J Endod 2022; DOI: 10.1016/j.joen.2022.02.006.

Type of material appears irrelevant.

Many different types of post and core systems for endodontically treated teeth have been used over the years, including gold, stainless steel, titanium, zirconia and glass fibre. The restoration of the tooth with a structural unit with similar mechanical properties to dentine theoretically leads to a favourable stress distribution within the root.

This prospective study compared the longevity of two different glass fibre-reinforced post systems with those manufactured from titanium. Subjects were aged 18+ (n = 128) and requiring restoration of a root-filled tooth with two or fewer cavity walls a with a single crown, where a 2mm ferrule was possible. Between 2003 and 2008, post spaces were prepared with a parallel-tapered post system, posts bonded into place and a composite core built up by two calibrated operators. Definitive restorations were self-adhesively cemented.

Mean observation time was 7.7 years. The type of post had no statistically significant impact on tooth survival of these post-endodontic restorations. A higher survival rate was noted for canines. In common with other long-term studies, a high drop-out rate was recorded.