Premium
Custom and prefabricated PolyEtherKetoneKetone (PEKK) post‐core systems bond strength: Scanning electron microscopy evaluation
Author(s) -
Güven Melahat Çelik,
Dayan Süleyman Çağatay,
Yıldırım Gülhan,
Mumcu Emre
Publication year - 2020
Publication title -
microscopy research and technique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 118
eISSN - 1097-0029
pISSN - 1059-910X
DOI - 10.1002/jemt.23471
Subject(s) - bond strength , scanning electron microscope , post and core , materials science , root canal , universal testing machine , composite material , fiber , dentistry , ultimate tensile strength , adhesive , medicine , layer (electronics) , crown (dentistry)
The present study evaluated the bond strengths of prefabricated PolyEtherKetoneKetone (PEKK) posts, PEKK posts custom‐configured according to root‐canal size, and conventional fiber posts. A total of 30 maxillary incisors were randomly divided into three groups, as follows: Group 1: fiber posts; Group 2: prefabricated PEKK posts; Group 3; custom‐made PEKK posts. Following endodontic treatment, post spaces were prepared, and posts were cemented with resin cement. Push‐out bond strength testing was performed using a universal testing machine, and fractures modes were examined under a scanning electron microscope. Data were analyzed using One‐way ANOVA and Tukey's HSD tests, with the level of significance set at .05. The highest bond‐strength values in the cervical section were observed with the custom‐made PEKK post (17.3470 MPa), whereas the highest bond‐strength values in the middle and apical sections were observed with the conventional fiber posts (11.5375 MPa and 6.8625 MPa, respectively). Bond‐strength values for all posts systems decreased in a cervical to apical direction. PEKK posts are a suitable alternative to fiber posts. Although custom‐made PEKK posts demonstrated better bond strength than prefabricated PEKK posts, further studies are needed to evaluate their clinical performance.