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Compressive Characteristics of an Internally Threaded Post System
Author(s) -
Laurell Kim Allen,
O'Neilly Paul,
Johnston William M.
Publication year - 1996
Publication title -
journal of prosthodontics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.902
H-Index - 60
eISSN - 1532-849X
pISSN - 1059-941X
DOI - 10.1111/j.1532-849x.1996.tb00283.x
Subject(s) - materials science , composite material , compressive strength , epoxy , significant difference , composite number , fracture (geology) , statistical analysis , orthodontics , dentistry , mathematics , medicine , statistics
Purpose The effects of oblique compressive forces were evaluated for extracted teeth restored with posts of solid and internally threaded designs. Materials and Methods A group of 25 roots was restored with crowns supported by Para‐post dowels and pin‐retained composite resin cores, and a second group was restored with gold copings cast to internally threaded stainless steel‐post prototypes. Samples were then embedded in epoxy resin and loaded at 45° until failure. Failure force and type were statistically analyzed to determine statistical difference (P < .05) between groups. Results No statistical difference was shown between groups for either fracture force or type. Conclusions The internally threaded post system resisted oblique loading forces similarly to a solid post system.