Comparative evaluation of fracture resistance of various post systems using different luting agents under tangential loading

Abstract

Within the limitations of this in vitro study, it can be stated that fibre posts can be recommended as a better alternative to the cast post and cores and prefabricated metallic posts in the anterior region and resin cement might give additional fracture resistance when used for post and crown cementation.

Fracture Resistance of Titanium and Fiber Dental Posts: A Systematic Review and Meta‐Analysis

“…Some studies reported ETT restored with fiber posts have better fracture resistance than titanium posts. 2,3,7 Opposite findings have also been reported. [15][16][17][18][19][20][21][22] Meanwhile, some studies concluded no significant difference between the two post materials.…”

“…Another reason might be the loss of pulpal proprioception. 3 Therefore, restoration after endodontic treatment is needed to replace the missing hard dental tissues and provide the necessary strength to ETT, restoring tooth function. 4,5 Full crown coverage is commonly used to restore ETT.…”

“…4,5 Full crown coverage is commonly used to restore ETT. 3 Post and core can also be used to support the restorations and/or crowns with satisfactory long-term results. 6 In the past, metallic posts were proposed to reinforce ETT by increasing its fracture resistance.…”

“…The results of a systematic review by Theodosopoulou et al 30 revealed that the success rate of glass fiber posts was significantly better than prefabricated metal posts and moderately better than quartz fiber posts. 23 Yes Newton 30 0 1 mm/min Ayad et al 9 No Newton 135 0 0.5 mm/min Khatter et al 17 No Newton 135 0 5 mm/min Ni et al 18 Yes Newton 15 0 2 mm/min Solomon et al 24 Yes Newton 130 0 0.5 mm/min Aggarwal et al 3 Yes Newton 135 0 1.5 mm/min Jindal et al 2 Yes Newton 135 0 0.5 mm/min Sagsen et al 25 No Newton 135 0 1 mm/min Zhang et al 19 Yes Newton 135 0 0.5 mm/min Maroulakos et al 4 Yes Newton 135 0 5 mm/min Abdulmunem et al 26 Yes Newton 45 0 0.5 mm/min Alarami et al 27 Yes Newton 25 0 0.5 mm/min Fadag et al 28 Yes Newton 135 0 1 mm/min Samran et al 21 Yes Newton 30 0 1 mm/min Veeraganta et al 20 Yes Newton 30 0 1 mm/min Toman et al 15 Yes Newton 135 0 0.5 mm/min…”

<p>A 10-Year Follow-Up of Different Intra-Radicular Retainers in Teeth Restored with Zirconia Crowns</p>

“…33 Like the literature reviews, laboratory and finite element studies have also cited the differences between failures in retainer systems and have shown that the greatest numbers of non-catastrophic failures are in fiberglass posts when compared with cast metallic cores, justifying the results where minor stresses are generated at the root when the fiberglass post is used, reducing the chance of the occurrence of root fracture, different from the higher fracture rates with cast metallic cores. 15,38,39 These results of lower catastrophic failure rates for the fiberglass post are associated with the lower elastic modulus, as the fiberglass posts are more similar to dental structures than are metal retainers. 39 This elastic modulus, which is similar to that of dentin, generates a better load distribution throughout the system; therefore, the fracture resistance is smaller than in metallic cores, 16 and the fiberglass post shows a more favorable biomechanical behavior.…”