Laser Application to the Root Surface Increases the Bonding Strength of Surface-Treated Prefabricated Glass-Fiber Posts in Teeth with Excessive Substance Loss

Abstract Background To evaluate the effect of surface treatments on the push-out bond strength of Biodentine (BD) and white mineral trioxide aggregate (WMTA) to fiber posts. Methods Two brands of fiber posts were used: Reblida post; RP and RelyX post; RX. Each type of post (n = 80/group) was divided into four groups (n = 20/group) and exposed to surface treatment as follows: Control (no treatment), sandblasting (SB), hydrofluoric acid (HF), and TiF4 4 wt/v%. Each group was further subdivided into two subgroups (n = 10/subgroup) based on the type of CSCs used as follows: Subgroup A: BD and Subgroup B: WMTA. Push-out bond strength of BD and WMTA to glass fiber posts was assessed. Data were statistically analyzed using three-way ANOVA and Tukey’s test. A Weibull analysis was performed on the push-out bond strength data. Results BD showed higher bond strength than WMTA (P < 0.001). The push-out bond strength for posts treated with TiF4 4 wt/v% showed greater bond strength than the other surface treatments (P < 0.05). The BD/RP-TiF4 4 wt/v% showed the greater characteristic bond strength (σ0) (15.93) compared with the other groups. Surface treatments modified the surface topography of glass fiber posts. Conclusions The BD/RP-TiF4 4 wt/v% showed greater bond strength compared with the other groups. The TiF4 4 wt/v% surface treatment enhanced the bond strength of BD and WMTA to glass fiber posts than the other treatments. Surface treatment of fiber post with TiF4 4 wt/v% could be used to improve the bond strength with calcium silicate-based cements.

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CAD/CAM Milled Glass Fiber Posts: Adaptation and Mechanical Behavior in Flared Root Canals

Operative Dentistry ◽

10.2341/20-198-l ◽

2021 ◽

Author(s):

MER Gama ◽

GS Balbinot ◽

GC Ferreira ◽

EG Mota ◽

VCB Leitune ◽

...

Keyword(s):

Bond Strength ◽

Glass Fiber ◽

Fiber Post ◽

Root Canals ◽

Fiber Posts ◽

Cad Cam ◽

Glass Fiber Posts ◽

Glass Fiber Post ◽

Post And Core ◽

Push Out

SUMMARY This study aimed to evaluate the cementation and mechanical behavior of flared root canals restored with CAD/CAM milled glass fiber post-and-core systems. Sixty-six endodontically treated human canines with a flared root canal were divided into three different groups according to the type of post: GPF received prefabricated posts; GREL received relined glass fiber posts, and GMILLED received CAD/CAM milled glass fiber posts. Cementation was performed with self-adhesive resin cement. The samples were submitted to x-ray microcomputed tomography analysis for the analysis of voids and gaps. The roots were sectioned and submitted to the push-out bond strength test. The load-to-fracture was evaluated in post-and-core systems. GMILLED presented lower void and lower gap volumes when compared to GPF and GREL. On the load-to-fracture test, GREL presented statistically significant higher values than GMILLED. GPF values had no statistically significant difference from the two other groups. On the push-out bond strength test, GPF presented statistically significant lower values when compared to GREL and GMILLED. The most common failure pattern was between dentin and cement in all groups. CAD/CAM milled glass fiber post-and-core systems presented an enhanced adaptation of glass fiber posts to flared root canal systems. Their results were comparable to relined posts in bond strength, while load-to-fracture-results for GMILLED were lower than those for GPF.

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The effect of glass fiber posts and ribbons on the fracture strength of teeth with flared root canals restored using composite resin post and cores

Journal of Prosthodontic Research ◽

10.1016/j.jpor.2017.07.002 ◽

2018 ◽

Vol 62 (1) ◽

pp. 97-103 ◽

Cited By ~ 3

Author(s):

Mariko Kubo ◽

Wataru Komada ◽

Shiho Otake ◽

Tasuku Inagaki ◽

Satoshi Omori ◽

...

Keyword(s):

Glass Fiber ◽

Fracture Strength ◽

Composite Resin ◽

Root Canals ◽

Fiber Posts ◽

Glass Fiber Posts

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Effect of adhesive systems on microleakage in endodontically treated teeth restored with glass fiber posts

Journal of Adhesion Science and Technology ◽

10.1080/01694243.2014.883773 ◽

2014 ◽

Vol 28 (11) ◽

pp. 1034-1045

Author(s):

Erdem Özdemir ◽

Kamran Gülşahı ◽

Yonca Korkmaz ◽

Selim Erkut ◽

Abidin Hakan Tuncer

Keyword(s):

Glass Fiber ◽

Adhesive Systems ◽

Endodontically Treated Teeth ◽

Fiber Posts ◽

Glass Fiber Posts

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Survival of Composite Resin Restorations of severely Decayed Primary Anterior Teeth retained by Glass Fiber Posts or Reversed-orientated Metal Posts

International Journal of Clinical Pediatric Dentistry ◽

10.5005/jp-journals-10005-1344 ◽

2016 ◽

Vol 9 (2) ◽

pp. 109-113 ◽

Cited By ~ 3

Author(s):

Sina Ghertasi Oskouei ◽

Mohammad A Jafarabadi ◽

Ali Vafaei ◽

Bahram Ranjkesh ◽

Henrik Lovschall ◽

...

Keyword(s):

Glass Fiber ◽

Composite Resin ◽

Anterior Teeth ◽

Fiber Posts ◽

Glass Fiber Posts ◽

Composite Resin Restorations ◽

Resin Restorations

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Effect of post type and restorative techniques on the strain and fracture resistance of flared incisor roots

Brazilian Dental Journal ◽

10.1590/s0103-64402011000300009 ◽

2011 ◽

Vol 22 (3) ◽

pp. 230-237 ◽

Cited By ~ 32

Author(s):

Gisele Rodrigues da Silva ◽

Paulo César de Freitas Santos-Filho ◽

Paulo Cézar Simamoto-Júnior ◽

Luis Roberto Marcondes Martins ◽

Adérito Soares da Mota ◽

...

Keyword(s):

Glass Fiber ◽

Fracture Resistance ◽

Composite Resin ◽

Endodontically Treated Teeth ◽

Biomechanical Behavior ◽

Fiber Posts ◽

Strain Fracture ◽

Significant Difference ◽

Catastrophic Failures ◽

Glass Fiber Posts

Restoring flared endodontically treated teeth continues to be a challenge for clinicians. This study evaluated the effect of post types and restorative techniques on the strain, fracture resistance, and fracture mode of incisors with weakened roots. One hundred five endodontically treated bovine incisors roots (15 mm) were divided into 7 groups (n=15). The two control groups were (C) intact roots restored with Cpc (cast posts and core) or Gfp (glass fiber posts). The five experimental groups were (F) flared roots restored with GfpAp (Gfp associated with accessory glass fiber posts), GfpRc (anatomic Gfp, relined with composite resin), and GfpRcAp (anatomized Gfp with resin and accessory glass fiber posts). All teeth were restored with metal crowns. Mechanical fatigue was performed with 3x10(5)/50 N. Specimens were loaded at 45º, and the strain values (μS) were obtained on root buccal and proximal surfaces. Following that, the fracture resistance (N) was measured. One-way ANOVA and Tukey's HSD tests (α=0.05) were applied, and failure mode was checked. No significant difference in strain values among the groups was found. Cpc presented lower fracture resistance and more catastrophic failures in flared roots. Gfp associated with composite resin or accessory glass fiber posts seems to be an effective method to improve the biomechanical behavior of flared roots.

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