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

2011 ◽  
Vol 22 (3) ◽  
pp. 230-237 ◽  
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.

scholarly journals Fracture resistance of weakened roots restored with composite resin and glass fiber post

2008 ◽  
Vol 19 (4) ◽  
pp. 329-333 ◽  
Author(s):  
Lucas Villaça Zogheib ◽  
Jefferson Ricardo Pereira ◽  
Accácio Lins do Valle ◽  
Jonas Alves de Oliveira ◽  
Luiz Fernando Pegoraro
Keyword(s):  
Glass Fiber ◽  
Fracture Resistance ◽  
Composite Resin ◽  
Testing Machine ◽  
Control Group ◽  
Endodontically Treated Teeth ◽  
Fiber Posts ◽  
Resin Core ◽  
Significant Difference ◽  
Glass Fiber Posts

This study evaluated the fracture resistance of weakened roots restored with glass fiber posts, composite resin cores and complete metal crowns. Thirty maxillary canines were randomly divided into 3 groups of 10 teeth each: teeth without weakened roots (control); teeth with partially weakened roots (PWR) and teeth with and largely weakened roots (LWR). The control group was restored with glass fiber posts and a composite resin core. Teeth in the PWR and LWR groups were flared internally to standardized dimensions in order to simulate root weakness. Thereafter, the roots were partially filled with composite resin and restored in the same way as in the control group. The specimens were exposed to 250,000 cycles in a controlled chewing simulator. All intact specimens were subjected to a static load (N) in a universal testing machine at 45 degrees to the long axis of the tooth until failure. Data were analyzed by one-way ANOVA and Dunnett's test for multiple comparisons (p=0.05). There were statistically significant difference differences (p<0.01) among the groups (control group = 566.73 N; PWR = 409.64 N; and LWR = 410.91 N), with significantly higher fracture strength for the control group. There was no statistically significant difference (p>0.05) between the weakened groups. The results of this study showed that thicker root dentin walls significantly increase the fracture resistance of endodontically treated teeth.

Fracture Resistance of Teeth Restored with Different Post Systems Using New-generation Adhesives

2008 ◽  
Vol 9 (7) ◽  
pp. 33-40 ◽  
Author(s):  
Güliz Görgül ◽  
Bagdagül Helvacioglu Kivanç
Keyword(s):  
Glass Fiber ◽  
Fracture Resistance ◽  
Composite Resin ◽  
Single Bond ◽  
Adhesive Systems ◽  
Anterior Teeth ◽  
Fiber Posts ◽  
Group I ◽  
Luting Cement ◽  
Glass Fiber Posts

Aim The aim of this study was to investigate the fracture strength of three post systems cemented with a dual cure composite resin luting cement by using different adhesive systems. Methods and Materials In this study 63 extracted anterior teeth with single roots were endodontically prepared and filled. Teeth were randomly assigned to one of three post systems placed into the prepared canals: Group I - titanium posts (n=21) (Filpost); Group II - glass fiber posts (n=21) (Mirafit White); and Group III zirconia posts (n=21) (CosmoPost). Each group was again randomly divided into three subgroups according to the bonding materials used [Single Bond (n=7), Clearfil SE Bond (n=7), and Prompt L Pop (n=7)]. A dual cured resin cement (Rely X ARC) was used for bonding the posts into the root canals. Standard cores were made by a composite resin (Clearfil Photocore) using core build-ups. The samples were tested in the compression test machine for 1 mm/min and fracture resistance of the teeth were recorded. The data was analyzed by using twoway analysis of variance (ANOVA) and Duncan's New Multiple Range Tests. A significance level of p<.05 was used for all comparisons. Results There was a significant difference in fracture resistance between the post systems (p<0.05) and the interaction of adhesive resins and post systems (p<0.05). Mirafit White was more resistant to fracture than other groups; Filpost showed the least resistance to fracture. CosmoPost post system bonded with Single Bond recorded the lowest fracture resistance (p<0.05). Conclusion Endodontically treated anterior teeth restored with glass fiber posts exhibited higher failure loads than teeth restored with zirconia and titanium posts. Self-etching adhesives are better alternatives to etch-andrinse adhesive systems for luting post systems. Clinical Significance Under the condition of this study, glass fiber posts are preferable to restore endodontically treated anterior teeth. Citation Kivanç BH, Görgül G. Fracture Resistance of Teeth Restored with Different Post Systems Using Newgeneration Adhesives. J Contemp Dent Pract 2008 November; (9)7:033-040.

Fracture resistance of endodontically treated teeth restored with glass fiber posts of different lengths

2014 ◽  
Vol 111 (1) ◽  
pp. 30-34 ◽  
Author(s):  
Érico Braga Franco ◽  
Accacio Lins do Valle ◽  
Ana Lúcia Pompéia Fraga de Almeida ◽  
José Henrique Rubo ◽  
Jefferson Ricardo Pereira
Keyword(s):  
Glass Fiber ◽  
Fracture Resistance ◽  
Endodontically Treated Teeth ◽  
Fiber Posts ◽  
Glass Fiber Posts

scholarly journals Comparative Evaluation of Fracture Resistance of Simulated Immature Teeth Restored with Glass Fiber Posts, Intracanal Composite Resin, and Experimental Dentine Posts

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Vineeta Nikhil ◽  
Padmanabh Jha ◽  
Akarshak Aggarwal
Keyword(s):  
Glass Fiber ◽  
Fracture Resistance ◽  
Composite Resin ◽  
Testing Machine ◽  
Group 4 ◽  
Immature Teeth ◽  
Gutta Percha ◽  
Fiber Posts ◽  
Glass Fiber Posts ◽  
Group 1

Aim. The aim of this study was to compare the fracture resistance of simulated immature teeth restored with gutta-percha, glass fiber posts (GFP), experimental dentine posts (DP) or Intracanal composite Resin (ICR).Materials and Methods. Fifty maxillary canines were decoronated, standardized and enlarged until, number 5 Peeso reamers were allowed to simulate immature teeth. After placement of 5 mm of MTA, the canals were divided into 5 groups and filled as follows: Group 1: AH Plus + gutta-percha, lateral compaction; Group 2: GFP luted with PARACORE dual cure resin; Group 3: DP luted with PARACORE dual cure resin; Group 4: PARACORE dual cure resin. A standardized core was built in all groups except in Group 5. Each of the specimens was tested for fracture resistance by universal testing machine.Results. The mean fracture resistance were 817 ± 27.753, 1164.6 ± 21.624, 994.4 ± 96.8747, 873.8 ± 105.446 and 493.7 ± 6.945 newtons for Groups 1, 2, 3, 4, and 5 respectively. Independent “t” test revealed statistically significant discrepancies, in the fracture resistance among the 4 groups except Group 1 and Group 4 (P<0.05).Conclusions. This study suggests that GFP and DP may be preferred for additional reinforcement of immature teeth.

scholarly journals Fracture Resistance of Three Post Types in the Restoration of Anterior Primary Teeth

2020 ◽  
Vol 14 (1) ◽  
pp. 375-383
Author(s):  
Fatemeh Kadkhodaei ◽  
Majid Mehran ◽  
Roza Haghgoo ◽  
Mehrshad Zareiyan
Keyword(s):  
Glass Fiber ◽  
Fracture Resistance ◽  
Primary Teeth ◽  
Composite Resin ◽  
Pediatric Dentistry ◽  
Fiber Post ◽  
Anterior Teeth ◽  
Fiber Posts ◽  
Glass Fiber Posts ◽  
Glass Fiber Post

Background: Extensive restorative treatments of anterior primary teeth are challenging in pediatric dentistry. Objective: This study aimed to compare the fracture resistance of three post types for restoring the anterior primary teeth. Methods: This in-vitro study was carried out on 90 extracted maxillary anterior primary teeth with intact roots. They were randomly allocated into six groups to be restored with conventional composite resin post, X-tra fill composite resin post, Tetric N Ceram composite resin post, prefabricated glass fiber post with conventional composite build-up, prefabricated glass fiber post with X-tra fill composite build-up, and prefabricated glass fiber post with Tetric N Ceram composite build up. The samples were polished and placed in acrylic resin blocks with 1 mm of part of cervical root being out, thermocycled (×5000) and tested for fracture resistance. Intra-class correlation test, Kruskal-Wallis test and one-way ANOVA were used for statistical analyses (α=0.05). Results: The mean fracture resistance was significantly different among the six groups. It was the highest in prefabricated glass fiber post with conventional composite build-up (418.64 N), prefabricated glass fiber post with X-tra fill composite build-up (403.63 N) and prefabricated glass fiber post with Tetric N Ceram composite build up (361.63 N); and the lowest in Tetric N Ceram group (280.65 N). The groups were significantly different concerning the fracture strength and fracture state. Conclusion: Since the anterior teeth restored with prefabricated glass fiber posts were far more fracture resistant, and prefabricated glass fiber posts can be promisingly used for the restoration of anterior primary teeth.

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

2018 ◽  
Vol 62 (1) ◽  
pp. 97-103 ◽  
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

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

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
Sign in / Sign up

Export Citation Format

Share Document