scholarly journals Evaluation of composite resin core with prefabricated polyetheretherketone post on fracture resistance in the case of flared root canals

2020 ◽  
Vol 39 (6) ◽  
pp. 924-932
Author(s):  
Kiriko SUGANO ◽  
Wataru KOMADA ◽  
Daizo OKADA ◽  
Hiroyuki MIURA
Keyword(s):  
Fracture Resistance ◽  
Composite Resin ◽  
Root Canals ◽  
Resin Core

scholarly journals A Comparative Evaluation of Fracture Resistance of Endodontically Treated Teeth restored with Composite Resin Core using Two Different Designs of Prefabricated Metal Posts: An in vitro Study

2017 ◽  
Vol 7 (2) ◽  
pp. 97-102
Author(s):  
Sabita M Ram ◽  
Naisargi Shah ◽  
Amit M Gaikwad
Keyword(s):  
Fracture Resistance ◽  
Comparative Evaluation ◽  
Composite Resin ◽  
Fracture Load ◽  
Endodontically Treated Teeth ◽  
Group I ◽  
Resin Core ◽  
Post And Core ◽  
The Mean

ABSTRACT Aim To comparatively evaluate the fracture resistance of endodontically treated teeth restored with light-cured composite resin core using two different designs of prefabricated metal posts. Materials and methods A total of 30 single-rooted anterior teeth were selected for the study and endodontically treated. Teeth were sectioned 2 mm above the cementoenamel junction and were randomly divided into two groups (n = 15). Teeth in group I were restored with Parallel post—EG post and group II with parallel post with coronal flare—i post. Light-cured composite core buildup was done in all samples using a customized core former. Compressive load was applied at a 135° angle to the long axis of the tooth at a cross-head speed of 1 mm/minute until visible signs of fracture were observed. Levene's test and t-test were used to determine the difference of the failure loads between the groups (α = 0.05). Results The mean values (standard deviation [SD]) for fracture resistance were 295.55 N and 469.59 N for parallel post—EG post and parallel post with coronal flare—i post respectively. Since the p-value for the t-test is less than 0.05, it indicates that we should reject null hypothesis and conclude that the mean fracture load of parallel post with coronal flare—i post is significantly more than that of mean fracture load of parallel post—EG post. Conclusion The study conducted evaluated that the fracture resistance of endodontically treated teeth with parallel post with coronal flare—i post and core buildup had better strength as compared with parallel post—EG post and core buildup. Clinical significance The present study will help the clinician to select the appropriate prefabricated metal post that will fit exactly into the coronal flare of the canal improving clinical performance, thus increasing the longevity of the restoration. How to cite this article Gaikwad AM, Shah N, Ram SM. A Comparative Evaluation of Fracture Resistance of Endodontically Treated Teeth restored with Composite Resin Core using Two Different Designs of Prefabricated Metal Posts: An in vitro Study. J Contemp Dent 2017;7(2):97-102.

scholarly journals An assessment of fracture resistance of three composite resin core build-up materials on three prefabricated non-metallic posts, cemented in endodontically treated teeth: An in vitro study

2014 ◽  
Author(s):  
Lalit Kumar ◽  
Bhupinder Pal ◽  
Prashant Pujari
Keyword(s):  
Fracture Resistance ◽  
Composite Resin ◽  
In Vitro Study ◽  
Endodontically Treated Teeth ◽  
Tooth Structure ◽  
Resin Core ◽  
Post And Core ◽  
Strength And Durability ◽  
Core Materials

Endodontically treated teeth with excessive loss of tooth structure would require to be restored with post and core to enhance the strength and durability of the tooth and to achieve retention for the restoration. The non-metallic posts have of a superior esthetic quality. Various core materials can be used to build-up cores on the posts placed in endodontically treated teeth. The core materials would show variation in their bonding with the non-metallic posts and the remaining tooth structure. They will also have an effect on the strength and resistance to fracture of the remaining tooth structure. Aims: The aim of the study was to assess the fracture resistance of three composite resin core build-up materials on three prefabricated non-metallic posts, cemented in extracted endodontically treated teeth. Material and methods: Forty five freshly extracted maxillary central incisors of approximately of the same size and shape were selected for the study. Student’s unpaired ‘t’ test was also used to analyse and compare each group with the other groups individually, and decide whether their comparisons were statistically significant. Results: Luxacore showed the highest fracture resistance among the three core build-up materials with all the three posts systems. Ti-core had intermediate values of fracture resistance and Lumiglass had least values of fracture resistance.

scholarly journals An assessment of fracture resistance of three composite resin core build-up materials on three prefabricated non-metallic posts, cemented in endodontically treated teeth: An in vitro study

2014 ◽  
Author(s):  
Lalit Kumar ◽  
Bhupinder Pal ◽  
Prashant Pujari
Keyword(s):  
Fracture Resistance ◽  
Composite Resin ◽  
In Vitro Study ◽  
Endodontically Treated Teeth ◽  
Tooth Structure ◽  
Resin Core ◽  
Post And Core ◽  
Strength And Durability ◽  
Core Materials

Endodontically treated teeth with excessive loss of tooth structure would require to be restored with post and core to enhance the strength and durability of the tooth and to achieve retention for the restoration. The non-metallic posts have of a superior esthetic quality. Various core materials can be used to build-up cores on the posts placed in endodontically treated teeth. The core materials would show variation in their bonding with the non-metallic posts and the remaining tooth structure. They will also have an effect on the strength and resistance to fracture of the remaining tooth structure. Aims: The aim of the study was to assess the fracture resistance of three composite resin core build-up materials on three prefabricated non-metallic posts, cemented in extracted endodontically treated teeth. Material and methods: Forty five freshly extracted maxillary central incisors of approximately of the same size and shape were selected for the study. Student’s unpaired ‘t’ test was also used to analyse and compare each group with the other groups individually, and decide whether their comparisons were statistically significant. Results: Luxacore showed the highest fracture resistance among the three core build-up materials with all the three posts systems. Ti-core had intermediate values of fracture resistance and Lumiglass had least values of fracture resistance.

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.

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