scholarly journals Fracture strength of custom-fabricated Celay all-ceramic post and core restored endodontically treated teeth

2006 ◽  
Vol 119 (21) ◽  
pp. 1815-1820 ◽  
Author(s):  
Yu-xing ZHANG ◽  
Wei-hong ZHANG ◽  
Zhi-yue LU ◽  
Ke-li WANG
Keyword(s):  
Fracture Strength ◽  
Endodontically Treated Teeth ◽  
All Ceramic ◽  
Post And Core

scholarly journals The Retention and Fracture Resistance of Two All-ceramic Post and Core Systems in Anterior Endodontically Treated Teeth

2014 ◽  
Vol 3 (2) ◽  
pp. 95-101
Author(s):  
Anahita Safari ◽  
Amir Alireza Khaledi ◽  
Zeinab Shafiee ◽  
Naeeme Rahmani
Keyword(s):  
Fracture Resistance ◽  
High Fracture Toughness ◽  
High Fracture ◽  
Endodontically Treated Teeth ◽  
Core System ◽  
Crosshead Speed ◽  
All Ceramic ◽  
Post And Core ◽  
The Difference ◽  
Selection Of

Background: In anterior endodontically treated teeth a better esthetic can be achieved by using all-ceramic post -core restorations instead of metal post systems. Maximum retention and fracture resistance of the post are the criteria upon which selection of a post system is based. The aim of this study was to evaluate the fracture resistance and retention of two all-ceramic post and core systems including IPS Empress 2 post-core system and IPS Empress 2 core connected to Zirconium Cosmopost, and comparing these features among the two groupsMaterial and methods:  Eighty extracted maxillary central incisors and canines were divided into two groups of 40 including IPS Empress 2 and zirconium Cosmopost. To evaluate retention, shear force was applied to the cement at the crosshead speed of 0.5 mm/min; force was applied until the post was detached from the canal.  To measure the fracture resistance, the samples were loaded at 45-degrees to the horizon at the crosshead speed of 5 mm/min until fracture occurred.Result: The mean fracture strength and standard deviation of zirconium Cosmopost and IPS Empress 2 were 302.10 N (69.922), 151.63 N (48.661), respectively. The difference between groups was significant statistically (P<0.001). The zirconium Cosmoposts had lower retention than IPS Empress2 dowel-core, but the difference between groups was insignificant (p =0.134).  Conclusion:  Within the limitations of the study, it could be concluded that zirconium Cosmopost system may be a candidate for the restoration of anterior endodontically treated teeth, as the high fracture toughness and propitious esthetic feature.

Fracture strength of endodontically treated teeth restored with different fiber post and core systems

Odontology ◽  
2020 ◽  
Vol 108 (4) ◽  
pp. 588-595
Author(s):  
Taha Özyürek ◽  
Can Topkara ◽  
İmran Koçak ◽  
Koray Yılmaz ◽  
Mustafa Gündoğar ◽  
...  
Keyword(s):  
Fracture Strength ◽  
Fiber Post ◽  
Endodontically Treated Teeth ◽  
Post And Core

scholarly journals Fracture resistance of three post and core systems in endodontically treated teeth restored with all-ceramic crowns

2012 ◽  
Vol 3 (1) ◽  
pp. 33-38
Author(s):  
Tariq Abduljabbar ◽  
Haneef Sherfudhin ◽  
S.A. AlSaleh ◽  
Abdulaziz A. Al-Helal ◽  
Saleh S. Al-Orini ◽  
...  
Keyword(s):  
Fracture Resistance ◽  
Endodontically Treated Teeth ◽  
All Ceramic ◽  
Post And Core ◽  
Ceramic Crowns

scholarly journals Influence of intraradicular post and crown ferrule on the fracture strength of endodontically treated teeth

2009 ◽  
Vol 20 (4) ◽  
pp. 297-302 ◽  
Author(s):  
Jefferson Ricardo Pereira ◽  
Accácio Lins do Valle ◽  
Fábio Kenji Shiratori ◽  
Janaina Salomon Ghizoni ◽  
Murilo Pereira de Melo
Keyword(s):  
Fracture Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
Endodontically Treated Teeth ◽  
Failure Data ◽  
Universal Testing ◽  
Custom Made ◽  
Resin Core ◽  
Post And Core ◽  
The Mean

The aim of this study was to investigate the fracture strength of endodontically treated teeth restored with different posts and variable ferrule heights. Sixty freshly extracted human canines were treated endodontically and randomly assigned to 6 groups (n=10), being restored with custom-made cast post-and-core (CP0 and CP3 groups), prefabricated post and composite resin core (PF0 and PF3 groups), and composite resin (CR0 and CR3 groups). The CP0, PF0 and CR0 groups presented no ferrule and the CP3, PF3 and CR3 presented 3 mm of coronal structure. All teeth were restored with full metal crowns. The fracture strength was measured in a universal testing machine at 45o to the long axis of the tooth until failure. Data were analyzed statistically by 2-way ANOVA and Tukey's test (?=0.05). When the mean fracture strength values were compared (CP0 group - 820.20 N, CP3 group - 1179.12 N; PF0 group - 561.05 N; PF3 group - 906.79 N; CR0 group - 297.84 N; and CR3 group - 1135.15 N) there was statistically significant among the groups (p<0.05), except for the three groups with 3 mm of coronal remaining, which were similar to each other. The results of this study showed that the ferrule in crowns promoted significantly higher fracture strength in the endodontically treated teeth.

scholarly journals Effect of cyclic loading on fracture strength of endodontically treated teeth restored with conventional and esthetic posts

2006 ◽  
Vol 14 (4) ◽  
pp. 297-303 ◽  
Author(s):  
Anuar Antônio Xible ◽  
Rudys Rodolfo de Jesus Tavarez ◽  
Carlos dos Reis Pereira de Araujo ◽  
Paulo César Rodrigues Conti ◽  
Wellington Cardoso Bonachella
Keyword(s):  
Survival Rate ◽  
Cyclic Loading ◽  
Fracture Strength ◽  
Resin Composite ◽  
Endodontically Treated Teeth ◽  
Core System ◽  
Group 3 ◽  
Post And Core ◽  
Group 2 ◽  
Group 1

INTRODUCTION: Esthetic post and core systems were recently introduced. There are few reports regarding their behavior under cyclic loading. OBJECTIVES: This study compared the effect of cyclic loading on survival rate, residual strength and mode of fracture of endodontically treated teeth restored with esthetic and direct metallic post systems subjected to mechanical cyclic loading. MATERIALS AND METHODS: Thirty canines were endodontically treated, decoronated and prepared for metal free ceramic crowns, leaving 1.5 mm of dentin for ferrule effect. They were distributed in 3 groups and restored as follows: group 1 with zirconia posts (Cosmopost) and glass-ceramic cores (IPS Empress Cosmopost); group 2 with fiber reinforced composite posts (FibreKor) and group 3 with titanium posts (AZthec Anchor). Direct resin composite (Build It FR Resin Composite) was used as core in groups 2 and 3. All specimens were restored with all ceramic crowns (IPS Empress 2). A resin cement/adhesive system (Cement It/Bond It Primer A+B) was used to lute the posts to root canals and metal free porcelain crowns to the teeth preparation. Specimens were subjected to mechanical load of 250 N for 500,000x at a frequency of 1.7 Hz and then to static load until failure in a universal testing machine. Data were analyzed using One-way ANOVA and Fischer Exact tests alpha=0.05. RESULTS: All groups had 100% survival rate after cyclic loading; fracture strength values (SD) in N were: group 1 = 886.5(170.6), group 2 = 762.2(113.6) and group 3 = 768.9(72.9); there was no difference among groups (p=0.08); the percentage of mode of favorable fracture found was: group 1 = 60%, group 2 = 90% and group 3 = 50%; there was no correlation between the mode of failure and post and core system used (P=0.142). CONCLUSIONS: Esthetic post and core systems showed statistically equivalent fracture strength values, mode of failure and survival rate compared to conventional direct metallic post and resin composite core system after cyclic loading.

Monobloco – cimentação de pino e preenchimento em único passo em dente tratado endodonticamente

2020 ◽  
Vol 10 (37) ◽  
pp. 10-19
Author(s):  
Patrícia Ferronato Araújo ◽  
Ana Carolina Portes Pasmadjian ◽  
Antonio Setsuo Sakamoto Junior
Keyword(s):  
Composite Resin ◽  
Case Reports ◽  
Single Step ◽  
Resin Cement ◽  
Endodontically Treated Teeth ◽  
Posterior Teeth ◽  
Elasticity Module ◽  
Post And Core Technique ◽  
Post And Core ◽  
Root Fiber

The literature reports several materials for the restoration of endodontically treated teeth, with coronal destruction that requires an intra-root fiber post to stabilize the prosthetic part. The intra-radicular post of composite resin reinforced with fiberglass can be used as retainers in rehabilitating endodontically treated teeth due to their adhesiveness, pleasing aesthetics, and elasticity module close to the dentin less wear on the remaining structure. This clinical case reports the step-by-step application of dual resin cement (Rebilda DC Dentine - Voco) used as the cementation material of the post and material for the filling core in a single step, in an upper right lateral incisor. Moreover, it describes the advantages and indications of the post-and-core technique, also called “monobloc” which can be used in both anterior and posterior teeth. This protocol minimizes the adhesive interfaces, the chair time, and the steps of the clinical procedure.

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