scholarly journals Analysis of endodontic success using a Periapical Index in teeth with different types of intraradicular posts

2021 ◽  
Vol 10 (8) ◽  
pp. e15110816932
Author(s):  
Otavio da Silva Sposito ◽  
Tatiana Pereira-Cenci ◽  
Noéli Boscato ◽  
Rogério de Castilho Jacinto
Keyword(s):  
Glass Fiber ◽  
Endodontic Treatment ◽  
Fiber Post ◽  
Significance Level ◽  
Cast Metal ◽  
Kaplan Meier ◽  
Glass Fiber Post ◽  
First Time ◽  
Metal Post

This randomized clinical trial evaluated the influence of the type of intraradicular posts (glass fiber post or cast metal post) in the success of endodontic treatment in teeth that received single metal-ceramic restoration. The sample consisted of adult patients, who presented for the first time seeking routine dental care at the dental school over a period of 5 years. Seventy-six out of ninety-six teeth that received endodontic treatment and intraradicular post were analyzed, randomly distributed in two groups – glass fiber post (n=38), and cast metal post (n=38). The quality of the endodontic treatment was radiographically evaluated, and the apical status was assessed using the periapical index (PAI). Statistical Analyses were performed to a significance level of 5%. Descriptive analyses were used to characterize the teeth and survival curves were created using the Kaplan–Meier method. The success rate of endodontic treatment was 90.8% (n=69) including glass fiber post and cast post. When appropriate endodontic treatment was performed is possible to conclude that the success of endodontic treated teeth that received posts was not related to the post type.

scholarly journals Influence of diameter and intraradicular post in the stress distribution. Finite element analysis

2016 ◽  
Vol 45 (3) ◽  
pp. 171-176 ◽  
Author(s):  
Cleidiel Aparecido Araujo LEMOS ◽  
Daniel Augusto de Faria ALMEIDA ◽  
Victor Eduardo de Souza BATISTA ◽  
Carol Cantieri MELLO ◽  
Fellippo Ramos VERRI ◽  
...  
Keyword(s):  
Finite Element ◽  
Carbon Fiber ◽  
Glass Fiber ◽  
Fiber Post ◽  
Endodontically Treated Teeth ◽  
Cast Metal ◽  
Biomechanical Behavior ◽  
Glass Fiber Post ◽  
Oblique Load ◽  
Metal Post

Abstract Introduction The biomechanical behavior of endodontically treated teeth depending on the selected restorative material and tooth situation to be restored. Objective To analyze by the two-dimensional finite element method the biomechanical behavior of different diameters in intraradicular posts and teeth with coronal remaining of 2mm. Material and method Six models were made with three types of posts, as follows: Glass fiber post, carbon fiber post, and cast metal post, both with diameter # 1 (1.1 mm in diameter) and # 2 (1.3 mm of diameter). The modeling was performed using the Rhinoceros 4.0 program. The FEMAP 10.2 and NEiNastran 9.2 programs were used to develop finite element models. The loading used was 100N for axial and oblique forces. The results were visualized using the von Mises stress map. The statistical analysis was made using analysis of variance (ANOVA) and Tukey post-test, with a significance level of 5%. Result The oblique loading stress values were higher than the axial loading (p<0.001) for both situations. The glass fiber post showed the lowest concentrations of stress on both loads (p<0.001). The carbon fiber post presented significant difference compared to the cast metal post, only in the oblique load (p=0.007). The diameter did not increase the stress of the evaluated posts (p=0.302). Conclusion The fiber posts were more favorable for restoration of endodontically treated teeth; the increase of diameter did not influence the increase of tension; the oblique load was more harmful for both posts and tooth structure.

scholarly journals Evaluation of the fracture resistance of remaining thin-walled roots restored with different post systems

2013 ◽  
Vol 1 (3) ◽  
pp. 184
Author(s):  
Luis Gustavo Nunes Dias Pinho ◽  
Gustavo Helder Vinholi ◽  
Tulio Kalife Coelho ◽  
Dimas João Rodrigues Neto ◽  
Daiane Cerutti Kopplin ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Fracture Strength ◽  
Composite Resin ◽  
Compressive Loading ◽  
Test Machine ◽  
Fiber Post ◽  
Cast Metal ◽  
Glass Fiber Post ◽  
Post And Core ◽  
Metal Post

The purpose of this work was evaluating the fracture strength of bovine roots weakened experimentally, restored with two different techniques: internal reinforcement of root canal walls with composite resin and a cast metal post and core or anatomic post (glass fiber post associated with composite resin). Thirty bovine lower central incisive were selected and transversally sectioned, remaining 14 mm of root in order to approximate to the human maxillary central incisive.  A sequence of standardized wear was used to weak the root until the walls remaining achieved from 0.5 to 0.7 mm of thickness at the cervical edge. Two groups were separated randomly (n=15) in order to test the roots reinforced with composite resin associated with cast metal post and core (CMP), or roots restored with composite resin associated to the glass fiber post (GFP). The test were applied in a Universal Test Machine (EMIC) with tangential compressive loading focused on the lingual face of core in an angle of 135° with the long axis of the tooth at a crosshead speed of 0.5 mm/min until failure occurred. The results showed that the fracture strength of remaining roots with weakened walls was influenced by the restorative technique, and the higher values of strength fractures were observed in the group of roots reinforced by composite resin associated with CMP (p<0.001) when compared to the group of roots restored with anatomic post.

Bond strength between root dentin and three glass-fiber post systems

2006 ◽  
Vol 96 (1) ◽  
pp. 41-46 ◽  
Author(s):  
Mustafa Kalkan ◽  
Aslihan Usumez ◽  
A. Nilgun Ozturk ◽  
Sema Belli ◽  
Gurcan Eskitascioglu
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Fiber Post ◽  
Glass Fiber Post ◽  
Root Dentin

scholarly journals Evaluation of Different Restoration Combinations Used in the Reattachment of Fractured Teeth: A Finite Element Analysis

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Nagihan Guven ◽  
Ozgur Topuz ◽  
İhsan Yikilgan
Keyword(s):  
Finite Element Analysis ◽  
Glass Fiber ◽  
Composite Resin ◽  
Fracture Line ◽  
Core Material ◽  
Fiber Post ◽  
Stress Concentrations ◽  
Element Analysis ◽  
Composite Resin Restoration ◽  
Glass Fiber Post

Objective. The purpose of this study was to test different restoration combinations used for constructing fractured endodontically treated incisors by reattaching their fractured fragments. Methods. Seven types of 3-D FEM mathematical root canal-filled models were generated, simulating cases of (OB) reattaching fractured fragments; (CrPL) reattaching fractured fragments + ceramic palatinal laminate; (CmPL) reattaching fractured fragments + composite palatinal laminate; (CM) reattaching fractured fragments + coronal 1/3 of the root was filled using core material; (BP) reattaching fractured fragments + glass fiber post; (CP) composite resin restoration + glass fiber post; and (OC) composite resin restoration. A 100-N static oblique force was applied to the simulated teeth with 135° on the node at 2 mm above the cingulum to analyze the stress distribution at the tooth. Results. For enamel tissue, the highest stress values were observed in model BP, and the lowest stress values were observed in model CmPL. For dentine tissue, the highest stress concentrations were observed around the fracture line for all models. Conclusions. Reattachment of fractured fragments by bonding may be preferred as a restoration option for endodontically treated incisors; also, palatinal laminate decreases the stress values at tooth tissues, especially at the enamel and the fracture line.

scholarly journals Radiographic analysis of 1000 cast posts in Sergipe state, Brazil

2017 ◽  
Vol 46 (5) ◽  
pp. 255-260
Author(s):  
Caroline Garcez MENDONÇA ◽  
José Rogério Vieira de ALMEIDA ◽  
Wilton Mitsunari TAKESHITA ◽  
Fábio MARTINS ◽  
Monica Silveira PAIXÃO
Keyword(s):  
Root Canal ◽  
Endodontically Treated Teeth ◽  
Chi Square ◽  
Root Canal Filling ◽  
Cast Metal ◽  
Restorative Treatment ◽  
Se Brazil ◽  
Chi Square Test ◽  
Metal Post

Abstract Introduction Endodontically treated teeth with extensive coronary destruction require posts and cores to enable prosthetic restoration. Despite the increasing use of prefabricated posts, cast metal posts and cores are still widely used. The quality of the latter is important for the longevity of restorative treatment, and failure can occur if the fundamental principles are not followed. Objective To radiographically evaluate the prosthetic principles of 1000 cast metal post-and-core restorations performed in single-rooted teeth and their coherence with the principles used for their confection. Material and method Digital periapical radiographs of 1000 endodontically treated, single-rooted teeth with cast metal posts and cores were selected from the collection of a radiology clinic (Centro de Imagem, Aracaju/SE, Brazil). The images were analyzed using a measurement software (ImageJ, USA) in accordance with the fundamental prosthetic principles: length and diameter of the post, ratio between post and bone crest, contiguity of post to the root canal, gap between post and the remaining root canal filling, amount of remaining root canal filling, and absence of periapical lesion. The data were qualitatively analyzed, classified into ideal and not ideal, and submitted to the chi-square test (α=0.05). Result Only 6.7% of the cast metal posts analyzed were satisfactorily fabricated. Conclusion Many prosthetic criteria are neglected during the manufacturing of cast metal post and cores, resulting in inadequate work that may compromise the longevity of restorative treatments.

scholarly journals Influence of Zingiber officinale Extract on Push-Out Bond Strength of Glass-Fiber Post

2018 ◽  
Vol 29 (1) ◽  
pp. 93-98 ◽  
Author(s):  
Tânia Mara da Silva ◽  
Virgílio Vilas Boas Fernandes Junior ◽  
Rosemary Soares de Santana ◽  
Renata Marques de Melo Marinho ◽  
Márcia Carneiro Valera ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Zingiber Officinale ◽  
Resin Cement ◽  
Fiber Post ◽  
Ginger Extract ◽  
Etch And Rinse ◽  
Glass Fiber Post ◽  
Push Out

Abstract The aim of this study was to evaluate in vitro the influence of 20% glycolic ginger extract on the bond strength of glass-fiber post cemented with etch-and-rinse or self-etching resin cement. Forty-eight bovine roots were standardized (17±0.5 mm) and randomly divided into two groups, according to irrigant used during biomechanical preparation: NaOCl: 1% sodium hypochlorite and GEN: 20% glycolic ginger extract. Root canal was prepared and randomly assigned to one of two subgroups (n=12), according to luting protocol: self-etching (RelyX U200) and etch-and-rinse (RelyX ARC). After 48 h, the roots were sectioned perpendicularly (4 in cervical third and 3 in middle third) and submitted to push-out bond strength test (50 kgf load cell, 1.0 mm/min). Failure mode was analyzed in SEM and stereomicroscopy. Data were analyzed by three-way ANOVA and Tukey tests (p<0.05). ANOVA revealed that there were no significant differences between U200 (2.01±0.17)B and ARC (1.93±0.12)B in GEN group, and at the cervical third for both irrigants, 2.69±0.16A and 2.54±0.17A, respectively. Middle third showed lower bond strength than cervical third, regardless the irrigant. Overall, the cervical third regardless the irrigant employed and the association between NaOCl and ARC, presented better adhesive performance.

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

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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