Use of a CAD/CAM-fabricated glass fiber post and core to restore fractured anterior teeth: A clinical report

2010 ◽  
Vol 103 (6) ◽  
pp. 330-333 ◽  
Author(s):  
Peng Liu ◽  
Xu-Liang Deng ◽  
Xin-Zhi Wang
Keyword(s):  
Glass Fiber ◽  
Clinical Report ◽  
Fiber Post ◽  
Anterior Teeth ◽  
Cad Cam ◽  
Glass Fiber Post ◽  
Post And Core

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.

scholarly journals CAD/CAM Customized Glass Fiber Post and Core With Digital Intraoral Impression: A Case Report

2020 ◽  
Vol Volume 12 ◽  
pp. 17-24 ◽  
Author(s):  
Antonio Libonati ◽  
Virginia Di Taranto ◽  
Gianni Gallusi ◽  
Edoardo Montemurro ◽  
Vincenzo Campanella
Keyword(s):  
Case Report ◽  
Glass Fiber ◽  
Fiber Post ◽  
Cad Cam ◽  
Glass Fiber Post ◽  
Post And Core

scholarly journals Fracture behaviors of maxillary central incisors with flared root canals restored with CAD/CAM integrated glass fiber post-and-core

2019 ◽  
Vol 38 (1) ◽  
pp. 114-119
Author(s):  
Jianliang PANG ◽  
Changfen FENG ◽  
Xiaoru ZHU ◽  
Bing LIU ◽  
Tianzheng DENG ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Fiber Post ◽  
Root Canals ◽  
Fracture Behaviors ◽  
Cad Cam ◽  
Glass Fiber Post ◽  
Post And Core

scholarly journals Stress Generated by Customized Glass Fiber Posts and Other Types by Photoelastic Analysis

2015 ◽  
Vol 26 (3) ◽  
pp. 222-227 ◽  
Author(s):  
Kátia Bosso ◽  
Alcides Gonini Júnior ◽  
Ricardo Danil Guiraldo ◽  
Sandrine Bittencourt Berger ◽  
Murilo Baena Lopes
Keyword(s):  
Glass Fiber ◽  
High Stress ◽  
Resin Cement ◽  
Fiber Post ◽  
Tooth Structure ◽  
Biomechanical Behavior ◽  
Fiber Posts ◽  
Glass Fiber Posts ◽  
Glass Fiber Post ◽  
Post And Core

Endodontic posts are necessary to provide adequate retention and support when no sufficient remaining structure is available to retain the core. There are different materials and techniques to construct post-and-core, but there is no consensus about which one promotes better stress distribution on the remaining tooth structure. This study aimed to quantify and evaluate the distribution of stress in the root produced by customized glass fiber posts compared to different endodontic posts. Twenty-five simulated roots from photoelastic resin were made and divided into 5 groups: CPC, cast post-and-core; SP, screw post; CF, carbon fiber post; GF, glass fiber post; and CGF, customized glass fiber post. After cementing CPC and SP posts with zinc phosphate cement, and CF, GF and CGF posts with resin cement, resin cores were made for groups 2-5. Specimens were evaluated with vertical or 45° oblique loading. To analyze the fringes, the root was divided into 6 parts: palatal cervical, palatal middle, palatal apical, vestibular cervical, vestibular middle, and vestibular apical. The formed fringes were photographed and quantified. Data were recorded and subjected to two-way ANOVA and Tukey's test (5%). SP (1.95±0.60) showed higher stress (p<0.05) compared to the others (CPC-0.52±0.74; CF-0.50±0.75, GF-0.23±0.48 and CGF-0.45±0.83). All posts showed high stress in apical third (CPC-1.40±0.65; SP-2.30±0.44, CF-1.80±0.45, GF-1.20±0.45, CGF-1.70±1.03) Low stress was found in cervical third (CPC-0.20±0.45; CF-0.00±0.00, GF-0.00±0.00, CGF-0.00±0.00), except by SP (1.90±0.65), which showed statistical difference (p<0.05). Customized post showed high stress concentration at the root and conventional glass fiber posts showed more favorable biomechanical behavior.

Research of Stress and Deformation Distributions in Central Incisors Restored with Different Glass Fiber Post Types

2011 ◽  
Vol 295-297 ◽  
pp. 2400-2405
Author(s):  
Zhi Xin Huang ◽  
Cai Fu Qian ◽  
Peng Liu ◽  
Xu Liang Deng ◽  
Qing Cai ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Maximum Stress ◽  
Oral Treatment ◽  
Equivalent Stress ◽  
Three Dimensional ◽  
Fiber Post ◽  
Glass Fiber Post ◽  
Post And Core ◽  
Stress And Deformation ◽  
The One

Three-dimensional digital oral treatment technology based on anatomical features of jaw bone and teeth was applied for modeling. Three dimensional finite element models for the restorative systems with straight glass fiber post, screw glass fiber post and one-piece glass fiber post-and-core were established. Stress and deformation under external bite force were calculated and compared among different post types. Comparing the maximum von Mises equivalent stress in the whole restorative system for the straight post, the screw post and the one-piece glass fiber post-and-core finds that the one-piece glass fiber post-and-core is effective to lower the maximum stress and obtain uniform stress distribution of the teeth. Even in each part of the restorative system like post, crown and root, the maximum stress in the case of one-piece glass fiber post-and-core is still lowest. Using one-piece glass fiber post-and-core, the overall deformation of the restorative system is decreased greatly.

scholarly journals Push-out bond strength of glass fiber posts luted with two resin cements

2017 ◽  
Vol 20 (4) ◽  
pp. 78
Author(s):  
Blanca Liliana Torres Léon ◽  
Vitor Lopes Franco ◽  
Emily Vivianne Freitas Silva ◽  
Leonardo Muniz ◽  
Fernando Carneiro Ribeiro
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Fiber Post ◽  
Resin Cements ◽  
Anterior Teeth ◽  
Fiber Posts ◽  
Post And Core Technique ◽  
Glass Fiber Posts ◽  
Glass Fiber Post ◽  
Push Out

<p class="CorpoA"><strong>Objective.</strong> To evaluate the bond strength of a prefabricated glass fiber post to the root dentin with two resin cements using the push-out test. <strong>Material and Methods.</strong> Thirty fiber posts (White Post ECD) were cemented in human endodontically treated anterior teeth with two resin cements (n=15): Relyx<sup>TM </sup>ARC and AllCem. The roots were transversely sectioned and divided in cervical, middle and apical thirds after 48 h of cementation. The specimens' retention was tested by push-out method. The results were analyzed by 2-way ANOVA and Tukey’s test (<em>p</em>&lt;0.05). <strong>Results.</strong> There were no significant differences in the bond strength between the resin cements. The bond strength was higher in cervical third than in middle and apical thirds for both resin cements. It was observed higher percentages of adhesive failures followed by mixed. <strong>Conclusions.</strong> Both resin cements are indicated in the cementation of glass fiber post.</p><p class="CorpoA"><strong>Keywords</strong></p><p class="CorpoA">Dental prosthesis; Post and core technique; Biomechanical phenomena.</p>

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.

scholarly journals The effect of type post, crown, and ferrule presence on stress distribution of maxillary central incisors with weakened roots: Finite Element Analysis

2013 ◽  
Vol 1 (2) ◽  
pp. 154 ◽  
Author(s):  
Paulo César de Freitas Santos-Filho ◽  
Crisnicaw Verissimo ◽  
Cristhiane Leão Queiroz ◽  
Rebeca Carniello Saltarelo ◽  
Carlos José Soares ◽  
...  
Keyword(s):  
Stress Distribution ◽  
Glass Fiber ◽  
Numerical Models ◽  
Central Incisor ◽  
Fiber Post ◽  
Maxillary Central Incisor ◽  
Biomechanical Behavior ◽  
Glass Fiber Post ◽  
Root Dentin ◽  
Post And Core

The aim of this study was to evaluate the biomechanical behavior, by means FEA, of maxillary central incisor with weakened roots restored with different posts, crowns and ferrule presence. A digital image of an intact maxillary central incisor section plane around the alveolar bone was obtained in order to build the model of sound tooth. A sound tooth and eight two-dimensional numerical models were generated from the protocol of image processing. The studied factors were: crown type - metal-ceramic crown (MC) and alumina-reinforced ceramic (CC); post type - glass fiber post (GFP) and cast post and core (CPC); and ferrule - absence of ferrule (AFE) and 2,0 mm ferrule (FE2). A 2N static and oblique load with a 135° inclination to the tooth longitudinal axis was applied at the level of palatal surface of the crown. The displacement was restricted and stress of tensile and compression within the tooth structure was recorded. Cast post and core models concentrated stresses in post dentin interface and glass fiber post models had homogeneous stresses distribution within the root dentin similar to sound tooth. The restorative complex GFP-CC concentrated higher stress in coping than GFP-MC, both models with or without ferrule. The ferrule presence improved the stress distribution regardless of the crown and post types. Therefore, cast post-and-cores concentrate too much stresses within a root dentin and post interface; glass fiber post has more homogeneous stress distribution in dentin than cast post-and-cores; the presence of 2 mm ferrule improves the mechanical behavior.

Mechanical properties and superficial characterization of a milled CAD-CAM glass fiber post

2018 ◽  
Vol 82 ◽  
pp. 187-192 ◽  
Author(s):  
George Hebert Ruschel ◽  
Érica Alves Gomes ◽  
Yara Terezinha Silva-Sousa ◽  
Rafaela Giedra Pirondi Pinelli ◽  
Manoel Damião Sousa-Neto ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Fiber Post ◽  
Cad Cam ◽  
Glass Fiber Post

scholarly journals Comparison of compressive strength among three different intracanal post materials in primary anterior teeth: An in vitro study

2016 ◽  
Vol 10 (04) ◽  
pp. 464-468 ◽  
Author(s):  
Nilavu Nilavarasan ◽  
R. Hemalatha ◽  
R. Vijayakumar ◽  
V. S. Hariharan
Keyword(s):  
Compressive Strength ◽  
Glass Fiber ◽  
Fracture Resistance ◽  
Fiber Post ◽  
Group Iii ◽  
Anterior Teeth ◽  
Group I ◽  
Omega Loop ◽  
Glass Fiber Post ◽  
Group Ii

ABSTRACT Objective: The objective of our study was to compare the fracture resistance and the mode of failure among three different post materials in primary anterior teeth. Materials and Methods: A total of sixty extracted primary anterior teeth were selected for the study. The samples were divided into three groups of twenty teeth each: Group I (Ribbond), Group II (Omega loop), and Group III (Glass fiber post). Pulp therapy was followed by intracanal post and crown buildup. The samples were mounted in self-cure acrylic and subjected to compressive strength test using universal testing machine (Instron). The maximum force at which the tooth fractured was recorded. Results: The values were subjected to one-way analysis of variance. The mean compressive strength values of Ribbond, omega loop, and glass fiber post were found to be 83.25 N, 61.60 N, and 75.55 N, respectively. The P value was found to be 0.220. Conclusion: Group I (Ribbond) showed the highest fracture resistance values followed by Group III (Glass fiber post) and Group II (Omega loop). Although there is difference in mean values, they were nonsignificant.

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