Fatigue failure load of immature anterior teeth: influence of different fiber post-core systems

SUMMARY Objective: This article aims to present a fractographic analysis of an anterior tooth restored with a glass fiber post with parallel fiber arrangement, taking into account force vectors, finite element analysis, and scanning electron microscopy (SEM). Methods: A patient presented at the Faculty of Dentistry (Federal University of Santa Maria, Brazil) with an endodontically treated tooth (ETT), a lateral incisor that had a restorable fracture. The treatment was performed, and the fractured piece was analyzed using stereomicroscopy, SEM, and finite element analysis. Results: The absence of remaining coronal tooth structure might have been the main factor for the clinical failure. We observed different stresses actuating in an ETT restored with a fiber post as well as their relationship with the ultimate fracture. Tensile, compression, and shear stresses presented at different levels inside the restored tooth. Tensile and compressive stresses acted together and were at a maximum in the outer portions and a minimum in the inner portions. In contrast, shear stresses acted concomitantly with tensile and compressive stresses. Shear was higher in the inner portions (center of the post), and lower in the outer portions. This was confirmed by finite element analysis. The SEM analysis showed tensile and compression areas in the fiber post (exposed fibers=tensile areas=lingual surface; nonexposed fibers=compression areas=buccal surface) and shear areas inside the post (scallops and hackle lines). Stereomicroscopic analysis showed brown stains in the crown/root interface, indicating the presence of microleakage (tensile area=lingual surface). Conclusion: We concluded that glass fiber posts with parallel fibers (0°), when restoring anterior teeth, present a greater fracture potential by shear stress because parallel fibers are not mechanically resistant to support oblique occlusal loads. Factors such as the presence of remaining coronal tooth structure and occlusal stability assist in the biomechanical equilibrium of stresses that act upon anterior teeth.

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Lithium disilicate glass-ceramic vs translucent zirconia polycrystals bonded to distinct substrates: Fatigue failure load, number of cycles for failure, survival rates, and stress distribution

Journal of the Mechanical Behavior of Biomedical Materials ◽

10.1016/j.jmbbm.2018.12.010 ◽

2019 ◽

Vol 91 ◽

pp. 122-130 ◽

Cited By ~ 10

Author(s):

Gabriel Kalil Rocha Pereira ◽

Priscila Graunke ◽

Angélica Maroli ◽

Camila Pauleski Zucuni ◽

Catina Prochnow ◽

...

Keyword(s):

Stress Distribution ◽

Fatigue Failure ◽

Glass Ceramic ◽

Failure Load ◽

Survival Rates ◽

Lithium Disilicate ◽

Number Of Cycles

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Esthetic Rehabilitation of a Fractured Permanent Maxillary Central Incisor by Reattachment

Journal of Contemporary Dentistry ◽

10.5005/jp-journals-10031-1141 ◽

2016 ◽

Vol 6 (1) ◽

pp. 52-56

Keyword(s):

Case Report ◽

Surface Texture ◽

Simple Procedure ◽

Dental Trauma ◽

Central Incisor ◽

Fiber Post ◽

Root Fracture ◽

Maxillary Central Incisor ◽

Crown Root ◽

Anterior Teeth

ABSTRACT Crown fractures of the anterior teeth are a common form of dental trauma mainly affecting children and adolescents. One of the options for managing crown fractures is the reattachment of the fractured fragment when the tooth fragment is available with minimal or no violation of the biological width. Reattachment of fractured fragments can provide good esthetics, as it maintains the tooth's original anatomic form, color, and surface texture. It also restores function and is a relatively simple procedure. This case report deals with the esthetic management of a crown-root fracture that was successfully treated with endodontic treatment followed by reattachment of fractured fragment with fiber post. How to cite this article Shaikh SAH, Shenoy VU, Sumanthini MV, Pawar RB. Esthetic Rehabilitation of a Fractured Permanent Maxillary Central Incisor by Reattachment. J Contemp Dent 2016;6(1):52-56.

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Management of complicated crown root fracture using pizeo surgery, fiber post and fragment reattachment: A case report

IP Indian Journal of Conservative and Endodontics ◽

10.18231/j.ijce.2021.035 ◽

2021 ◽

Vol 6 (3) ◽

pp. 160-165

Author(s):

Sheena S Raj ◽

A. Devadathan ◽

Baby James ◽

Minimol K Johny ◽

Emil George ◽

...

Keyword(s):

Case Report ◽

Common Type ◽

Fiber Post ◽

Root Fracture ◽

Crown Root ◽

Anterior Teeth ◽

Psychological Reaction ◽

Difficult Procedure ◽

Improved Function ◽

Type Of Fracture

A common type of fracture involving tooth is complicated crown root fracture of anterior teeth. The reattachment of the coronal fragment to the remaining tooth will provide better and long-lasting aesthetics, improved function and a positive psychological reaction. It is a simple and less difficult procedure if the original tooth fragments are retained after fracture. This paper reports about a case of complicated crown root fracture that was treated successfully using broken fragment adhesive reattachment and post placement.

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

Journal of Prosthetic Dentistry ◽

10.1016/s0022-3913(10)60071-6 ◽

2010 ◽

Vol 103 (6) ◽

pp. 330-333 ◽

Cited By ~ 13

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

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Effect of Magnification during Post Space Preparation on Root Cleanness and Fiber Post Bond Strength

Brazilian Dental Journal ◽

10.1590/0103-6440201902662 ◽

2019 ◽

Vol 30 (5) ◽

pp. 491-497

Author(s):

Natércia Rezende da Silva ◽

Monise de Paula Rodrigues ◽

Aline Aredes Bicalho ◽

Raissa Albuquerque de Deus ◽

Priscilla Barbosa Ferreira Soares ◽

...

Keyword(s):

Bond Strength ◽

Root Canal ◽

Resin Cement ◽

Cervical Region ◽

Micro Ct ◽

Fiber Post ◽

Inspection Method ◽

Surgical Microscope ◽

Anterior Teeth ◽

Post Space

Abstract The aim of this study was to evaluate the effect of magnification during post space preparation on root cleanness and on fiber post bond strength. Methods: Thirty human central upper incisors with similar root canal in size and shape were selected, decoronated to 15 mm and endodontically filled. The teeth were assigned into 3 groups (n=10), according to the method of magnification during post space preparation inspection: Control, using naked eye; loupe, using a dental surgical 3x magnifying glass; surgical microscope, using a 6x surgical microscope. The roots were scanned by using micro-CT before and after post space preparation for residue remnants evaluation. Fiber posts were cemented using self-adhesive resin cement (Rely X U200, 3M-ESPE). Two 1-mm-thick slices from the cervical, medium and apical thirds were submitted to a push-out test (PBS). Failures modes were classified. PBS data were analyzed by using two-way ANOVA with repeated measurement and the Tukey test. The significance level was set at 5%. The method of visualization had no effect on PBS (p=0.556). The cervical region had higher values than apical region irrespective of the inspection method (p=0.012). Adhesive failure between the resin cement and dentin was the prevalent failure mode for all groups. Micro-CT analysis showed no difference on root cleanness into the root canal after post space preparation. The use of magnification devices as loupe and microscope while performing post space do not improve the PBS and did not affect sealer remain of decoronated anterior teeth.

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Management of Traumatized Permanent Maxillary Immature Incisor with Oblique Subgingival Crownroot Fracture

Mustansiria Dental Journal ◽

10.32828/mdj.v14i1.760 ◽

2018 ◽

Vol 14 (1) ◽

pp. 58

Author(s):

Dr. Muna S. Khalaf ◽

Dr. Bayan S. Khalaf ◽

Dr. Shorouq M. Abass

Keyword(s):

Treatment Approach ◽

Resin Cement ◽

Permanent Teeth ◽

Treatment Level ◽

Fiber Post ◽

Anterior Teeth ◽

First Choice ◽

Choice Of Treatment ◽

Root Fractures

Background: Trauma to the anterior teeth is a common injury in young children. Themaxillary incisors being the most affected. Although root fractures are rare, theydo occur and were previously and often considered hopeless and were extracted.The time between the injury and the initiation of treatment, level of the fractureline, and stage of root development are some criteria to be considered whenchoosing a treatment approach for a complicated tooth fracture. This case reportdescribes the management of a traumatized immature maxillary central incisorwith Elise class IV fracture with vertical oblique subgingival fracture of the root.Materials and method: Apexification was carried out using biodentine followed byremoval of the fractured segment. A fiber post was cemented in the root canalwith resin cement. The coronal portion of the tooth was restored using anteriorlight cured composite material. The tooth was examined and evaluated after 1week and after 2 months by clinical examination and radiographical evaluation ofroot development.Results: The follow up evaluation revealed clinical and radiographical success.Radiographic view showed continued development in the apex of the root andshowed normal periodontal ligament space and dense lamina dura.Conclusion: Extraction should not be the first choice of treatment for extensivelydamaged young permanent teeth in the anterior region; instead, alternativetreatment modalities must be considered. The traumatized immature tooth wassaved and restored.

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