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Dederichs M, Joedecke P, Weber CT, Guentsch A. Functional Load Capacity of Teeth with Reduced Periodontal Support: A Finite Element Analysis. Bioengineering (Basel) 2023; 10:1330. [PMID: 38002454 PMCID: PMC10669356 DOI: 10.3390/bioengineering10111330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/25/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
The purpose of this study was to investigate the functional load capacity of the periodontal ligament (PDL) in a full arch maxilla and mandible model using a numerical simulation. The goal was to determine the functional load pattern in multi- and single-rooted teeth with full and reduced periodontal support. CBCT data were used to create 3D models of a maxilla and mandible. The DICOM dataset was used to create a CAD model. For a precise description of the surfaces of each structure (enamel, dentin, cementum, pulp, PDL, gingiva, bone), each tooth was segmented separately, and the biomechanical characteristics were considered. Finite Element Analysis (FEA) software computed the biomechanical behavior of the stepwise increased force of 700 N in the cranial and 350 N in the ventral direction of the muscle approach of the masseter muscle. The periodontal attachment (cementum-PDL-bone contact) was subsequently reduced in 1 mm increments, and the simulation was repeated. Quantitative (pressure, tension, and deformation) and qualitative (color-coded images) data were recorded and descriptively analyzed. The teeth with the highest load capacities were the upper and lower molars (0.4-0.6 MPa), followed by the premolars (0.4-0.5 MPa) and canines (0.3-0.4 MPa) when vertically loaded. Qualitative data showed that the areas with the highest stress in the PDL were single-rooted teeth in the cervical and apical area and molars in the cervical and apical area in addition to the furcation roof. In both single- and multi-rooted teeth, the gradual reduction in bone levels caused an increase in the load on the remaining PDL. Cervical and apical areas, as well as the furcation roof, are the zones with the highest functional stress. The greater the bone loss, the higher the mechanical load on the residual periodontal supporting structures.
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Affiliation(s)
- Marco Dederichs
- Policlinic of Prosthetic Dentistry and Material Science, Centre for Dental Medicine, Jena University Hospital, D-07743 Jena, Germany;
| | - Paul Joedecke
- Department of Engineering and Industrial Design, Magdeburg-Stendal University of Applied Sciences, D-39114 Magdeburg, Germany (C.-T.W.)
| | - Christian-Toralf Weber
- Department of Engineering and Industrial Design, Magdeburg-Stendal University of Applied Sciences, D-39114 Magdeburg, Germany (C.-T.W.)
| | - Arndt Guentsch
- School of Dentistry, Marquette University, Milwaukee, WI 53233, USA
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Ince Yusufoglu S, Saricam E, Ozdogan MS. Finite Element Analysis of Stress Distribution in Root Canals When Using a Variety of Post Systems Instrumented with Different Rotary Systems. Ann Biomed Eng 2023:10.1007/s10439-023-03145-w. [PMID: 36705864 DOI: 10.1007/s10439-023-03145-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 01/11/2023] [Indexed: 01/28/2023]
Abstract
It is very important for clinicians to provide restorative treatments that provide durability for endodontically treated teeth. Trauma, occlusal premature contact, and features of teeth are some of the issues that can cause vertical root fractures (VRFs) in root canal-treated teeth. The aim of this 3-D study was to compare stress distribution on mandibular premolar teeth when using a variety of post designs instrumented with different rotary systems. Six mandibular premolar teeth were instrumented with the following tools: ProTaper Next, WaveOne (WO), Reciproc (R), ReciprocBlue (RB), F6-Skytaper, and TF-Adaptive. Teeth were scanned using cone beam computed tomography (CBCT) and the images were transferred to the Catia V5R25 software. Data were recorded in a stereolithography (STL) format. Four different post systems were used, fabricated from metal, fiber, zirconia, and titanium, respectively. Dentin, gutta, post, core, and crown models were added to the solid model. ANSYS V17.2 finite element analysis (FEA) software was used to determine stress distribution on each assembly. Finite analysis models were created that allowed for the calculation of stress distribution of 250-N loading at a 45° angle and vertical in relation to the roots. The maximum principal stress and von Mises values were higher under oblique loading on the roots. The F6-Skytaper and WO systems showed lower stress than other systems. The TF-Adaptive instrument showed higher stress distribution than the other models. Fiber and titanium posts showed lower stress than others. The F6-Skytaper, R, and RB instruments were found to be most effective in terms of displacement of the crown, resulting in the lowest stress values. Fiber and titanium posts showed better results than other post systems, while root canals instrumented with the F6-Skytaper and WO instruments were less likely to result in root fractures.
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Affiliation(s)
- Selen Ince Yusufoglu
- Department of Endodontics, Faculty of Dentistry, Ankara Yıldırım Beyazit University, Ankara, Turkey.
| | - Esma Saricam
- Department of Endodontics, Faculty of Dentistry, Ankara Yıldırım Beyazit University, Ankara, Turkey
| | - Mahmut Sertac Ozdogan
- Department of Prosthodontics, Faculty of Dentistry, Ankara Yıldırım Beyazit University, Ankara, Turkey
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Muacevic A, Adler JR, Kanout S. Three-Dimensional Finite Element Study of Endodontically Treated Maxillary Central Incisors Restored Using Different Post and Crown Materials. Cureus 2023; 15:e33778. [PMID: 36798627 PMCID: PMC9925666 DOI: 10.7759/cureus.33778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2023] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND/PURPOSE Restoring endodontically treated teeth is a common problem in dental practice. Post and core restorations are one of the major options in the rehabilitation of these teeth. However, there is no final decision regarding the best material or technique to be used with these restorations. So, this study aimed to evaluate the effect of different post and crown materials on the biomechanical behavior of restored maxillary central incisor using the finite element method. MATERIALS AND METHODS A total of 10 3D models of endodontically treated maxillary central incisors restored with two prefabricated posts and three custom-made posts were modeled and grouped according to post material (gold, nickel-chrome, zirconia, and glass fiber) and crown material (lithium disilicate, and zirconia). Finite element analysis was conducted, and stress distribution was evaluated using von Mises criteria. RESULTS Both crown materials showed stress concentration at the force application site mainly on the intaglio palatal surface of the crown. However, more stress values were observed within zirconia crowns. All posts showed stress concentration at their buccal sides. However, more stress values were observed in zirconia and metal cast posts compared to glass fiber posts that transfer more stress to root dentin. CONCLUSIONS Post and crown materials affect the stress distribution in the tooth-restoration complex. Using high elastic modulus posts slightly decreased stress in root dentin despite concentrating more stress within their structure. However, glass fiber posts resulted in more homogenous stress distribution in the tooth-restoration complex. Crown material did not influence the stress distribution in root dentin. Custom-made posts decreased stress within crowns, regardless of the crown material. However, more stress values were observed within zirconia crowns. Custom-made zirconia posts and cores showed a similar stress distribution as non-precious metal cast posts, so they may be used as a suitable option where esthetic is desirable.
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Han T, Chen K, Cao R, Zheng T, Chen Z, Zhang X, Yan X. Influence of post-core material and cement peculiarities on stress of post-cores under ultrasonic vibration: a three-dimensional finite element analysis. Int Endod J 2020; 53:1696-1704. [PMID: 32781493 DOI: 10.1111/iej.13388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 08/06/2020] [Accepted: 08/07/2020] [Indexed: 11/30/2022]
Abstract
AIM To analyse the effect of post-core, and cement materials and thickness of the cement lute on the stress in post-core systems under ultrasonic vibration at different frequencies and amplitudes using three-dimensional finite element analysis. METHODOLOGY Eight three-dimensional finite element models of a maxillary central incisor with post-cores were established. Two post-core materials (Au and Ni-Cr alloys), two cements (glass ionomer (GI) and zinc phosphate (ZP)) and two cement layer thicknesses (50 and 150 μm) were considered. Vibration loads were applied near the neck on the buccal side of the core at frequencies of 10-40 kHz and amplitudes of 10-50 μm. The maximum shear stress of the cement layer and maximum principal stress of the roots and their distributions were investigated. RESULTS The stresses on cements and roots increased with an increase in the frequency and amplitude of the vibration load and elastic modulus of the cements, and decreased with increasing thickness of the cement layer and elastic modulus of the post-core. Maximum cement stress was observed on the contralateral upper part of the loading side, whereas the maximum root stress was found on the ferrule where the load was applied. CONCLUSIONS In this simulated model, the frequency and amplitude of ultrasound needed to remove a post-core were positively related to the elastic modulus of the post-core and thickness of the cement layer and negatively related to the elastic modulus of the cements.
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Affiliation(s)
- T Han
- The VIP Department, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - K Chen
- Department of Endodontics, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - R Cao
- School of Stomatology, China Medical University, Shenyang, China
| | - T Zheng
- The VIP Department, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Z Chen
- The VIP Department, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - X Zhang
- Center of Implant Dentistry, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - X Yan
- The VIP Department, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
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Haralur SB. Fracture resistance of endodontically treated teeth restored with various esthetic posts. Technol Health Care 2020; 29:243-252. [PMID: 32568136 DOI: 10.3233/thc-202228] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Dental esthetic materials are constantly introduced to meet the increasing esthetic demand in contemporary dental practice. OBJECTIVE To test the fracture resistance of endodontically treated teeth (ETT) restored with different esthetic post materials like fiber-reinforced composite post (FRC), polyether ether ketone (PEEK), and polymer infiltrated ceramic (PIC). METHODS Thirty-six human root canal treated single-rooted premolar teeth were decoronated 3 mm above the cemento-enamel junction and prepared to receive the post. They were randomly divided into three groups (n= 12) to be restored with FRC, PEEK, and PIC. After appropriate surface treatment, they were cemented with self-adhesive luting cement and restored with full veneer crowns. The samples were thermocycled, subjected to a compressive static load at 45∘ angulation until fracture. Obtained data were analyzed by one-way ANOVA and Tukey's HSD post hoc comparison test. RESULTS The results indicate that the ETT restored with PEEK post had the maximum fracture load (1929.94 N), followed by PIC endodontic post group (1810.65N), and FRC post (1715.68N). Meanwhile, ETT restored with FRC showed a predominantly favorable fracture, whereas PEEK restored teeth had a more unfavorable fracture. CONCLUSION Of all the esthetic post materials, the group for which PEEK endodontic post was used displayed higher fracture resistance.
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Liu ZY, Zhao L, Yang LY, Gao X. [Three-dimensional finite element analysis of different endodontic access methods and full crown restoration in the maxillary central incisor]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2019; 37:642-647. [PMID: 31875444 DOI: 10.7518/hxkq.2019.06.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVE This study evaluates the effects of different endodontic access methods and full-ceramic crown on the stress distribution in the maxillary central incisor by using three-dimensional finite element analysis. METHODS Computed tomography scans of the maxillary central incisor were used to construct a three-dimensional finite element model of the maxillary central incisor. According to the different methods of endodontic and the prosthetic treatments, four models were established, namely, group A (traditional access cavity preparation with resin filling), group B (traditional access cavity preparation restored full-ceramic crown), group C (minimally invasive endodontics with resin filling) and group D (minimally invasive endodontics restored full-ceramic crown). A static force of 100 N and a direction of 45° was applied to the long axis of the tooth at the junction of the incisal section one-third and middle section one-third. The maximum principal stress, the von Mises stress and the modified von Mises stress of the tooth tissue were analyzed using the finite-element analysis software. RESULTS 1) Stress peaks: the stress peaks of the maximum principal stress, the von Mises stress and the modified von Mises in group A were the largest, except that the stress peak of von Mises stress in group D was slightly lower than that in group C. The stress peaks of the maximum principal stress and the modified von Mises in group C were the lowest. The stress peaks of the maximum principal stress and the modi-fied von Mises stress in group D were lower than those in groups A and B. 2) Stress distribution: compared with group A, the stress distribution of cervical dentin and the area of stress concentration in group C was lower and smaller. In the root dentin, the stress distribution in group C was more uniform than that in group A, and the stress was dispersed to several areas of the root apex. After crown restoration, no significant difference was observed in stress distribution between groups B and D in the root region. The stress distribution state of group B was not significantly different from that of group A. No significant difference was observed in the stress distribution state between groups D and C. CONCLUSIONS 1) From the perspective of biomechanics, the minimally invasive access was adopted for the maxillary central incisor. 2) Full crown restoration is recommended after traditional access cavity preparation. No obvious advantage is observed in stress analysis for minimally invasive endodontics-restored full-ceramic crown.
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Affiliation(s)
- Zi-Yan Liu
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Jinan 250012, China;Dept. of Prosthodontics, School & Hospital of Stomatology, Shandong University, Jinan 250012, China
| | - Ling Zhao
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Jinan 250012, China;Dept. of Prosthodontics, School & Hospital of Stomatology, Shandong University, Jinan 250012, China
| | - Li-Yuan Yang
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Jinan 250012, China;Dept. of Prosthodontics, School & Hospital of Stomatology, Shandong University, Jinan 250012, China
| | - Xu Gao
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Jinan 250012, China;Dept. of Prosthodontics, School & Hospital of Stomatology, Shandong University, Jinan 250012, China
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YU QIUDONG, ZHENG SHUXIAN, WANG WEIZHEN. CUSTOMIZED POST-AND-CORE DESIGN AND STRESS ANALYSIS FOR POSTERIOR TOOTH PROSTHESIS. J MECH MED BIOL 2019; 19:1940038. [DOI: 10.1142/s0219519419400384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2023]
Abstract
A post-and-core crown is widely used in prosthetic dentistry; however, in clinical treatment, it easily causes root fracture and tooth penetration. To address these problems, this study aimed to present a customized post-and-core design for the posterior tooth implant. First, a residual tooth and its root canal were reconstructed. Then, the root canal surface was extracted, the surface curvature and length parameters were defined, and the customized post-and-core design was developed. Finally, the tooth, root canal, and post-and-core with different implant lengths in five masticatory directions were analyzed using finite element analysis to evaluate the stress distribution. The results showed that, with the similar shape of the post-and-core structure and the root canal, the tooth stress trend was uniform. When the length of the post-and-core structure [Formula: see text] was 0[Formula: see text]mm, that is, it was two thirds of the root canal length, the root canal stress was minimum. Therefore, the customized design of the post-and-core structure could well adapt to any kind of root canal, and the length of the post-and-core structure [Formula: see text] provided guidance for the post-and-core crown prosthesis in clinic.
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Affiliation(s)
- QIUDONG YU
- Department of Computer and Information Engineering, Tianjin Agriculture University, Tianjin 300384, P. R. China
- College of Water Resources & Civil Engineering, China Agricultural University, Beijing 100083, P. R. China
| | - SHUXIAN ZHENG
- Tianjin Key Laboratory of Equipment Design and Manufacturing Technology, Tianjin University, Tianjin 300354, P. R. China
| | - WEIZHEN WANG
- Tianjin Key Laboratory of Equipment Design and Manufacturing Technology, Tianjin University, Tianjin 300354, P. R. China
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de Andrade GS, Tribst JPM, Dal Piva AMDO, Bottino MA, Borges ALS, Valandro LF, Özcan M. A study on stress distribution to cement layer and root dentin for post and cores made of CAD/CAM materials with different elasticity modulus in the absence of ferrule. J Clin Exp Dent 2019; 11:e1-e8. [PMID: 30697387 PMCID: PMC6343998 DOI: 10.4317/jced.55295] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 12/17/2018] [Indexed: 11/05/2022] Open
Abstract
Background To evaluate the stress distribution in a maxillary central incisor with different post and cores made of six CAD/CAM materials with different elastic modulus in the absence of ferrule using the finite element analysis. Material and Methods A three-dimensional endodontically treated maxillary central incisor restored with an all-ceramic crown was modelled in Rhinoceros (5.0 SR8, McNeel). The geometries were analyzed in ANSYS 17.2 (ANSYS Inc.) considering isotropic, homogeneous, linearly elastic materials with perfectly bonded contacts. The elastic moduli (E) of the post-and-cores defined the groups to be compared: nanoceramic resin (E=12.8GPa); composite resin (E=16GPa); hybrid ceramic (E=34.7GPa); lithium disilicate (E=95GPa); titanium (Ti-Al6-V4) (E=112GPa); and Y-TZP material (E=209.3GPa). The set was constrained in the cortical bone and loaded (45°/100 N) on the incisor palatine face. Stress distribution was analyzed by Maximum Principal Stress criteria for the crown-core cement line, Post-and-core's cement line, Post-and-core system and Dentin. Results The stress distribution at the crown-core cement line (11.4 - 13.2 MPa) was inversely proportional to the increase of the elastic modulus of the post-core approaches, while it was direct proportional on the post-and-core (4.7 - 40 MPa) and cement line (4.1 - 6.2 MPa). Stress distribution on the dentin was similar for all groups (24.7 - 25.3). Conclusions Post-and-core made by CAD/CAM seems to be an efficient treatment alternative, since it is a conservative approach, promotes better aesthetic quality and it allows the control of the cement line thickness. Key words:Endodontically treated teeth, Post-and-core technique, Ceramic crown, Finite element analysis, Biomimetics.
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Affiliation(s)
- Guilherme-Schmidt de Andrade
- DDs, MSc Student in Prosthodontics, Department of Dental Materials and Proshodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos / SP, Brazil. Address: Av Engenheiro Francisco José Longo, 777, Jardim São Dimas, São José dos Campos, São Paulo, Brazil
| | - João-Paulo-Mendes Tribst
- DDs, MSc, PhD Student, Department of Dental Materials and Proshodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos / SP, Brazil. Address: Av Engenheiro Francisco José Longo, 777, Jardim São Dimas, São José dos Campos, São Paulo, Brazil
| | - Amanda-Maria-de Oliveira Dal Piva
- DDs, MSc, PhD Student, Department of Dental Materials and Proshodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos / SP, Brazil. Address: Av Engenheiro Francisco José Longo, 777, Jardim São Dimas, São José dos Campos, São Paulo, Brazil
| | - Marco-Antonio Bottino
- DDs, MSc, PhD, Professor, Department of Dental Materials and Proshodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos / SP, Brazil. Address: Av Engenheiro Francisco José Longo, 777, Jardim São Dimas, São José dos Campos, São Paulo, Brazil
| | - Alexandre-Luiz-Souto Borges
- DDs, MSc, PhD, Adjunct Professor, Department of Dental Materials and Proshodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos / SP, Brazil. Address: Av Engenheiro Francisco José Longo, 777, Jardim São Dimas, São José dos Campos, São Paulo, Brazil
| | - Luiz-Felipe Valandro
- DDs, MSc, PhD, Professor, Federal University of Santa Maria, Prosthodontic Unit, Faculty of Odontology, Santa Maria, Rio Grande do Sul State, Brazil
| | - Mutlu Özcan
- DDs, MSc, PhD, Professor, University of Zurich, Dental Materials Unit, Center for Dental and Oral Medicine, Clinic for Fixed and Removable Prosthodontics and Dental Materials Science, Zurich, Switzerland
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da Fonseca GF, de Andrade GS, Dal Piva AMDO, Tribst JPM, Borges ALS. Computer-aided design finite element modeling of different approaches to rehabilitate endodontically treated teeth. J Indian Prosthodont Soc 2018; 18:329-335. [PMID: 30449961 PMCID: PMC6180740 DOI: 10.4103/jips.jips_168_18] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 08/01/2018] [Indexed: 11/18/2022] Open
Abstract
Background: Carious lesions and dental fractures cause weakening in the dental structure. In these situations, endodontic treatment and prosthetic rehabilitation using an intraradicular post are indicated. However, the postspace preparation of the root canal further weakens the dental remnant, especially if there is no ferrule present. This study aimed to evaluate the stress distribution in endodontically treated upper premolars treated with different rehabilitation approaches. Materials and Methods: An endodontically treated first upper premolar was modeled for finite element analysis. Three different approaches were carried out on this model: rehabilitation with fiberglass post (FCP), endocrown (ECW), or buildup. The models were exported in STEP format to the analysis software (ANSYS 17.2, ANSYS Inc., Houston, TX, USA). The solids were considered isotropic, homogeneous, and linearly elastic. A mechanical, structural static analysis was used as the criterion of maximum principal stress to show regions under tensile stress to evaluate the stress distribution in the restoration, cementation line, and root. A load of 400 N (90°) was applied to the lingual triangular ridge. The values of maximum principal stress in MPa were evaluated through colorimetric graphs. Results: Similar stress concentration was observed for all groups. However, the ECW group presented higher values in the restoration/cement interface and root dentin. Conclusions: All the treatment modalities had favorable mechanical behavior to support the masticatory loads; nevertheless, the ECW group presented a higher risk of detachment failure.
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Affiliation(s)
- Gabriela Fernandes da Fonseca
- Dental Materials and Proshodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos/SP, Brazil
| | - Guilherme Schmitt de Andrade
- Dental Materials and Proshodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos/SP, Brazil
| | - Amanda Maria de Oliveira Dal Piva
- Dental Materials and Proshodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos/SP, Brazil
| | - João Paulo Mendes Tribst
- Dental Materials and Proshodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos/SP, Brazil
| | - Alexandre Luiz Souto Borges
- Dental Materials and Proshodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos/SP, Brazil
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Homaei E, Jin XZ, Pow EHN, Matinlinna JP, Tsoi JKH, Farhangdoost K. Numerical fatigue analysis of premolars restored by CAD/CAM ceramic crowns. Dent Mater 2018; 34:e149-e157. [PMID: 29653725 DOI: 10.1016/j.dental.2018.03.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 11/13/2017] [Accepted: 03/23/2018] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The purpose of this study was to estimate the fatigue life of premolars restored with two dental ceramics, lithium disilicate (LD) and polymer infiltrated ceramic (PIC) using the numerical method and compare it with the published in vitro data. METHODS A premolar restored with full-coverage crown was digitized. The volumetric shape of tooth tissues and crowns were created in Mimics®. They were transferred to IA-FEMesh for mesh generation and the model was analyzed with Abaqus. By combining the stress distribution results with fatigue stress-life (S-N) approach, the lifetime of restored premolars was predicted. RESULTS The predicted lifetime was 1,231,318 cycles for LD with fatigue load of 1400N, while the one for PIC was 475,063 cycles with the load of 870N. The peak value of maximum principal stress occurred at the contact area (LD: 172MPa and PIC: 96MPa) and central fossa (LD: 100MPa and PIC: 64MPa) for both ceramics which were the most seen failure areas in the experiment. In the adhesive layer, the maximum shear stress was observed at the shoulder area (LD: 53.6MPa and PIC: 29MPa). SIGNIFICANCE The fatigue life and failure modes of all-ceramic crown determined by the numerical method seem to correlate well with the previous experimental study.
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Affiliation(s)
- Ehsan Homaei
- Toos Dental Lab- Sahebkar, Mashhad, Iran; Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran; Dental Materials Science, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Xiao-Zhuang Jin
- Dental Materials Science, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Edmond Ho Nang Pow
- Oral Rehabilitation, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Jukka Pekka Matinlinna
- Dental Materials Science, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - James Kit-Hon Tsoi
- Dental Materials Science, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Khalil Farhangdoost
- Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran.
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Machado AC, Soares CJ, Reis BR, Bicalho AA, Raposo L, Soares PV. Stress-strain Analysis of Premolars With Non-carious Cervical Lesions: Influence of Restorative Material, Loading Direction and Mechanical Fatigue. Oper Dent 2017; 42:253-265. [PMID: 28467256 DOI: 10.2341/14-195-l] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Noncarious cervical lesions (NCCLs) are characterized by a loss of dental structure at the cementoenamel junction (CEJ) caused by stress, biocorrosion, and attrition. Variations in occlusal loading can promote different stress and strain patterns on the CEJ. Restoration of NCCLs is part of lesion management; however, there is still no conclusive restorative protocol for NCCLs. This study aimed to evaluate the stress and strain distribution of maxillary premolars with NCCLs according to three factors: 1) restorative technique; 2) direction of occlusal loading; and 3) mechanical fatigue. Three-dimensional (3D) finite element analysis (FEA) and strain gauge testing were used to assess stress and strain, respectively. 3D-FEA orthotropic, linear, and elastic models were generated: sound tooth (SO); unrestored NCCL; or NCCL restored with glass ionomer; flowable composite resin; nanofilled composite resin (CR); lithium disilicate ceramic; and nanofilled composite resin core associated with a lithium disilicate laminate (CL). A 150-N compressive static load was applied in two conditions: axially in both cusps (Al); and at a 45° angle to the long axis of the tooth applied to the palatine cusp (Ol). For the experimental tests, specimens were treated as described previously, and one strain gauge was attached to the buccal surface of each tooth to record tooth strains before and after cyclic loading (200,000 cycles, 50 N). FEA showed that the association of NCCL and Ol resulted in higher stress values. CR and CL restorations showed the closest biomechanical behavior to SO for both loading types. Loaded Al or Ol specimens showed higher strain values after mechanical fatigue. Lower stress and strain were observed with Al when compared with Ol. The restoration of NCCLs with composite resin only or associated with ceramic laminates seems to be the best approach because the results for those groups were similar in biomechanical behaviors to sound teeth.
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Biomechanical Evaluation of a Tooth Restored with High Performance Polymer PEKK Post-Core System: A 3D Finite Element Analysis. BIOMED RESEARCH INTERNATIONAL 2017; 2017:1373127. [PMID: 28386547 PMCID: PMC5366183 DOI: 10.1155/2017/1373127] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 03/05/2017] [Indexed: 11/17/2022]
Abstract
The aim of this study was to evaluate the biomechanical behavior and long-term safety of high performance polymer PEKK as an intraradicular dental post-core material through comparative finite element analysis (FEA) with other conventional post-core materials. A 3D FEA model of a maxillary central incisor was constructed. A cyclic loading force of 50 N was applied at an angle of 45° to the longitudinal axis of the tooth at the palatal surface of the crown. For comparison with traditionally used post-core materials, three materials (gold, fiberglass, and PEKK) were simulated to determine their post-core properties. PEKK, with a lower elastic modulus than root dentin, showed comparably high failure resistance and a more favorable stress distribution than conventional post-core material. However, the PEKK post-core system showed a higher probability of debonding and crown failure under long-term cyclic loading than the metal or fiberglass post-core systems.
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13
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LEMOS CAA, ALMEIDA DADF, BATISTA VEDS, MELLO CC, VERRI FR, PELLIZZER EP, MAZARO JVQ. Influence of diameter and intraradicular post in the stress distribution. Finite element analysis. REVISTA DE ODONTOLOGIA DA UNESP 2016. [DOI: 10.1590/1807-2577.21215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
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.
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Gomes EA, Diana HH, Oliveira JS, Silva-Sousa YTC, Faria ACL, Ribeiro RF. Reliability of FEA on the Results of Mechanical Properties of Materials. Braz Dent J 2016; 26:667-70. [PMID: 26963214 DOI: 10.1590/0103-6440201300639] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 12/01/2015] [Indexed: 11/22/2022] Open
Abstract
The present study evaluated the reliability of FEA on the results of different mechanical properties (E and v) of materials. Two 3D models of a maxillary canine with endodontic treatment, intracanal post, composite resin core and restored with porcelain-fused-to-metal crown were generated according to micro-CT images. Two groups with different E and ν values for porcelain, metal coping alloy, resin cement and composite resin were established. The materials' properties for group GL were based on literature data, while for group GIE the impulse excitation technique was used. A load of 180 N was applied at 45° on the incisal third of the lingual surface of the canine tooth. All models were supported by the periodontal ligament (x=y=z=0). The von Mises stress (VMS) was calculated. The stress values revealed differences between the groups for both VMS distribution and value. The porcelain (GL: 5.966 MPa; GIE: 7.478 MPa), metal coping (GL: 3.811 MPa; GIE: 0.973 MPa) and core (GL: 4.771 MPa; GIE: 0.026 MPa) were significantly affected. In conclusion, this study showed that the determination of mechanical properties (E and ν) of materials is essential for the reliability on the results of FEA.
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Affiliation(s)
- Erica Alves Gomes
- Dental School, UNAERP - Universidade de Ribeirão Preto, Ribeirão Preto, SP, Brazil
| | - Hugo Henrique Diana
- Dental School, UNAERP - Universidade de Ribeirão Preto, Ribeirão Preto, SP, Brazil
| | | | | | - Adriana Cláudia Lapria Faria
- Department of Dental Materials and Prosthodontics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Ricardo Faria Ribeiro
- Department of Dental Materials and Prosthodontics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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15
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Soares PV, Machado AC, Zeola LF, Souza PG, Galvão AM, Montes TC, Pereira AG, Reis BR, Coleman TA, Grippo JO. Loading and composite restoration assessment of various non-carious cervical lesions morphologies - 3D finite element analysis. Aust Dent J 2015; 60:309-16. [DOI: 10.1111/adj.12233] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/02/2014] [Indexed: 11/28/2022]
Affiliation(s)
- PV Soares
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - AC Machado
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - LF Zeola
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - PG Souza
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - AM Galvão
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - TC Montes
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - AG Pereira
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - BR Reis
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - TA Coleman
- Shaftsbury Medical Building; Shaftsbury Vermont USA
| | - JO Grippo
- Department of Biomedical Engineering; Western New England University; Springfield Massachusetts USA
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16
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Modeling of damage driven fracture failure of fiber post-restored teeth. J Mech Behav Biomed Mater 2015; 49:277-89. [PMID: 26056997 DOI: 10.1016/j.jmbbm.2015.05.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 04/25/2015] [Accepted: 05/07/2015] [Indexed: 11/23/2022]
Abstract
Mechanical failure of biomaterials, which can be initiated by either violent force, or progressive stress fatigue, is a serious issue. Great efforts have been made to improve the mechanical performances of dental restorations. Virtual simulation is a promising approach for biomechanical investigations, which presents significant advantages in improving efficiency than traditional in vivo/in vitro studies. Over the past few decades, a number of virtual studies have been conducted to investigate the biomechanical issues concerning dental biomaterials, but only with limited incorporation of brittle failure phenomena. Motivated by the contradictory findings between several finite element analyses and common clinical observations on the fracture resistance of post-restored teeth, this study aimed to provide an approach using numerical simulations for investigating the fracture failure process through a non-linear fracture mechanics model. The ability of this approach to predict fracture initiation and propagation in a complex biomechanical status based on the intrinsic material properties was investigated. Results of the virtual simulations matched the findings of experimental tests, in terms of the ultimate fracture failure strengths and predictive areas under risk of clinical failure. This study revealed that the failure of dental post-restored restorations is a typical damage-driven continuum-to-discrete process. This approach is anticipated to have ramifications not only for modeling fracture events, but also for the design and optimization of the mechanical properties of biomaterials for specific clinically determined requirements.
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Oyar P. The effects of post-core and crown material and luting agents on stress distribution in tooth restorations. J Prosthet Dent 2014; 112:211-9. [PMID: 24560984 DOI: 10.1016/j.prosdent.2013.10.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 10/02/2013] [Accepted: 10/02/2013] [Indexed: 11/15/2022]
Affiliation(s)
- Perihan Oyar
- Assistant Professor, Dental Prosthetics Technology Programme, School of Health Services, Hacettepe University, Ankara, Turkey.
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18
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Saker S, El-Kholany N, El-Gendy A, Fadhil ON, Maria OM. WITHDRAWN: Effect of post space conditioning and luting resin on the retentive strength of fiber-reinforced composite resin posts. J Prosthet Dent 2014:S0022-3913(14)00110-3. [PMID: 24767901 DOI: 10.1016/j.prosdent.2013.07.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Revised: 07/11/2013] [Accepted: 07/13/2013] [Indexed: 10/25/2022]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
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Affiliation(s)
- Samah Saker
- Assistant Professor, Department of Conservative Dentistry, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Naglaa El-Kholany
- Assistant Professor, Department of Conservative Dentistry, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Abeer El-Gendy
- Assistant Professor, Department of Conservative Dentistry, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Omar N Fadhil
- Postgraduate student, Department of Prosthodontics, Faculty of Dentistry, Malaya University, Kuala Lumpur, Malaysia
| | - Ola M Maria
- Assistant Professor, Faculty of Dentistry, McGill University; Department of Oral Biology, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
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Wang W, Zhao G, Guan Y, Wang J, Wang C. Study on effects of short glass fiber reinforcement on the mechanical and thermal properties of PC/ABS composites. J Appl Polym Sci 2014. [DOI: 10.1002/app.40697] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Weihua Wang
- Material Science and Engineering Institute, Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education); Shandong University; Jinan Shandong 250061 People's Republic of China
- Department of Materials Engineering; Harbin University of Science and Technology Rongcheng Campus; Rongcheng Shandong 264300 People's Republic of China
| | - Guoqun Zhao
- Material Science and Engineering Institute, Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education); Shandong University; Jinan Shandong 250061 People's Republic of China
| | - Yanjin Guan
- Material Science and Engineering Institute, Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education); Shandong University; Jinan Shandong 250061 People's Republic of China
| | - Jingjing Wang
- Material Science and Engineering Institute, Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education); Shandong University; Jinan Shandong 250061 People's Republic of China
| | - Chenggong Wang
- Qingdao Hisense Mould Co., Ltd. Qingdao; Shandong 266114 People's Republic of China
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Murakami N, Wakabayashi N. Finite element contact analysis as a critical technique in dental biomechanics: A review. J Prosthodont Res 2014; 58:92-101. [DOI: 10.1016/j.jpor.2014.03.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 03/10/2014] [Indexed: 10/25/2022]
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21
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Durmuş G, Oyar P. Effects of post core materials on stress distribution in the restoration of mandibular second premolars: a finite element analysis. J Prosthet Dent 2014; 112:547-54. [PMID: 24630398 DOI: 10.1016/j.prosdent.2013.12.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 12/13/2013] [Accepted: 12/24/2013] [Indexed: 10/25/2022]
Abstract
STATEMENT OF PROBLEM Previous studies have not resolved the question as to which post and core combination optimizes the stress distribution within the post restoration and tooth. PURPOSE The purpose of this study was to determine which post and core combination provides the most favorable stress distribution upon loading. MATERIAL AND METHODS Three-dimensional models of teeth were created with the Ansys program to simulate different materials used for post and cores (Ti, NiCr, AuPd, zirconia, zirconia post/composite resin core, glass fiber post/composite resin core, and carbon fiber post/composite resin core) and metal ceramic crowns (nickel chromium alloy [Group NiCr] and gold palladium alloy [Group AuPd]). A force of 400 N was applied to the occlusal surface, and von Mises equivalent stress values were calculated. RESULTS Carbon fiber post/composite resin core/metal ceramic crowns with NiCr alloy core had the highest stress values in the weakened root, tooth/post interface, and post. NiCr post/NiCr core/metal ceramic crowns with NiCr alloy core had the lowest stress values in the weakened root and post. The zirconia post and core had the lowest stress value in the tooth/post interface. CONCLUSIONS A post material with a high elastic modulus led to lower stress in the weakened root (approximately 6%) and tooth/post interface (approximately 12%) and to higher stress in the post (approximately 5 times). A composite resin core led to higher stress in the weakened root (approximately 11% to 17%) and lower deformation in the tooth/post interface (approximately 17.5%) and post materials (approximately 24%). Group AuPd resulted in lower stress in the root and high stress in the post (approximately 4.5% to 7%) and affected the amount of deformation in posts with a composite resin core.
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Affiliation(s)
- Gökhan Durmuş
- Assistant Profesor, Department of Construction, Gazi University Technology Faculty, Ankara, Turkey
| | - Perihan Oyar
- Assistant Professor, Dental Prosthetics Technology, School of Health Services, Hacettepe University, Ankara, Turkey.
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22
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Scotti N, Rota R, Scansetti M, Paolino DS, Chiandussi G, Pasqualini D, Berutti E. Influence of adhesive techniques on fracture resistance of endodontically treated premolars with various residual wall thicknesses. J Prosthet Dent 2013; 110:376-82. [PMID: 24095213 DOI: 10.1016/j.prosdent.2013.08.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
STATEMENT OF PROBLEM The choice of restorative method is commonly based on the cavity configuration and the residual number of cavity walls. However, the residual wall thickness could be a valuable clinical parameter in the choice of restoration for endodontically treated teeth. PURPOSE The fracture resistance of endodontically treated premolars was compared with different wall thicknesses restored with direct composite resin with and without cuspal coverage and with and without fiber post insertion. MATERIAL AND METHODS This study included 104 intact human maxillary premolars extracted for periodontal or orthodontic reasons. Standardized mesio-occluso-distal cavities were prepared with different palatal wall thicknesses (1.5, 2, and 2.5 mm) and a buccal wall thickness of 2 mm. Teeth were restored with or without a fiber post and with or without cuspal coverage. Specimens were subjected to thermocycling (3000 cycles, 5 to 55°C) and embedded in polymerized acrylic resin. Teeth were submitted to cyclic fatigue followed by a static fatigue test with a universal testing machine; a compressive force was applied 30 degrees to the long axis of the teeth until fracture. The results were statistically analyzed by 3-way ANOVA (α=.05). RESULTS Residual wall thickness (P=.004), the type of adhesive restoration (P<.001), and fiber post insertion (P<.001) significantly influenced the fracture resistance of endodontically treated premolars. CONCLUSIONS In specimens with a cavity wall thickness >2 mm, direct intracuspal composite resin restorations supported by a fiber post achieved comparable fracture resistance. With a residual wall thickness <2 mm, only cuspal coverage with or without a fiber post provided satisfactory fracture resistance.
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Affiliation(s)
- Nicola Scotti
- Assistant Professor, Department of Cariology and Operative Dentistry, Dental School Lingotto, University of Turin, Turin, Italy.
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Dejak B, Młotkowski A. The influence of ferrule effect and length of cast and FRC posts on the stresses in anterior teeth. Dent Mater 2013; 29:e227-37. [DOI: 10.1016/j.dental.2013.06.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 05/01/2013] [Accepted: 06/24/2013] [Indexed: 10/26/2022]
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24
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Soares PV, Santos-Filho PCF, Soares CJ, Faria VLG, Naves MF, Michael JA, Kaidonis JA, Ranjitkar S, Townsend GC. Non-carious cervical lesions: influence of morphology and load type on biomechanical behaviour of maxillary incisors. Aust Dent J 2013; 58:306-14. [DOI: 10.1111/adj.12084] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Revised: 11/06/2012] [Accepted: 11/07/2012] [Indexed: 12/18/2022]
Affiliation(s)
- PV Soares
- Nucleus of Extension, Research and Teaching of NCCL; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlandia; Brazil
| | - PCF Santos-Filho
- Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlandia; Brazil
| | - CJ Soares
- Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlandia; Brazil
| | - VLG Faria
- Nucleus of Extension, Research and Teaching of NCCL; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlandia; Brazil
| | - MF Naves
- Nucleus of Extension, Research and Teaching of NCCL; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlandia; Brazil
| | - JA Michael
- School of Dentistry; The University of Adelaide; South Australia
| | - JA Kaidonis
- School of Dentistry; The University of Adelaide; South Australia
| | - S Ranjitkar
- School of Dentistry; The University of Adelaide; South Australia
| | - GC Townsend
- School of Dentistry; The University of Adelaide; South Australia
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25
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Santos Filho PCF, Soares PV, Reis BR, Verissimo C, Soares CJ. Effects of threaded post placement on strain and stress distribution of endodontically treated teeth. Braz Oral Res 2013; 27:305-10. [DOI: 10.1590/s1806-83242013000400003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 04/05/2013] [Indexed: 11/22/2022] Open
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26
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Balkaya MC, Birdal IS. Effect of resin-based materials on fracture resistance of endodontically treated thin-walled teeth. J Prosthet Dent 2013; 109:296-303. [DOI: 10.1016/s0022-3913(13)60304-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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da Silva BR, Moreira Neto JJ, da Silva FI, de Aguiar AS. Three-dimensional finite element analysis of the maxillary central incisor in two different situations of traumatic impact. Comput Methods Biomech Biomed Engin 2013; 16:158-64. [DOI: 10.1080/10255842.2011.611115] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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28
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Yousif Marghalani T, Tharwat Hamed M, Abdelmageed Awad M, Hussein Naguib G, Fouad Elragi A. Three-Dimensional Finite Element Analysis of Custom-Made Ceramic Dowel Made Using CAD/CAM Technology. J Prosthodont 2012; 21:440-50. [DOI: 10.1111/j.1532-849x.2012.00860.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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29
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Aleisa K, Alghabban R, Alwazzan K, Morgano SM. Effect of three endodontic sealers on the bond strength of prefabricated fiber posts luted with three resin cements. J Prosthet Dent 2012; 107:322-6. [DOI: 10.1016/s0022-3913(12)60084-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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da Silva BR, Moreira Neto JJS, da Silva FI, de Aguiar ASW. Finite element analysis applied to dentoalveolar trauma: methodology description. ISRN DENTISTRY 2011; 2011:297132. [PMID: 21991463 PMCID: PMC3169307 DOI: 10.5402/2011/297132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Accepted: 05/04/2011] [Indexed: 11/23/2022]
Abstract
Dentoalveolar traumatic injuries are among the clinical conditions most frequently treated in dental practice. However, few studies so far have addressed the biomechanical aspects of these events, probably as a result of difficulties in carrying out satisfactory experimental and clinical studies as well as the unavailability of truly scientific methodologies. The aim of this paper was to describe the use of finite element analysis applied to the biomechanical evaluation of dentoalveolar trauma. For didactic purposes, the methodological process was divided into steps that go from the creation of a geometric model to the evaluation of final results, always with a focus on methodological characteristics, advantages, and disadvantages, so as to allow the reader to customize the methodology according to specific needs. Our description shows that the finite element method can faithfully reproduce dentoalveolar trauma, provided the methodology is closely followed and thoroughly evaluated.
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Affiliation(s)
- B R da Silva
- Biotechnology Postgraduate Department, Federal University of Ceará, Sobral, CEP 62042-280, Brazil
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