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Herrero-Climent F, Martínez-Rus F, Salido MP, Roldán D, Pradíes G. Comparative in vitro evaluation of microgap in titanium stock versus cobalt-chrome custom abutments on a conical connection implant: Effect of crown cementation and ceramic veneering. Clin Oral Implants Res 2024; 35:1286-1298. [PMID: 38884385 DOI: 10.1111/clr.14317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 05/02/2024] [Accepted: 05/31/2024] [Indexed: 06/18/2024]
Abstract
OBJECTIVE To compare the implant-abutment connection microgap between computer-aided design and computer-aided manufacturing (CAD/CAM) milled or laser-sintered cobalt-chrome custom abutments with or without ceramic veneering and titanium stock abutments with or without crown cementation. MATERIAL AND METHODS Six groups of six abutments each were prepared: (1) CAD/CAM cobalt-chrome custom abutments: milled, milled with ceramic veneering, laser-sintered, and laser-sintered with ceramic veneering (four groups: MIL, MIL-C, SIN, and SIN-C, respectively) and (2) titanium stock abutments with or without zirconia crown cementation (two groups: STK and STK-Z, respectively). Abutments were screwed to the implants by applying 30 Ncm torque. All 36 samples were sectioned along their long axes. The implant-abutment connection microgap was measured using scanning electron microscopy on the right and left sides of the connection at the upper, middle, and lower levels. Data were analyzed using the Kruskal-Wallis test (p < .05). RESULTS Mean values (μm) of the microgap were 0.54 ± 0.44 (STK), 0.55 ± 0.48 (STK-Z), 1.53 ± 1.30 (MIL), 2.30 ± 2.2 (MIL-C), 1.53 ± 1.37 (SIN), and 1.87 ± 1.8 (SIN-C). Although significant differences were observed between the STK and STK-Z groups and the other groups (p < .05), none were observed between the milled and laser-sintered groups before or after ceramic veneering. The largest microgap was observed at the upper level in all groups. CONCLUSIONS Titanium stock abutments provided a closer fit than cobalt-chrome custom abutments. Neither crown cementation nor ceramic veneering resulted in significant changes in the implant-abutment connection microgap.
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Affiliation(s)
- Federico Herrero-Climent
- Department of Conservative and Prosthetic Dentistry, Faculty of Odontology, Complutense University of Madrid, Madrid, Spain
| | - Francisco Martínez-Rus
- Department of Conservative and Prosthetic Dentistry, Faculty of Odontology, Complutense University of Madrid, Madrid, Spain
| | - María Paz Salido
- Department of Conservative and Prosthetic Dentistry, Faculty of Odontology, Complutense University of Madrid, Madrid, Spain
| | - David Roldán
- Department of Conservative and Prosthetic Dentistry, Faculty of Odontology, Complutense University of Madrid, Madrid, Spain
| | - Guillermo Pradíes
- Department of Conservative and Prosthetic Dentistry, Faculty of Odontology, Complutense University of Madrid, Madrid, Spain
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Zhong P, Deng L, Xu S, Cao Y. Effect of polishing process on torque loss ratio and microgap of selective laser melting abutment: an in vitro study. BMC Oral Health 2024; 24:1055. [PMID: 39251975 PMCID: PMC11386349 DOI: 10.1186/s12903-024-04829-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 08/28/2024] [Indexed: 09/11/2024] Open
Abstract
BACKGROUND The purpose of this in vitro study was to investigate the effect of polishing post-treatment process on the torque loss ratio and microgap of Selective Laser Melting (SLM) abutments before and after mechanical cycling test through improving the surface roughness of the implant-abutment interface. MATERIALS AND METHODS Forty SLM abutments were fabricated, with 20 underwent minor back-cutting, designated as polishing, in the implant-abutment interface. The abutments were divided into three groups: SLM abutments (group A), original abutments (group B), and polished SLM abutments (group C), each containing 20 abutments. Surface roughness was evaluated using a laser microscope. Implant-abutment specimens were subjected to mechanical cycling test, and disassembly torque values were measured before and after. Scanning electron microscope (SEM) was used to measure microgap after longitudinal sectioning of specimens. Correlation between surface roughness, torque loss ratio, and microgap were evaluated. LSD's test and Tamhane's T2 comparison were used to analyze the data (α = 0.05). RESULTS The Sz value of polished SLM abutments (6.86 ± 0.64 μm) demonstrated a significant reduction compared to SLM abutments (26.52 ± 7.12 μm). The torque loss ratio of polished SLM abutments (24.16%) was significantly lower than SLM abutments (58.26%), while no statistically significant difference that original abutments (18.23%). The implant-abutment microgap of polished SLM abutments (2.38 ± 1.39 μm) was significantly lower than SLM abutments (8.69 ± 5.30 μm), and this difference was not statistically significant with original abutments (1.87 ± 0.81 μm). A significant positive correlation was identified between Sz values and the ratio of torque loss after cycling test (r = 0.903, P < 0.01), as well as Sz values and the microgap for all specimens in SLM abutments and polished SLM abutments (r = 0.800, P < 0.01). CONCLUSION The findings of this study indicated that the polishing step of minor back-cutting can lead to a notable improvement in the roughness of SLM abutments interface, which subsequently optimized the implant-abutment fit. It can be seen that the application of minor back-cutting method has advanced the clinical use of SLM abutments.
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Affiliation(s)
- Peixing Zhong
- Department of Prosthetics, Guangxi Medical University College of Stomatology, 6 Shuangyong Road, Nanning, 530021, Guangxi, PR China
| | - Limei Deng
- Department of Oral and Maxillofacial Surgery, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Nanning, 530021, Guangxi, PR China
| | - Sheng Xu
- Department of Prosthetics, Guangxi Medical University College of Stomatology, 6 Shuangyong Road, Nanning, 530021, Guangxi, PR China
| | - Yong Cao
- Department of Oral and Maxillofacial Surgery, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Nanning, 530021, Guangxi, PR China.
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Gutiérrez Robledo N, Punset Fuste M, Rodríguez-Contreras A, García Marro F, Manero Planella JM, Figueras-Álvarez O, Roig Cayón M. In Vitro Assessment of a New Block Design for Implant Crowns with Functional Gradient Fabricated with Resin Composite and Zirconia Insert. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3815. [PMID: 39124479 PMCID: PMC11313615 DOI: 10.3390/ma17153815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Revised: 07/26/2024] [Accepted: 07/29/2024] [Indexed: 08/12/2024]
Abstract
This study aims to evaluate and compare the mechanical resistance, fatigue behavior and fracture behavior of different CAD/CAM materials for implant crowns. Eighty-eight implant crowns cemented-screwed with four sample groups: two monolithic G1 Zirconia (control) and G3 composite and two bi-layered G2 customized zirconia/composite and G4 prefabricated zirconia/composite. All static and dynamic mechanical tests were conducted at 37 °C under wet conditions. The fractographic evaluation of deformed and/or fractured samples was evaluated via electron microscopy. Statistical analysis was conducted using Wallis tests, which were performed depending on the variables, with a confidence interval of 95%, (p < 0.05). The Maximum Fracture Strength values displayed by the four groups of samples showed no statistically significant differences. The crown-abutment material combination influenced the failure mode of the restoration, transitioning from a fatigue fracture type located at the abutment-analog connection for monolithic materials (G1 and G3) to a brittle fracture located in the crown for bi-layered materials (G2 and G4). The use of layered crown materials with functional gradients appears to protect the crown/abutment connection area by partially absorbing the applied mechanical loads. This prevents catastrophic mechanical failures, avoiding long chairside time to solve these kinds of complications.
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Affiliation(s)
- Nicolás Gutiérrez Robledo
- School of Dentistry, Universitat Internacional de Catalunya (UIC), 08195 Barcelona, Spain; (O.F.-Á.); (M.R.C.)
- Independent Research, 28028 Madrid, Spain
| | - Miquel Punset Fuste
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain; (M.P.F.); (A.R.-C.); (J.M.M.P.)
- UPC Innovation and Technology Center (CIT-UPC), Universitat Politècnica de Catalunya (UPC), 08034 Barcelona, Spain
- Barcelona Research Centre in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain;
- Reserach Institute San Joan de Déu (IRSJD), 08950 Barcelona, Spain
| | - Alejandra Rodríguez-Contreras
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain; (M.P.F.); (A.R.-C.); (J.M.M.P.)
- Barcelona Research Centre in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain;
- Reserach Institute San Joan de Déu (IRSJD), 08950 Barcelona, Spain
| | - Fernando García Marro
- Barcelona Research Centre in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain;
- Center for Structural Integrity, Reliability and Micromechanics of Materials Research Group (CIEFMA), Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain
| | - José María Manero Planella
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain; (M.P.F.); (A.R.-C.); (J.M.M.P.)
- Barcelona Research Centre in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain;
- Reserach Institute San Joan de Déu (IRSJD), 08950 Barcelona, Spain
| | - Oscar Figueras-Álvarez
- School of Dentistry, Universitat Internacional de Catalunya (UIC), 08195 Barcelona, Spain; (O.F.-Á.); (M.R.C.)
| | - Miguel Roig Cayón
- School of Dentistry, Universitat Internacional de Catalunya (UIC), 08195 Barcelona, Spain; (O.F.-Á.); (M.R.C.)
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Pol CWP, Cune MS, Raghoebar GM, Naves LZ, Meijer HJA. Mechanical strength of stock and custom abutments as original and aftermarket components after thermomechanical aging. Clin Exp Dent Res 2024; 10:e892. [PMID: 39052871 PMCID: PMC11271801 DOI: 10.1002/cre2.892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 07/27/2024] Open
Abstract
OBJECTIVES The study aimed to assess the impact on the mechanical strength and failure patterns of implant-abutment complexes of choosing different abutment types, designs and manufacturers, aiding in selecting the optimal restorative solution. Stock and custom abutments from original and aftermarket suppliers were subjected to thermomechanical aging. MATERIAL AND METHODS Stock and custom abutments from the implant manufacturer (original) and a aftermarket supplier (nonoriginal) were connected to identical implants with internal connection. Custom abutments were designed in a typical molar and premolar design, manufactured using the workflow from the respective suppliers. A total of 90 implants (4 mm diameter, 3.4 mm platform, 13 mm length) equally divided across 6 groups (three designs, two manufacturers) underwent thermo-mechanical aging according to three different regimes, simulating five (n = 30) or 10 years (n = 30) of clinical function, or unaged control (n = 30). Subsequently, all samples were tested to failure. RESULTS During aging, no failures occurred. The mean strength at failure was 1009N ± 171, showing significant differences between original and nonoriginal abutments overall (-230N ± 27.1, p < .001), and within each abutment type (p = .000), favoring original abutments. Aging did not significantly affect the failure load, while the type of abutment and manufacturer did, favoring original and custom-designed abutments. The most common failure was implant bending or deformation, significantly differing between original and nonoriginal abutments and screws. All failure tests resulted in clinically unsalvageable implants and abutments. CONCLUSIONS Within the limitations of this study, original abutments exhibited a higher mechanical strength compared to the nonoriginal alternative, regardless of the amount of simulated clinical use. Similarly, custom abutments showed higher mechanical strength compared to stock abutments. However, mechanical strength in all abutments tested was higher than average chewing forces reported in literature, thus components tested in this study can be expected to perform equally well in clinical situations without excessive force.
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Affiliation(s)
- Christiaan W. P. Pol
- Department of Integrated Dentistry, Dental School, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Marco S. Cune
- Department of Restorative Dentistry, Dental School, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
- Department of Oral and Maxillofacial SurgeryProsthodontics and Special Dental Care, St. Antonius hospital NieuwegeinNieuwegeinThe Netherlands
| | - Gerry M. Raghoebar
- Department of Oral and Maxillofacial Surgery, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Lucas Z. Naves
- Department of Restorative Dentistry, Dental School, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Henny J. A. Meijer
- Department of Restorative Dentistry, Dental School, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
- Department of Oral and Maxillofacial Surgery, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
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Riera C, Karasan D, Sailer I, Mojon P, Fehmer V, Pitta J. Mechanical stability of posterior implant-supported monolithic zirconia cantilever on titanium-base abutments. An in vitro study. Clin Oral Implants Res 2024; 35:1042-1053. [PMID: 38415804 DOI: 10.1111/clr.14251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 02/09/2024] [Accepted: 02/14/2024] [Indexed: 02/29/2024]
Abstract
PURPOSE Investigate survival and technical complications of two-unit posterior implant-supported cantilever made of monolithic zirconia on titanium-base abutments (Zr-TiB) vs. porcelain-fused-to-metal on castable gold abutments (PFM-GA) using two different implant connections, internal butt-joint (IBJ) and internal conical (IC). MATERIALS AND METHODS Forty-eight implants (4.3 mm diameter) were divided into four groups (n = 12) to support 2-unit mandibular premolar cantilevers with two different materials (Zr-TiB vs. PFM-GA) and two connection types (IBJ vs. IC). Tested groups were as follows: (1) IBJ/Zr-TiB; (2) IBJ/PFM-GA; (3) IC/Zr-TiB; and (4) IC/PFM-GA. Specimens were thermomechanical aged (1,200,000 cycles, 98 N, 5-55°C) with occlusal axial load on the pontic. Catastrophic and non-catastrophic events were registered, and removal torque values measured before and after aging. Specimens surviving aging were subjected to loading until failure. Survival, total complication rates, torque loss (%), and bending moments were calculated. RESULTS From 48 specimens, 38 survived aging. Survival rates significantly varied from 16.7% (IC/PFM-GA) to 100% (IBJ/Zr-TiB; IBJ/PFM-GA; IC/Zr-TiB) (p < .01). Internal conical connection revealed significantly higher torque loss (IC/ZrTiB - 67%) compared to internal butt-joint (IBJ/Zr-TiB - 44%; IBJ/PFM-GA - 46%) (p < .01). Bending moments were higher in internal butt-joint connections than in internal conical (p < .05). CONCLUSION AND CLINICAL IMPLICATIONS Two-unit posterior implant-supported cantilever FDPs replacing mandibular premolars composed of monolithic zirconia on titanium-base abutments demonstrated higher mechanical stability compared to porcelain-fused-to-metal on castable gold abutments in this in vitro study. The internal conical connection combined with porcelain-fused-to-metal on gold abutments revealed a high number of failures; therefore, their clinical use may be considered cautiously for this indication.
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Affiliation(s)
- Carme Riera
- Division of Fixed Prosthodontics and Biomaterials, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Duygu Karasan
- Division of Fixed Prosthodontics and Biomaterials, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Irena Sailer
- Division of Fixed Prosthodontics and Biomaterials, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Phillipe Mojon
- Division of Fixed Prosthodontics and Biomaterials, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Vincent Fehmer
- Division of Fixed Prosthodontics and Biomaterials, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - João Pitta
- Division of Fixed Prosthodontics and Biomaterials, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
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Janda M, Mattheos N. Prosthetic design and choice of components for maintenance of optimal peri-implant health: a comprehensive review. Br Dent J 2024; 236:765-771. [PMID: 38789753 DOI: 10.1038/s41415-024-7357-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 01/07/2024] [Accepted: 01/11/2024] [Indexed: 05/26/2024]
Abstract
Current research has identified features of the prosthetic design with potential to significantly impact the long-term health of peri-implant tissues, while the choice of prosthetic components is also shown to be critical in an effort to reduce long-term complications of implant therapy. Overcontouring of the prosthesis emergence profile has been associated with marginal bone loss, recession and peri-implantitis, while the mucosal emergence angle is shown to have a strong association with peri-implant tissue inflammation. Further elements of interest include convexity/concavity of the restoration, the prosthetic connection and the different geometric configurations of junctions, as well as the peri-implant tissue dimensions. With regards to implant components, the choice between original and third-party-manufactured components might come with implications, as differences in material and microgeometry might impact precision of fit and overall performance, potentially leading to complications. Scrutiny of the specifications and manufacturing is essential when third-party-manufactured components are considered.The aim of this narrative review was to summarise the current evidence with regards to the restorative features of the implant prosthesis and also the selection of prosthetic components which can have implications for the long-term success of the implant therapy. Furthermore, the review aimed at interpretating current scientific evidence into meaningful strategies and recommendations to implement in clinical practice of implant dentistry.
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Affiliation(s)
- Martin Janda
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Sweden.
| | - Nikos Mattheos
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Thailand; Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden
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Maceiras L, Liñares A, Nóvoa L, Batalla P, Mareque S, Pérez J, Blanco J. Marginal changes at bone-level implants supporting fixed screw-retained partial implant prostheses with or without intermediate standardised abutments: 1-year results of a randomised controlled clinical trial. Clin Oral Implants Res 2023; 34:263-274. [PMID: 36708068 DOI: 10.1111/clr.14039] [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: 01/24/2021] [Revised: 11/09/2022] [Accepted: 01/06/2023] [Indexed: 01/29/2023]
Abstract
OBJECTIVE To compare marginal changes at bone-level implants restored with screw-retained implant prosthesis with or without intermediate standardised abutments, after 1 year of follow-up. MATERIALS AND METHODS Thirty-six partially edentulous patients received 72 implants. Each patient received 2 implants and a 2- to 4-unit screw-retained implant-prosthesis. The test group received implants consisting of a screw-retained prosthesis connected directly to the implant shoulder, while the prostheses in the control group were connected through a 3-mm standardised intermediate abutment. Clinical and radiological data were recorded at baseline and at 3, 6 and 12 months in follow-up visits. RESULTS At 12 months, the marginal bone loss was 0.17 ± 0.24 mm for the test group (19 patients) and 0.09 ± 0.15 mm for the control group (17 patients), with no statistically significant differences (p > .05). The mean probing pocket depth was 2.96 mm ± 0.46 for the test group and 2.86 ± 0.62 mm for the control group. The test and control groups showed bleeding on probing levels of 18.86 ± 14.12% and 13.73 ± 17.66%, respectively. All patients scored below 25% on the plaque index levels. CONCLUSIONS Restoration of bone-level implants with fixed screw-retained partial prostheses with or without intermediate abutments presented similar radiographic and clinical outcomes after 1 year.
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Affiliation(s)
- Lucía Maceiras
- Periodontology Unit, School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Antonio Liñares
- Periodontology Unit, School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain.,Medical-Surgical Odontology (OMEQUI) Research Group, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Lourdes Nóvoa
- Periodontology Unit, School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Pilar Batalla
- Periodontology Unit, School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Santiago Mareque
- Periodontology Unit, School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain
| | | | - Juan Blanco
- Periodontology Unit, School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain.,Medical-Surgical Odontology (OMEQUI) Research Group, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
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Ma M, Li X, Zou L, He J, Zhao B. Mechanical properties and marginal fit of prefabricated versus customized dental implant abutments: A comparative study. Clin Implant Dent Relat Res 2022; 24:720-729. [PMID: 36043699 DOI: 10.1111/cid.13130] [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: 06/21/2022] [Revised: 08/05/2022] [Accepted: 08/20/2022] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Dental implant abutments play an important role in the health and aesthetics of soft and hard tissues around implants. PURPOSE To compare mechanical properties and marginal fit of prefabricated and customized dental implant abutments and provide references to evaluate the relationship between abutment choice and clinical indications. METHODS Titanium abutments were randomly divided into prefabricated and customized abutments. Static and dynamic loads were applied according to ISO14801:2016. Mechanical properties, including fracture strength, fatigue strength, rotational torque value, and torque loss rate, were measured. The biological properties of the implant abutments were assessed using an internal marginal fit. The samples were sliced, and the internal marginal fit was examined using a scanning electron microscope before and after cyclic loading. The length of the tight contact was calculated at the level of the conical connection, lower internal connection, and screw threads. Microleakage was evaluated by immersing the samples in 1% methylene blue and measuring the absorbance. RESULTS The fracture strengths of the prefabricated abutments were greater than those of the customized abutments before and after cyclic loading. The average fatigue strengths of the prefabricated and customized abutments were 350 and 300 N, respectively. The removal torque loss of the customized abutments was significantly greater than that of the prefabricated abutments. Significant differences were found in conical connection before loading, while the screw threads showed substantial differences between the two groups after loading. Microleakage in the customized abutments was significantly higher than that in the prefabricated abutments before and after loading. CONCLUSIONS Prefabricated abutments showed superior mechanical and biological properties compared with customized abutments in vitro, suggesting a greater risk of mechanical and biological complications occurring with the use of customized abutments. This study provides a reference for the clinical selection of implant abutments.
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Affiliation(s)
- Mingchen Ma
- Department of Oral Implantology, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning, China
| | - Xuejing Li
- Department of Oral Implantology, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning, China
| | - Liyan Zou
- Department of Oral Implantology, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning, China
| | - Jing He
- Department of Oral Implantology, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning, China
| | - Baohong Zhao
- Department of Oral Implantology, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning, China
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Wu YL, Tsai MH, Chen HS, Lin CP, Wu AYJ. Effect of Marginal Bone Integrity and Aftermarket Abutment Screws on Dental Implant Systems-A Preliminary Study with Finite Element Method. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5952. [PMID: 36079334 PMCID: PMC9457101 DOI: 10.3390/ma15175952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
Bone resorption around implants is quite common, and the maturity and popularization of computer-aided design and computer-aided manufacturing (CAD/CAM) technology have made the use of aftermarket abutment screws more widespread. This study aimed to explore the biomechanical influence of these two common factors on the internal stress of an implant system using three-dimensional finite element analysis (3D FEA). The FEA results indicated that under the same loading conditions, the use of an aftermarket screw had the greatest impact on the screw itself among the three components of the implant system, while the maximum stress increased by 6.3% and 10.5% in the bone integrity and bone loss models, respectively. Moreover, the marginal bone loss models had the greatest impact on the implant fixture, with a maximum stress increase of 51.8% on average. Evidently, the influence of bone loss might be far greater than that of the aftermarket screw; however, any factor could be enough to cause clinical failure. Therefore, we should pay more attention to the maintenance of the long-term peri-implant marginal bone integrity.
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Affiliation(s)
- Yu-Ling Wu
- Department of Dentistry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan
| | - Ming-Hsu Tsai
- Department of Mechanical Engineering, Cheng Shiu University, Kaohsiung 833, Taiwan
| | - Hung-Shyong Chen
- Department of Mechanical Engineering, Cheng Shiu University, Kaohsiung 833, Taiwan
- Center for Environmental Toxin and Emerging-Contaminant Research, Cheng Shiu University, Kaohsiung 833, Taiwan
| | - Ching-Ping Lin
- Department of Dentistry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan
| | - Aaron Yu-Jen Wu
- Department of Dentistry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan
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López-Píriz R, Goyos-Ball L, Cabal B, Martínez S, Moya JS, Bartolomé JF, Torrecillas R. New Ceramic Multi-Unit Dental Abutments with an Antimicrobial Glassy Coating. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5422. [PMID: 35955356 PMCID: PMC9369483 DOI: 10.3390/ma15155422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/24/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
The choice of suitable materials and new designs in oral implantology and the subsequent enhancement of the characteristics of the dental implant developed is an important research topic with wide scope. The present work aims to develop a new multifunctional zirconia-ceria/alumina (Ce-TZP/Al2O3) composite with an antimicrobial glass-based coating to be used in multi-unit abutments compatible with commercially available Ti implants for peri-implantitis prevention. An airbrush spraying technique was effectively applied to coat the sintered ceramic composite starting from a glass powder suspension. This deposition technique was appropriate for obtaining continuous antimicrobial glass-based coatings with homogenous thickness (~35 µm) on ceramic dental implant components. The dental implant systems with the antimicrobial glassy coating were subjected to a mechanical integrity test following ISO 14801 to determine their long-term stability. The tested implant-coating structure seems to be stable under in vitro conditions with ultimate applied forces exceeding the maximum physiological occlusal loading force. This paper also presents a pilot clinical case report that shows peri-implant tissue around the mechanically stable glass coating with no signs of inflammation 1 year after implant insertion. This result is a preliminary probe of the durability and biological tolerance of the glassy material by the gingiva, as well as the antimicrobial effect on the peri-implant microbiota displayed by the coating.
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Affiliation(s)
- Roberto López-Píriz
- Instituto de Cirugía Oral Avanzada-ICOA, Calle de Fray Luis de León, 14, 28012 Madrid, Spain
| | - Lidia Goyos-Ball
- Nanoker Research, Pol. Ind. Olloniego, Parcela 22A, Nave 5, 33660 Oviedo, Spain
| | - Belén Cabal
- Nanomaterials and Nanotechnology Research Centre (CINN), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Oviedo (UO), Principado de Asturias (PA), Avenida de la Vega 4-6, 33940 El Entrego, Spain
| | - Susana Martínez
- Nanoker Research, Pol. Ind. Olloniego, Parcela 22A, Nave 5, 33660 Oviedo, Spain
- Nanomaterials and Nanotechnology Research Centre (CINN), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Oviedo (UO), Principado de Asturias (PA), Avenida de la Vega 4-6, 33940 El Entrego, Spain
| | - José S. Moya
- Nanomaterials and Nanotechnology Research Centre (CINN), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Oviedo (UO), Principado de Asturias (PA), Avenida de la Vega 4-6, 33940 El Entrego, Spain
| | - José F. Bartolomé
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), 28049 Madrid, Spain
| | - Ramón Torrecillas
- Nanoker Research, Pol. Ind. Olloniego, Parcela 22A, Nave 5, 33660 Oviedo, Spain
- Nanomaterials and Nanotechnology Research Centre (CINN), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Oviedo (UO), Principado de Asturias (PA), Avenida de la Vega 4-6, 33940 El Entrego, Spain
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Comparing the Fracture Resistance and Modes of Failure in Different Types of CAD/CAM Zirconia Abutments with Internal Hexagonal Implants: An In Vitro Study. MATERIALS 2022; 15:ma15072656. [PMID: 35407988 PMCID: PMC9000730 DOI: 10.3390/ma15072656] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/28/2022] [Accepted: 04/01/2022] [Indexed: 02/04/2023]
Abstract
Three groups of zirconia abutments (n = 5) consisting of different connection designs or manufacturers were investigated (All-Zr, ASC-Zr, and AM-Zr groups). All-electric dynamic test instruments were used to place static loading on a specimen with a crosshead speed set at 1 mm/min. A Kruskal-Wallis test and a post hoc Mann-Whitney U test were used for statistical evaluation. The mean fracture resistance was 252.37 ± 82.79 N for the All-Zr group, 384.62 ± 45.24 N for ASC-Zr group, and 361.83 ± 90.31 N for the AM-Zr group. The difference of fracture resistance between the three groups was marginally significant (Kruskal-Wallis test, p = 0.054), with the ASC zirconia abutment tending to have higher fracture resistance than the full zirconia abutment. The modes of failure among the three types of abutments are different. The All-Zr group showed an oblique fracture line starting from the buccal aspect at the region of the implant platform. While the ASC-Zr and AM-Zr groups showed a relatively horizontal fracture line with a greater distance from the implant platform. The titanium inserts cannot significantly improve the fracture resistance of the zirconia abutment. However, they may alter the modes of failure, allowing buccal fracture surfaces of the zirconia abutments to be placed away from the implant platform, thereby protecting the implant-abutment connection.
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Sealing Efficacy of the Original and Third-Party Custom-Made Abutments-Microbiological In Vitro Pilot Study. MATERIALS 2022; 15:ma15041597. [PMID: 35208136 PMCID: PMC8879410 DOI: 10.3390/ma15041597] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/17/2022] [Accepted: 02/19/2022] [Indexed: 02/05/2023]
Abstract
Implant–abutment connection (IAC) is a key factor for the long-term success and stability of implant-supported prosthodontic restoration and its surrounding tissues. Misfit between prosthodontic abutment and implant at the IAC leads to technical and biological complications. Two kinds of prosthodontic abutments are currently available on the market: original and third-party abutments. The aim of this pilot study was to test and compare the internal fit (gap) at the implant–abutment interface depending on the abutment fabrication method based on microbial leakage in static conditions and the need for the use of gap sealing material. Two groups of 40 implants were formed on the basis of the type of abutment. In each of the groups of two implant systems, two subgroups of 10 implants were formed. The tested subgroups consisted of 10 implants with sealing material and a negative control subgroups consisting of 10 implants without any sealing material. The test material, GapSeal (Hager and Werken, Duisburg, Germany) was applied in the test subgroups. The implant–abutment assemblies were contaminated with a solution containing Staphylococcus aureus and Candida albicans for 14 days under aerobic conditions. Results showed that there was no statistically significant difference regarding the microbial leakage between the original and third-party custom-made abutments, regardless of the use of sealing material. It can be concluded that the abutment fabrication method has no significant influence on sealing efficacy regarding the bacterial and fungal leakage in static conditions.
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13
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Alonso-Pérez R, F Bartolomé J, Pradíes G. Original vs compatible stock abutment- implant connection. An in vitro analysis of the internal accuracy and mechanical fatigue behaviour. J Prosthodont Res 2021; 66:476-483. [PMID: 34866067 DOI: 10.2186/jpr.jpr_d_20_00066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE To assess the internal accuracy and mechanical behaviour under cyclic loading after artificial aging of implantsupported crowns restored with original stock abutments and two compatible non-original stock abutments. METHODS Forty-eight original internal hexagon connection implants were connected to different stock abutments. The samples were divided into three groups depending on the manufacturer of the abutment components (one original, two non-originals).Firstly, samples were cross-sectioned and observed by using Scanning Electron Microscope (SEM) to evaluate the internal accuracy in three different implant-abutment interface locations (platform, internal and screw). Further, cyclic fatigue loading was carried out according to the ISO Norm 14801 using dynamic testing machine under sinusoidal loads for 2,000,000 cycles at test frequencies of 2 Hz in air after thermocycling with 10,000 cycles at 5 °C and 55 °C in artificial saliva for aging simulation. RESULTS Original abutment components presented the highest percentage of surface with tight contact with the implant in the three implant-abutment interfaces studied. Additionally, original configuration showed highest fatigue limit value and fatigue strength exponent (280 N and -0.054) than non-original 1 (225 N and -0.109) and non-original 2 (200 N and -0.101). CONCLUSION Original abutment components provide better fit and mechanical results under cyclic loading than nonoriginal configurations. The results obtained in this study seem to suggest that the use of the original stock abutments to implants leads to a more homogeneous load distribution between the components that can influence the long-term success of the restorations.
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Affiliation(s)
- Raquel Alonso-Pérez
- Department of Buccofacial Prosthesis, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - José F Bartolomé
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Guillermo Pradíes
- Department of Buccofacial Prosthesis, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
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Rizvi N, Alyahya Y, Rizvi A, Narvekar U, Petridis H, Pros C. Accuracy of Original vs. Non-original Abutments Using Various Connection Geometries for Single Unit Restorations: A Systematic Review. J Prosthodont 2021; 31:e21-e52. [PMID: 34866275 DOI: 10.1111/jopr.13464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2021] [Indexed: 11/30/2022] Open
Abstract
PURPOSE To ascertain whether the compatibility of non-original abutments (NOAs) with dental implants is influenced by the type of implant connection i.e. internal or external, and whether certain combinations of componentry may be as compatible as the original components. METHODS A structured literature search was conducted using 3 electronic databases (MEDLINE®, The Cochrane Library, and Web of Science Core Collection) for studies reporting on the use of non-original abutments published between 1995 and 2020. This was supplemented with hand searching in relevant journals and references, as well as searching grey literature. Relevant studies were selected according to specific inclusion criteria. Data was collected for the following parameters: precision of fit, microleakage, micromorphological differences, micromotion, rotational misfit, screw loosening, maximum load capacity, fracture resistance, tensile strength, compressive strength and in-vivo implant and prosthesis outcomes. RESULTS The electronic searching and hand search yielded titles and abstracts of 5617 studies following de-duplication; 40 studies were finally selected. Overall, original abutments showed better precision of fit, ability to resist microleakage, prevention of rotational misfit and micromotion, and fatigue strength compared with non-original abutments. Some non-original abutments on external connections were comparable with original abutments in terms of precision of fit and resistance to screw loosening and may be associated with less catastrophic failures than those on internal connections. CONCLUSION Original abutments present more predictable outcomes than non-original abutments with regards to the parameters investigated. However, it seems that external connections can provide some level of compatibility in terms of precision of fit and may also exhibit less catastrophic failures than NOAs on internal connections. This may be due to increased rotational freedom external connections provide. There is a lack of information regarding the influence of connection geometry on many aspects of compatibility and therefore the current clinical recommendation should be to use original abutments. More laboratory studies comparing non-original abutments on different implant connections are required. In addition, there is a need for long-term in vivo studies providing data on the clinical performance of non-original abutments. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Naureen Rizvi
- Unit of Prosthodontics, UCL Eastman Dental Institute, London, United Kingdom
| | - Yasir Alyahya
- Unit of Prosthodontics, UCL Eastman Dental Institute, London, United Kingdom
| | - Ali Rizvi
- Unit of Prosthodontics, UCL Eastman Dental Institute, London, United Kingdom
| | - Unnati Narvekar
- Unit of Prosthodontics, UCL Eastman Dental Institute, London, United Kingdom
| | - Haralampos Petridis
- Unit of Prosthodontics, UCL Eastman Dental Institute, London, United Kingdom
| | - Cert Pros
- Unit of Prosthodontics, UCL Eastman Dental Institute, London, United Kingdom
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15
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Mechanical Performance of Chairside Ceramic CAD/CAM Restorations and Zirconia Abutments with Different Internal Implant Connections: In Vitro Study and Finite Element Analysis. MATERIALS 2021; 14:ma14175009. [PMID: 34501107 PMCID: PMC8434075 DOI: 10.3390/ma14175009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/14/2021] [Accepted: 08/27/2021] [Indexed: 11/17/2022]
Abstract
(computer-aided design-computer-aided manufacturing) CAD/CAM monolithic restorations connected to zirconia abutments manufactured with a chairside workflow are becoming a more common restorative option. However, their mechanical performance is still uncertain. The aim of this study was to evaluate the mechanical behavior of a combination of a zirconia abutment and monolithic all-ceramic zirconia and lithium disilicate crown manufactured with a chairside workflow, connected to titanium implants with two types of internal connection—tube in tube connection and conical connection with platform switching. They were thermally cycled from 5 °C to 55 °C and were subjected to a static and fatigue test following ISO 14801. The fractured specimens from the fatigue test were examined by SEM (scanning electron microscopy). Simulations of the stress distribution over the different parts of the restorative complex during the mechanical tests were evaluated by means of (finite element analysis) FEA. The mechanical performance of the zirconia abutment with an internal conical connection was higher than that of the tube in tube connection. Additionally, the use of disilicate or zirconia all-ceramic chairside CAD/CAM monolithic restorations has similar results in terms of mechanical fracture and fatigue resistance. Stress distribution affects the implant/restoration complex depending on the connection design. Zirconia abutments and monolithic restorations seem to be highly reliable in terms of mechanical resistance.
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16
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Shenoy S, Anegundi RV. LETTER TO EDITOR - ORPHAN IMPLANTS. J ORAL IMPLANTOL 2021; 48:347. [PMID: 34091690 DOI: 10.1563/aaid-joi-d-21-00072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Orphan Implants are encountered when the dentist places an implant, and for some reason, the patient is lost to follow up, and he visits a second dentist for the restoration. The latter will have no clue regarding the implant in the patient's mouth in such a situation. This situation is also expected when the clinician uses multiple implant brands, and the patient reports after some years for a restoration, which leaves the clinician clueless if the clinician does not maintain proper implant records.
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Affiliation(s)
- Santhosh Shenoy
- Additional Professor, NITTE (DEEMED TO BE UNIVERISTY), AB SHETTY MEMORIAL INSTITUTE OF DENTAL SCIENCES
| | - Raghavendra Vamsi Anegundi
- ABSMIDS: AB Shetty Memorial Institute of Dental Sciences Post Graduate Periodontics Department of Periodontics, NITTE (DEEMED TO BE UNIVERSITY) Deralakatte, Mangalore INDIA Mangalore Karnataka 575017 Post Graduate, ABSMIDS: AB Shetty Memorial Institute of Dental Sciences, NITTE (DEEMED TO BE UNIVERSITY)
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17
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Alsubaiy EF. Abutment screw loosening in implants: A literature review. J Family Med Prim Care 2020; 9:5490-5494. [PMID: 33532384 PMCID: PMC7842481 DOI: 10.4103/jfmpc.jfmpc_1343_20] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 09/13/2020] [Accepted: 09/28/2020] [Indexed: 11/04/2022] Open
Abstract
This review was intended on major factors contributing to abutment screw loosening. A search of Pubmed and Google Scholar, as well as a manual search, was conducted. Publications and articles accepted for publication up to February 2020 were included. Out of 150 studies retrieved, a total of 57 were selected for this review. Dental implants are associated with a complexity of abutment screw loosening. Implantologists and prosthodontists should be aware of factors that contribute to this problem. In this review previously identified factors were collected, the consideration of which can help to reduce the frequency of abutment screw loosening.
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Affiliation(s)
- Ebrahim F Alsubaiy
- Assistant Professor, Department of Prosthodontics, King Khalid University, Abha, Saudi Arabia
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18
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Influence of Implant Connection, Abutment Design and Screw Insertion Torque on Implant-Abutment Misfit. J Clin Med 2020; 9:jcm9082365. [PMID: 32722131 PMCID: PMC7463581 DOI: 10.3390/jcm9082365] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/18/2020] [Accepted: 07/22/2020] [Indexed: 12/26/2022] Open
Abstract
Background: An accurate fit at the implant-abutment interface is an important factor to avoid biological and mechanical complications. The aim of this study was to evaluate the marginal misfit at the implant-abutment interface on external and Morse taper connection, with straight and angulated abutments under different insertion torque loads. Materials and Methods: A total of 120 implants were used, 60 with external connection (EC) and 60 with Morse taper connection (IC). Straight (SA) (n = 60) and angulated abutments (AA) (n = 60) were randomly screwed to each connection at different torque levels (n = 10 each): 10, 20 and 30 Ncm. All specimens were subjected to thermal and cyclic loading and the misfit was measured by scanning electron microscopy. Data were analyzed with one-way ANOVA, t-test and Kruskal-Wallis test. Results: Significant differences (p < 0.001) were found between connections and abutments regardless of the torque applied. Morse taper connections with straight and angulated abutments showed the lowest misfit values (0.6 µm). Misfit values decreased as torque increased. Conclusions: The misfit was affected by the type of connection. The type of abutment did not influence the fit in the Morse taper connection. The higher the tightening torque applied the increase in the fit of the implant-abutment interface.
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19
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Huang Y, Wang J. Mechanism of and factors associated with the loosening of the implant abutment screw: A review. J ESTHET RESTOR DENT 2019; 31:338-345. [PMID: 31150572 DOI: 10.1111/jerd.12494] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 05/19/2019] [Indexed: 11/29/2022]
Affiliation(s)
- Yiqing Huang
- Department of ProsthodonticsHubei‐MOST KLOS & KLOBM, School and Hospital of Stomatology, Wuhan University Wuhan China
- Department of StomatologyThe Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology Wuhan China
| | - Jiawei Wang
- Department of ProsthodonticsHubei‐MOST KLOS & KLOBM, School and Hospital of Stomatology, Wuhan University Wuhan China
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20
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Chemical and Structural Characterization of Sandlasted Surface of Dental Implant using ZrO2 Particle with Different Shape. COATINGS 2019. [DOI: 10.3390/coatings9040223] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The clinical success of dental implantation is associated with the phenomenon of osteointegration. Geometry and topography of the implant surface are critical for the short- and long-term success of an implantation. Modification of the surface of endosseous part of the implant with sandblasting was of special interest for our study. Taking into account the advantages of currently used ceramic abrasives: aluminum oxide, titanium oxide, calcium phosphate, these materials are able to break down during collision with the treated surface, the possibility of incorporation of their residues into the implant surface, as well as the difficulty of removing these residues. This paper aimed to determine the preferred composition and the shape of the abrasive, as well as the treatment regime for ZrO2 sandblasting modification of the surface of the endosseous part of the dental implant. Tetragonal and cubic solid solutions are based on ZrO2, as an abrasive that is applied for zirconium-niobium alloy sandblasting under different pressures. Optical and scanning electron microscopy, the physical and chemical state of the surface of implants as well as contact angle measurement and cell viability were used to assess surface after sandblasting. The results demonstrate the potential of using granular powders that are based on zirconium dioxide as an abrasive to create a rough surface on endosseous part of dental implants made from zirconium-based alloys. It does not lead to a significant change in the chemical composition of the surface layer of the alloy and it does not require subsequent etching in order to remove the abrasive particles. Based on structural and chemical characterization, as well as on cell viability and contact angle measurement, sandblasting by tetragonal ZrO2 powder in 4 atm. and an exposure time of 5 s provided the best surface for dental implant application.
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López‐Píriz R, Cabal B, Goyos‐Ball L, Fernández A, Bartolomé JF, Moya JS, Torrecillas R. Current state‐of‐the‐art and future perspectives of the three main modern implant‐dentistry concerns: Aesthetic requirements, mechanical properties, and peri‐implantitis prevention. J Biomed Mater Res A 2019; 107:1466-1475. [DOI: 10.1002/jbm.a.36661] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 01/24/2019] [Accepted: 02/14/2019] [Indexed: 12/29/2022]
Affiliation(s)
- Roberto López‐Píriz
- Nanomaterials and Nanotechnology Research Centre (CINN)Universidad de Oviedo (UO), Consejo Superior de Investigaciones Científicas (CSIC), Principado de Asturias (PA) Avenida de la Vega 4‐6, El Entrego Asturias, 33940 Spain
| | - Belén Cabal
- Nanomaterials and Nanotechnology Research Centre (CINN)Universidad de Oviedo (UO), Consejo Superior de Investigaciones Científicas (CSIC), Principado de Asturias (PA) Avenida de la Vega 4‐6, El Entrego Asturias, 33940 Spain
| | - Lidia Goyos‐Ball
- Nanoker Research, Pol. Ind. Olloniego, Department of Research and Development Parcela 22A, Nave 5, 33660, Oviedo Spain
| | - Adolfo Fernández
- Nanomaterials and Nanotechnology Research Centre (CINN)Universidad de Oviedo (UO), Consejo Superior de Investigaciones Científicas (CSIC), Principado de Asturias (PA) Avenida de la Vega 4‐6, El Entrego Asturias, 33940 Spain
| | - José F. Bartolomé
- Instituto de Ciencia de Materiales de Madrid (ICMM), Department of Energy, Environment and Health, Consejo Superior de Investigaciones Científicas (CSIC) Calle Sor Juana Inés de la Cruz 3, Madrid, 28049 Spain
| | - Jose S. Moya
- Nanomaterials and Nanotechnology Research Centre (CINN)Universidad de Oviedo (UO), Consejo Superior de Investigaciones Científicas (CSIC), Principado de Asturias (PA) Avenida de la Vega 4‐6, El Entrego Asturias, 33940 Spain
| | - Ramón Torrecillas
- Nanomaterials and Nanotechnology Research Centre (CINN)Universidad de Oviedo (UO), Consejo Superior de Investigaciones Científicas (CSIC), Principado de Asturias (PA) Avenida de la Vega 4‐6, El Entrego Asturias, 33940 Spain
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