In-vitro fatigue and fracture performance of three different ferrulized implant connections used in fixed prosthesis

Cosola, Saverio; Toti, Paolo; Babetto, Enrico; Covani, Ugo; Peñarrocha‐Diago, Miguel; Peñarrocha‐Oltra, David

doi:10.1016/j.jds.2020.08.002

Cited by 13 publications

(8 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With three fences at 12 contact points, the stress dissipated efficiently compared with only four contact points in one fence. Another factor that can affect the titanium implants due to the stress is fatigue [48,49]. However, a recent study using commercial purity titanium of grade 1 after processing by equal-channel angular pressing (ECAP) showed that the elongation to failure is reduced due to the low hardening capability.…”

Section: Discussionmentioning

confidence: 99%

Comparative Analysis of Stress and Deformation between One-Fenced and Three-Fenced Dental Implants Using Finite Element Analysis

Lee

Mukundan

Chang

et al. 2021

JCM

View full text Add to dashboard Cite

Finite element analysis (FEA) has always been an important tool in studying the influences of stress and deformation due to various loads on implants to the surrounding jaws. This study assessed the influence of two different types of dental implant model on stress dissipation in adjoining jaws and on the implant itself by utilizing FEA. This analysis aimed to examine the effects of increasing the number of fences along the implant and to compare the resulting stress distribution and deformation with surrounding bones. When a vertical force of 100 N was applied, the largest displacements found in the three-fenced and single-fenced models were 1.7469 and 2.5267, respectively, showing a drop of 30.8623%. The maximum stress found in the three-fenced and one-fenced models was 13.518 and 22.365 MPa, respectively, showing a drop of 39.557%. Moreover, when an oblique force at 35° was applied, a significant increase in deformation and stress was observed. However, the three-fenced model still had less stress and deformation compared with the single-fenced model. The FEA results suggested that as the number of fences increases, the stress dissipation increases, whereas deformation decreases considerably.

show abstract

Section: Discussionmentioning

confidence: 99%

Comparative Analysis of Stress and Deformation between One-Fenced and Three-Fenced Dental Implants Using Finite Element Analysis

Lee

Mukundan

Chang

et al. 2021

JCM

View full text Add to dashboard Cite

show abstract

“…Traditionally, a cement-retained implant prosthesis is often used in the aesthetic area due to anatomical conditions, better mechanical behavior, and fewer mechanical complication such as screw loosening [ 4 , 5 , 6 ], but residual cement may cause peri-implantitis [ 7 , 8 ]. One way to avoid this problem might be to use a screw-retained crown (SRC) instead.…”

Section: Introductionmentioning

confidence: 99%

“…The most common complications of implant-supported prostheses are screw loosening, screw fracture, and implant fracture. Among them, screw loosening is the most common with a rate of 2.1% [ 5 ]; it can be caused by several factors, including screw settling, and excessive functional loading. Screw settling is caused by the micro-roughness loss of the screw thread and internal surface during loading [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Reverse Torque Value of Angulated Screw Channel Abutment before and after Cyclic Loading: An In Vitro Study

Chen

et al. 2023

JFB

View full text Add to dashboard Cite

This in vitro experiment aimed to understand the difference in preload acting on an abutment screw under different angles of angulated screw-retained crown and the performance after cyclic loading. In total, thirty implants with angulated screw channel (ASC) abutments were divided into two parts. The first part consisted of three groups: a 0° access channel with a zirconia crown (ASC-0) (n = 5), a 15° access channel with a specially designed zirconia crown (sASC-15) (n = 5), and a 25° access channel with a specially designed zirconia crown (sASC-25) (n = 5). The reverse torque value (RTV) was measured at 0° for each specimen. The second part consisted of three groups: a 0° access channel with a zirconia crown (ASC-0) (n = 5); a 15° access channel with a zirconia crown (ASC-15) (n = 5), and a 25° access channel with a zirconia crown (ASC-25) (n = 5). The manufacturer’s recommended torque was applied to each specimen, and baseline RTV was measured before cyclic loading. Each ASC implant assembly was cyclically loaded at 0 to 40 N with 1 million cycles at 10 Hz. RTV was measured after cyclic loading. Kruskal–Wallis test and Jonckheere–Terpstra test were used for statistical analysis. All specimens were examined under a digital microscope and scanning electron microscope (SEM) to observe the wear of the screw head before and after the whole experiment. A significant difference in the different percentages of straight RTV (sRTV) between the three groups was found (p = 0.027). The angle of ASC to the different percentages of sRTV showed a significant linear trend (p = 0.003). No significant differences were found in RTV difference after cyclic loading among the ASC-0, ASC-15, and ASC-25 groups (p = 0.212). The ASC-25 group had the most serious degree of wear based on a digital microscope and SEM examination. The ASC angle will affect the actual preload acting on a screw: the larger the ASC angle, the smaller the preload. The performance of the angled ASC groups in RTV difference was comparable to that of 0° ASC after cyclic loading.

show abstract

“…In the case of cemented restorations an important aspect for long term success is a sufficient fixation of the ceramic suprastructures on the abutment platforms. Furthermore, a study showed that the stability of the crown-abutment connection in implants can be dependent on the “ferrule effect”, analogous to natural teeth, and consequently increases in the presence of ferrulization [ 9 ]. The fixation data published is as follows: analyzing the effect of contamination of the bond surface [ 10 , 11 , 12 ], the cement type and abutment height [ 13 ], abutment platform configuration [ 14 ], airborne-particle abrasion by using alumina [ 15 ] or silanisation and laser pretreatment [ 16 ] on retention force of the restoration.…”

Section: Introductionmentioning

confidence: 99%

Retentive Strength of CAD/CAM-Fabricated All-Ceramic Crowns Luted on Titanium Implant Abutments Using Different Ceramic Materials and Luting Agents: An In Vitro Study

et al. 2022

View full text Add to dashboard Cite

Objectives: This study aimed to determine the retentive strength of monolithic hybrid-all-ceramic crowns luted on titanium implant abutments. Material and Methods: In total, 450 crowns (75 each of Mark II, Empress CAD, e.max CAD, Suprinity, Enamic, Celtra Duo) were milled using a CAD/CAM system. The crowns were cemented onto sandblasted titanium implant abutments using five luting agents (Multilink Implant, Variolink II, RelyX Unicem, Fujicem, and Panavia 2.0). After thermocycling was performed (5000 cycles: 5–55 °C, 30-s dwell time), the crowns were removed using a universal testing machine. The location of luting-agent residue on the abutment and inner crown surfaces was evaluated. Analyses of variance (ANOVA) with the Bonferroni correction were performed to evaluate differences of retentive strength depending on the crown material and the kind of the luting agent. Results: The retentive strengths for the different ceramic materials were Vita Mark II: 652N-759N (SD:134N-146N), Empress CAD: 681N-822N (SD: 89N-146N), e.max CAD: 784N-1044N (SD: 109N-176N), Vita Enamic: 716N-1177N (SD: 132N-220N), Vita Suprinity: 867N-1488N (SD: 202N-278N), and Celtra Duo 772N-1335N (SD:151N-229N). After the removal trials, the visual documentation showed different adhesive residue location depending on the ceramic materials. Furthermore, the pull-off force was dependent on the choice of adhesives. No significant differences were found between different luting agents and the ceramic material Vita Mark II and Empress CAD. EmaxCAD showed significant differences with Unicem and FujiCem compared to Panavia, as did VitaSuprinity, VitaEnamic, and Celtra Duo (p < 0.001). Conclusions: The ceramic material used seems to influence the retentive strength and the use of certain luting agents results in a higher retentive strength for some ceramic materials.

show abstract

In-vitro fatigue and fracture performance of three different ferrulized implant connections used in fixed prosthesis

Cited by 13 publications

References 16 publications

Comparative Analysis of Stress and Deformation between One-Fenced and Three-Fenced Dental Implants Using Finite Element Analysis

Comparative Analysis of Stress and Deformation between One-Fenced and Three-Fenced Dental Implants Using Finite Element Analysis

Reverse Torque Value of Angulated Screw Channel Abutment before and after Cyclic Loading: An In Vitro Study

Retentive Strength of CAD/CAM-Fabricated All-Ceramic Crowns Luted on Titanium Implant Abutments Using Different Ceramic Materials and Luting Agents: An In Vitro Study

Contact Info

Product

Resources

About