scholarly journals FEM analysis of masticatory induced stresses over surrounding tissues of dental implant

2019 ◽  
Vol 24 (3) ◽  
pp. 472-478 ◽  
Author(s):  
ANDREEA ANGELA ŞTEŢIU ◽  
◽  
MIRCEA ŞTEŢIU ◽  
MIHAI BURLIBAŞA ◽  
VIOREL ȘTEFAN PERIEANU ◽  
...  
Keyword(s):  
Dental Implant ◽  
Fem Analysis ◽  
Induced Stresses

Modeling of Stress Distribution in Dental Implant in Frontal Part of Mandible

2014 ◽  
Vol 606 ◽  
pp. 137-140
Author(s):  
Dušan Németh ◽  
Ján Kučera ◽  
František Lofaj ◽  
Vladimír Ivančo
Keyword(s):  
Stress Distribution ◽  
Stress Field ◽  
Dental Implant ◽  
Fem Analysis ◽  
Screw Thread ◽  
Bone Surface ◽  
Normal Position ◽  
Lower Stress ◽  
Frontal Part ◽  
Maximum Stresses

The aim of this work is the modeling of the stress distribution in cortical and trabecular bone of model frontal part of mandible by FEM analysis using linear static methods applying monocortical and bicortical fixation of dental implant. Depending on the position of the screw thread with regard to the bone surface, three different cases were simulated: exactly on the bone surface, 1,5 mm above and 0,5 mm below the surface of the cortical bone. It was found out that the stress field in the cortical part and the implant are considerably lower in the case of slightly recessed position in contrast with the above and normal position of the implant in both, monocortical and bicortical fixations. However, bicortical fixation in this case generates slightly lower stress field in the bone and implant parts than in monocortical fixation. Monocortical fixation is otherwise slightly more favorable from the viewpoint of maximum stresses in the bone in the case of exact and above positions of the implant.

scholarly journals FEM Analysis of Mandibular Prosthetic Overdenture Supported by Dental Implants: Evaluation of Different Retention Methods

2015 ◽  
Vol 2015 ◽  
pp. 1-16 ◽  
Author(s):  
M. Cicciù ◽  
G. Cervino ◽  
E. Bramanti ◽  
F. Lauritano ◽  
G. Lo Gudice ◽  
...  
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Clinical Success ◽  
Fem Analysis ◽  
Daily Practice ◽  
Long Term Results ◽  
Implant Overdenture ◽  
Von Mises ◽  
Different Response

Prosthetic rehabilitation of total edentulous jaws patients is today a common technique that clinicians approach in their daily practice. The use of dental implants for replacing missing teeth is going to be a safe technique and the implant-prosthetic materials give the possibility of having long-term clinical success. Aim of this work is to evaluate the mechanical features of three different prosthetic retention systems. By applying engineering systems of investigations like FEM and von Mises analyses, how the dental implant material holds out against the masticatory strength during the chewing cycles has been investigated. Three common dental implant overdenture retention systems have been investigated. The ball attachment system, the locator system, and the common dental abutment have been processed by Ansys Workbench 15.0 and underwent FEM and von Mises investigations. The elastic features of the materials used in the study have been taken from recent literature data. Results revealed different response for both types of device, although locator system showed better results for all conditions of loading. The data of this virtual model show all the features of different prosthetic retention systems under the masticatory load. Clinicians should find the better prosthetic solution related to the patients clinical condition in order to obtain long-term results.

scholarly journals FEM Analysis Applied to OT Bridge Abutment with Seeger Retention System

2020 ◽  
Author(s):  
Gabriele Cervino ◽  
Marco Cicciù ◽  
Simone Fedi ◽  
Dario Milone ◽  
Luca Fiorillo
Keyword(s):  
Finite Element Method ◽  
Dental Implant ◽  
Fem Analysis ◽  
Mechanical Behaviors ◽  
Fixed Prosthodontics ◽  
Bridge Abutment ◽  
Retention System ◽  
Implant Prosthesis ◽  
The Stability ◽  
Von Mises

Abstract Objective The purpose of this investigation is to highlight the technical components of a new kind of screw-retained dental implant prosthesis. The hypothesis is whether the OT Bridge (Rhein 83 S.R.L.; Bologna, Italy) system could be applied without secondary screw in the “all-on-four” retention system, thanks to the presence of an internal seeger. Materials and Methods By using engineering device such as finite element method (FEM) and von Mises investigation, it has been studied how the fixed prosthodontics for full-arch retention can be influenced by the presence of the screw for stabilizing it. Results In a dental implant, one model with four different configurations of the full-arch prosthesis retainer and the seeger has been investigated and then examined in contrast with or without the passant screw for locking the system. The experiments of this virtual study highlighted different features and mechanical behaviors of prosthodontic attachments. Conclusion The first two configurations, respectively those in which there are four and three connection screws, are safe and predictable. Therefore, the presence of the seeger significantly improves the stability and the retention of the whole prosthesis.

scholarly journals FEM Analysis of Dental Implant-Abutment Interface Overdenture Components and Parametric Evaluation of Equator® and Locator® Prosthodontics Attachments

Materials ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 592 ◽  
Author(s):  
Marco Cicciù ◽  
Gabriele Cervino ◽  
Dario Milone ◽  
Giacomo Risitano
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Three Dimensional ◽  
Fem Analysis ◽  
Long Term Results ◽  
Dimensional System ◽  
Dental Abutment ◽  
Implant Overdenture ◽  
Materials Used ◽  
Von Mises

The objective of this investigation was to analyze the mechanical features of two different prosthetic retention devices. By applying engineering tools like the finite element method (FEM) and Von Mises analyses, we investigated how dental implant devices hold out against masticatory strength during chewing cycles. Two common dental implant overdenture retention systems were analyzed and then compared with a universal—common dental abutment. The Equator® attachment system and the Locator® arrangement were processed using the FEM Ansys® Workbench. The elastic features of the materials used in the study were taken from recent literature. Results revealed different responses for both the devices, and both systems guaranteed a perfect fit over the axial load. However, the different design and shape involves the customized use of each device for a typical clinical condition of applying overdenture systems over dental implants. The data from this virtual model showed different features and mechanical behaviors of the overdenture prosthodontics attachments. A three-dimensional system involved the fixture, abutment, and passant screws of three different dental implants that were created and analyzed. Clinicians should find the best prosthetic balance to better distribute the stress over the component, and to guarantee the patients clinical long-term results.

Morphologies of Nonadherent Al2O3 and Matching Substrate Surfaces

1972 ◽  
Vol 30 ◽  
pp. 524-525
Author(s):  
C. S. Giggins ◽  
J. K. Tien ◽  
B. H. Kear ◽  
F. S. Pettit
Keyword(s):  
Electron Microscopy ◽  
Oxide Scale ◽  
Oxidation Resistance ◽  
Substrate Surface ◽  
Morphological Features ◽  
Thermally Induced ◽  
Oxide Spallation ◽  
Oxidation Resistant ◽  
Induced Stresses ◽  
Substrate Surfaces

The performance of most oxidation resistant alloys and coatings is markedly improved if the oxide scale strongly adheres to the substrate surface. Consequently, in order to develop alloys and coatings with improved oxidation resistance, it has become necessary to determine the conditions that lead to spallation of oxides from the surfaces of alloys. In what follows, the morphological features of nonadherent Al2O3, and the substrate surfaces from which the Al2O3 has spalled, are presented and related to oxide spallation.The Al2O3, scales were developed by oxidizing Fe-25Cr-4Al (w/o) and Ni-rich Ni3 (Al,Ta) alloys in air at 1200°C. These scales spalled from their substrates upon cooling as a result of thermally induced stresses. The scales and the alloy substrate surfaces were then examined by scanning and replication electron microscopy.The Al2O3, scales from the Fe-Cr-Al contained filamentary protrusions at the oxide-gas interface, Fig. 1(a). In addition, nodules of oxide have been developed such that cavities were formed between the oxide and the substrate, Fig. 1(a).

Dental implant patients and their satisfaction with treatment

1990 ◽  
Vol 54 (11) ◽  
pp. 670-679 ◽  
Author(s):  
M Tavares ◽  
LG Branch ◽  
L Shulman
Keyword(s):  
Dental Implant ◽  
Satisfaction With Treatment
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