Finite Element Analysis of Zygomatic Implants in Intrasinus and Extramaxillary Approaches for Prosthetic Rehabilitation in Severely Atrophic Maxillae

Ishak, Muhammad Ikman; Kadir, Mohammed Rafiq Abdul; Sulaiman, Eshamsul; Kasim, Noor Hayaty Abu

doi:10.11607/jomi.2304

Cited by 24 publications

(24 citation statements)

References 25 publications

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“…Different results were found in a study in which the authors suggested that the cantilever effect contributed to increasing the stress distribution and displacement in the extramaxillary approach, which could be reduced by the use of a support system that uses a short implant and ball type abutment as additional retention for the distal extension of the dental prosthesis cantilever [ 20 ]. In another research, the authors also reported that in the extramaxillary technique, the length of the distal cantilever was almost 2× longer than it was in the intrasinus technique [ 25 ]. Another author related that with the use of the extramaxillary technique, not only was there less contact of bone tissue with the zygomatic implant in comparison with the Branemark and exteriorized techniques, but there was a long cantilever, which was a risk factor for failure [ 11 ].…”

Section: Discussionmentioning

confidence: 99%

Stresses generated by two zygomatic implant placement techniques associated with conventional inclined anterior implants

Almeida

Cacciacane

França

2018

Annals of Medicine and Surgery

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PurposeTo make a comparative evaluation, by means of the finite element method, of the stress generated on supporting tissues and prosthetic system components, using zygomatic implants with the exteriorized and extramaxillary techniques, and different placement positions, associated either with inclined anterior implants, or those without inclination.Materials and methodsEight (8) tridimensional models were created to represent the clinical situations being researched, using the dataset of scanned images of an edentulous model. The implants and prosthetic components were photographed on millimeter paper and inserted into Rhinoceros 3D modeling computer software. From the measurements made on the image, the virtual models were made. The application force was distributed on the occlusal surface of the working side of the left maxillary first molar, first and second premolars, and incisal regions of the central incisor, simulating the occlusal load during mastication, in a total of 150 N.ResultsThe extramaxillary technique presented considerable variation in increased tension on the prosthesis screws and bone tissue. In the exteriorized technique, the highest tension values occurred in the region of the ridge, and the lowest, on the zygomatic process; the absence of cantilever reduced the stress on bone tissue in almost all regions.ConclusionThe exteriorized technique was shown to be more favorable to the distribution of stresses on the micro-unit screws and bone tissue, with the model with zygomatic implant placed in the region of the first molar and inclined anterior implant presenting the best results.

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Section: Discussionmentioning

confidence: 99%

Stresses generated by two zygomatic implant placement techniques associated with conventional inclined anterior implants

Almeida

Cacciacane

França

2018

Annals of Medicine and Surgery

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“…28,29 The procedure is able to demonstrate the complexities of stress behavior that characterize actual clinical conditions. 16 The present study measured VM stress, a trait used to evaluate ductile material such as titanium, as well as segmental displacement.…”

Section: Discussionmentioning

confidence: 99%

Finite-Element Analysis of a New Designed Miniplate which is Used via Intraoral Approach to the Mandible Angle Fracture

Coşkunses

Koçyiğit

Atıl

et al. 2015

Journal of Craniofacial Surgery

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The mandible is the largest facial bone as well as the most commonly fractured bone in the maxillofacial region. Despite numerous studies conducted to identify optimal treatment modalities and plates configurations for intraoral and transoral approaches, no definitive conclusion has been reached. This study used finite element analysis (FEA) to assess 4 scenarios for treatment of an angle fracture (6-hole noncompression miniplate; 6-hole single plate/Champy's technique, 3D strut plate; 2 parallel 4-hole noncompression miniplates). Analysis included segmental displacement and Von Mises Stress evaluations of a 3D reconstruction of a human mandible. Von Mises Stress values for plates did not vary significantly among treatment groups. Moreover, no significant differences were observed in cumulative displacement of segments subjected to vertical and horizontal loads, with all treatment configurations demonstrating clinical acceptability.

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“…The clutch pulley and shaft were made of carbon steel and cold drawn steel alloy, respectively [7]. All materials were assumed to be isotropic, homogenous and linearly elastic [8][9][10][11]. For the car engine drive, a static torque of 5.83 Nm was applied onto the groove surface of pulley in the clockwise direction.…”

Section: Computational Finite Element Analysismentioning

confidence: 99%

Conceptual Design of Automotive Compressor for Integrated Portable Air Conditioning System

et al. 2017

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Abstract. This study introduces a new concept of portable air conditioner which integrated with some available components in automotive air conditioning system. This new idea intends to solve the storage problems as well as to reduce the price of current portable air conditioner since some devices could directly be used from the automotive air conditioning system. The primary emphasis of this study was on the modification of automotive compressor design so as the system may alternately be operated. The length of conventional compressor shaft is extended to place an additional clutch pulley, a drive plate and a clutch coil. The new concept particularly the shaft and pulley were analysed through slope deflection and computational finite element analyses. The result of engineering analyses exhibited that the new design of compressor shaft and clutch pulleys promote a low risk of failure as the data values recorded are lower than the critical value for each criterion investigated.

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Finite Element Analysis of Zygomatic Implants in Intrasinus and Extramaxillary Approaches for Prosthetic Rehabilitation in Severely Atrophic Maxillae

Cited by 24 publications

References 25 publications

Stresses generated by two zygomatic implant placement techniques associated with conventional inclined anterior implants

Stresses generated by two zygomatic implant placement techniques associated with conventional inclined anterior implants

Finite-Element Analysis of a New Designed Miniplate which is Used via Intraoral Approach to the Mandible Angle Fracture

Conceptual Design of Automotive Compressor for Integrated Portable Air Conditioning System

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