<i>In vivo</i>evaluation of occlusalcontact area and maximum bite force in patients with various types of implant-supported prostheses

Baca, Emrah; Yengin, Esengn; Röhlig, Bilge Gökçen; Sato, Suichi

doi:10.3109/00016357.2012.757360

Cited by 18 publications

(27 citation statements)

References 22 publications

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“…However, they exhibited ceramic chipping on the occlusal surface at a relatively low load of between 200 and 400 N, which was similar to the maximum occlusal force of normal individuals or implant-supported overdenture wearers. [21][22][23][24] The chipping was followed by tooth detachment from the denture base and bulk fracture. Although the effect of the loading sphere should be considered for the evaluation, a ceramic denture tooth may be contraindicated for use with a thin denture base.…”

Section: Discussionmentioning

confidence: 99%

“…The results were evaluated on a comparative basis with the statistical methods described subsequently and also by comparisons with the reported maximal occlusal force of normal individuals or denture wearers. [21][22][23][24] After the load test, the fractured specimens were observed with optical light microscopy at ×25 magnification (AX70PROVIS; Olympus) to evaluate the fracture initiation site and fracture mode. Some specimens were coated with platinum, and the surface was observed by scanning electron microscopy (S-4500 SEM; Hitachi Ltd).…”

Section: Fracture Testmentioning

confidence: 99%

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Influence of denture tooth thickness on fracture mode of thin acrylic resin bases: An experimental and finite element analysis

Sekinishi

Inukai

Murakami

et al. 2015

The Journal of Prosthetic Dentistry

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Section: Discussionmentioning

confidence: 99%

Section: Fracture Testmentioning

confidence: 99%

Influence of denture tooth thickness on fracture mode of thin acrylic resin bases: An experimental and finite element analysis

Sekinishi

Inukai

Murakami

et al. 2015

The Journal of Prosthetic Dentistry

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“…Three circular areas for load appliance, correspondent to the described semi -spheres, were defined 47 . According to ISO standard 14801, the load was applied forming 30 degrees with the implant long axis.…”

Section: Methodsmentioning

confidence: 99%

“…47 Because, contrary to the isotropy of resin, the bone shows orthotropic characteristics, properties would have to be defined taking into account the Cartesian coordinate system [48][49][50] (Table 3). The model design and other sets were maintained.…”

Section: Methodsmentioning

confidence: 99%

Design and validation of a short-implant rehabilitation model

Ferreira¹,

Oliveira²,

Castellanos³

et al. 2017

j.rpemd

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Objectives: This research intended to develop and validate a digital model that could be used to study the stresses and strains created in the different components involved in oral fixed rehabilitations with short implants. The validated model was then used to simulate a clinical-like situation.Methods: A digital model was created considering the posterior areas of the mandible. Its materialization obtained ten specimens of the experimental prototype. Seven of them were static compressive tested until failure and, for the other three, the tests were progressively interrupted, to allow the establishment of a damage sequence. On the numerical model a finite element analysis was performed with Abaqus software, under similar conditions to the experimental situation. Results:The stress pattern on the FEA and the failure location on the static test were similar.The sequence in which each part reached the yield strength was the same as that observed on the interrupted static test (resin, prosthetic framework, implants and implant screws, in this order). Due to these results, the model was considered valid. A clinical-like simulation with the validated model showed that buccal cortical bone, around the implants platform, is the weakest part of such a rehabilitation.Conclusions: This research allowed the development and validation of a computer-aided design model that can be used to study an oral fixed rehabilitation supported by short im- Conclusões: Esta investigação permitiu o desenvolvimento e a validação de um modelo que permite o estudo de reabilitações fixas sobre implantes curtos. Clinicamente é importante realçar que o osso cortical é a zona que apresenta tensões e deformações mais elevadas.

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“…To limit loading conditions, the mandibular ramus was constrained from the X, Y and Z directions. The loading force of occlusion was referred to previous study, which reported that the bite force of 2-implantsupported removal full-prostheses and 6-implant-supported fi xed fullprostheses was 416 and 516 N, respectively 9) . According to this report, 500 N was defined as the loading force uniformly in any conditions, and the von Mises stress (measured in MPa) on the residual bone was calculated by FEA.…”

Section: Dental Implants Simulation and Feamentioning

confidence: 99%

Evaluation of Influence Factors to Reduce Mechanical Stress on the Marginally Resected Mandibular Bone Against Dental Implant-supported Occlusion

Tamai

Hirota

Iwai

et al. 2018

J. Hard Tissue Biology.

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This study aimed to evaluate the mechanical stress on resected mandibular bone against occlusal force using dental implant without any bone grafting by fi nite element analysis to reduce the risk of the bone fracture. A model of marginal resection of the symphysis of the mandible, in which the bone height of the region was 5, 10 or 15 mm, was prepared. Two, four, or six implant-supported fi xed prostheses (superstructure) or overdenture were set up in the model and loaded with 500N of occlusal force. The von Mises stress on the resected region was the highest when two implants were bilaterally placed at positions closest to the resected region. The von Mises stress value on the resected region could be high enough to induce the bone fracture. The mechanical stress was reduced up to < 50 % by adding implant at posterior position and connecting all implants. The presence of superstructure on 4 or 6 implants signifi cantly decreased the von Mises stress when the residual bone height was 10 or 15 mm. Use of 6 implants showed no signifi cant advantage at the stress reduction compared to use of 4 implants. When the residual bone height was 5 mm, reinforcement of the residual bone or bone graft should be considered to avoid the bone fracture. Although the present results were obtained under restrictive conditions, the number of implant, implant position, and prostheses style could reduce the von Mises stress and the risk of bone fracture on the resected region.

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In vivoevaluation of occlusalcontact area and maximum bite force in patients with various types of implant-supported prostheses

Abstract: Use of implants for removable dentures and fixed reconstructions improve occlusal contact area and bite force.

Cited by 18 publications

References 22 publications

Influence of denture tooth thickness on fracture mode of thin acrylic resin bases: An experimental and finite element analysis

Influence of denture tooth thickness on fracture mode of thin acrylic resin bases: An experimental and finite element analysis

Design and validation of a short-implant rehabilitation model

Evaluation of Influence Factors to Reduce Mechanical Stress on the Marginally Resected Mandibular Bone Against Dental Implant-supported Occlusion

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