Effects of different implant–abutment connections on micromotion and stress distribution: Prediction of microgap formation

Saidin, Syafiqah; Kadir, Mohammed Rafiq Abdul; Sulaiman, Eshamsul; Kasim, Noor Hayaty Abu

doi:10.1016/j.jdent.2012.02.009

Cited by 98 publications

(85 citation statements)

References 37 publications

(54 reference statements)

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“…Two forces of 100 N are applied on the occlusal area. One force (F 1 ) pointing in axial direction and the other (F 2 ) with a buccallingual orientation and a tilt angle of 45°as shown in Figure 3 [8,9]. Principal boundary conditions are summarized in Table 2.…”

Section: Boundary Conditionsmentioning

confidence: 99%

Patient specific root-analogue dental implants – additive manufacturing and finite element analysis

Gattinger

Bullemer

Harrysson

2016

Current Directions in Biomedical Engineering

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Aim of this study was to prove the possibility of manufacturing patient specific root analogue twopart (implant and abutment) implants by direct metal laser sintering. The two-part implant design enables covered healing of the implant. Therefore, CT-scans of three patients are used for reverse engineering of the implants, abutments and crowns. Patient specific implants are manufactured and measured concerning dimensional accuracy and surface roughness. Impacts of occlusal forces are simulated via FEA and compared to those of standard implants.

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Section: Boundary Conditionsmentioning

confidence: 99%

Patient specific root-analogue dental implants – additive manufacturing and finite element analysis

Gattinger

Bullemer

Harrysson

2016

Current Directions in Biomedical Engineering

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“…These micro-gaps and retentive areas at dental implant interfaces are the most susceptible for bacterial colonization and biofilm formation, which can exert a strong influence on corrosion and wear processes with further inflammation of peri-implant soft and hard tissues. Degradation and inflammatory processes can contribute to the loss of mechanical integrity of metallic structures influencing the magnitude of micromovements between dental implant components, and furthermore, compromise the long-term health of peri-implant tissues [13,20,[23][24][25][26][27]. Adverse biological reactions such as gingival swelling and erythema, mucosal pain, and lichenoid reactions can be induced by the metallic ions released during corrosion of dental alloys [28].…”

Section: Introductionmentioning

confidence: 99%

Tribocorrosion Behavior of Calcium- and Phosphorous-Enriched Titanium Oxide Films and Study of Osteoblast Interactions for Dental Implants

et al. 2015

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Titanium (Ti) dental implants are frequently exposed simultaneously to a corrosive environment and cyclic micromovements at implant/abutment and implant/ bone interfaces, becoming part of a tribocorrosion system. Thus, wear debris and corrosion products/ions can be released to peri-implant tissues and induce inflammatory reactions leading to implant failure. Moreover, the poor osseointegration is also one of the main problems affecting dental implants lifetime. Surface modification strategies have been proposed to design novel Ti oxide-based multifunctional surfaces that are able to simultaneously improve cellular functions and provide enhanced tribocorrosion resistance. Hence, the main objective of this work was the synthesis of Calcium (Ca)-and Phosphorous (P)-enriched Ti oxide films aimed to display superior wear/corrosion performance and simultaneously, to enhance osteoblast-material interactions. Ca-and P-enriched films were synthesized by plasma electrolytic oxidation (PEO) and their characteristics were assessed by Field emission scanning electron microscopy, profilometry, energy-dispersive X-ray spectroscopy, X-ray diffraction, and water contact angle measurements. PEO-treated samples were subjected to pin-on-disk reciprocating sliding tests in artificial saliva at 37°C. The viability of MG63 cells cultured on PEO-treated samples was investigated by MTT assay, and their adhesion ability by SEM and confocal laser scanning microscopy. The wear/corrosion behavior of Ti was improved after PEO treatments and the electrolyte composition appeared to play a crucial role both on its corrosion tendency and mechanical wear resistance. It is believed that this improvement is related to the higher rutile/anatase ratio exhibited by Ca-and P-enriched surfaces. Osteoblasts were well spread on these surfaces displaying improved viability/proliferation compared to Ti.

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“…When the abutment screw became loose and was not retightened immediately in a 2-piece abutment, the abutment might have acted as a lever with the hexagonal antirotational part becoming one of the most mechanically vulnerable points against the functional load. 15 Precautious regular evaluation and immediate treatment should have been performed to prevent more complications. A fractured abutment fragment is difficult to remove, and the prosthesis requires replacement.…”

Section: Discussionmentioning

confidence: 99%

“…However, when the conical frictional resistance is lost, higher stresses concentrate at the superior part or geometric discontinuities of the abutment, which have a higher tendency to microfracture. 15 A fractured component in the dental implant can pose a significant clinical challenge. Preloading the abutment screw and occlusal loading could wedge the fractured abutment into the implant and require high pull-out force.…”

mentioning

confidence: 99%

Technique to retrieve implant abutment fragments

Lee

Park²,

Park

et al. 2015

The Journal of Prosthetic Dentistry

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Effects of different implant–abutment connections on micromotion and stress distribution: Prediction of microgap formation

Cited by 98 publications

References 37 publications

Patient specific root-analogue dental implants – additive manufacturing and finite element analysis

Patient specific root-analogue dental implants – additive manufacturing and finite element analysis

Tribocorrosion Behavior of Calcium- and Phosphorous-Enriched Titanium Oxide Films and Study of Osteoblast Interactions for Dental Implants

Technique to retrieve implant abutment fragments

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