Failure rate

The percentage of failures in a study or clinical trial, of a procedure or a device (e. g. implant), which do not meet the success criteria or fall into the failure criteria, defined in the study protocol.


Progressive weakening of a structure by accumulating embrittlement and crack formation/propagation.

Fatigue failure

A structural failure caused by multiple loading episodes when all loads lie below the structure´s ultimate strength.


The Food and Drug Administration (FDA or USFDA) is a federal agency of the United States Department of Health and Human Services in the USA. The FDA is responsible for protecting and promoting public health through the control and supervision of food safety, tobacco products, dietary supplements, prescription and over-the-counter pharmaceutical drugs (medications), vaccines, biopharmaceuticals, …

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FDA approved requests are for items that are new or substantially different and need to demonstrate “safety and efficacy”.


FDA clearance requests are for medical devices that prove they are “substantially equivalent” to the predicate devices already on the market.


Freeze-dried bone allograft Bone harvested from donor cadavers, washed, immersed in ethanol, frozen in nitrogen, freeze-dried and ground to similar particles ranging from 250 to 750μm. It acts primarily through an osteoconductive process, as inductive proteins, often found in only minute quantities, are only released after the resorption of the mineral.


free from infection

Finite element analysis

A numerical method for solving problems of engineering and mathematical physics. Software technique used to study stresses and strains on mechanical parts or components. Virtual prototyping software, often a component of CAD software programs, automatically generates the simulated mechanical loads for FEA The finite element method formulation of the problem results in a system of …

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Fixed prosthesis

Dental A restoration that is not removable by the patient. The restoration may be partial arch (FPD: Fixed partial denture), or complete arch (FCD: Fixed complete denture.

Fixed removable

Dental Prosthesis fixed to an implant or implants, only removable by the dentists.


Fluoroplastics stands for a group of plastics where the molecules contain carbon and fluorine. Fluoroplastics tend to have special properties:- Very high working temperatures. Non-stick characteristics. Very high resistance to chemical and solvents. Very high electrical resistance. The more common members of the fluoroplastics family, with which we work, are:- PTFE (PolyTetraFluoroEthylene) PTFE is the …

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Functional Mitral Regurgitation

Fragen an den Chirurg zu einer Brustvergrößerung

english      español      français Welche Fragen sollten Sie Ihrem Chirurgen zu einer Brustvergrößerung stellen? Diese Liste soll Ihnen helfen, keine Fragen zu vergessen, die Sie im Zusammenhang mit einer geplanten Brustvergrößerung haben. Vielleicht treffen nicht alle Fragen zu oder Sie haben zusätzliche Fragen. 1. Welche Risiken und Komplikationen sind mit Brustimplantaten verbunden? …

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Friction fit

State of retention of an implant at the time of insertion that results from slight compression of the osteotomy walls by the implant body. Components retained to an implant by friction.

Fused Deposition Modeling

Fused Deposition Modeling (FDM) is a 3D printing process that uses production-grade thermoplastic material to produce prototypes and production parts. Completed parts are robust, paintable and can be sealed to be impervious to fluids. During the build process, melted plastic is deposited layer by layer to create a two-dimensional cross section of the model. This …

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