Let us now discuss some terminologies which are in parlance related to this topic.
Implant Failure: The total failure of the implant to fulfill its purpose which are functional, esthetic and phonetic because of mechanical or biologic reasons.A biologic Failure can be defined as the inadequacy of the host to establish or to maintain osseointegration.The inability to establish osseointegration can be regarded as an early failure. The inability to maintain the achieved osseointegration, under functional conditions is considered a late loss.
Clinically, lack of osseointegration leads to implant mobility and subsequent failure.Therefore, a mobile implant is a failed implant. However, the process of failure is slow and gradual. Therefore, an implant that is progressively losing bone but is clinically stable (firm) can be defined as failing.Ailing Implant (Biologic complication): which may indicate an increased risk for failure, which can be of temporary significance or amenable to treatment and is generally a soft tissue aberration without the loss of supporting bone.To simplify, it can be stated that when problems are limited to the peri implant soft tissue it is called ‘Ailing implant’, when there is bone loss but still the implant is firm and not mobile it is ‘Failing Implant’ and when the bone loss has progressed to the limit that the implant is clinically mobile it is then a 'Failed Implant'. However, it is imperative that the mobility of the implant should be distinguished from the mobility of the prosthesis over the abutment or the abutment at its junction with the implant.
A failed implant also may exhibit a dull sound upon percussion and/or demonstrate peri-implant radiolucency.Non-functional, failed implants must be removed to prevent the associated bone loss from continuing. The option of removing the implant and allowing for healing and then replacement of another implant should not be ruled out.Surviving Implants: It is a term described by Albrektsson that applies to implants that are still in function but have not been tested against success criteria. Such as implant is considered to be in an intermediate position between successful and failing implants until proper evaluation, which is necessary to determine whether it needs to be treated.
Classification of the reasons of implant failure:
In order to understand failures it is vital to know, why they occur. The reasons are plenty and to streamline, these have been classified by El Asksary, Meffert and Griffith into the following categories:
According to Aetiology.
According to timing of failure.
According to Condition of the failure.
According to the responsible Personnel.
According to Failure Mode.
According to tissues involved.
According to the origin of failure.
Implant Failure: The total failure of the implant to fulfill its purpose which are functional, esthetic and phonetic because of mechanical or biologic reasons.A biologic Failure can be defined as the inadequacy of the host to establish or to maintain osseointegration.The inability to establish osseointegration can be regarded as an early failure. The inability to maintain the achieved osseointegration, under functional conditions is considered a late loss.
Clinically, lack of osseointegration leads to implant mobility and subsequent failure.Therefore, a mobile implant is a failed implant. However, the process of failure is slow and gradual. Therefore, an implant that is progressively losing bone but is clinically stable (firm) can be defined as failing.Ailing Implant (Biologic complication): which may indicate an increased risk for failure, which can be of temporary significance or amenable to treatment and is generally a soft tissue aberration without the loss of supporting bone.To simplify, it can be stated that when problems are limited to the peri implant soft tissue it is called ‘Ailing implant’, when there is bone loss but still the implant is firm and not mobile it is ‘Failing Implant’ and when the bone loss has progressed to the limit that the implant is clinically mobile it is then a 'Failed Implant'. However, it is imperative that the mobility of the implant should be distinguished from the mobility of the prosthesis over the abutment or the abutment at its junction with the implant.
A failed implant also may exhibit a dull sound upon percussion and/or demonstrate peri-implant radiolucency.Non-functional, failed implants must be removed to prevent the associated bone loss from continuing. The option of removing the implant and allowing for healing and then replacement of another implant should not be ruled out.Surviving Implants: It is a term described by Albrektsson that applies to implants that are still in function but have not been tested against success criteria. Such as implant is considered to be in an intermediate position between successful and failing implants until proper evaluation, which is necessary to determine whether it needs to be treated.
Classification of the reasons of implant failure:
In order to understand failures it is vital to know, why they occur. The reasons are plenty and to streamline, these have been classified by El Asksary, Meffert and Griffith into the following categories:
According to Aetiology.
According to timing of failure.
According to Condition of the failure.
According to the responsible Personnel.
According to Failure Mode.
According to tissues involved.
According to the origin of failure.
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