Implant Success, Survival, and Failure: The International Congress of Oral Implantologists (ICOI) Pisa Consensus Conference

Abstract

The primary function of a dental implant is to act as an abutment for a prosthetic device, similar to a natural tooth root and crown. Any success criteria, therefore, must include first and foremost support of a functional prosthesis. In addition, although clinical criteria for prosthetic success are beyond the scope of this article, patient satisfaction with the esthetic appearance of the implant restoration is necessary in clinical practice. The restoring dentist designs and fabricates a prosthesis similar to one supported by a tooth, and as such often evaluates and treats the dental implant similarly to a natural tooth. Yet, fundamental differences in the support system between these entities should be recognized. The purpose of this article is to use a few indices developed for natural teeth as an index that is specific for endosteal root-form implants. This article is also intended to update and upgrade what is purported to be implant success, implant survival, and implant failure. The Health Scale presented in this article was developed and accepted by the International Congress of Oral Implantologists Consensus Conference for Implant Success in Pisa, Italy, October 2007.

Effect of PRF and Allograft Use on Immediate Implants at Extraction Sockets with Periapical Infection —Clinical and Cone Beam CT Findings—

“…The cone beam CT images were analyzed to assess crestal bone levels (implant collar to marginal bone) on 4 surfaces (facial, lingual/palatal, mesial, and distal) at baseline and at 12 months post-restoration. Implant survival/success was assessed in accordance with the Implant Health Scale 34) at the end of study period.…”

A Survey of the Opinion and Experience of UK Dentists

“…It is particularly striking to note that dental implant related NSD could be fully avoidable [31] since the current evidence suggests that these injuries are commonly caused by surgical errors that are directly associated with insufficient preoperative assessment or planning. [49] Inadequate radiological imaging and/or violation of established protocols and good practice guidelines published by ITI [54] , AO [52] , ICOI [12] , ADI [56] , and European Association of Osseointegration (EAO) [65] , appear to be responsible for these complications . [10,22,31,53,64,68,69] …”

“…[1][2][3] TG injuries are characterized by neurosensory disturbances, such as pain, numbness or altered tingling-type sensations (paraesthesia), within the teeth, skin and the mucosa. [4][5][6][7] The inferior alveolar nerve (IAN) and mental nerve (MN) and the lingual nerve (LN) are the most commonly damaged nerves during dental implant treatment [6,[8][9][10][11][12] with some studies reporting an incidence rate of up to 40% of nerve damage following implant placement surgery in the mandible related to the depth and the width of the implant bed preparation. [8,11,[13][14][15][16][17][18][19][20] Local anesthetic injections also cause TG damage due to mechanical or chemical injury.…”

Prosthodontic complications associated with implant retained crowns and bridgework: a review of the literature

“…14 Probing depths are generally greater around implants than teeth and a probing depth of 6 mm is not uncommon in health. 16 Periapical radiographs should not be routinely prescribed during follow-up and should only be taken when changes in clinical parameters indicate disease. 17 Radiographs should be interpreted cautiously because they only show interproximal bone levels and have poor reproducibility.…”

“…6,7 However, survival does not equate to success and these rates must be interpreted cautiously because a surviving implant may be failing, unrestorable or may have had extensive remedial treatment. 16 When implant loss occurs, it occurs before functional loading in approximately 55% of cases. 4,22 When an implant fails an alternative treatment may be considered, the site may be allowed to heal before placing a new implant (Figs 10 and 11) or a new, wider implant may be placed immediately.…”