1. Infectious risk

Oral hygiene is an essential factor in ensuring the success of the implant.

Any periodontal disease must be treated and stabilized before beginning the implant treatment.

2. Mechanical risk

An occlusal overload could lead to the fracture of some parts of the implant or prosthesis, or the loosening of prosthetic components.

Causes of a biomechanical Load: 

• Occlusion 

• Parafunction (e.g. bruxism) 

Occlusal disorders (temporomandibular disorders), such as bruxomania, can result in peri-implant bone loss and eventually the loss of the implant.

• Implant position 

In the mesiodistal dimension, implants in too close a proximity to each other may result in an increased risk of recession, bone loss, lack of an interproximal papilla.

• Prosthetic design 


3. Esthetic risk

An unsatisfying esthetic result (quality of the prosthesis, implant malposition) could be the cause of the implant failure. 


  1. Salama H, Salama MA, Garber D, Adar P. The interproximal height of bone: a guidepost to predictable aesthetic strategies and soft tissue contours in anterior tooth replacement. Pract Periodontics Aesthet Dent. 1998 Nov-Dec; 10(9): 1131-41. 6. 

2. Choquet V, Hermans M, Adriaenssens P, Daelemans P, Tarnow DP. Clinical and radiographic evaluation of the papilla level adjacent to single-tooth dental implants. A retrospective study in the maxillary anterior region. J Periodontol. 2001 Oct; 72(10):1364-71.


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