Implants failure: 6 main reasons. Part 2

#2 reason: implant failure as a result of nonobservance of surgical act

Wrong choice of implant size and shape

o It is important to use appropriate implant for each individual patient. Pay special attention to its diameter because bone trophism requires additional space for adequate implant placement.
o The choice of the implant should be based on bone type.
o When choosing long implant you should also consider placement of anatomical structures so you should use maximum lengths of the implant for each clinical case.
o It is important to estimate rationally potential loading on the implant and to choose appropriate restoration.

Risks when implant placement into the bone of first type: trophism abnormality and compression

o Adequate cooling during all stages of implantation.
o Choosing correct rotation speed of drills
o Maximum excessive exclusion compression at all stages of implantation
o Using of bone tap for bone of the first type during cylinder-shaped implant of classical type of thread placement and expander for cortical bone.

Mistakes in drill choosing: incorrect preparation of bone cavity

o Determine correctly patient bone type and adequate implantation strategy.
o It is vital to follow the surgery protocol of selected implant depending on the quality of bone tissue. Drill sizes must correspond implants size in the upper part (in cortical layer) + 0.2-0.3mm indent in the apical part of the.
o Eliminate the gap between bone socket and implant body while taking into account the diameter of implant at apical part
o Use taper drills with diamond coating or conical drills for placing of conical-shaped implants
o For taper implants use cylinder-shaped drills applying stepwise drilling method
o For cylinder-shaped implants use cylinder-shaped drills

Bone resorption in cervical part of implant. Excessive compression at the cortical layer

o Use implant with 5.0 or 4.2 diameter
o Use the expander of cortical layer
o Chose appropriate rotation speed of marking and finish drills

Insufficient initial stability of the implant

o It is important to select correct drilling protocol especially when working with 4th type of bone
o Place dental implant without using sweep
o Check implant stability during all stages of implantation using Osstell instrument

Peculiarities during direct implantation

o After tooth root extraction you should do full preparation and cleaning of bone cavity
o Correctly select implant shape and size
o According to each clinical case you can use additional materials like membranes, bone materials etc.
o In case of implantation in later terms, the period of osteointegration would be extended

Avoid all this mistakes! Read the next part of this article!