U. Bragger et al., HEAT GENERATED DURING PREPARATION OF TITANIUM IMPLANTS OF THE ITI(R) DENTAL IMPLANT SYSTEM - AN IN-VITRO STUDY, Clinical oral implants research, 6(4), 1995, pp. 254-259
Citations number
NO
Categorie Soggetti
Engineering, Biomedical","Dentistry,Oral Surgery & Medicine
The aim of the present study was to assess in vitro the heat generated
within the implant body when preparing titanium implants of the ITI(R
) Dental Implant System to estimate the potential risk of tissue damag
e of individual abutment preparation. The speed and the pressure were
applied according to routine clinical procedures used in the patients
mouth. Much attention was paid to ensure optimal cooling at the point
where the implant and secondary part were being cut. For each of 3 pre
parations the change from the original temperature was measured over a
period of 40 s. Each type of preparation was repeated on 5 implants f
itted with temperature probes. Three different preparatory procedures
performed with rotating diamond burs and stainless steel finishing bur
s under cooling with spray from the dental unit may result in a maxima
l increase in temperature of 10 degrees, 7 degrees and 3 degrees measu
red coronally, both at the implant shoulder and at the coronal extent
of the plasma-sprayed surface after 10 s. The use of additional spray
and pressured air significantly reduced this maximal increase to 5 deg
rees C, 5 degrees C and 4 degrees C, respectively at 10 s, At the 30-s
and 40-s time points, all the measured temperatures were significantl
y lower. Preparation of implants or abutments does not lead to detrime
ntal effects on peri-implant tissues provided that adequate cooling wi
th spray is used. However, without cooling, extreme overheating could
be provoked, reaching the critical temperature that would lead to irre
versible bone damage within only a few seconds.