Effect of air polishing with glycine powder on titanium abutment surfaces
Clinical Oral Implants Research
Article first published online: 25 MAY 2012
DOI: 10.1111/j.1600-0501.2012.02490.x
Abstract
Objective
The
aim of the present study was to evaluate morphological changes induced
by glycine powder air polishing on titanium surfaces and its effect on
bacteria recolonization in comparison with sodium bicarbonate powder.
Materials and methods
5 mm
wide and 1 mm thick titanium grade II disks were divided into three
groups of treatments: (i) no treatment; (ii) air polishing with glycine
powder; (iii) air polishing with sodium bicarbonate powder. Specimens
were characterized by laser profilometry, scanning electron microscopy
(SEM) and then installed onto removable appliances worn for 24 h by
healthy volunteers. Surface contamination was evaluated using SEM and
counting the number of colony forming units (CFU).
Results
SEM
observation revealed an increased roughness with the formation of
craters on samples treated with sodium bicarbonate powder, while not in
glycine ones. Statistical analysis failed to show significant
differences of both Ra and Rmax
parameters in treated groups. SEM observation of specimens surfaces,
after 24 h of permanence in the oral cavity, showed a higher
contamination of the disks treated with sodium bicarbonate compared with
those not treated (P < 0.05). Conversely, the group treated
with glycine showed the lower contamination if compared with
bicarbonate-treated group (P < 0.05).
Conclusions
Air
polishing with glycine powder may be considered as a better method to
remove plaque from dental implant because glycine is less aggressive
than sodium bicarbonate powder. Moreover, the use of glycine powder
seems to have an active role on the inhibition of bacterial
recolonization of implants in a short test period (24 h). Further
studies are needed to demonstrate the bacteriostatic properties of
glycine, envisaged on the basis of reduced contamination of the disks
polished with glycine compared with those not treated.
Comments