IADR Abstract Archives
One VS Three-step Polishing Systems On Resin Composite Surfaces
Method:
The materials evaluated were Spectrum TPH (h, Coltene/Whaledent, shade A1) and Miris 2 (mh, DeTrey/Dentsply, NR enamel). A total of 80 disk-shaped specimens (5x3mm) were fabricated (N=40 per composite). The resin pastes were placed in a plexiglass mold, covered with a mylar strip, light-cured by a LED unit (TC-01, 220V, Spring Health, USA 800 mW/cm2 ) and randomly divided into five groups (n=8). Subsequently, all samples were subjected to finishing with 24-blades carbide burs (Jet brand). Afterwards, each group received polishing by one of the following systems: Kenda (KTR dental), Optrapol New Generation (Ivoclar-Vivadent), Jiffy (Ultradent), Jazz Supreme (SS White) and OptiShine (Kerr), according to the manufacturers' instructions. The surface roughness characteristics (Ra, Rz) were recorded by a profilometer (Diavite DH-5, Asmeto AG, Switzerland) and the gloss by a glossmeter (IG 330, HoribaLtd., Japan) immediately after polishing procedure. Four consecutive measurements per surface were performed. Roughness and gloss values were analyzed using the two-way ANOVA and Scheffe post-hoc tests (p<0.05).
Result:
|
Kenda |
Optrapol New Generation |
Jiffy |
Jazz Supreme |
OptiShine |
||||||||||||
|
Ra |
Rz |
Gloss |
Ra |
Rz |
Gloss |
Ra |
Rz |
Gloss |
Ra |
Rz |
Gloss |
Ra |
Rz |
Gloss |
||
Spectrum |
1.08 (0.46) |
7.42 (3.09) |
8.18 (1.60) |
0.35 (0.11) |
1.56 (0.69) |
15.51 (8.23) |
0.53 (0.15)
|
2.72 (1.17) |
15.27 (3.82) |
0.32 (0.09) |
2.22 (1.14) |
20.21 (3.41) |
0.69 (0.57) |
2.77 (1.50) |
18.41 (4.13) |
||
Miris |
1.05 (0.46) |
7.19 (3.37) |
14.07 (3.50) |
0.76 (0.52) |
5.63 (3.96) |
17.23 (6.79) |
1.03 (0.30) |
6.86 (2.21) |
17.55 (4.96) |
1.01 (0.70) |
7.87 (3.63) |
25.80 (8.84) |
0.92 (0.44) |
7.53 (2.97) |
29.87 (8.53) |
||
For both composites, Optrapol and Jazz showed the lowest Ra and Optrapol the lowest Rz values of all polishing systems (<0.05). Kenda provided the highest Ra and Rz values (<0.05). No statistically significant differences were detected among the other polishing systems. Under all systems, Miris 2 exhibited higher gloss values than Spectrum TPH (0.05). The highest gloss values were achieved under Optishine and Jazz in both composites whereas the least values after polishing by Kenda (<0.05).
Conclusion:
All one-step polishing systems provided superior surface characteristics on the resin composite surfaces compared with the multi-step one. Remarkable differences were determined among the one-step systems.