Effect of whitening and desensitizing dentifrices on composite surfaces treated with surface sealants.
OBJECTIVE
This study evaluated the effect of different dentifrices on the microhardness and surface roughness of composite surfaces covered by surface sealants.


METHODS
Samples of Filtek P60 were made and divided into groups, in accordance with surface treatments: G1 - Fortify; G2 - Fortify Plus; G3 - control (none). For Knoop microhardness evaluation, the specimens were placed in a microdurometer, under a load of 50 g for 15 sec. The analyses of surface roughness were carried out individually in a profilometer. The specimens were submitted to toothbrushing using dentifrices: Colgate Maximum Protection Anti-caries, Colgate Whitening or Sensodyne, diluted in distilled water (1:3) for 30 000 cycles.


RESULTS
The results showed that the control group (G3) presented the highest microhardness values. The control group presented, before toothbrushing, the lowest surface roughness values, and after toothbrushing there were no differences among the experimental groups.


CONCLUSIONS
The maintenance of the lowest values of microhardness demonstrated the effectiveness of these sealant materials to support the abrasive wear.
Department of Dental Materials and Prosthodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil.
Paulo Henrique
PH
Dos Santos
Fabiana Ferres
FF
Brogin
Anderson
A
Catelan
Thaís Yumi Umeda
TY
Suzuki
Ana Paula Albuquerque
AP
Guedes
Sabrina
S
Pavan
Wirley Gonçalves
WG
Assunção
André Luiz Fraga
AL
Briso
D003188:Composite Resins; D003802:Dentifrices; D057133:Dentin Desensitizing Agents; D004338:Drug Combinations; D005459:Fluorides; D006244:Hardness; D009566:Nitrates; D010710:Phosphates; D019279:Resin Cements; D013499:Surface Properties; D058205:Tooth Bleaching Agents; D014099:Toothbrushing
D003188:Composite Resins; D003802:Dentifrices; D057133:Dentin Desensitizing Agents; D004338:Drug Combinations; C438835:Filtek P60 Composite Resin; C095811:Fortify sealant; D009566:Nitrates; D010710:Phosphates; D019279:Resin Cements; C097427:Sensodyne; D058205:Tooth Bleaching Agents; D005459:Fluorides