Influence of prophylaxis paste treatment on the abrasive wear of surface sealants.
OBJECTIVE
To investigate the abrasive wear of surface sealants (Seal&Protect and K-0184 (experimental sealant)) and the influence of pre-treatment with mineral deposit forming prophylaxis pastes (NUPRO Sensodyne and NUPRO) on this wear.


METHODS
One hundred and eight bovine dentine samples were randomly allocated to nine groups (1-9). Pre-treatment (10 s): groups 1-3: untreated, groups 4-6: NUPRO, groups 7-9: NUPRO Sensodyne. Sealing: groups 1, 4 and 7: unsealed, groups 2, 5 and 8: Seal&Protect, groups 3, 6 and 9: K-0184 (experimental sealer). Samples were then brushed with 12 000 brushing strokes (BS) with toothpaste slurry in an automatic brushing machine (120 BS/min; F = 2.5 N). Surface profiles were recorded at baseline, after pre-treatment and sealing and after each 2000 BS.


RESULTS
Total profile change (wear or gain due to pre-treatment, treatment and 12 000 BS): groups 1, 4 and 7 (no surface sealant) showed a not significantly different wear of 18.48 ± 2.63 µm, 24.98 ± 3.02 µm and 21.50 ± 5.47 µm, respectively. Remaining groups (sealed) showed a gain in height with no significant difference among each other. Wear in sealed groups (2, 3, 5, 6, 8 and 9) were not significantly different at all numbers of brushing strokes. Starting with 4000 BS, the wear in unsealed groups (1, 4 and 7) was statistically significantly higher compared to all other groups.


CONCLUSIONS
Stability and wear resistance of surface sealants are not affected by pre-treatment of dentine with NUPRO Sensodyne. The surface sealants tested provide a stable protective surface layer on dentine, which lasts for at least 12 000 brushing strokes.
Department for Preventive Dentistry, Periodontology and Cariology University of Zurich, Plattenstrasse 11, CH-8032 Zürich, Switzerland. florian.wegehaupt@zzm.uzh.ch
Florian J
FJ
Wegehaupt
Tobias T
TT
Tauböck
Thomas
T
Attin
D000818:Animals; D002417:Cattle; D004338:Drug Combinations; D005459:Fluorides; D009566:Nitrates; D009824:Ointments; D010710:Phosphates; D010895:Pit and Fissure Sealants; D014072:Tooth Abrasion
D004338:Drug Combinations; D009566:Nitrates; D009824:Ointments; D010710:Phosphates; D010895:Pit and Fissure Sealants; C097427:Sensodyne; D005459:Fluorides