Influência de tratamentos superficiais na resistência de união de reparo em resina a base de silorano: análise após envelhecimento
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Data
2011-12-23
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Universidade Federal de Goiás
Resumo
The aim of the present study was to evaluate the influence of different surface treatments on
bond strength of repair resin-based silorane through microtensile test. 160 silorane blocks
were randomly distributed among 40 experimental groups (n=4) resulting from the interaction
of three factors under study: surface treatment, adhesive system and resin used to repair. The
blocks were stored for 9 days in deionized water at 37°C prior to surface treatment and repair.
Repair was performed, after the use of a bonding agent: (Ad 1) Silorane bond or (Ad 2) Adper
Scotchbond, with Filtek P90 (P90) or Filtek Z350 XT (Z350 XT) on one of the 10 treatment
protocols: control (C), silane (Si), phosphoric acid (Pa), Pa plus Si (PaSi), hydrofluoric acid
(Ha), Ha plus Si (HaSi), sandblasting (S), S plus Si (SSi), diamond bur (Db), Db plus Si
(DbSi). Blocks were sectioned into beams and after age by storage for six months, subjected
to microtensile testing and subsequent analysis in a stereoscope to define the failure types.
Additionally, 10 blocks of Filtek P90 composite resin were made for surface analysis by
SEM, after completion of surface treatment. Statistical analysis (Mann-Whitney, Kruskal-
Wallis and Dunn tests, α=0.05) was performed. The values were statistically influenced by the
type of resin (p<0.001) and by the surface treatment (p<0.0001), but not by the bonding agent
(p=0,940). SSi, Ha and HaSi produced similar bond strength values, the greatest. Treating the
surface with Db showed the worst values and composite resin P90 generated higher bond
strength values than Z350 XT to repair silorane surfaces.
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Citação
GUIMARÃES, Raphaella Mendes. Influência de tratamentos superficiais na resistência de união de reparo em resina a base de silorano: análise após envelhecimento. 2011. 70 f. Dissertação (Mestrado em Odontologia) - Universidade Federal de Goiás, Goiânia, 2011.