The effect of temporary sealing materials and cleaning protocols on the bond strength of resin cement applied to dentin using the resin-coating technique

Abstract

This study evaluated the effect of temporary sealing materials and cleaning protocols on the bond strength of resin cement applied to dentin using resin-coating technique. Scotchbond Universal Adhesive and Filtek Supreme Ultra Flowable were applied to bovine dentin. Forty-five specimens were divided into the following three groups according to the temporary sealing materials: Cav-: CAVITON EX, Vas-: COCOA BUTTER and FIT SEAL, and Sep-: Washable SEP and FIT SEAL. Each material was placed on resincoated dentin. After 1-week water storage, one of the following three cleaning protocols was performed: -WA: washed with water, -BR: brushed with PRESSAGE, and -AF: cleaned with AIR-FLOW. Microtensile bond strength test and EDS analysis were conducted. Irrespective of the cleaning protocol used, Washable SEP demonstrated less residual debris on resin-coated dentin, resulting in high bond strength. Regardless of the temporary sealing material applied, AIR-FLOW demonstrated less residual debris, resulting in high bond strength.

Effect of a temporary sealing material on the bond strength of CAD/CAM inlay restorations with resin-coating technique

“…These results indicate that an airpolishing device with air-flow SOFT powder can clean temporarily sealed resin-coated dentin with Cavition EX surface. Our results were in accordance with the results of Sato et al 18) . Air-polishing device is widely used for stains and plaque removal 20,21) .…”

“…The SE2 primer was first applied to dentin surfaces for 20 s and air dried. Then, the bonding agent of SE2 was spread, gently air-dried and light cured for 10 s. Afterwards, ES flow was daubed thinly on SE2 applied dentin surfaces with a disposable applicator brush 5,10,17,18) (3L orange, Sun Medical, Shiga, Japan) and light-cured for 20 s. Then resin-coated dentin surfaces were wiped with alcohol pellets. The thickness of resin-coating layer was checked by confocal laser scanning microscopy (VK-X150, Keyence, Osaka, Japan) observation of perpendicular cut specimen in preliminary experiment.…”

Influência do material de cimentação temporário na resistência de união de pinos de fibra de vidro/cimento resinoso à dentina radicular

“…Isso pode ocorrer devido à maior proximidade com a luz do fotoativador, produzindo maior reação de polimerização(PEDREIRA et al, 2016;PENELAS et al, 2016; ASSIS et al., 2020;LOPES et al, 2020;DOS SANTOS et al, 2022), além do maior volume e diâmetro dos túbulos dentinários no terço cervical, que possibilitaram penetração do cimento resinoso(PEDREIRA et al, 2016;PENELAS et al, 2016; ASSIS et al, 2020;LOPES et al, 2020;DOS SANTOS et al, 2022), o que poderia justificar a redução da resistência de união para os cimentos Provicol e RelyX Temp NE, uma vez que, maior quantidade de resíduos desses materiais estariam presentes nos túbulos dentinários, impedindo a penetração do cimento resinoso. Destaca-se que, no presente estudo, a remoção dos cimentos temporários previamente à cimentação definitiva, foi realizada de acordo com as recomendações do fabricante, com a utilização de broca para o preparo do conduto e irrigação com água destilada, e que segundo a literatura não promove a remoção total do cimento temporário (KANAKURI; KAWAMOTO;MATSUMURA, 2005;SONG; AN;PARK, 2019;SATO et al, 2021).…”