Publications by authors named "Adriano Augusto Melo Mendonca"
This study evaluated the influence of relining fiber posts on the bond strength (BS) of resin cements in the root canal. Forty bovine teeth were divided in four groups (n = 10): G1 (ARC)-fiber post cemented with resin cement RelyX ARC; G2 (ARC+Z350)-relined fiber post cemented with RelyX ARC; G3 (U200)-fiber post cemented with self-adhesive cement RelyX U200; G4 (U200+Z350)-relined fiber post cemented with RelyX U200. The roots were sectioned in six 1.
View Article and Find Full Text PDFArticle Synopsis
- The paper discusses the improvements of infrared lasers, particularly the Erbium laser, for use in restoring dental tissues like enamel and dentin during cavity preparation.
- It highlights the laser’s action mechanism, effects, and the optimal parameters needed for effective application, including the importance of factors like water presence and plasma shielding during the ablation process.
- The clinical relevance is noted, as differences in the laser's effects relate to how it modifies the structure and appearance of the targeted dental tissue during treatment.
Article Synopsis
- The study analyzed the effects of a resin-modified glass-ionomer cement (RMGIC) on dentin with various thicknesses of smear layer regarding transdentinal cytotoxicity (TC) and bond strength (BS).
- Forty dentin discs with thick (TSL) and thin (THSL) smear layers underwent treatments to assess cell viability and bond strength, with significant results showing decreased cell metabolism in treated groups compared to control.
- Overall, while RMGIC exhibited moderate cytotoxic effects on MDPC-23 cells, the presence or removal of the smear layer did not significantly change its bond strength to dentin.
This study investigated the effect of coinitiator solutions and self-adhesive resin cement on the early retention of glass-fiber posts. Cylindrical glass-fiber posts were luted into 40 incisor roots with different adhesion strategies (n = 10): SB2, Single Bond 2 + conventional resin cement (RelyX ARC); AP, Scotchbond Multipurpose Plus (SBMP) activator + primer + ARC; APC, SBMP activator + primer + catalyst + ARC; and UNI, self-adhesive cement (RelyX Unicem). Pull-out bond strength results at 10 min after cementation showed APC > UNI > SB2 = AP (P < 0.
View Article and Find Full Text PDFCytotoxic effects of hard-setting cements applied on the odontoblast cell line MDPC-23.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod
October 2007
Objective: The present study evaluated the cytotoxic effects of hard setting applied on the odontoblastlike cells MDPC-23.
Study Design: Eighty round-shaped samples were prepared with the following experimental materials: calcium hydroxide, Vitrebond, RelyX Luting, and RelyX Unicem. The samples were placed in serum-free culture medium and incubated for 24 hours or 7 days at 37 degrees C with 5% CO2 and 95% air.