OBJECTIVES: This study evaluated the human pulp response to the application of two RMGICs in deep cavities in vivo. METHODS: The cavity floor prepared on the buccal surface of 34 premolars was lined with VBP (VBP), Vitrebond (VB) or Dycal® (DY), and restored with composite resin. Additional teeth were used as an intact control group. After 7 or 30-60 days, the teeth were extracted and processed for histological evaluation. The following histological events were scored: inflammatory response, tissue disorganization, reactionary dentin formation and presence of bacteria. RESULTS: At 7 days, VBP and VB elicited a mild inflammatory pulpal response in about 70% of specimens and in 1 specimen for DY. Only 1 specimen of each RMGICs exhibited moderate tissue disorganization. Bacteria and reactionary dentin formation were not found. At 30-60 days, about 20% of specimens lined with RMGICs showed a persistent mild inflammatory pulp response while no inflammatory reaction was observed for DY. Moderate tissue disorganization occurred with both materials. Bacteria were found only in 1 VBP specimen. The mean remaining dentin thickness (RDT) in specimens lined with VBP, VB or DY ranged from 342.3 to 436.1μm, and no statistically significant differences in RDT were found among materials or periods (two-way ANOVA, p>0.05). Comparison of the two RMGICs tested for the histological events at each period showed statistically similar results (Kruskal-Wallis, p>0.05). SIGNIFICANCE: The use of the new Vitrebond formulation (VBP) in deep cavities in vivo caused mild initial pulp damage, which decreased with time, indicating acceptable biocompatibility.
OBJECTIVES: This study evaluated the human pulp response to the application of two RMGICs in deep cavities in vivo. METHODS: The cavity floor prepared on the buccal surface of 34 premolars was lined with VBP (VBP), Vitrebond (VB) or Dycal® (DY), and restored with composite resin. Additional teeth were used as an intact control group. After 7 or 30-60 days, the teeth were extracted and processed for histological evaluation. The following histological events were scored: inflammatory response, tissue disorganization, reactionary dentin formation and presence of bacteria. RESULTS: At 7 days, VBP and VB elicited a mild inflammatory pulpal response in about 70% of specimens and in 1 specimen for DY. Only 1 specimen of each RMGICs exhibited moderate tissue disorganization. Bacteria and reactionary dentin formation were not found. At 30-60 days, about 20% of specimens lined with RMGICs showed a persistent mild inflammatory pulp response while no inflammatory reaction was observed for DY. Moderate tissue disorganization occurred with both materials. Bacteria were found only in 1 VBP specimen. The mean remaining dentin thickness (RDT) in specimens lined with VBP, VB or DY ranged from 342.3 to 436.1μm, and no statistically significant differences in RDT were found among materials or periods (two-way ANOVA, p>0.05). Comparison of the two RMGICs tested for the histological events at each period showed statistically similar results (Kruskal-Wallis, p>0.05). SIGNIFICANCE: The use of the new Vitrebond formulation (VBP) in deep cavities in vivo caused mild initial pulp damage, which decreased with time, indicating acceptable biocompatibility.
Authors: Juliana Rosa Luiz Alonso; Ana Paula Silveira Turrioni; Fernanda Gonçalves Basso; Carlos Alberto de Souza Costa; Josimeri Hebling Journal: Lasers Med Sci Date: 2016-02-12 Impact factor: 3.161
Authors: Adriano Fonseca Lima; Ana Paula Dias Ribeiro; Fernanda Gonçalves Basso; Vanderlei Salvador Bagnato; Josimeri Hebling; Giselle Maria Marchi; Carlos Alberto de Souza Costa Journal: Lasers Med Sci Date: 2013-03-23 Impact factor: 3.161
Authors: Débora Lopes Salles Scheffel; Nancy Tomoko Sacono; Ana Paula Dias Ribeiro; Diana Gabriela Soares; Fernanda Gonçalves Basso; David Pashley; Carlos Alberto de Souza Costa; Josimeri Hebling Journal: J Dent Date: 2015-03-06 Impact factor: 4.379