Influência da tentativa de aceleração da reação de presa de CIVAV na resistência de união à dentina hígida de molar decíduo

Yoshioka, Laysa, Hashizume, L. T., Magnago, B. D., Tedesco, Tamara Kerber, Calvo, Ana Flavia Bissoto and Raggio, Daniela Procida ORCID: https://orcid.org/0000-0002-0048-2068 2016. Influência da tentativa de aceleração da reação de presa de CIVAV na resistência de união à dentina hígida de molar decíduo. Brazilian Oral Research 30 (s1) , p. 494.

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Abstract

Abstract: To evaluate the influence of the attempt to accelerate the prey reaction of high viscosity glass ionomer cements (CIVAV) on dentin union resistance (RU). After approval by CEP-FOUSP, 80 healthy deciduous molars allocated in 8 groups (n=10) were selected according to the presentation of civav - powder-liquid (Fuji Gold Label IX GP) - group F or encapsulated (Equi a Fil) - group E and initial prey acceleration attempt with application of ultrasound - 20s (U) or halogen light - 60s (F) or LED -60s (L) or control (C). The occlusal enamel was removed in a politriz with water sandpaper #220, after #600 for 60s to standardize dentinal mud. Under the pretreated dentin, polyethylene cannulas (1.0 mm height) were positioned and filled by the CIVAV according to the group. After storage (24h/37ºC) a microshear test (1mm/min) was performed until a fracture of the specimen occurred. After that, they were analyzed under a stereoscopic microscope (400X) to determine the type of fracture (adhesive, mixed or cohesive). The data were submitted to ANOVA and Tukey test (p<0.05). ANOVA showed statistical difference for the factor *presentation of CIVAV* and for interaction between the factors *presentation of CIVAV* and *external energy source*. The mean and standard deviation were: FU 7.73 (± 2.40)A, FF 3.70 (± 0.86)B, FL 5.84 (± 3.16)A, FC 5.64 (± 2.15)B, EU 3.51 (± 1.27)C, EF 4.82 (± 1.74)C, EL 4.44 (± 2.21)C, EC 3.29 (± 1.41)C. The predominant fracture type was mixed type

Item Type:	Article
Status:	Published
Schools:	Dentistry
Publisher:	SBPqO
ISSN:	1807-3107
Last Modified:	10 Nov 2022 10:56
URI:	https://orca.cardiff.ac.uk/id/eprint/148763

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