Evaluation of different composite resin finishing and polishing protocols by confocal laser scan microscopy

Kayo Matheus Rodrigues de Souza

Federal University of Pernambuco – UFPE, Department of Prosthesis and Oral Surgery, Recife, PE, Brasil.

Roberto Victor de Melo Silva

Federal University of Pernambuco – UFPE, Department of Prosthesis and Oral Surgery, Recife, PE, Brasil.

Marlon Ferreira Dias

São Paulo State University – UNESP, Department of Dental Materials and Prosthesis, Araraquara, SP, Brasil.

Paulo Cardoso Lins-Filho

Federal University of Pernambuco – UFPE, Department of Prosthesis and Oral Surgery, Recife, PE, Brasil.

Claudio Heliomar Vicente da Silva

Federal University of Pernambuco – UFPE, Department of Prosthesis and Oral Surgery, Recife, PE, Brasil.

Renata Pedrosa Guimarães

Federal University of Pernambuco – UFPE, Department of Prosthesis and Oral Surgery, Recife, PE, Brasil.

Corresponding author: Renata Pedrosa Guimarães Federal University of Pernambuco - UFPE, Department of Prosthesis and Oral Surgery, Recife, PE, Brasil renatapguimaraes@gmail.com

Material/ Manufacturer	Lot	Type	Shade	Inorganic load (type)	Inorganic load (size)
Filtek Z250/3M-ESPE/USA	1725800273	Microhybrid	A3	Silica Zirconia/Silica	20nm 0.1 – 10 μm
Filtek Z350/3M- ESPE/USA	1810100515	Nanoparticle	A3B	Silica Zirconia Zirconia/Silica	20nm 4 a 11nm 4 a 11nm/20nm
Filtek One Bulk Fill/ 3M-ESPE/USA	1814300172	Nanohybrid	A3	Silica Zirconia Zirconia/Silica Ytterbium Trifluoride	20nm 4 a 11nm 4 a 11nm/20nm 100nm
Filtek P60/3M-ESPE/USA	1818700369	Microhybrid	A3	Zirconia/Silica	0.01 a 3.5 microns

INSTRUMENT (MANUFACTORER)	PROTOCOLS
Diamond tip (KG/Sorensen)	The diamond bur of extra fine granulation # 3195FF, in high rotation, was used on the specimens, for 5 seconds, under constant refrigeration.
Soflex Pop-on XT (3MESPE)	The discs were used sequentially, from the largest to the smallest granulation, which were applied for 15s each, with washing through water / air spray for 10s between each disc.
Soflex Spiral (3MESPE)	After finishing with the most granulated disc in the Soflex Pop-on XT System, pre-polishing was performed with the disc based on aluminum oxide (beige) applied for 15s in counterclockwise rotation, washing with water / air spray for 10s, drying, and polishing with the diamond disc (pink) at the same time.
Abrasive Rubbers (American Burs)	Sequential application with abrasive rubbers, most granulated (initial finishing and smoothing), medium (polishing and scratch removal) and fine (final gloss) was performed for 15s each, interspersed by washing with water / air spray for 10s.
Praxis system (TDV)	Discs were used in the 4 granulations successively, from the thickest to the finest, 20s of each disc, interspersed by washing with water / air jets for 10s and drying.

Brasil