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Quintessence Publishing: Journals: AJED


The American Journal of Esthetic Dentistry

Edited by Richard J. Simonsen, DDS, MS

ISSN 2162-2833 (print) • ISSN 2162-2841 (online)

The American Journal of Esthetic Dentistry
Summer 2013
Volume 3 , Issue 2

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In Vitro Impact of a Glaze/ Composite Resin Sealant on the Surface Roughness and Bacterial Adhesion of One Microhybrid and Three Nanofilled Composite Resins

Salah Hasab Mahmoud, DDSc/Naglaa Rezk El-Kholany, DDSc/Mohammed EL-Awady Grawish, PhD/Salwa Abd El-Raof El- Negoly, PhD

Pages: 130–144
DOI: 10.11607/ajed.0060

The objective of this study was to evaluate and compare the surface roughness and adhesion of Streptococcus mutans bacteria to nanofilled, nanohybrid, nanoceramic, and microhybrid composite resins after different finishing/polishing protocols, including the use of a liquid glaze/composite resin sealant. The materials tested included one nanofilled (Filtek Supreme XT), one nanohybrid (Tetric EvoCeram), one nanoceramic (Ceram X Duo), and one microhybrid composite resin (Filtek Z250). The finishing/polishing methods were divided into five groups: group 1 = Mylar matrix strips, group 2 = diamond burs, group 3 = diamond-impregnated cured urethane dimethacrylate resin polishing disks (PoGo), group 4 = liquid glaze (G-COAT PLUS) after diamond burs, and group 5 = G-COAT PLUS after PoGo. From each material, 14 cylindric specimens were prepared for each group according to the manufacturers’ instructions. The surface roughness of half of the specimens was measured with a profilometer. Bacterial suspension (109 cfu/mL) was then added to the other half of the specimens, and the bacterial adhesion was measured. Data were analyzed with twoway analysis of variance followed by the Tukey honestly significant difference test and Pearson correlation analysis. The highest surface roughness and S mutans adhesion values were recorded in the Filtek Z250 and finishing bur groups. The lowest surface roughness and S mutans adhesion values were seen in the Filtek Supreme XT and Mylar matrix groups (P < .05). Liquid polisher was capable of reducing surface roughness and S mutans adhesion for all materials. Am J Esthet Dent 2013;3:130–144. doi: 10.11607/ajed.0060

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