Picolo Mayara Zaghi Dal, Andre Carolina Bosso, Kantovitz Kamila Rosamilia, Carvalho Gabriela Luiza Moreira, Costa Bruna Carolina, Lisboa-Filho Paulo Noronha, Cavalli Vanessa
Faculdade São Leopoldo Mandic (SLMAMDIC), Rua José Rocha Junqueira 13, Swift, Campinas, SP, Brazil.
Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas (UNICAMP), Avenida Limeira, 901, Bairro Areião, Piracicaba, SP, Brazil.
Odontology. 2024 Dec 13. doi: 10.1007/s10266-024-01037-6.
This study evaluated the surface roughness, color change, and antibacterial effect of a ceramic glaze enhanced with TiO nanotubes (n-TiO). n-TiO (0, 2, 2.5, and 5 wt%) was added to a ceramic glaze powder, applied to the surface of forty feldspathic ceramic specimens, and sintered. The surface roughness average (Ra) before glaze application (T0) and after glaze crystallization (T1) was measured using a profilometer. The colorimetric alteration was determined by CIEDE2000 (ΔE) and CIELab (ΔEab), and the whiteness index for dentistry (ΔW). The antibacterial effect against S. mutans and S. sanguinis was evaluated (CFU/mL). Data were analyzed by two-way repeated-measures ANOVA, followed by the Bonferroni test (α = 0.05). No differences in ΔE and ΔE were observed among groups (p > 0.05), and ΔW was only affected by 5% n-TiO. All groups surpassed the perception thresholds of 1.8 (ΔE) and 2.3 (ΔE). At T0, no Ra differences were detected among groups (p > 0.05). In T1, Ra decreased (p < 005) compared to T0, but 5% n-TiO increased roughness compared to the control group (without n-TiO). The incorporation of n-TiO into the glaze powder did not impair bacteria adhesion, and no differences in biofilm formation were found among the concentrations (p < 0.05). The ceramic covered with a glaze containing 5% n-TiO caused minimal interference in the color and roughness with no effect on biofilm formation.
本研究评估了用二氧化钛纳米管（n-TiO）增强的陶瓷釉的表面粗糙度、颜色变化和抗菌效果。将n-TiO（0、2、2.5和5 wt%）添加到陶瓷釉粉中，涂覆在40个长石质陶瓷试件表面并烧结。使用轮廓仪测量施釉前（T0）和釉结晶后（T1）的表面粗糙度平均值（Ra）。通过CIEDE2000（ΔE）和CIELab（ΔEab）以及牙科白度指数（ΔW）确定比色变化。评估对变形链球菌和血链球菌的抗菌效果（CFU/mL）。数据通过双向重复测量方差分析进行分析，随后进行Bonferroni检验（α = 0.05）。各组之间未观察到ΔE和ΔE的差异（p > 0.05），且ΔW仅受5% n-TiO的影响。所有组均超过了1.8（ΔE）和2.3（ΔE）的感知阈值。在T0时，各组之间未检测到Ra差异（p > 0.05）。在T1时，与T0相比，Ra降低（p < 0.05），但与对照组（无n-TiO）相比，5% n-TiO增加了粗糙度。将n-TiO掺入釉粉中不会损害细菌粘附，且各浓度之间在生物膜形成方面未发现差异（p < 0.05）。覆盖有含5% n-TiO釉的陶瓷对颜色和粗糙度的干扰最小，对生物膜形成无影响。
