含正畸矫治器人工唾液中低龋风险的镍释放和变形链球菌活力:体外研究

IF 0.8 Q4 DENTISTRY, ORAL SURGERY & MEDICINE
Serap Titiz, Zalike Keskin Erdoğan, Elif Esin Hames Tuna, Aynur Aras
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引用次数: 0

摘要

目的:本研究的目的是确定与低龋风险对应的不同水平的变形链球菌对镍释放的影响,并确定变形链球菌的生存能力。方法:分别在第7天接种变形链球菌或不接种变形链球菌的情况下,将铜镍钛、镍钛或不锈钢组成的模拟固定正畸器浸泡在Klimek人工唾液中10 d。将相同水平的变形链球菌培养物(4 × 104 cfu/mL)接种到不使用正畸矫治器的人工唾液中。采用电感耦合等离子体质谱法检测镍的释放。采用原子力显微镜和扫描电镜对弓丝表面进行了分析。结果:未使用正畸矫治器的人工唾液中变形链球菌密度显著升高(P < 0.05)。与铜镍钛和不锈钢弓丝相比,镍钛合金器具在有变形链球菌或不含变形链球菌的人工唾液中的镍释放量更高(P < 0.05)。然而,变形链球菌仅在不锈钢弓丝正畸矫治器中增加镍释放(P < 0.05)。原子力显微镜显示,不锈钢弧线的表面比镍钛和镍钛弧线光滑,变形链球菌只增加了SS弧线的表面粗糙度。变形链球菌粘附在所有的弧线类型上。结论:虽然腐蚀或与腐蚀相关的过程可能会降低变形链球菌的生长能力,但反过来,变形链球菌也影响腐蚀。粗糙的表面也会促进腐蚀;因此,应评估金属合金正畸矫治器的表面粗糙度,以确定其腐蚀行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nickel Release and the Viability of Streptococcus mutans Corresponding to Low Risk of Dental Caries in Artificial Saliva Containing Orthodontic Appliances: In Vitro Study.

Objective: The aims of this study were to determine the effect of different levels of Streptococcus mutans that correspond to a low risk of dental caries on nickel release and to determine the viability of S. mutans.

Methods: Simulated fixed orthodontic appliances composed of copper nickel titanium, nickel titanium, or stainless steel were immersed in Klimek artificial saliva for 10 days with or without S. mutans inoculation on day 7. Same levels of S. mutans cultures (4 × 104 cfu/mL) were inoculated into the artificial saliva without orthodontic appliances. Nickel release was detected by inductively coupled plasma mass spectrometry. The archwire surface was analyzed by atomic force microscopy and scanning electron microscopy.

Results: The density of S. mutans significantly increased in the artificial saliva without orthodontic appliances (P < .05). Appliances with nickel titanium alloys showed higher nickel release in the artificial saliva with or without S. mutans than those with copper nickel titanium or stainless steel archwires (P < .05). However, S. mutans increased nickel release only in orthodontic appliances with stainless steel archwires (P < .05). Although atomic force microscopy showed that the surface of as-received stainless steel archwires was smoother than that of nickel titanium or nickel titanium archwires, S. mutans increased the surface roughness of only the SS archwires. S. mutans adhered to all archwire types.

Conclusion: While corrosion or corrosion-related processes may have decreased the growth capacity of S. mutans, reciprocally, S. mutans influenced corrosion. Rough surfaces can also promote corrosion; therefore, the surface roughness of metal alloy orthodontic appliances should be evaluated to determine their corrosion behavior.

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来源期刊
Turkish Journal of Orthodontics
Turkish Journal of Orthodontics Dentistry-Orthodontics
CiteScore
2.10
自引率
9.10%
发文量
34
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