在NiTi正牙线表面完整性上对化物和天然口水进行比较分析
Gabriela Mishell Salinas Sánchez1, Marjory Elizabeth Vaca Zapata1, Mauricio Aguirre Balseca1
1Department of Health Sciences, University of the Hemispheres, Quito, Ecuador.
Biomaterial investigations in dentistry
|December 26, 2025
概括
化物/化和天然口水都显著增加了-弧线表面粗度. 这种表面变化可能会影响正牙治疗的结果,因此需要在治疗期间仔细选择口水.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 矯正牙科 矯正牙科是一種矯正牙科.
背景情况:
- - (NiTi) 弧线在矯正牙科中至关重要.
- 在正牙治疗期间使用口水是常见的.
- 不同口水配方对NiTi弧线表面性能的影响尚未完全理解.
研究的目的:
- 为了评估两种商业口水在NiTi弧线表面粗度上的体外效应.
- 为了比较含有化物和化的口水和含有天然配方的口水引起的表面粗度变化.
主要方法:
- 三十个NiTi弧线线段被分为三个组:对照组,Encident Brackets® (化/化) 和BambooSmile® (天然).
- 样品被浸泡在人造唾液中,然后暴露在口水溶液中,模拟30天的临床使用.
- 在浸泡前和浸泡后使用形仪测量表面粗度 (Rz),并使用学生t测试和ANOVA进行统计分析.
主要成果:
- 与基线相比,Encident Brackets®和BambooSmile®都显著增加了NiTi弧线表面粗度 (p <0.05).
- 在两个口水组中,平均Rz值从大约0.8μm增加到超过2.0μm.
- 在治疗后,两组口水组之间没有发现表面粗度的显著差异 (p > 0.05).
结论:
- 传统的和天然的口水都会对NiTi弧线造成显著的表面变化.
- 两种口水类型所引起的表面粗度增加可能会对正力学和口腔健康产生负面影响.
- 临床建议应考虑口水成分,以减轻对NiTi弧线的潜在不良影响.
相关概念视频
Classification of Titrimetric Analysis Based on Reaction Types
Titrimetric analysis in solution chemistry involves measuring the volume of solutions and is often called volumetric analysis. The standard solution of known concentration in the burette is called the titrant, whereas the solution of unknown concentration in the flask is called the analyte, or titrand. Titrimetric analyses can be classified into four types based on the reactions between the titrant and analyte.
Titrations between an acid and a base lead to neutralization reactions that form...
Titrations between an acid and a base lead to neutralization reactions that form...
Precipitation Titration Curve: Analysis
The precipitation titration curve demonstrates the change in concentration of one reactant with the volume of titrant added. During the titration of chloride ions with silver nitrate, the precipitation titration curve is divided into three regions: before, at, and after the equivalence point. Before the equivalence point, low redissolution of the sparingly soluble silver chloride precipitate gives a low silver ion concentration. However, in the second region, representing the equivalence point,...
Precipitation Gravimetry
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
Precipitation and Co-precipitation
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
Complexometric Titration: Ligands
Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
Testing Water Quality
When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...


