面膜表面涂层对由于含铁的补充剂对母牙的染色能力的影响:一项实验室研究
Barkha Bansal1, Pratik B Kariya1, Bhavna Haresh Dave1
1Department of Pediatric and Preventive Dentistry, K M Shah Dental College and Hospital, Sumandeep Vidyapeeth Deemed to be University, Vadodara, Gujarat, India.
概括
预防铁补充剂引起的儿童牙染色至关重要. 像GC-Equia®-forte-coat和MI VarnishTM这样的面涂料显著减少了母牙上的染色.
科学领域:
- 牙科材料科学 牙科材料科学
- 儿科牙科 儿科牙科
- 预防性牙科 预防性牙科
背景情况:
- 铁补充剂对于贫血儿童至关重要,但可能导致母牙染色.
- 需要采取预防策略来缓解这种常见的副作用.
研究的目的:
- 为了评估不同面膜表面涂层在防止铁补充剂诱导的牙染色在母牙的有效性.
- 评估牙表面完整性 (声音与非矿物化) 对防止染色的影响.
主要方法:
- 在体外实验研究中,使用了144个初级切口器.
- 根据质涂层,样品被分为四组:没有涂层,MI化物漆TM,GC G-coat PlusTM和GC-Equia®-forte-coat.
- 牙暴露在铁补充剂中,并在90天内使用数字光谱仪测量颜色变化.
主要成果:
- GC-Equia®-forte-coat显著减少了健康牙的颜色变化 (p=0.017).
- 在非矿物化牙中,MI VarnishTM的颜色变化最少 (P=0.042).
- 总体而言,GC-Equia®-forte-coat表现出最少的颜色变化,其次是MI VarnishTM和GC G-coat PlusTM.
结论:
- 面膜涂层,特别是GC-Equia®-forte-coat和MI VarnishTM,可以有效地减少铁补充剂引起的牙染色.
- 这些涂层为接受铁补充治疗的儿童提供了可行的预防措施.
相关概念视频
01:18Effects of EDTA on End-Point Detection Methods
302
Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...
302
01:26EDTA: Auxiliary Complexing Reagents
616
EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...
616
01:20Complexometric EDTA Titration Curves
968
EDTA titration curves determine the free metal ion concentration. The titration curve represents the change in concentration of free metal ions (p function) as a function of the volume of EDTA added. This curve consists of three regions: before, at, and after equivalence points. Excess free metal ions are present before the equivalence point. Equal concentrations of metal ions and EDTA are present at the equivalence point. After the equivalence point, excess EDTA exists. This means slight...
968