β-可以为口腔植入学带来什么增强?
Clarisse Montet1, Hazem Abouelleil2, Cerine Labadi3
1Universite Claude Bernard Lyon 1, UMR 5615, Villeurbanne 69621, France.
概括
贝塔相合金对牙科植入物具有前景,比目前的材料,如cp-Ti等级IV和Ti-6Al-4V,提供更好的机械性能和生物相容性. 需要进一步的研究来确认它们的长期临床成功.
科学领域:
- 生物材料科学 生物材料科学
- 牙科材料 牙科材料
- 材料工程 材料工程 材料工程
背景情况:
- 由于生物相容性和机械强度,及其合金是牙科植入物的标准.
- 商用纯 (cp-Ti) 等级IV和Ti-6Al-4V合金具有局限性,包括高弹性模量,耐磨性问题和潜在的离子释放问题.
研究的目的:
- 审查β相合金作为口腔植入学先进材料的潜力.
- 为了突出它们在现有的基牙科植入物材料上的优势.
主要方法:
- 文献审查侧重于ISO标准和牙科生物材料的临床要求.
- 分析基于的材料的机械性能和生物相容性,重点是β相合金.
主要成果:
- 第四级Cp-Ti具有局限性:高弹性模量和不良耐磨性.
- Ti-6Al-4V提供强度,但由于Al和V离子释放,引起生物相容性问题.
- 贝塔相合金具有较低的弹性模量,增强的强度和更好的耐腐蚀性,使其适用于牙科植入物.
结论:
- 贝塔相合金显示出克服口腔植入学当前材料限制的潜力.
- 它们有利的生物力学特性和缺乏有毒元素的释放表明增强了植入物性能和寿命.
- 进一步的体外和体内研究对于验证它们的安全性和长期临床疗效至关重要.
相关概念视频
Drug Delivery: Enteral Route
The enteral drug administration involves three primary routes: oral, sublingual, and buccal. Oral ingestion is the most prevalent, safe, economical, and convenient method for drug administration. However, it has certain drawbacks, including limited absorption due to the drug's low water solubility or poor membrane permeability, possible emesis from GI mucosa irritation, destruction of drugs by digestive enzymes or low gastric pH, and irregular absorption along with food or other drugs.
Drugs in...
Drugs in...
Bioavailability Enhancement: Drug Permeability Enhancement
After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt secretion,...
Bioavailability Enhancement: Drug Stability Enhancement and GI Retention
Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
Oral Drug Delivery Systems: Introduction
Oral drug delivery is the most common route of administration due to its convenience, cost-effectiveness, and high patient compliance. It enables precise formulation to ensure proper drug dosage and bioavailability. The development of oral dosage forms considers drug properties such as solubility, stability, and absorption to optimize therapeutic efficacy.Tablets, capsules, liquids, and chewable formulations enhance drug stability, mask undesirable tastes, and improve patient experience.
The Oral Microbiota
The oral microbiome includes a complex ecosystem comprising over 700 microbial species, identified through genomic sequencing and culture-based analyses to date. This community includes a core microbiome, found universally among individuals, and a variable component influenced by environmental factors such as diet, lifestyle, and host genetics. Site-specific conditions, including oxygen gradients, pH levels, and nutrient availability, determine the spatial distribution of these microorganisms...
Development of the Oral Microbiota
The establishment of the oral microbiome begins before birth, challenging the long-held belief that the fetal oral cavity is sterile. The presence of oral microbes such as Streptococcus and Fusobacterium in amniotic fluid suggests that microbial exposure may occur in utero, potentially through translocation from the maternal oral or gastrointestinal tract. This early colonization primes the neonatal immune system and sets the stage for subsequent microbial succession. Maternal health,...


