评估三种不同的粘合剂在陶冠表面上的正牙支架的粘合强度:一项比较研究
Brajendu1, Irfanul Haque2, George Sam3
1Department of Orthodontics and Dentofacial Orthopedics, Hazaribag College of Dental Sciences and Hospital, Hazaribag, Jharkhand, India, Phone: +91 9931915167,
The journal of contemporary dental practice
|December 9, 2024
概括
与Assure Plus和Transbond XT相比,RelyX Unicem在陶冠上表现出最强的结合强度. 这一发现对于在人造表面上成功粘合正义牙科支架至关重要.
科学领域:
- 牙科材料科学 牙科材料科学
- ортодонтическая技术 ортодонтическая 技术 ортодонтическая 技术
- 生物材料工程 生物材料工程
背景情况:
- 将正义牙科支架粘合到陶冠上,在实现持久粘合方面提出了独特的挑战.
- 成年患者寻求正牙治疗的患病率越来越高,因此需要对人工表面使用可靠的粘合剂.
研究的目的:
- 用三种不同的粘合剂评估和比较与陶冠结合的正义牙科支架的剪接强度:Transbond XT,RelyX Unicem和Assure Plus.
主要方法:
- 准备了60颗带有陶冠的提取的前牙,并将其分为三组 (n=20).
- 支架使用Transbond XT,RelyX Unicem或Assure Plus进行粘合.
- 使用通用测试机测试剪接强度,使用立体显微镜评估粘合残留指数.
主要成果:
- RelyX Unicem 显示了最高的平均剪接强度 (19.38 ± 0.84 MPa),其次是 Transbond XT (17.12 ± 1.04 MPa) 和 Assure Plus (16.14 ± 1.02 MPa).
- 在RelyX Unicem和另外两种药物之间,以及Transbond XT和Assure Plus之间观察到显著的差异.
- 粘附残留指数得分有所不同,Transbond XT显示得分比例更高1,Assure Plus显示得分比例更高2.
结论:
- 与Transbond XT和Assure Plus相比,RelyX Unicem在陶冠上表现出更高的结合强度.
- 这些发现表明,RelyX Unicem可能为陶修复器的正牙支架粘合提供更可靠的选择.
相关概念视频
Bonding and Strength of Aggregate
139
The bond between aggregate particles and the cement matrix is significantly influenced by the shape and surface texture of the aggregates. High-strength concretes benefit from a rougher texture, which leads to stronger bonding due to greater adhesion. Angular aggregates with larger surface areas also enhance this bond. The bonding quality, however, is complex to assess as no universally accepted test exists. Good bonding is indicated when a crushed concrete specimen shows some aggregate...
139
Mortar Properties
112
Mortar properties encompass a range of characteristics crucial for construction and masonry work, including workability, water retention, bond strength, durability, compressive strength, volume change, and appearance. Workability refers to mortar's ability to be easily applied and manipulated without sagging or falling off surfaces, which is important for efficient masonry unit placement and alignment. Water retention is essential to prevent the mortar from losing moisture too quickly to...
112
Strength of Cement
124
Strength tests for cement are not performed directly on neat cement paste due to difficulty in obtaining consistent, reliable specimens. Instead, cement is typically tested in the form of cement-sand mortar.
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in...
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in...
124


