在批量填充树脂和双固化核心树脂之间比较聚合行为,微硬度和压力强度
Hye Jeong Kim1, Jiyoung Kwon2, Hyun-Jung Kim2
1Department of Conservative Dentistry, Graduate School, Kyung Hee University, Seoul, Korea.
BMC oral health
|July 2, 2025
概括
大量填充树脂复合材料显示出比传统和双固化核心树脂更好的聚合收缩和固化深度 (DOC). 高度填充的散装填充树脂可用于深腔和内牙后修复.
科学领域:
- 牙科材料科学 牙科材料科学
- 聚合物化学 聚合物化学
- 恢复性牙科 恢复性牙科
背景情况:
- 核心修复材料对于牙完整性至关重要.
- 双固化和散装树脂复合材料为传统材料提供了替代品.
- 了解它们的特性对于临床成功至关重要.
研究的目的:
- 为了比较聚合缩水,固化深度 (DOC) 和压力强度.
- 为了评估双固化核心树脂和LC散装填充复合材料.
- 评估它们对于核心修复的适用性.
主要方法:
- 测试了批量填充 (菲尔特克一批量填充,批量填充基,Metafil Bulkfill One) 和双固化核心树脂 (Luxacore Z,Any-Core) 与传统LC树脂 (菲尔特克Z350,metafil flo) 相比.
- 测量了线性聚合缩水,通过微硬度的DOC和压力强度.
- 使用单向ANOVA和Duncan的后期测试分析了数据.
主要成果:
- 双固化核心树脂表现出比散装和传统树脂更高的聚合收缩率.
- 与传统树脂相比,散装树脂显示出更高的DOC.
- 压缩强度在散装树脂之间有所不同,在双固化核心树脂的双固化模式下更高.
结论:
- 大量填充树脂比传统和双固化核心树脂提供了更好的聚合收缩和DOC.
- 大量填充复合材料在4mm深度达到足够的DOC,与一些双固化核心树脂不同.
- 高密度填充的散装填充树脂显示出有希望的可预测的修复材料,用于深腔和后内牙内核.
更多相关视频
05:30Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials
Published on: January 10, 2025
759
07:42Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
465
相关概念视频
Accelerated Curing of Concrete
268
Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
268
Strength of Cement
221
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...
221
Mortar Properties
190
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...
190
Bonding and Strength of Aggregate
265
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...
265
Behavior of Concrete Under Compressive Load
280
Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...
As the concrete specimen fractures under...
280
Additives and Fillers in Concrete
135
Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
The...
135
