评估植入周围骨微架构:传统与骨密度钻探 - 活体分析
Breno Fortes Bittar1, Bruno Salles Sotto-Maior1, Karina Lopes Devito1
1School of Dentistry, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil.
Brazilian dental journal
|March 27, 2024
概括
与传统技术 (CT) 相比,骨密度化 (OD) 显著提高了牙植入物的初级稳定性,通过增加插入扭矩和改善围绕植入物的骨微架构. 这种技术导致骨体积增加,骨更密集,促进更好的骨质整合.
科学领域:
- 生物材料科学 生物材料科学
- 牙科植入物学 牙科植入物学
- 骨微架构分析 骨微架构分析
背景情况:
- 主要植入物稳定性对于成功的骨整合至关重要.
- 钻孔技术显著影响牙科植入物周围的骨床特征.
- 骨凝固 (OD) 是一种替代的钻孔方法,旨在保持和提高骨质.
研究的目的:
- 为了比较初级植入物稳定性和常规钻井 (CT) 和骨密度化 (OD) 之间的围植骨微架构.
- 使用这两种技术来评估植入物插入扭矩 (IT) 和植入物稳定率 (ISQ).
- 用微型计算机断层扫描 (μCT) 来分析椎骨微观结构的变化.
主要方法:
- 使用猪骨模型 (n=12),分为CT (n=6) 和OD (n=6) 组.
- 钻井后安装了植入物,并测量了IT和ISQ.
- 用μCT进行微架构评估,分析了周围植入物骨片段.
主要成果:
- 与CT (7.67Ncm) (p=0.0005) 相比,OD导致了显著更高的插入扭矩 (19.78Ncm).
- 在OD (63.25) 和CT (61.33) (p=0.48) 之间没有观察到植入物稳定系数 (ISQ) 的显著差异.
- 与CT相比,OD显著增加了植入周骨体积 (32.01 mm3 vs 23.17 mm3) 和改善了状骨参数 (分离,数量,厚度) (p<0.05).
结论:
- 骨凝固通过增加插入扭矩来增强主要植入物的稳定性.
- 奥迪促进了植入周围骨微架构的有利变化,包括增加骨体积和改善椎密度.
- 这些发现表明,OD可能比传统技术更有优势,可以实现更好的初级稳定性和骨整合.
相关概念视频
01:55Bone Structure
Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.
01:27Compact Bone
Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
01:09Spongy Bone
All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...