骨矿物质密度作为初级植入物稳定性的标准:回顾性CBCT分析
Tahseen Ali Khan1, Mehnaaz Sultana Syeda2, Pradeep Koppolu3
1Department of Surgical and Diagnostic Sciences, Dar Al Uloom University, Riyadh, KSA.
National journal of maxillofacial surgery
|June 13, 2025
概括
通过圆束计算机断层扫描 (CBCT) 测量较高的骨密度与更大的插入扭矩和改善的牙科植入成功率有关. CBCT有助于评估骨质量,以防止植入物失败.
科学领域:
- 牙科 牙科是指牙科的专业.
- 在口腔外科手术.
- 放射学 放射学是一门学科.
背景情况:
- 牙植入成功受到骨质的影响.
- 准确评估骨密度对于可预测的植入物结果至关重要.
- 圆束计算机断层扫描 (CBCT) 提供了大骨的详细成像.
研究的目的:
- 为了研究通过CBCT测量的骨密度与插入扭矩值之间的相关性.
- 评估各种大和下部位的骨密度与口腔植入成功之间的关系.
主要方法:
- 七十三名患者在2008年至2011年期间接受了118个诺贝尔替换选择圆形植入物.
- 使用CBCT扫描来评估骨密度,用Hounsfield单位 (HU) 进行测量.
- 在植入物放置期间,插入扭矩以牛顿厘米 (Ncm) 记录.
主要成果:
- 在所有部位的骨密度和插入扭矩之间发现了强烈的正相关性.
- 成功的植入物 (112) 的平均骨密度为678 ± 217 HU,扭矩为36 ± 2 Ncm.
- 失败的植入物 (6) 呈现较低的平均骨密度 (459 ± 131 HU) 和扭矩 (28 ± 5 Ncm).
结论:
- 在植入牙之前,CBCT是评估骨密度的宝贵工具.
- 通过CBCT评估骨质量可以帮助临床医生避免在骨密度差的区域进行植入,降低失败风险.
相关概念视频
Crystal Density
The crystal lattice structure of a material allows us to determine how many molecules exist in its unit cell. With this information, alongside the unit-cell parameters - three distance parameters (a, b, c) and three angular parameters (α, β, γ).Density (ρ) = (Z × M) / (a × b × c × NA)where:Z is the number of formula units per unit cellM is the molar mass of the substancea, b, and c are the edge lengths of the unit cellNA is Avogadro’s numberFor a simple cubic lattice, atoms are located only at...
Bulk Density of Aggregate
Bulk density refers to the mass of aggregate particles that would fill a unit volume. The concept of bulk density originates from the inability to pack aggregate particles in a manner that completely eliminates void spaces. Hence, the term bulk refers to the volume that encompasses both the aggregates and the voids. This measurement is crucial when aggregates are batched by volume and is used to convert quantities by mass to volume.
Most natural mineral aggregates, like sand and gravel,...
Most natural mineral aggregates, like sand and gravel,...


