Galindo-Moreno Pablo, Fernández-Jiménez Andrés, O'Valle Francisco, Monje Alberto, Silvestre Francisco J, Juodzbalys Gintaras, Sánchez-Fernández Elena, Catena Andrés
Int J Oral Maxillofac Implants. 2015 Mar-Apr;30(2):384-90. doi: 10.11607/jomi.3804.
Control over marginal bone loss (MBL) and its progression is critical for preserving peri-implant tissue health. A moderate MBL over the first year has conventionally been associated with clinical success. However, different implants are associated with distinct amounts of MBL during their first functional year. Therefore, this study evaluated the MBL in pristine maxillary bone around implants with different types of implant-abutment connections and sought to determine the effect of other clinical factors on this tissue response.
Two hundred forty-six implants were placed in 101 patients with a mean age of 54.43 years. The MBL around two different types of implants (internal versus external prosthetic connection) was evaluated at 6 and 18 months after loading. Different variables were recorded to analyze their influence on radiographic parameters using a complex samples general linear model.
At 18 months, MBL ranged from 0 to 3.56 mm; less than 1 mm was lost around 46.3% (mesial) and 40.2% (distal) of the implants, while no bone was lost around 19.5% (mesial) and 19.9% (distal). The MBL was significantly higher around external than internal connections (0.714 vs 0.516 mm/year, respectively). Age, smoking habit, and connection type were directly related to mesial and distal MBL at 6 and 18 months postloading.
Implant design is a key factor in peri-implant MBL. Age and smoking also play major roles in maintaining the stability of peri-implant bone.
控制边缘骨丢失（MBL）及其进展对于维持种植体周围组织健康至关重要。传统上，第一年的适度MBL与临床成功相关。然而，不同的种植体在其第一个功能年期间的MBL量不同。因此，本研究评估了具有不同类型种植体-基台连接的种植体周围原始上颌骨中的MBL，并试图确定其他临床因素对这种组织反应的影响。
将246颗种植体植入101例平均年龄为54.43岁的患者体内。在加载后6个月和18个月时评估两种不同类型种植体（内部与外部修复连接）周围的MBL。记录不同变量，使用复杂样本通用线性模型分析它们对影像学参数的影响。
在18个月时，MBL范围为0至3.56毫米；46.3%（近中）和40.2%（远中）的种植体周围骨丢失小于1毫米，而19.5%（近中）和19.9%（远中）的种植体周围无骨丢失。外部连接周围的MBL明显高于内部连接（分别为0.714与0.516毫米/年）。年龄、吸烟习惯和连接类型与加载后6个月和18个月时的近中和远中MBL直接相关。
种植体设计是种植体周围MBL的关键因素。年龄和吸烟在维持种植体周围骨稳定性方面也起着重要作用。
