Bencharit Sompop, Byrd Warren C, Hosseini Bashir
Assistant Professor, Department of Prosthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC.
Research Fellow, Department of Prosthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC.
J Prosthet Dent. 2015 Apr;113(4):262-9. doi: 10.1016/j.prosdent.2014.09.022. Epub 2015 Feb 20.
A missing or deficient buccal alveolar bone plate is often an important limiting factor for immediate implant placement. Titanium dental implants enhanced with porous tantalum-based trabecular metal material (PTTM) are designed for osseoincorporation, a combination of vascularized bone ingrowth and osseointegration (bone on-growth). Demineralized bone matrix (DBM) contains growth factors with good handling characteristics. However, the combination of these 2 materials in facial alveolar bone regeneration associated with immediate implant therapy has not been reported. A 65-year-old Asian woman presented with a failing central incisor. Most of the buccal alveolar bone plate of the socket was missing. A PTTM enhanced implant was immediately placed with DBM. Cone beam computed tomography scans 12 months after the insertion of the definitive restoration showed regeneration of buccal alveolar bone. A combination of a PTTM enhanced implant, DBM, and a custom healing abutment may have an advantage in retaining biologically active molecules and form a scaffold for neovascularization and osteogenesis. This treatment protocol may be a viable option for immediate implant therapy in a failed tooth with deficient buccal alveolar bone.
颊侧牙槽骨板缺失或不足通常是即刻种植的一个重要限制因素。采用多孔钽基小梁金属材料(PTTM)增强的钛牙种植体旨在实现骨结合,即血管化骨长入与骨整合(骨附着生长)的结合。脱矿骨基质(DBM)含有具有良好操作特性的生长因子。然而,这两种材料在与即刻种植治疗相关的面部牙槽骨再生中的联合应用尚未见报道。一名65岁的亚洲女性,其一颗中切牙出现功能丧失。牙槽窝的颊侧牙槽骨板大部分缺失。一枚PTTM增强种植体即刻植入,并同期植入DBM。在最终修复体植入12个月后的锥形束计算机断层扫描显示颊侧牙槽骨再生。PTTM增强种植体、DBM和定制愈合基台的联合应用在保留生物活性分子以及为新血管形成和成骨作用构建支架方面可能具有优势。对于颊侧牙槽骨不足的患牙进行即刻种植治疗,该治疗方案可能是一种可行的选择。