Awaad Nesma Mohamed, Eladl Noha Mohamed, Abbass Nadia Ahmed
Department of Prosthodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt.
Open Access Maced J Med Sci. 2019 Feb 22;7(4):623-637. doi: 10.3889/oamjms.2019.108. eCollection 2019 Feb 28.
This randomized clinical study aimed to assess bone height loss when using mandibular implant overdentures retained by two and four endosseous implants using the telescopic attachments.
Twelve completely edentulous patients were randomly allocated so that six patients were treated by telescopic implant overdenture retained by two implants (group A) and six patients were treated with overdentures retained by four implants (group B). Digital radiographic evaluation of bone height using Digora was made starting at the functional loading day followed by time intervals of 12 months.
No implant loss during the healing period or after functional loading. Radiographic evaluation revealed a statistically significant difference was found between (Group A) and (Group B) were (p < 0.001).
For bone loss, widely distributed four intraforaminal implants revealed more bone preservation than only two implants when using the telescopic attachments to support and retain an over dentures taking in consideration the type of the attachment will be used.
本随机临床研究旨在评估使用套筒冠附着体的两颗和四颗骨内种植体固位的下颌种植覆盖义齿时的骨高度丧失情况。
12名全口无牙患者被随机分配,6名患者接受两颗种植体固位的套筒冠种植覆盖义齿治疗(A组),6名患者接受四颗种植体固位的覆盖义齿治疗(B组)。从功能加载日开始,每隔12个月使用Digora进行数字化影像学骨高度评估。
愈合期和功能加载后均无种植体丢失。影像学评估显示,A组和B组之间存在统计学显著差异(p < 0.001)。
对于骨丢失,在考虑将使用的附着体类型的情况下,当使用套筒冠附着体来支持和固位覆盖义齿时,广泛分布的四颗孔内种植体比仅两颗种植体显示出更多的骨保存。