Helal Eman, El-Zawahry Mohamed, Gouda Ayman, Elkhadem Amr Hosny, Ibrahim Samira Ibrahim
National Research Center, Fixed and Removable Prosthodontics, Cairo, Egypt.
Faculty of Oral and Dental Medicine, Oral and Maxillofacial Surgery, Cairo University, Cairo, Egypt.
Open Access Maced J Med Sci. 2017 Mar 15;5(1):72-78. doi: 10.3889/oamjms.2017.004. Epub 2017 Jan 18.
This study was established to evaluate the amount of bone height changes in the posterior mandibular area of edentulous patients receiving screw-retained prostheses versus removable telescopic implant overdentures.
Every patient received four inter-foraminal implants regarding the mandibular arch and four anterior implants for the maxillary arch, computer guided surgical guides were planned for the insertion of the implants accurately with a flapless technique. Panoramic radiographs were made immediately, six months and twelve months after the prostheses` use proportional area and vertical measurements were applied to determine changes in the bone height of the posterior mandibular edentulous area.
After twelve months, a statistically non-significant amount of bone resorption was reported for both groups.
Up to the limitations of this study both treatment options the screw retained and telescopic overdenture can be used for rehabilitation of completely edentulous patients. These cases must be followed for a longer period to have a definite answer regarding their efficiency in the long run.
本研究旨在评估接受螺丝固位修复体的无牙颌患者与可摘套筒冠种植覆盖义齿患者下颌后部区域的骨高度变化量。
每位患者在下颌弓植入4枚孔间种植体，在上颌弓植入4枚前部种植体，采用计算机引导手术导板，通过无瓣技术精确植入种植体。在义齿使用后即刻、6个月和12个月拍摄全景X线片，应用比例面积和垂直测量法确定下颌后部无牙区骨高度的变化。
12个月后，两组均报告有统计学上无显著意义的骨吸收量。
在本研究的局限性范围内，螺丝固位修复体和套筒冠覆盖义齿这两种治疗方案均可用于全口无牙患者的修复。必须对这些病例进行更长时间的随访，以便从长远角度对其疗效得出明确结论。
