Department of Periodontics, Chang Gung Memorial Hospital at Taipei, Taipei, Taiwan.
Department of Periodontics, Chang Gung Memorial Hospital at Taipei, Taipei, Taiwan; Graduate Institute of Dental and Craniofacial Science, Chang Gung University, Taoyuan, Taiwan; Department of Nutrition, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan.
Biomed J. 2021 Oct;44(5):627-635. doi: 10.1016/j.bj.2020.05.011. Epub 2020 May 26.
Transcrestal sinus floor elevation is a reliable procedure when additional bone height is needed for maxillary implant placement. However, the grafted bone undergoes remodeling and the dimensional stability of grafted bone height may be affected by several clinical factors, including graft material, sinus anatomy and the morphology of grafted space.
This retrospective study examined patients who had undergone transcrestal sinus floor elevation with synthetic biphasic calcium phosphate and single implant placement. The reduction of sinus graft height (GHR) after 6-8 months healing period was measured with cone-beam computed tomography (CBCT) images. Correlating factors, including vertical amount of implant protrusion (IP), sinus width, and the morphology of grafted space were analyzed by Spearman's correlation test.
A total of 25 implant sites were analyzed. The mean GHR was 0.57 ± 0.49 mm, which was positively correlated with IP, vertical elevation height (VEH), and the ratio of vertical to horizontal elevation of the grafted space. However, GHR was not correlated with sinus width and mesial-distal or buccal-palatal width of the grafted space.
Synthetic biphasic calcium phosphate used in transcrestal sinus floor elevation underwent shrinkages and graft remodeling. Grafted height reduction was associated with IP, VEH, and the ratio of vertical to horizontal elevation of the grafted space.
在需要上颌种植体植入时增加额外的骨高度时，经牙槽嵴窦底提升是一种可靠的方法。然而，移植的骨会经历重塑，并且移植骨高度的尺寸稳定性可能会受到几个临床因素的影响，包括移植物材料、窦解剖结构和移植空间的形态。
本回顾性研究检查了接受经牙槽嵴窦底提升并用合成双相磷酸钙和单个植入物进行治疗的患者。使用锥形束计算机断层扫描 (CBCT) 图像测量 6-8 个月愈合期后窦内移植物高度的减少（GHR）。通过 Spearman 相关检验分析相关因素，包括植入物突出量（IP）、窦宽度和移植空间的形态。
共分析了 25 个种植部位。平均 GHR 为 0.57±0.49mm，与 IP、垂直提升高度（VEH）和移植空间垂直与水平提升的比例呈正相关。然而，GHR与窦宽度以及移植空间的近远中或颊舌宽度无关。
经牙槽嵴窦底提升中使用的合成双相磷酸钙经历了收缩和移植物重塑。移植高度的降低与 IP、VEH 和移植空间垂直与水平提升的比例有关。
