[使用Magfit磁性附着体测量下颌全口覆盖义齿的固位力]
[The measurement of retentive forces in mandibular complete overdenture with Magfit magnetic attachments].
作者信息
Du Li, Xu Chun, Chao Yonglie
机构信息
Department of Prosthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041, China.
出版信息
Hua Xi Kou Qiang Yi Xue Za Zhi. 2003 Oct;21(5):366-8.
OBJECTIVE
To evaluate the in vivo retentive forces of mandibular complete overdenture with Magfit attachments, as well as the relation between the location of magnetic attachments and the retentive forces of the denture.
METHODS
5 patients were selected and treated with mandibular complete overdentures retained by Magfit EX600 and MD800 attachments. A strainometer was used to measure the retentive forces in anterior, central and posterior parts of the overdenture before and after magnets were set. The vertical and anterior-upper 60 degrees retentive forces of the overdenture were measured one month later.
RESULTS
The retentive forces of the overdentures after setting magnets were significantly greater than that before magnets were set (P < 0.05). There was no significant difference in retentive forces between the different parts (P > 0.05). The retentive force in vertical direction was greater than that in anterior-upper 60 degrees direction (P < 0.025).
CONCLUSION
Magnetic attachments can significantly improve the retention of mandibular complete overdenture. The location of magnetic attachments greatly influences the retentive force of the overdenture.
目的
评估采用Magfit附着体的下颌全口覆盖义齿的体内固位力，以及磁性附着体的位置与义齿固位力之间的关系。
方法
选取5例患者，采用Magfit EX600和MD800附着体进行下颌全口覆盖义齿修复。在安装磁体前后，使用应变仪测量覆盖义齿前部、中部和后部的固位力。1个月后测量覆盖义齿的垂直向和前上60度方向的固位力。
结果
安装磁体后的覆盖义齿固位力显著大于安装磁体前（P < 0.05）。不同部位的固位力无显著差异（P > 0.05）。垂直方向的固位力大于前上60度方向的固位力（P < 0.025）。
结论
磁性附着体可显著提高下颌全口覆盖义齿的固位。磁性附着体的位置对覆盖义齿的固位力有很大影响。
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