Aroso Carlos, Silva Antonio Sergio, Ustrell Raul, Mendes Jose Manuel, Braga Ana Cristina, Berastegui Esther, Escuin Tomas
Department of Oral Rehabilitation, Instituto Universitario de Ciencias da Saude (IUCS), Portugal.
Industrial Engineer, Chairman of Idearum, Enginyeria i Innovació de Producte, Igualada, Barcelona, Spain.
J Adv Prosthodont. 2016 Feb;8(1):21-9. doi: 10.4047/jap.2016.8.1.21. Epub 2016 Feb 23.
This in vitro study investigated and compared the durability and retention of three types of attachments.
Three commercially available attachments were investigated: Clix®, Dalbo-Plus® and Locator®. In total, 72 samples of these attachments were placed in the acrylic resin forms and subjected to mechanical testing (5400 cycles of insertion and removal) over the respective ball or Locator abutments immersed in artificial saliva at pH 7 and 37℃. The abutments were placed at angulations of 0°, 10° and 20°. The retention force was recorded at the beginning and after 540, 1080, 2160, 3240, 4320 and 5400 insertion-removal cycles.
The results revealed that there were significant differences in the average values of the insertion/removal force due to angulation (F (2.48) = 343619, P<.05) and the type of attachment (F (7.48) = 23.220, P<.05).
Greater angulation of the abutments was found to influence the retention capacity of the attachments, and the fatigue test simulating 5 years of denture insertion and removal did not produce wear in the metal abutments.
本体外研究调查并比较了三种类型附着体的耐用性和固位力。
研究了三种市售附着体：Clix®、Dalbo-Plus®和Locator®。总共将72个这些附着体样本置于丙烯酸树脂模型中，并在pH值为7且温度为37℃的人工唾液中，对浸于其中的相应球帽或Locator基台上进行机械测试（5400次插入和取出循环）。基台的角度设置为0°、10°和20°。在开始时以及540、1080、2160、3240、4320和5400次插入-取出循环后记录固位力。
结果显示，由于角度（F(2.48)=343619，P<.05）和附着体类型（F(7.48)=23.220，P<.05），插入/取出力的平均值存在显著差异。
发现基台角度越大，对附着体的固位能力影响越大，模拟义齿插入和取出5年的疲劳测试未导致金属基台磨损。
