Cecconi Bert T, Koeppen Raymond G, Phoenix Rodney D, Cecconi Mark L
Dentistry International Inc, San Antonio, Texas 78229, USA.
J Prosthet Dent. 2002 Mar;87(3):277-80. doi: 10.1067/mpr.2002.122275.
Titanium is the most biocompatible metal available for dental castings. However, there is some concern about the castability of titanium used on a daily basis.
A radiographic evaluation of titanium partial denture frameworks was undertaken to ascertain whether these castings were technically acceptable for clinical use.
Three hundred Grade II titanium removable partial denture frameworks were cast in a Titec 205M casting machine. All materials were used as directed by the manufacturer, and all castings were made by an experienced titanium specialist. Each casting was evaluated by radiograph. Based on the number, location, and size of argon inclusions, the frameworks were rated as follows: technically acceptable for clinical use as cast; technically acceptable after laser welding modifications; or unacceptable as cast, with remake necessary.
Of the 300 titanium frameworks cast, 97% were rated technically acceptable for clinical use in terms of castability.
Within the limitations of this radiographic evaluation, it was determined that the castability of titanium was such that technically acceptable castings could be made on a daily basis.
钛是牙科铸造中生物相容性最佳的金属。然而，人们对日常使用的钛的铸造性能存在一些担忧。
对钛制局部义齿支架进行影像学评估，以确定这些铸件在技术上是否适合临床使用。
在一台Titec 205M铸造机中铸造了300个II级钛制可摘局部义齿支架。所有材料均按照制造商的指示使用，所有铸件均由一位经验丰富的钛专家制作。每个铸件都通过射线照相进行评估。根据氩气夹杂物的数量、位置和大小，将支架评为以下等级：铸造后在技术上适合临床使用；激光焊接修改后在技术上适合临床使用；铸造后不可接受，需要重新制作。
在铸造的300个钛支架中，97%在铸造性能方面被评为在技术上适合临床使用。
在本次影像学评估的局限性范围内，确定钛的铸造性能使得每天都能制作出技术上可接受的铸件。
