Methods 290 patients with dental or dentition defect diseases were treated with investment casting, manufactured 380 metal crowns and brackets. 40 of 380 are failure.

方法对290例牙体或牙列缺损患者进行熔模铸造，制作380件金属内冠和支架。

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As we discussed in Part 1, interest and dividends and other investment type income is not earned in the ordinary course of say, a dental practice.

FORBES: Overview Of The New 3.8% Investment Income Tax, Part 2: Passive Activities