How many methods the authors used in Clinical bonding to zirconia ceramic part?()
A.two
B. three
C.four
D.five
A.two
B. three
C.four
D.five
B.three
C.four
D.five
B.published clinical trials on bonded oxide ceramic restorations and correlate their results with that of laboratory bond strength testing use the same bonding methods as in the clinical trials.
C. 23 different surface treatments that had been tested still with a wide variation of specific conditions.
D. the vast amount of laboratory research it really is still a significant problem in dentistry to bond reliably to oxide ceramics such as alumina and zirconia ceramics.
A、problem
B、level
C、disparity
D、standard
A、③①②④
B、③④②①
C、④②①③
D、②①③④
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