wrap-around那題似乎怪怪的...找了一下...
Rf:石教官-adhesive bridge
[Wrap-around design]
The alloy framework should be extended to engage the tooth structure at 180
or more of its circumference when viewed from the occlusal.
Then the etched casting bonds to differently directed enamel rods and
provides mechanical resistence to lateral forces.
wrap-around就是圍繞的意思
金屬應該圍繞180度或是更大的角度,以提供更大的resistence來抵抗外力
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答案應該是這樣寫(吧)
有疑問再討論吧
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