Conclusion the stud type attachments have practically value in clinical appliance and the same capabilities compared with congeneric import production.
结论自行研制的球帽型附着体具有临床实用价值，达到了进口同类产品的性能。
Conclusions: Combined design of stud type attachments and extracoronal attachments had practically value in clinical appliance.
结论：球帽型附着体与冠外附着体的联合设计形式具有临床实用价值。
Objective: To discuss the usage of stud-nap attachments and magnetic attachments in complete overdentures.
目的：利用按扣式附着体、磁性附着体的不同优点，改善全口覆盖义齿固位。
Objective Using stud type attachments on the natural root in order to get retention for overdentures.
目的利用天然牙的牙根放置自行研制的球帽型附着体，增强覆盖义齿的固位力。
Objective Using stud type attachments on the natural root in order to get retention for overdentures.
目的利用天然牙的牙根放置自行研制的球帽型附着体，增强覆盖义齿的固位力。
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