目的　探讨国产半精密按扣式 (根帽 )附着体在活动修复中的应用。方法　利用按扣式附着体对牙列缺损 (肯氏Ⅰ类、Ⅱ类、Ⅲ类 )及牙列缺失病例共 32例进行覆盖义齿修复 ,并对患者主观感觉和临床检查结果分析。结果　所有义齿固位稳定 ,咀嚼功能良好 ,X线显示牙周情况健康。结论　附着体的应用符合生物力学原则 ,可提高活动义齿修复效果 (固位、咀嚼、美观 ) ,其预后与义齿制作、防龋处理、口腔卫生有关。 Objective To explore the application of domestic semi-precision snap-on (root cap) attachment in the active repair. Methods Thirty-two cases of dentition defect (Kennedy Ⅰ, Ⅱ, Ⅲ) and dentition defect were repaired by means of snap-on attachment. The subjective feeling and clinical examination results were analyzed. Results All dentures retained stable, good chewing function, X-ray showed periodontal health. Conclusion The application of attachments accords with the principle of biomechanics, which can improve the effect of rehabilitating dentures (retention, chewing and aesthetics). The prognosis is related to denture making, caries prevention and oral hygiene.