Hatzikyriakos A H, Reisis G I, Tsingos N
Department of Fixed Prosthesis, University of Thessaloniki, School of Dentistry, Greece.
J Prosthet Dent. 1992 Apr;67(4):454-8. doi: 10.1016/0022-3913(92)90072-i.
Fabrication of posts and cores for fixed partial denture (FPD) and removable partial denture (RPD) abutment restorations is common in dentistry. The biocompatibility of various post and core techniques with the restorations was clinically evaluated according to location and function. In this study, 154 post and core constructions for 150 patients were observed for a 3-year period to determine if the function of the original restorations remained unsatisfactory. The following techniques were included: (1) screw post and light-curing composite resins, (2) cemented post with parallel sides and light-curing composite resins, and (3) a cast and core technique. Seventeen of the 154 restorations failed; four failures were attributed to root fractures, three to radicular caries, and five to crown dislodgement, while five failures were from detachment of the post and core from the root. The statistical analysis revealed that only the factor "type of abutment" (RPDs and FPDs) had some effect on the failure of the restorations.
在牙科领域，制作用于固定局部义齿（FPD）和可摘局部义齿（RPD）基牙修复的桩核很常见。根据位置和功能，对各种桩核技术与修复体的生物相容性进行了临床评估。在本研究中，对150例患者的154个桩核结构进行了为期3年的观察，以确定原修复体的功能是否仍不理想。包括以下技术：（1）螺纹桩和光固化复合树脂；（2）平行边粘结桩和光固化复合树脂；（3）铸造桩核技术。154个修复体中有17个失败；4个失败归因于牙根骨折，3个归因于根面龋，5个归因于冠脱位，而5个失败是由于桩核与牙根分离。统计分析表明，只有“基牙类型”（RPD和FPD）这一因素对修复体失败有一定影响。
