West China Journal of Stomatology ›› 2023, Vol. 41 ›› Issue (3): 341-349.doi: 10.7518/hxkq.2023.2022439

• Implantology • Previous Articles     Next Articles

Clinical efficacy of simple taper retentive implants in immediate posterior dental implantation for 5-7 years

Ren Bihui(), Guo Shuigen, Xu Yehao, Dai Jieting, Wei Hongwu.()   

  1. Dept. of Stomatology, The Fourth Affiliated Hospital of Nanchang University, Nanchang 330009, China
  • Received:2022-11-01 Revised:2023-04-21 Online:2023-06-01 Published:2023-06-02
  • Contact: Wei Hongwu. E-mail:1282127248@qq.com;nc.whw@163.com


Objective This study aimed to evaluate the long-term clinical efficacy of simple taper retentive implants in the posterior dental area after immediate implantation for 5-7 years. Methods Selected from January 2015 to December 2017 in the Fourth Affiliated Hospital of Nanchang University dental clinic line tooth area immediately after the implant prosthesis, a total of 38 patients, 53 implants, were deep into (bone under 2 mm or higher) and the upper structure was repaired. In addition, after the completion of tracking observation of 60-90 months, the implant surrounding bone health was recorded and analyzed. Results After 5-7 years of follow-up, 1 of the 53 implants failed to fall out, and the implant retention rate was 98.1%. The amount of bone resorption in the proximal and distal margins 5-7 years after implant restoration was (0.16±0.94) mm and (-0.01±1.29) mm, respectively, and the difference in bone height between the proximal and distal margins of the implant and the immediate post-restoration period was not statistically significant (P>0.05). No statistically significant differences were found in the effects of periodontitis, implant site inflammation, and smoking on peri-implant marginal bone resorption (P>0.05). Conclusion The single taper-retained implant broadens the indications for immediate implant placement in the posterior region, and its deep sub-osseous placement (≥2 mm below the bone) avoids to a certain extent the disturbance of the implant by external stimuli and the exposure of the cervical abutment of the implant, with the good long-term stability of the marginal bone around the implant.

Key words: simple taper fixation, posterior dental area, immediate implant placement, bone resorption

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