by Doctor Peng Dong, the expert of tooth implantation in Peking University International Hospital and president of Beijing Hedu Stomatological Clinic Co., Ltd
Conclusion: 3-5 years of clinical tracking showed that in the cases of implantation in the mandibular posterior area, the bone height and bone density surrounding the C-tech implant were increased significantly, with a significant effect of bone wrapping, which fully presented the advanced design and precise processing of the implant.
5-year tracking of the case of single mandibular posterior tooth
Result 1: 1 year after implantation, the bone height of the implant in the proximal-central area was increased significantly and remained stable within 1-5 years.
Result 2: In 5-year continuous tracking after implantation, the bone height of the implant in the distal-central area showed a progressive increase. 
5-year tracking of the case of single mandibular posterior tooth
Result 3: Comparing implant restoration completed within 3 months after implantation and the state 5 years after implantation, the bone mineral densities of the implant in the proximal-central and distal-central areas were increased significantly. 
4-year tracking of the case of single mandibular posterior tooth
Result 1: In 4-year continuous tracking after implantation, the bone height of the implant in the proximal-central area remained stable.
Result 2: In 4-year continuous tracking after implantation, the bone height of the implant in the distal-central area showed a significant increase year by year.
4-year tracking of the case of single mandibular posterior tooth
Result 3: Comparing implant restoration completed within 3 months after implantation and the state 4 years after implantation, the bone mineral density of implant in the distal-central area was increased significantly.
3.5-year tracking of the case of single mandibular posterior tooth
Result 1: In 3.5-year continuous tracking after implantation, the bone height of the implant in the proximal-central area remained stable.
Result 2: In 3.5-year continuous tracking after implantation, the bone height of the implant in the distal-central area showed a significant increase year by year.
3.5-year tracking of the case
Result 3: Comparing implant restoration completed within 5 months after implantation and the state 3.5 years after implantation, the bone mineral densities of the implant in the proximal-central and distal-central areas were increased significantly. of single mandibular posterior tooth
3-year tracking of the case of two mandibular posterior teeth
Result 1: In 3-year continuous tracking after implantation, the bone height between two implants remained stable, and complete bone wrapping was realized surrounding the sloping shoulder of the implant.
3-year tracking of the case of two mandibular posterior teeth
Result 2: Comparing implant restoration completed within 3 months after implantation and the state 3 years after implantation, the bone mineral density between two implants was increased significantly.
