Doctor Peng Dong, the expert of tooth implantation in Peking University International Hospital and president of Beijing Hedu Stomatological Clinic Co., Ltd
Conclusion: 2-3 years of tracking clinical cases showed that the effect of bone wrapping surrounding the C-tech implant was significant, with increased bone density, which presented its advantage in the esthetic of anterior teeth.
2-year tracking of the case of a single upper anterior tooth
Result 1:In 2-year continuous tracking after implantation, the bone height of the implant in the proximal-central area showed a progressive increase.
Result 2:In 2-year continuous tracking after implantation, the bone height of the implant in the distal-central area remained stable.
2-year tracking of the case of a single upper anterior tooth
Result 3: Comparing implant restoration completed within 6 months after implantation and the state 2 years after implantation, the bone densities of the implant in proximal-central and distal-central areas remained stable.
3-year tracking of the case of 2 upper anterior teeth
Result 1: In 3-year continuous tracking after implantation, the bone height between two implants showed a progressive increase.
Result 2: In 3-year continuous tracking after implantation, the bone heights of 2 implants in the distal-central area remained stable. 
3-year tracking of the case of 2 upper anterior teeth
Result 3: Comparing implant restoration completed within 6 months after implantation and the state 3 years after implantation, the bone density between the 2 implants increased significantly.
2-year tracking of the case of immediate implantation of anterior tooth
Result 1: In 2-year continuous tracking after implantation, the bone height between two implants showed a progressive increase.
Result 2: In 2-year continuous tracking after implantation, the bone heights of 2 implants in the distal-central area remained stable. 
2-year tracking of the case of immediate implantation of anterior tooth
Result 3: Comparing implant restoration completed within 6 months after implantation and the state 2 years after implantation, the bone density between 2 implants showed a slight increase.
