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[Assessment of marginal tissue around HA-coated titanium implants for orthodontic anchorage in dogs].

12 two-stage HA-coated titanium implants placed in dogs' mandibles were loaded with an orthodontic force of 150 g for 3 month. Gingival bleeding index, plague and calcucus index, mobility index, probing depth and marginal bone were investigated. The results showed that the implants were stable and peri-implant soft tissue displayed slight inflammation, but no marginal bone absorption and no difference of bone quantity between the tension side and compression side were found. It can be concluded that the clinical trials of marginal tissue around the HA-coated titanium implants are satisfactory when the implants are used as anchorage for short-term orthodontic treatment.