| Objective To compare and evaluate the clinical outcome of immediate implant therapy in patients with limited buccal bone wall dehiscence and in patients with intact buccal bone wall.Methods This prospective cohort study included patients intended to receive immediate implant treatment in upper anterior esthetic region from January,2018 to December,2018.Patients with buccal bone wall dehiscence limited to the coronal half were attributed to experimental group,whereas patients with intact buccal bone wall were attributed to control group.Implant survival rate,buccal bone wall resorption,pink/white esthetic score and post-op complications were recorded and evaluated.t-test was adopted to analyze the results.Results A total of 38 patients with a mean age of(39.2±5.8,range 19-45)years old and 38 upper anterior single tooth implants were included.Over the 12 months' observation after implant placement,the overall implant survival rate was 97.4%,with one implant lost in control group.Buccal bone resorption in thickness and height occurred in both groups within 6 months after implant placement.The buccal bone thickness decreases(mean±standard deviation)in experimental group were 1.32±0.74 mm,0.53±0.89 mm and 0.36±0.70 mm in coronal,meddle and apical part of implant in experimental,and 1.24±0.57 mm,0.83±0.46 mm and 0.38±0.72 mm in coronal,meddle and apical part of implant in control group.The buccal bone height decreases were 0.24±0.15 mm in experimental group and 0.25±0.23 mm in control group.There were no statistical differences between the corresponding spots in the two groups.The incidence of complications in both groups were not statistically different.Conclusions Clinical results of immediate implant to patients with buccal bone wall dehiscence limited to the coronal half were comparable to the results of patients with intact buccal bone wall. |
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