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Abstract
Background: Although immediate implant placement is a predictable procedure, buccal bone resorption and midfacial mucosal recession are common complications. Several surgical procedures have been introduced in attempt to prevent these complications. Materials and methods: 42 patients with single non-restorable tooth in the esthetic zone replaced with an immediate implant. Patients were randomly assigned to SST (n=21) and grafting the buccal gap with xenograft (n=21). The esthetic outcomes were evaluated by assessing the pink esthetic score (PES) and the amount of midfacial mucosal recession.The vertical and the horizontal buccal bone resorption were also measured in addition to patient satisfaction assessment through a VAS based questionnaire. Results: All implants were clinical successful. The results of the present study showed that the socket shield technique yielded significantly less vertical and horizontal buccal bone resorption of 0.35 ± 0.62 mm and 0.29 ± 0.34mm (9.59%) respectively compared to the filling the buccal gap with xenograft which yielded vertical and horizontal buccal bone resorption of 1.72 ± 1.02 mm and 1.45 ± 0.72 mm (46.24%) respectively. Also, there was significantly greater midfacial mucosal recession in the xenograft group of 0.466 ± 0.58 mm compared to midfacial mucosal coronal migration of 0.45 ± 0.75 mm in the socket shield group. However, there was no significant difference regarding the total PES with median of 12 in both treatment groups. Similarly, patients were highly satisfied in terms of function and esthetics with no significant difference between both treatment approaches