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RETRACTED: Marginal bone loss evaluation around immediate non‐occlusal microthreaded implants placed in fresh extraction sockets in the maxilla: a 3‐year study
Author(s) -
CalvoGuirado José L.,
GómezMoreno Gerardo,
AguilarSalvatierra Antonio,
Guardia Javier,
DelgadoRuiz Rafael A.,
Romanos Georgios E.
Publication year - 2015
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/clr.12336
Subject(s) - medicine , dentistry , implant , maxilla , bone resorption , radiography , alveolar crest , soft tissue , dental alveolus , resonance frequency analysis , orthodontics , osseointegration , surgery
Objective To evaluate marginal bone loss over 3 years around immediate microthreaded implants placed in the maxillary anterior/esthetic zone and immediately restored with single crowns. Material and methods Seventy‐one implants (with microthreads up to the platform – rough surface body and neck, internal connection and platform switching) were placed in fresh extraction sockets in the maxillary arches of 30 men and 23 women (mean age 37.85 ± 7.09 years, range 27–60). All subjects had at least 3 mm of soft tissue to allow the establishment of adequate biologic width and to reduce bone resorption. Each patient received a provisional restoration immediately after implant placement with slight occlusal contact. Mesial and distal bone height was evaluated using digital radiography on the day following implant placement (baseline) and after 1, 2, and 3 years. Primary stability was measured with resonance frequency analysis. Results No implants failed, resulting in a cumulative survival rate of 100% after 3 years. Marginal bone loss from implant collar to bone crest measured at baseline (peri‐implant bone defect at the fresh extraction socket) and after 3 years was 0.86 mm ± 0.29 mm. Mesial and distal site crestal bone loss ranged from 3.42 mm ± 1.2 mm at baseline to 3.51 mm ± 1.5 mm after 3 years ( P = 0.063) and from 3.38 mm ± 0.9 mm at baseline to 3.49 mm ± 0.9 mm after 3 years, respectively ( P = 0.086). Conclusions This prospective study found minimal marginal bone loss and a 100% implant survival rate over the 3‐year follow‐up for microthreaded immediate implants subjected to immediate non‐occlusal loading.