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Implants placed in fresh extraction sockets in the maxilla: clinical and radiographic outcomes from a 3-year follow-up examination

Artikel i vetenskaplig tidskrift
Författare M. Sanz
D. Cecchinato
J. Ferrus
G. E. Salvi
C. Ramseier
N. P. Lang
Jan Lindhe
Publicerad i Clinical Oral Implants Research
Volym 25
Nummer/häfte 3
Sidor 321-327
ISSN 0905-7161
Publiceringsår 2014
Publicerad vid Institutionen för odontologi
Sidor 321-327
Språk en
Länkar dx.doi.org/10.1111/clr.12140
Ämnesord clinical and radiologic outcomes, dental implants, immediate placement, implants geometry, anterior single implants, tooth dental implants, immediate implant, tissue alterations, bone, provisionalization, replacement, adjacent, cohort
Ämneskategorier Odontologi


AimThe aim of this prospective, randomized, controlled multicenter study was to determine the 3-year efficacy and stability of the soft and hard tissues at implants with a different geometry that were placed in fresh extraction sockets. Material and methodsImplants with two different configurations, cylindrical (Group A) or conical/cylindrical (Group B) were installed, and healing abutments were attached. Sixteen weeks after implant placement, subjects returned for a re-entry procedure. Prosthetic restorations were delivered 22weeks after implant placement. Each subject was placed in a 3-year follow-up program, including examinations at yearly visits including various soft tissue and bone level parameters. ResultsThe percentage of sites that were considered inflamed during the follow-up period was stable and varied between 8.8% and 10.2%. The radiographic examinations documented improved bone levels at the final examination and the mean improvement from baseline (placement of permanent restoration; PR) amounted to 0.170.67mm. More than 70% (54 of 76) of the implants monitored in this study suffered no bone loss during the maintenance period. Moreover, there was an obvious gain of interproximal soft tissue volume and at the 3-year examination around 25% of all embrasure gaps were completely filled with papillae. ConclusionsBoth conical/cylindrical and cylindrical implants placed in fresh extraction sockets allowed proper soft and hard tissue healing to occur. At both types of implants, mucosal inflammation was infrequent, marginal bone levels were maintained, and soft tissue volume increased gradually after the placement of the permanent restoration.

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