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Abstract :
[en] Objectives: The aim of this study was to evaluate the clinical and histological outcomes of implant placed after socket preservation procedures in the esthetic zone. Implant survival rate and biological complications were recorded during a follow-up period of 1 year.
Materials and methods: A series of 12 patients needing the replacement of a single tooth in the esthetic zone were included in the present study. The hopeless teeth were extracted atraumatically, the sockets were filled with bovine hydroxyapatite (0.25-1mm particles) and the sites were covered with a saddled connective tissue graft. After a healing period of 3 months, biopsies were retrieved in the socket preservation sites and implants were placed. The patients were followed for a period of 1 year.
Results: The etiologies of tooth loss were : endodontic (9), caries (1), periodontal (1), and traumatic (1). A total of 12 implants (10 incisors, 2 premolars) were placed on 12 patients (6 men / 6 women) aged from 24 to 61 (42,3 – 11,91). All implant reached an adequate primary stability (> 20N/cm2). 7 out of 12 implants were immediately restored with a temporary crown, and the définitive restorations were successfully placed in all cases. After a follow-up period of 1 year, all implants fulfilled strict success criteria for dental implants with regard to osteointegration, including the absence of peri-implant radiolucency, implant mobility, suppuration, and pain and no further complications occurred.
Out of 12 sites only 7 biopsies were retrieved for histological analyses. New bone was found in the apical third of the socket in every specimen, in the mid-third in only 3 specimen and no bone was found in any of the spécimen in the more cervical third of the socket.
Conclusion: The results from this prospective case series suggest that early implant placement in extraction socket site seems to display good clinical outcomes despite the incomplete bone regeneration in the socket at 3 months.
