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- Title
Immediate Single-Tooth Implant Placement in Bony Defects in the Esthetic Zone: A 1-Year Randomized Controlled Trial.
- Authors
Slagter, Kirsten W.; Meijer, Henny J.A.; Bakker, Nicolaas A.; Vissink, Arjan; Raghoebar, Gerry M.
- Abstract
<bold>Background: </bold>This study aims to assess, with regard to marginal bone level (MBL), whether the outcome of immediate implant placement in bony defects in the esthetic zone was non-inferior to delayed implant placement after 1 year.<bold>Methods: </bold>Forty patients with a failing tooth in the esthetic zone and a labial bony defect of ≥5 mm after removal of a tooth were randomly assigned for immediate (n = 20) or delayed (n = 20) implant placement. Second-stage surgery and provisionalization occurred after 3 months of healing. Follow-up was at 1 month and 1 year after definitive crown placement. The study was powered to detect a difference in MBL of >0.9 mm. Buccal bone thickness, soft tissue peri-implant parameters, esthetic indices, and patient satisfaction were also assessed.<bold>Results: </bold>One year after definitive crown placement, MBL loss was 0.56 ± 0.39 mm mesially and 0.74 ± 0.51 mm distally for the immediate placement group and 0.51 ± 0.43 mesially and 0.54 ± 0.45 distally mm for the delayed placement group, respectively (not significant). Regarding differences in means, non-inferiority was observed after 1 year (difference in mean for immediate versus delayed: mesially 0.04 mm [95% confidence interval (CI) = -0.22 to 0.30 mm, P = 0.40]; distally 0.21 mm [95% CI = -0.10 to 0.51 mm, P = 0.58]). No significant differences in the other outcome variables were observed.<bold>Conclusions: </bold>Immediate implant placement with delayed provisionalization was non-inferior to delayed implant placement with delayed provisionalization in labial bony defects of ≥5 mm regarding change in MBL. Although not powered for other outcome variables, no clinically relevant differences were observed in these variables.
- Subjects
IMMEDIATE loading (Dentistry); TRAUMATIC bone defects; RANDOMIZED controlled trials; DENTAL implants; COSMETIC dentistry; DENTAL crowns; PATIENT satisfaction; COMPARATIVE studies; LONGITUDINAL method; MAXILLA; RESEARCH methodology; MEDICAL cooperation; RESEARCH; EVALUATION research; TREATMENT effectiveness
- Publication
Journal of Periodontology, 2016, Vol 87, Issue 6, p619
- ISSN
0022-3492
- Publication type
journal article
- DOI
10.1902/jop.2016.150417