Abstract
BackgroundThe outcome of one-stage trans-mucosal immediate implants with simultaneous guided bone regeneration (GBR) technique has become highly predictable. Furthermore, when this approach is performed to place one-stage implants into the inter-radicular septum of fresh extraction sockets in the molar region, the risk of incorrect emergence profile and off-angle loading is reduced. The aim of the present study was to clinically evaluate the horizontal hard and soft tissue changes, and radiographically the vertical socket walls remodeling, and the early peri-implant marginal bone loss (EMBL) following the placement of immediate one-stage implants in the inter-radicular septum of molar fresh extraction sockets, associated with a collagen membrane.Material and MethodsTwenty patients were selected to receive a one-stage implant with laser-microtextured collar surface into the inter-radicular septum of a fresh molar extraction sockets, associated with a simultaneous placement of a collagen membrane. Intraoral radiographs and model casts were used for the evaluation. Correlation between the amount of the keratinized tissue thickness (KTT) with EMBL was also analyzed.ResultsAfter 4 months, the vertical radiographic mesial and distal EMBL around implants was of 0.06 ±0.01 mm and 0.04±0.02 mm, respectively, with no statistically significant difference between T0 and T1 (P >0.05). No statistical differences were found also for each radiographic measure used for the examination of implant sites vertical bone changes (p >0.05). Clinically, horizontal changes of the bucco-lingual central width were found statistically significant (p<0.05), whereas no statistical differences were found for bucco-lingual mesial and distal width changes (p >0.05). In addition, no statistically significant correlation between EMBL and the amount of KTT was found (P >0.05).ConclusionsResults suggest that the immediate placement of one-stage laser-microtextured implants could provide advantages in preserving the extraction socket’s hard and soft tissue remodeling, and the peri-implant marginal bone level before the prosthetic loading. Key words:One-stage implant, laser-microtextured collar surface, GBR, collagen membrane.
Highlights
The need to reduce the number of surgical interventions and the implant treatment times, have led clinicians and researchers to develop a new dental implant placement protocol, defined with the term of “immediate implant placement” (IIP) [1]
A series of studies have suggested that high predictability of immediate implants with simultaneous guided bone regeneration (GBR) technique can be achieved with a one-step trans-mucosal-healing approach [4,5,6,7]
In other studies, where a GBR technique associated with the immediate implant placement was used, marginal defects around immediate implants in extraction molar sockets were found filled after 6 months of healing [17,18]
Summary
The need to reduce the number of surgical interventions and the implant treatment times, have led clinicians and researchers to develop a new dental implant placement protocol, defined with the term of “immediate implant placement” (IIP) [1]. The aim of the present study was to clinically evaluate the horizontal hard and soft tissue changes, and, radiographically, the vertical socket walls remodeling and the early peri-implant marginal bone loss (EMBL), following the placement of immediate one-stage implants with laser-microtextured collar surface in the inter-radicular septum of molar fresh extraction sockets, associated with a collagen membrane. The aim of the present study was to clinically evaluate the horizontal hard and soft tissue changes, and radiographically the vertical socket walls remodeling, and the early peri-implant marginal bone loss (EMBL) following the placement of immediate one-stage implants in the inter-radicular septum of molar fresh extraction sockets, associated with a collagen membrane. Conclusions: Results suggest that the immediate placement of one-stage laser-microtextured implants could provide advantages in preserving the extraction socket’s hard and soft tissue remodeling, and the peri-implant marginal bone level before the prosthetic loading
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