Abstract
BackgroundThe healing of xenograft augmentated intra-alveolar gaps following immediate implant placement (IMIP) after tooth extraction is likely to differ in time and density compared to the native bone part that directly contacts the implant.Material and MethodsSecondary implant stability (SIS) data recorded 2-3 months following a late implant placement protocol (LIP) (n= 43) and 6-8 months following an immediate implant placement protocol (IMIP) (n=33) of variable-thread implants (Nobel Active™) in the maxilla were retrospectively collected from files of 63 patients (42 females, 21 males). Statistical analysis was performed using a generalized estimating equation model (GEE). Data split-up according to implant diameter (RP, Ø= 4.3mm) , narrow platform (NP, Ø= 3.5mm) was adopted.ResultsFor NP implants, the mean ISQ (±SD) values were 70.84 (±4.86) in LIP group and 72.41 (±3.89) in the IMIP group. For RP implants, mean ISQ (±SD) values were 73.45 (±8.77) in the LIP group and 75.93 (±5.73) in the IMIP group. Significant effect of treatment modus in favour of the IMIP and gender in favour of males and implant position was noted (p<0.05).ConclusionsSIS following a IMIP protocol after 6-8 months is comparable to LIP protocol after 2-3 months. A minor ISQ outcome difference in favour of the IMIP protocol can be attributed to a difference in hard tissue alteration during healing of the xenograft part. Key words:Secondary implant stability, RFA, Osstell Mentor, variable thread implants, Nobel Active, Bio-Oss, immediate implant placement, late implant placement, non-submerged healing, gap.
Highlights
The time-framing classification of implant placement after tooth extraction as proposed by Hämmerle et al [1,2], defines an immediate implacement protocol (IMIP) after extraction as a type 1 procedure, whereas a late implant placement protocol (LIP) after at least 16 weeks following extraction as a type 4 procedure
One of the particular aspects following the insertion of an implant in a fresh extraction alveolus, is the presence of a ‘peri-implant’ gap situated between a part of the inserted implant outer surface, mostly buccally, and the inner lining of the fresh extraction alveolus
Within the limits of this study, it appears that the resonance frequency analysis (RFA) based secondary implant outcome of immediate placed single, unsplinted, variable-thread implants in the maxilla with subsequent gap augmentation and instant non-occlusal provisionalization, is comparable with those of similar implants placed according to a late implant placement protocol without instant provisionalization
Summary
The time-framing classification of implant placement after tooth extraction as proposed by Hämmerle et al [1,2], defines an immediate implacement protocol (IMIP) after extraction as a type 1 procedure, whereas a late implant placement protocol (LIP) after at least 16 weeks following extraction as a type 4 procedure. A minimal flap elevation approach, alternative to the above described ones, was decribed by Derouck et al in patients exhibiting a normal or thick gingival biotype [9] In their approach, buccally located marginal gaps after immediate implant placement were augmented with Bio-oss insertion between the residual socket wall and the implant without adjunctive placement of a membrane. The healing of xenograft augmentated intra-alveolar gaps following immediate implant placement (IMIP) after tooth extraction is likely to differ in time and density compared to the native bone part that directly contacts the implant. A minor ISQ outcome difference in favour of the IMIP protocol can be attributed to a difference in hard tissue alteration during healing of the xenograft part
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
