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Sat, 14 October
9:45 AM EST (New York)

Definitive abutments placed at implant insertion and never removed: is it an effective approach? A systematic review and meta analysis of randomized controlled trials.

Speaker(s): Miss Martina Caneva

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Definitive abutments placed at implant insertion and never removed: is it an effective approach? A systematic review and meta analysis of randomized controlled trials.

Miss Martina Caneva

To assess whether repeated abutment dis/reconnections has any impact on peri-implant bone resorption and on soft-tissue healing.

To perform the systematic review and meta-analysis electronic and manual searches were conducted for English articles published up to March 2017. The aim was to identify whether there is a relationship between repeated disconnections of implant abutments (PA group) and prosthetic/implant failures, complications, marginal bone loss (MBL), soft tissue healing and esthetic evaluation (PES), after at least 1 year of function, compared to implants receiving a final abutment at the time of implant placement (DA group). Results: Fourteen articles (535 patients with 994 implants) were selected in the qualitative analysis.

Six of these were included in the metaanalysis. Five prosthesis failed in the PA group and one in the DA group (P=0.1047). Seven biologic complications were experienced in the PA group and six in the DA group (P=0.8121). MBL was statistically lower in the DA group (difference 0.279mm; P=0.000).

Higher buccal recession was experienced in the PA group (difference 0.198mm; P=0.0004). The PES evaluation showed no differences between groups (P=0.289). Conclusions: Repeated abutment dis/reconnections significantly increased MBL and buccal recession. Further studies are needed to confirm these results.


Release date: 14/10/2017
Expiration date: 14/10/2020

“Definitive abutments placed at implant insertion and never removed: is it an effective approach? A systematic review and meta analysis of randomized controlled trials.” is co-sponsored by Tribune Group GmbH. Tribune Group GmbH is a recognized ADA CERP and AGD PACE provider.

Speaker(s)

Miss Martina Caneva

  • Serrano Méndez CA, Lang NP, Caneva M, Ramírez Lemus G, Mora Solano G, Botticelli D. Comparison of allografts and xenografts used for alveolar ridge preservation. A clinical and histomorphometric RCT in humans. Clin Implant Dent Relat Res. 2017 May 2. doi: 10.1111/cid.12490. [Epub ahead of print] PubMed PMID: 28466494.
  • Caneva M, Botticelli D, Carneiro Martins EN, Caneva M, Lang NP, Xavier SP. Healing at the interface between recipient sites and autologous block bone grafts affixed by either position or lag screw methods: a histomorphometric study in rabbits. Clin Oral Implants Res. 2017 Apr 5. doi: 10.1111/clr.13016. [Epub ahead of print] PubMed PMID: 28382633.
  • Tallarico M, Canullo L, Caneva M, Özcan M. Microbial colonization at the implant-abutment interface and its possible influence on periimplantitis: A systematic review and meta-analysis. J Prosthodont Res. 2017 Mar 27. pii: S1883-1958(17)30017-8. doi: 10.1016/j.jpor.2017.03.001. [Epub ahead of print] Review. PubMed PMID: 28359872.
  • Canullo L, Caneva M, Tallarico M. Ten-year hard and soft tissue results of a pilot double-blinded randomized controlled trial on immediately loaded post-extractive implants using platform-switching concept. Clin Oral Implants Res. 2016 Aug 8. doi: 10.1111/clr.12940. [Epub ahead of print] PubMed PMID: 27502452.
  • Caneva M, Lang NP, Garcia Rangel IJ, Ferreira S, Caneva M, De Santis E, Botticelli D. Sinus mucosa elevation using Bio-Oss(®) or Gingistat(®) collagen sponge: an experimental study in rabbits. Clin Oral Implants Res. 2016 Apr 15. doi: 10.1111/clr.12850. [Epub ahead of print] PubMed PMID: 27080163.
  • Tallarico M, Meloni SM, Canullo L, Caneva M, Polizzi G. Five-Year Results of a Randomized Controlled Trial Comparing Patients Rehabilitated with Immediately Loaded Maxillary Cross-Arch Fixed Dental Prosthesis Supported by Four or Six Implants Placed Using Guided Surgery. Clin Implant Dent Relat Res. 2016 Oct;18(5):965-972. doi: 10.1111/cid.12380. Epub 2015 Oct 7. PubMed PMID: 26446912.
  • Szathvary I, Caneva M, Caneva M, Bressan E, Botticelli D, Meneghello R.A volumetric 3-D digital analysis of dimensional changes to the alveolar process at implants placed immediately into extraction sockets. Journal of Oral Science and Rehabilitation. 2015 Oct.
  • Caroprese M, Lang NP, Baffone G, Ricci S, Caneva M, Botticelli D. Histomorphometric analysis of bone healing at implants with turned or rough surfaces: An experimental study in the dog. Journal of Oral Science and Rehabilitation. 2017 Jan.

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