Evidence map›Paper›PMID 34796619›Full record

ArticleClinical implant dentistry and related research2021

Survival rates of ultra-short (<6 mm) compared with short locking-taper implants supporting single crowns in posterior areas: A 5-year retrospective study.

Giorgio Lombardo, Annarita Signoriello, Mauro Marincola, Pietro Liboni, Estevam A Bonfante, Pier F Nocini

Open access · hybridAbstract read
In one paragraph

Article in Clinical implant dentistry and related research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
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  5. Article
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  7. Article
  8. [5.5 mm implant. A solution for severe atrophies without sacrificing predictability].Revista cientifica odontologica (Universidad Cientifica del Sur)
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 3 countries.

Giorgio LombardoDepartment of Surgery, Dentistry, Paediatrics and Gynaecology (DIPSCOMI), School of Dentistry, University of Verona, Verona, Italy.
Annarita SignorielloDepartment of Surgery, Dentistry, Paediatrics and Gynaecology (DIPSCOMI), School of Dentistry, University of Verona, Verona, Italy.ORCID https://orcid.org/0000-0002-9761-4046
Mauro MarincolaResearch Department, Dental Implant Unit, Faculty of Dentistry, University of Cartagena, Cartagena, Colombia.
Pietro LiboniDepartment of Surgery, Dentistry, Paediatrics and Gynaecology (DIPSCOMI), School of Dentistry, University of Verona, Verona, Italy.
Estevam A BonfanteDepartment of Prosthodontics and Periodontology, Bauru School of Dentistry, University of Sao Paulo, Bauru, Brazil.
Pier F NociniDepartment of Surgery, Dentistry, Paediatrics and Gynaecology (DIPSCOMI), School of Dentistry, University of Verona, Verona, Italy.
University of Verona · ITUniversidade de São Paulo · BRUniversity of Cartagena · CO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundShort and ultra-short implants represent a predictable treatment, in terms of implant survival, with patients presenting insufficient available bone volumes. Moreover, single crown restorations represent a gold standard in terms of oral hygiene. PURPOSE: The aim of this retrospective study was to evaluate implant survival, marginal bone loss, and peri-implant complications in 333 locking-taper short and ultra-short implants. MATERIALS AND

methodsImplants were placed in the maxillary and mandibular posterior regions of 142 patients. Clinical and radiographic examinations were performed at 5-year recall appointments.

resultsAll implants placed consisted of 8.0-, 6.0-, and 5.0-mm length, 38.14%, 34.53%, and 27.33%, respectively. Three hundred thirty-two implants (one early failure) were rehabilitated with single crowns in 141 patients. In 45.48% of the implants the crown-to-implant ratio was ≥2, with a mean value of 1.94. Overall implant-based survival after 5 years of follow-up was 96.10%: 96.85%, 95.65%, and 95.60% for 8.0-, 6.0-, and 5.0-mm length implants, respectively (p = 0.82). Overall patient-based survival was 91.55%. Regarding crestal bone level variations, average crestal bone loss and apical shift of the "first bone-to-implant contact point" position were 0.69 and 0.01 mm, respectively. Setting the threshold for excessive bone loss at 1 mm, during the time interval from loading to follow-up, 28 implants experienced loss of supporting bone greater than 1 mm: 19 of them (67.85%) were surgically treated with a codified surgical regenerative protocol. After 60 months, a peri-implantitis prevalence of 5.94% was reported, with an overall implant success of 94.06%: 95.93%, 92.73%, and 93.10% for 8.0-, 6.0-, and 5.0-mm length implants, respectively (p = 0.55).

conclusionLong-term outcomes suggest that short and ultra-short locking-taper implants can be successfully restored with single crowns in the posterior area of the maxilla and mandible.

Indexed as

Alveolar Bone LossDental ImplantsDental Restoration FailureCrownsDental Prosthesis DesignDental Prosthesis, Implant-SupportedFollow-Up StudiesHumansRetrospective StudiesTreatment OutcomeDental Implantsbone losscrown-to-implant ratioperi-implantitisshortsingle crownsuccesssurvivalultra-short

Identifiers

PMID34796619
PMCPMC9299664
OpenAlexW3214673304

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.