Evidence map›Paper›PMID 40344630›Full record

Trial reportClinical implant dentistry and related research2025

Two- Versus Four-Narrow-Implant-Retained Dentures With Immediate-Loaded Anterior Implants: 9 Years Randomized Clinical Trial.

Jana Kostunov, Nikolaos Nikitas Giannakopoulos, Peter Rammelsberg, Stefanie Kappel

Abstract readRandomized Controlled TrialComparative Study
In one paragraph

Trial report in Clinical implant dentistry and related research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Article
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

4 authors.

Jana KostunovDepartment of Prosthodontics, University of Heidelberg, Heidelberg, Germany.ORCID https://orcid.org/0000-0001-8254-7138
Nikolaos Nikitas GiannakopoulosDepartment of Prosthodontics, University of Würzburg, Würzburg, Germany.
Peter RammelsbergDepartment of Prosthodontics, University of Heidelberg, Heidelberg, Germany.
Stefanie KappelDepartment of Prosthodontics, University of Heidelberg, Heidelberg, Germany.ORCID https://orcid.org/0000-0003-3660-153X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionIn many clinical cases, anatomical conditions such as an atrophied alveolar ridge do not allow insertion of normal diameter implants. At this point, narrow dental implants may provide an effective option to avoid complex surgical treatments. The aim of this trial was to evaluate long-term survival, prosthetic and biological complications, and OHRQoL for two-piece narrow dental implants supporting overdentures with Locator-attachments.

methodsTwenty-five patients with edentulous mandibles received four narrow dental implants and retained dentures with Locator attachments. Following successful implantation, immediate loading of anterior implants with Locator attachments was performed, while posterior implants underwent a conventional healing procedure. Follow-up examinations included documentation of implant and denture-related complications, modified gingiva index, modified plaque index, OHIP-G, and radiographic measurements of bone loss.

resultsUp to 9 years after restoration, 18 patients with 72 implants were available for the follow-up. During the observation period, one implant was lost in the immediate loading group. Implant survival was 98% and 100%. The outcomes of mPI and mGI for the 18 patients hardly differed between the groups. During the observation period, 136 prosthetic complications occurred. Scores for the different OHIP-G domains at the last follow-ups were stable over the years.

conclusionsThroughout an extended period of observation, we found stable implant survival rates, good maintenance of oral hygiene, and manageable prosthetic complications. The OHRQoL was satisfying over the years, suggesting that this treatment option could be favorable for older individuals.

trial registrationhttps://drks.de/search/en/trial/DRKS00005497.

Indexed as

Dental ImplantsDental Prosthesis, Implant-SupportedDenture, OverlayDenture RetentionImmediate Dental Implant LoadingAgedDental Prosthesis DesignFemaleHumansJaw, EdentulousMaleMandibleMiddle AgedQuality of LifeDental Implantsdental implantsedentulous mandibleimmediate loadingimplant‐supported denturelate loadingLocator attachmentssurvival

Identifiers

PMID40344630
PMCPMC12063560

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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.