Evidence map›Paper›PMID 36122912›Full record

Trial reportJournal of clinical periodontology2023

Maxillary overdentures supported by four or six implants in the anterior region: 10-year randomized controlled trial results.

Wim Slot, Gerry M Raghoebar, Marco S Cune, Arjan Vissink, Henny J A Meijer

Registry-linked trialOpen access · hybridAbstract readRandomized Controlled Trial
PubMed Full text at PMC Publisher
In one paragraph

Trial report in Journal of clinical periodontology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07439237 (Implant-supported Maxillary Overdentures; a 15-years Evaluation), which is not on this map. Cited by 16 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 4 pooled it
3.6field-weighted citation impact, top 7% 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.

NCT07439237 not yet recruitingnot on this mapstarted 2026, after this paper: background citation

Implant-supported Maxillary Overdentures; a 15-years Evaluation

Typeobservational_patient_registrySponsorUniversity Medical Center GroningenRan2026 to 2026Enrolled116ConditionsEdentulous Maxilla, Atrophic, Implants, Dental, OverdentureArmsMaxillary overdenture supported by dental implants
3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 4 syntheses or guidelines pooled it, 20 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

Wim SlotDental School, Department of Implant Dentistry, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.ORCID 0000-0001-8318-4113
Gerry M RaghoebarDepartment of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.ORCID 0000-0003-3578-7141
Marco S CuneDental School, Department of Restorative Dentistry and Biomaterials, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Arjan VissinkDepartment of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Henny J A MeijerDental School, Department of Implant Dentistry, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.ORCID 0000-0003-1702-6031
University Medical Center Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo evaluate bar-supported maxillary implant overdenture treatment when supported by either four or six implants after 10 years. MATERIALS AND

methodsEdentulous subjects with maxillary denture complaints and ample bone volume to facilitate implants in the anterior region of the maxilla were planned for implant overdenture treatment, randomized to receive either four implants (n = 25) or six implants (n = 25) and subsequently evaluated after 10 years of function. Outcome variables included peri-implant bone-level changes, implant and overdenture survival, complications, presence of plaque, calculus and bleeding, degree of peri-implant inflammation, probing depth and patient satisfaction. Differences between the groups and between evaluation periods were tested with a Student's t-test.

resultsFourteen patients with totally 72 implants were lost to follow-up. Two patients from the six-implant group experienced implant loss (four implants), resulting in 96.1% implant survival in this group versus 100% survival in the four-implant group. Clinical, radiographical and patient-reported outcome measures did not differ statistically significant between the two groups. Patients from both groups were generally quite satisfied with the result after 10 years.

conclusionsSimilar and favourable outcomes are seen in bar-supported maxillary overdentures on either four or six anteriorly placed implants after a 10-year evaluation period.

Indexed as

Dental ImplantsJaw, EdentulousDental Prosthesis, Implant-SupportedDenture, OverlayDenture RetentionHumansMaxillaPatient SatisfactionTreatment OutcomeDental Implantsdental implantsedentulousmaxillaoverdenturerandomized controlled clinical trial

Identifiers

PMID36122912
PMCPMC10091759
OpenAlexW4296522814

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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.