Evidence map›Paper›PMID 33706748›Full record

ArticleBMC oral health2021

Microbiological findings in early and late implant loss: an observational clinical case-controlled study.

Michael Korsch, Silke-Mareike Marten, Dominic Stoll, Christopher Prechtl, Andreas Dötsch

Registry-linked trialAbstract read
In one paragraph

Article in BMC oral health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05900297 (Antibiotic Regimen for Patients Seeking Dental Implants Procedures), which is not on this map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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.

NCT05900297 unknown statusnot on this mapstarted 2023, after this paper: background citation

Antibiotic Regimen for Patients Seeking Dental Implants Procedures

TypeobservationalSponsorAssiut UniversityRan2023 to 2024Enrolled100ConditionsDental Implant Infection
3 · Its place in the literature

Who cites it

23 citing papers in PubMed.

  1. Aetiology of early implant failure: a scoping review.Clinical oral investigations · 2026
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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.

Michael KorschDental Academy for Continuing Professional Development, Karlsruhe, Lorenzstrasse 7, 76135, Karlsruhe, Germany. michael_korsch@za-karlsruhe.de.ORCID http://orcid.org/0000-0001-8841-2744
Silke-Mareike MartenInstitute of Functional Interfaces, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.
Dominic StollDepartment of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut, Karlsruhe, Germany.
Christopher PrechtlDental Academy for Continuing Professional Development, Karlsruhe, Lorenzstrasse 7, 76135, Karlsruhe, Germany.
Andreas DötschInstitute of Functional Interfaces, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundImplants are a predictable and well-established treatment method in dentistry. Nevertheless, looking at possible failures of dental implants, early and late loss have to be distinguished. The intent of the study was to report microbiological findings on the surface of implants with severe peri-implantitis, which had to be explanted.

methods53 specimens of implants from 48 patients without severe general illnesses have been examined. The groups investigated were implants that had to be removed in the period of osseointegration (early loss, 13 patients with 14 implants) or after the healing period (late loss, 14 patients with 17 implants). The implant losses were compared with two control groups (implants with no bone loss directly after completed osseointegration, two to four months after implant placement (17 patients with 17 implants) and implants with no bone loss and prosthetic restoration for more than three years (5 patients with 5 implants)). Data about the bacteria located in the peri-implant sulcus was collected using amplification and high throughput sequencing of the 16S rRNA gene.

resultsThe biofilm composition differed substantially between individuals. Both in early and late implant loss, Fusobacterium nucleatum and Porphyromonas gingivalis were found to be abundant. Late lost implants showed higher bacterial diversity and in addition higher abundances of Treponema, Fretibacterium, Pseudoramibacter and Desulfobulbus, while microbial communities of early loss implants were very heterogeneous and showed no significantly more abundant bacterial taxa.

conclusionsSpecific peri-implant pathogens were found around implants that were lost after a primarily uneventful osseointegration. P. gingivalis and F. nucleatum frequently colonized the implant in early and late losses and could therefore be characteristic for implant loss in general. In general, early lost implants showed also lower microbial diversity than late losses. However, the microbial results were not indicative of the causes of early and late losses.

Indexed as

Alveolar Bone LossDental ImplantsPeri-ImplantitisHumansOsseointegrationPorphyromonas gingivalisRNA, Ribosomal, 16SDental ImplantsRNA, Ribosomal, 16S16 s rRNABacteriaDental implantEarly implant lossLate implant loss lossMicrobial biofilmPeri-implantitis

Identifiers

PMID33706748
PMCPMC7948356

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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.