Evidence map›Paper›PMID 40452327›Full record

ArticleJournal of clinical periodontology2025

Long-Term Prognosis of Teeth With Class II Furcation Involvement: A Retrospective Cohort Study.

P Eickholz, T Cordis, B Dannewitz, B Pretzl, M Schröder, N Lingwal, N El Sayed

Abstract read
In one paragraph

Article in Journal of clinical periodontology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

5 citing papers in PubMed.

  1. [Effect of concentrated growth factors in guided tissue regeneration for the treatment of mandibular molar furcation lesions].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2026
    Trial
  2. Review
  3. Article
  4. Article
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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

7 authors.

P EickholzDepartment of Periodontology, Center for Dentistry and Oral Medicine (Carolinum), Goethe-University Frankfurt am Main, Frankfurt am Main, Germany.ORCID 0000-0002-1655-8055
T CordisDepartment of Periodontology, Center for Dentistry and Oral Medicine (Carolinum), Goethe-University Frankfurt am Main, Frankfurt am Main, Germany.
B DannewitzDepartment of Periodontology, Center for Dentistry and Oral Medicine (Carolinum), Goethe-University Frankfurt am Main, Frankfurt am Main, Germany.ORCID 0000-0002-1054-0479
B PretzlDepartment of Periodontology, Center for Dentistry and Oral Medicine (Carolinum), Goethe-University Frankfurt am Main, Frankfurt am Main, Germany.ORCID 0000-0003-4230-593X
M SchröderDepartment of Periodontology, Center for Dentistry and Oral Medicine (Carolinum), Goethe-University Frankfurt am Main, Frankfurt am Main, Germany.ORCID 0000-0002-0405-4220
N LingwalCenter for Dentistry and Oral Medicine (Carolinum), Goethe-University Frankfurt am Main, Frankfurt am Main, Germany.
N El SayedDepartment of Periodontology, Center for Dentistry and Oral Medicine (Carolinum), Goethe-University Frankfurt am Main, Frankfurt am Main, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the survival of teeth with class II furcation involvement (FI) ≥ 5 years after active periodontal treatment (APT) and to identify the prognostic factors.

methodsAll charts of patients having undergone APT at the Department of Periodontology of Goethe-University Frankfurt, Germany, were screened for teeth with class II FI. APT had to be accomplished ≥ 5 years ago. Charts were analysed for data of class II FI teeth at baseline (T0), after APT (T1) and at the last supportive periodontal care (SPC/T2).

resultsTwo-hundred and twenty-two patients (age: 56.5 ± 10.1 years; 118 females; 35 active smokers; 17 diabetics, 154 stage III, 68 stage IV, 94 grade B, 128 grade C) presented 543 teeth with class II FI. Sixty-one patients lost 93 teeth (17%), on average, over 108.4 ± 36.5 months of SPC. Logistic/Cox proportional hazards mixed-model regressions associated increased tooth loss with irregular SPC (p = 0.023/0.073), premolar versus molar (p = 0.041/0.017), root canal filling (RCF) (p < 0.001) and multiple class II FI per tooth at T1 (p = 0.001/0.024).

conclusionsOf a total of 543 teeth with class II FI, 83% were retained for 108.6 ± 36.5 months. Multiple class II FI at T1, RCF, premolars and irregular SPC were found to compromise the long-term prognosis of teeth with class II FI.

Indexed as

Furcation DefectsAdultAgedBicuspidCohort StudiesFemaleFollow-Up StudiesHumansMaleMiddle AgedMolarPrognosisRetrospective StudiesRoot Canal TherapySmokingTooth Lossfurcation involvement degree IIperiodontal treatmentperiodontitis stage III and IV

Identifiers

PMID40452327
PMCPMC12377941

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Registered trials

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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.