Evidence map›Paper›PMID 39942172›Full record

ArticleMaterials (Basel, Switzerland)2025

Factors Influencing the Screw Stability of Implant-Supported Single Crowns: An In Vitro Study.

Shaza Bishti, Mohamad Shams Eddin Alsagher, Martin Homa, Stefan Wolfart, Taşkın Tuna

Abstract read
In one paragraph

Article in Materials (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. [Impact of ultrasonic scaling on abutment screw torque in implant restorations].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2026
    Article
  6. Article
  7. What if implant-based prosthodontics would have a standard screw head?International journal of implant dentistry · 2025
    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

5 authors.

Shaza BishtiDepartment of Prosthodontics and Biomaterials, Center for Implantology, Uniklinik RWTH Aachen, 52074 Aachen, Germany.ORCID 0000-0001-5573-0746
Mohamad Shams Eddin AlsagherDepartment of Prosthodontics and Biomaterials, Center for Implantology, Uniklinik RWTH Aachen, 52074 Aachen, Germany.
Martin HomaDepartment of Prosthodontics and Biomaterials, Center for Implantology, Uniklinik RWTH Aachen, 52074 Aachen, Germany.ORCID 0009-0003-2736-2466
Stefan WolfartDepartment of Prosthodontics and Biomaterials, Center for Implantology, Uniklinik RWTH Aachen, 52074 Aachen, Germany.
Taşkın TunaDepartment of Prosthodontics and Biomaterials, Center for Implantology, Uniklinik RWTH Aachen, 52074 Aachen, Germany.ORCID 0000-0003-1924-071X

Funding

Oral Reconstruction Foundation CF21403
6 · The paper itself

Abstract

The aim is to investigate the impact of retention type, implant/abutment angulation, and the presence of sealant/antimicrobial agents on screw loosening of implant-supported restorations. Fifty dental implants along with their respective abutments and screws were allocated to five groups (n = 10). The groups were categorized based on type of crown retention (screw-/cement-retained), implant/abutment angulation (0°/20°), and type of disinfectant/sealant as follows: Cem_control (cemented/0°/none), Cem_GP (cemented/0°/gutta-percha), Cem_CHX (cemented/0°/chlorhexidine), Cem_Ang (cemented/20°/none), and Screw (screwed/0°/ none). Abutment screws were tightened (20 Ncm), and CAD/CAM zirconia crowns were fabricated. Glass ionomer cement was used for crown cementation in the cemented groups. Samples were subjected to dynamic loading in a chewing simulator (1,200,000 cycles/98 N). After loading, the reverse torque values (RTVs) of the abutment screws were determined (Ncm) using an electronic screwdriver, and the reverse torque difference (RTD) was subsequently calculated. The lowest RTD was reported in group Cem_GP (-2.22 ± 1.03), whereas the highest RTD was seen in group Screw (-4.65 ± 1.79). Group Screw showed a statistically significant difference from all other groups (

Indexed as

cement-retainedcrowndisinfectantimplant-supportedscrew looseningscrew-retainedsealant

Identifiers

PMID39942172
PMCPMC11818324

What OpenQuestion holds

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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.