Evidence map›Paper›PMID 30891645›Full record

ArticleClinical oral investigations2019

Comparison of compression screws used for mandible head fracture treatment-experimental study.

Marcin Kozakiewicz

Open access · hybridAbstract read
PubMed Publisher
In one paragraph

Article in Clinical oral investigations, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.4field-weighted citation impact, top 12% 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.

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

18 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Review
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  5. Biomechanical comparison of headless compression screws versus independent locking screw for intra-articular fractures.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024
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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

1 author at 1 institution in 1 country.

Marcin KozakiewiczDepartment of Maxillofacial Surgery, Medical University of Lodz, Gen. J. Haller pl 1st, 90-647, Lodz, Poland. marcin.kozakiewicz@umed.lodz.pl.
Medical University of Lodz · PL

Funding

Uniwersytet Medyczny w Lodzi 1.503/5-061-02/503-51-001and 1.503/5-061-02/503-51-002
6 · The paper itself

Abstract

objectivesCompression screws that can fix a fracture of the condylar head of the mandible are available. Although typical titanium lag screws are generally used, a series of headless screws have been designed for this purpose. The "headless" advantage derived from the complete submergence of the screw in the bone after fixation is the lack of irritation of the lateral ligament of the temporo-mandibular joint by the screw head. The aim of this study is to compare the compression force of typically used lag screws with that of newly developed headless compression screws. MATERIALS AND

methodsThis study tested five types of screws with a 14-mm length: 10 2.0-mm lag screws and 40 headless screws (four groups of equal size: 1.5-mm H screws, 1.8-mm H screws, 2.0-mm H screws, and 1.8-mm W screws). Two cuboid blocks of standardized polyurethane foam were fixed by one screw. The maximal compression force (F in N) and torque at maximal compression force (T in Ncm) were tested according to the guidelines of the American Society for Testing and Materials (ASTM F1839-08).

resultsThe test results were as follows: 2.0-mm lag screw: F = 211.5 ± 20.7 and T = 21.1 ± 1.6; 1.5-mm H screw: F = 47.2 ± 5.6 and T = 18.2 ± 1.1; 1.8-mm H screw: F = 95.5 ± 9.8 and T = 18.2 ± 1.1; 2.0-mm H screw: F = 145.1 ± 18.4 and T = 25.5 ± 1.5; and 1.8-mm W screw: F = 180.5 ± 8.7 and T = 26.4 ± 2.8. Each type of screw significantly differed from one another as far as compression forces (F) were considered (p < 0.05): the best is the lag screw contrary to the thinnest H screw which is the worst one. For all tested screws, the compression force depended on the torque (S curve relationship was revealed, p < 0.05) and screw diameter (a larger diameter yielded greater compression, p < 0.05).

conclusionsThe 8-mm headless screws featured only a small loss of compression ability compared to the titanium lag screws. CLINICAL RELEVANCE: Headless screws are mechanically attractive fixation materials for condylar head fracture treatment.

Indexed as

Bone ScrewsFractures, BoneMandibular InjuriesBiomechanical PhenomenaFracture Fixation, InternalHumansPressureHead fractureHeadless compression screwMandible condyleSurgical treatment

Identifiers

PMID30891645
OpenAlexW2924508423

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.