Evidence map›Paper›PMID 27757323›Full record

ArticlePlastic and reconstructive surgery. Global open2016

Metallic Fixation of Mandibular Segmental Defects: Graft Immobilization and Orofacial Functional Maintenance.

Narges Shayesteh Moghaddam, Ahmadreza Jahadakbar, Amirhesam Amerinatanzi, Mohammad Elahinia, Michael Miller, David Dean

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Plastic and reconstructive surgery. Global open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
6.3field-weighted citation impact, top 3% 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

9 citing papers in PubMed, 33 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

6 authors at 2 institutions in 1 country.

Narges Shayesteh MoghaddamDepartment of Mechanical Industrial and Manufacturing Engineering, University of Toledo, Toledo, OH; and Department of Plastic Surgery, The Ohio State University, Columbus, OH.
Ahmadreza JahadakbarDepartment of Mechanical Industrial and Manufacturing Engineering, University of Toledo, Toledo, OH; and Department of Plastic Surgery, The Ohio State University, Columbus, OH.
Amirhesam AmerinatanziDepartment of Mechanical Industrial and Manufacturing Engineering, University of Toledo, Toledo, OH; and Department of Plastic Surgery, The Ohio State University, Columbus, OH.
Mohammad ElahiniaDepartment of Mechanical Industrial and Manufacturing Engineering, University of Toledo, Toledo, OH; and Department of Plastic Surgery, The Ohio State University, Columbus, OH.
Michael MillerDepartment of Mechanical Industrial and Manufacturing Engineering, University of Toledo, Toledo, OH; and Department of Plastic Surgery, The Ohio State University, Columbus, OH.
David DeanDepartment of Mechanical Industrial and Manufacturing Engineering, University of Toledo, Toledo, OH; and Department of Plastic Surgery, The Ohio State University, Columbus, OH.
The Ohio State University · USUniversity of Toledo · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study is to investigate the behavior of the healthy mandible under maximum molar bite force to demonstrate the problems associated with the current standard of care procedures for mandibular segmental defect reconstruction (ie, use of Ti-6Al-4V hardware and either a single- or double-barrel fibular graft). With current Ti-6Al-4V mandibular reconstruction hardware, there is a significant stiffness mismatch among the hardware, graft, and the remaining host anatomy. How the distribution of mechanical forces through the mandible is altered after a segmental bone loss and reconstruction is incompletely understood.

methodsWe studied a healthy adult mandible for stress, strain, and reaction force distribution during normal mastication. Stress distribution of this model was then used to study problems encountered after mandibular segmental defect reconstructive surgery. We model the use of both single- and double-barrel fibular grafts to repair the loss of the left M

resultsWe found that the stiffness mismatching between the fixation hardware and the graft and host bone causes stress shielding of that bone and stress concentrations in the fixation hardware and screws. These effects are expected, especially during the bone healing period. However, long term, this abnormal stress-strain distribution may lead to either the hardware's failure due to stress concentration or graft failure due to bone resorption as a result of stress shielding. We found that the stress-strain distribution is more normal with a double-barrel fibular graft. Additionally, we found that thinner fixation plates can reduce stress shielding.

conclusionThe proposed model can be used to evaluate the performance and optimization of the fixation device.

Identifiers

PMID27757323
PMCPMC5054989
OpenAlexW2517287930

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.