Evidence map›Paper›PMID 33046631›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

In situ bone regeneration of large cranial defects using synthetic ceramic implants with a tailored composition and design.

Omar Omar, Thomas Engstrand, Lars Kihlström Burenstam Linder, Jonas Åberg, Furqan A Shah, Anders Palmquist, Ulrik Birgersson, Ibrahim Elgali, Michael Pujari-Palmer, Håkan Engqvist and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

32 citing papers in PubMed, 68 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

11 authors at 4 institutions in 1 country.

Omar OmarDepartment of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden.ORCID 0000-0002-2610-1294
Thomas EngstrandStockholm Craniofacial Centre, Department of Molecular Medicine and Surgery, Plastic Surgery Section, Karolinska University Hospital and Karolinska Institutet, 17176 Stockholm, Sweden.ORCID 0000-0002-7487-6457
Lars Kihlström Burenstam LinderDepartment of Clinical Neuroscience, Neurosurgical Section, Karolinska University Hospital and Karolinska Institutet, 17176 Stockholm, Sweden.ORCID 0000-0002-7918-9787
Jonas ÅbergDepartment of Engineering Sciences, Applied Materials Science Section, Uppsala University, 75121 Uppsala, Sweden.ORCID 0000-0003-2232-7226
Furqan A ShahDepartment of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden.ORCID 0000-0002-9876-0467
Anders PalmquistDepartment of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden.ORCID 0000-0002-6974-2577
Ulrik BirgerssonDivision of Imaging and Technology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, 14152 Huddinge, Sweden.ORCID 0000-0002-7983-925X
Ibrahim ElgaliDepartment of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden.
Michael Pujari-PalmerDepartment of Engineering Sciences, Applied Materials Science Section, Uppsala University, 75121 Uppsala, Sweden.ORCID 0000-0001-7004-2853
Håkan EngqvistDepartment of Engineering Sciences, Applied Materials Science Section, Uppsala University, 75121 Uppsala, Sweden.ORCID 0000-0001-9529-650X
Peter ThomsenDepartment of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden; peter.thomsen@biomaterials.gu.se.ORCID 0000-0003-3910-6665
University of Gothenburg · SEUppsala University · SEKarolinska Institutet · SEKarolinska University Hospital · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The repair of large cranial defects with bone is a major clinical challenge that necessitates novel materials and engineering solutions. Three-dimensionally (3D) printed bioceramic (BioCer) implants consisting of additively manufactured titanium frames enveloped with CaP BioCer or titanium control implants with similar designs were implanted in the ovine skull and at s.c. sites and retrieved after 12 and 3 mo, respectively. Samples were collected for morphological, ultrastructural, and compositional analyses using histology, electron microscopy, and Raman spectroscopy. Here, we show that BioCer implants provide osteoinductive and microarchitectural cues that promote in situ bone regeneration at locations distant from existing host bone, whereas bone regeneration with inert titanium implants was confined to ingrowth from the defect boundaries. The BioCer implant promoted bone regeneration at nonosseous sites, and bone bonding to the implant was demonstrated at the ultrastructural level. BioCer transformed to carbonated apatite in vivo, and the regenerated bone displayed a molecular composition indistinguishable from that of native bone. Proof-of-principle that this approach may represent a shift from mere reconstruction to in situ regeneration was provided by a retrieved human specimen, showing that the BioCer was transformed into well-vascularized osteonal bone, with a morphology, ultrastructure, and composition similar to those of native human skull bone.

Indexed as

Prostheses and ImplantsSkullAdultAnimalsBone RegenerationBone SubstitutesCeramicsDisease Models, AnimalFemaleHumansMalePrinting, Three-DimensionalSheepTitaniumYoung AdultBone SubstitutesTitanium3D printingbioceramiccranial reconstructionosteoinductiontitanium

Identifiers

PMID33046631
PMCPMC7604495
OpenAlexW3091842446

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.