Evidence map›Paper›PMID 34121148›Full record

ArticleInternational journal of implant dentistry2021

Immediate implant-retained prosthetic obturation after maxillectomy based on zygomatic implant placement by 3D-guided surgery: a cadaver study.

N Vosselman, H H Glas, S A H J de Visscher, J Kraeima, B J Merema, H Reintsema, G M Raghoebar, M J H Witjes

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

Article in International journal of implant dentistry, 2021. 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
2.9field-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

7 citing papers in PubMed, 18 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

8 authors at 1 institution in 1 country.

N Vosselman *Department of Oral and Maxillofacial Surgery, University of Groningen and University Medical Center Groningen, Hanzeplein 1, P.O. Box 30.001, 9700, Groningen, RB, The Netherlands. n.vosselman@umcg.nl.ORCID 0000-0003-0195-559X
H H Glas *Department of Oral and Maxillofacial Surgery, University of Groningen and University Medical Center Groningen, Hanzeplein 1, P.O. Box 30.001, 9700, Groningen, RB, The Netherlands.
S A H J de VisscherDepartment of Oral and Maxillofacial Surgery, University of Groningen and University Medical Center Groningen, Hanzeplein 1, P.O. Box 30.001, 9700, Groningen, RB, The Netherlands.
J KraeimaDepartment of Oral and Maxillofacial Surgery, University of Groningen and University Medical Center Groningen, Hanzeplein 1, P.O. Box 30.001, 9700, Groningen, RB, The Netherlands.
B J MeremaDepartment of Oral and Maxillofacial Surgery, University of Groningen and University Medical Center Groningen, Hanzeplein 1, P.O. Box 30.001, 9700, Groningen, RB, The Netherlands.
H ReintsemaDepartment of Oral and Maxillofacial Surgery, University of Groningen and University Medical Center Groningen, Hanzeplein 1, P.O. Box 30.001, 9700, Groningen, RB, The Netherlands.
G M RaghoebarDepartment of Oral and Maxillofacial Surgery, University of Groningen and University Medical Center Groningen, Hanzeplein 1, P.O. Box 30.001, 9700, Groningen, RB, The Netherlands.
M J H WitjesDepartment of Oral and Maxillofacial Surgery, University of Groningen and University Medical Center Groningen, Hanzeplein 1, P.O. Box 30.001, 9700, Groningen, RB, The Netherlands.
University Medical Center Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aim of this study was to introduce a complete 3D workflow for immediate implant retained prosthetic rehabilitation following maxillectomy in cancer surgery. The workflow consists of a 3D virtual surgical planning for tumor resection, zygomatic implant placement, and for an implant-retained prosthetic-obturator to fit the planned outcome situation for immediate loading. MATERIALS AND

methodsIn this study, 3D virtual surgical planning and resection of the maxilla, followed by guided placement of 10 zygomatic implants, using custom cutting and drill/placement-guides, was performed on 5 fresh frozen human cadavers. A preoperatively digitally designed and printed obturator prosthesis was placed and connected to the zygomatic implants. The accuracy of the implant positioning was obtained using 3D deviation analysis by merging the pre- and post-operative CT scan datasets.

resultsThe preoperatively designed and manufactured obturator prostheses matched accurately the per-operative implant positions. All five obturators could be placed and fixated for immediate loading. The mean prosthetic point deviation on the cadavers was 1.03 ± 0.85 mm; the mean entry point deviation was 1.20 ± 0.62 mm; and the 3D angle deviation was 2.97 ± 1.44°.

conclusionsIt is possible to 3D plan and accurately execute the ablative surgery, placement of zygomatic implants, and immediate placement of an implant-retained obturator prosthesis with 3D virtual surgical planning.The next step is to apply the workflow in the operating room in patients planned for maxillectomy.

Indexed as

Surgery, Computer-AssistedZygomaCadaverHumansMaxillaProstheses and Implants3D VSPComputer-aided designGuided surgeryMaxillary obturatorMaxillectomyProsthetic rehabilitationThree-dimensionalZygomatic implants

Identifiers

PMID34121148
PMCPMC8200332
OpenAlexW3170720723

What OpenQuestion holds

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LicenceCC BY
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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.