Evidence map›Paper›PMID 34256775›Full record

Observational studyHead & face medicine2021

Predictability of maxillary positioning: a 3D comparison of virtual and conventional orthognathic surgery planning.

Anja Quast, Petra Santander, Timon Kahlmeier, Norman Moser, Henning Schliephake, Philipp Meyer-Marcotty

Abstract readObservational Study
In one paragraph

Observational study in Head & face medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

  1. Trial
  2. Article
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  5. Review
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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.

Anja QuastDepartment of Orthodontics, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany. anja.quast@med.uni-goettingen.de.ORCID http://orcid.org/0000-0001-6243-2886
Petra SantanderDepartment of Orthodontics, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
Timon KahlmeierDepartment of Orthodontics, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
Norman MoserDepartment of Oral and Maxillofacial Surgery, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
Henning SchliephakeDepartment of Oral and Maxillofacial Surgery, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
Philipp Meyer-MarcottyDepartment of Orthodontics, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVirtual surgery planning (VSP) is believed to reduce inaccuracies in maxillary positioning compared to conventional surgery planning (CSP) due to the elimination of face-bow transfer and laboratory steps. However, there is still a lack of comparative studies for the accuracy of splint-based maxillary positioning in CSP versus VSP. Therefore, the objective of this retrospective, observational study was to compare if splints produced by VSP and CSP reach postoperative outcomes within clinically acceptable limits.

methodsThe planned and actual postoperative results of 52 patients (VSP: n = 26; CSP: n = 26) with a mean age of 24.4 ± 6.2 years were investigated by three-dimensional (3D) alignment with planning software. The conventional treatment plan was digitized, so that the evaluation of both methods was performed in the same manner using the same coordinate system. Inaccuracies were measured by sagittal, vertical and transversal deviations of the upper central incisors and the inclination of the maxillary occlusal plane between the planned and achieved maxillary positions.

resultsBoth methods demonstrated significant differences between the planned and actual outcome. The highest inaccuracies were observed in vertical impaction and midline correction. No significant differences between CSP and VSP were observed in any dimension. Errors in vertical and sagittal dimension intensified each other.

conclusionsIn conclusion, splint-based surgeries reached similar results regardless of the applied planning method and splint production.

Indexed as

Orthognathic SurgeryOrthognathic Surgical ProceduresSurgery, Computer-AssistedAdolescentAdultHumansImaging, Three-DimensionalMaxillaOcclusal SplintsRetrospective StudiesYoung AdultAccuracyBSSOLe Fort IMaxillary positioningOrthodontic-surgical treatmentOrthognathic surgeryOsteotomy

Identifiers

PMID34256775
PMCPMC8276391

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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.