A new technique for testing accuracy and sensitivity of digital bite registration: A prospective comparative study

Camcı, Hasan; Salmanpour, Farhad

doi:10.1016/j.ortho.2021.06.008

Cited by 8 publications

(8 citation statements)

References 35 publications

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“…The findings of this clinical study are in accordance with Iwauchi et al [ 6 ] and Ries et al [ 7 ] who reported that VIR is more precise than conventional interocclusal record. In addition, the results of this study agree with Camcı et al [ 18 ] and Ayuso-Montero et al [ 19 ] who reported better precision for VIR with IOS in detecting occlusal contact area compared to conventional interocclusal record. Similarly, a study by Gjelvold et al [ 20 ] reported that VIR can produce crowns with better occlusion than conventional record.…”

Section: Discussionsupporting

confidence: 91%

In vivo precision of digital static interocclusal registration for full arch and quadrant arch scans: a randomized controlled clinical trial

Morsy

El-Kateb

2022

BMC Oral Health

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Background Clinical studies comparing the accuracy of digital and conventional records for static interocclusal registration are lacking. Therefore, the purpose of this clinical study was to assess the precision of digital interocclusal registration compared to conventional registration for full arch and quadrant arch conditions. Methods Nine individuals with complete natural dentition were enrolled in this study. Each participant received digital scans, conventional impressions, and static interocclusal records according to the following groups: group DF, full arch digital scans and bilateral buccal scans with Medit i700 intraoral scanner (IOS); group DQ, quadrant arch digital scans and unilateral buccal scans with Medit i700 IOS; group CF, full arch polyvinyl siloxane (PVS) impressions and PVS interocclusal records; group CQ, quadrant arch PVS impressions and PVS interocclusal records. For group CF and group CQ, the impressions were poured, mounted with the silicone bites, scanned with a laboratory scanner, and articulated virtually with buccal scans with the laboratory scanner. In each group, each participant received three interocclusal records to repeat the virtual articulation three times and the articulated models were saved as STL files. The STL files were imported into a 3D-processing software to calculate the discrepancies between repeated measures using best-fit-alignment method. The significance between the study groups was calculated with two-tailed paired t-test at P < 0.05. Results For full arch, group DF showed significantly better precision with a mean value of 31 ± 19 µm compared to 204 ± 81 µm for group CF (P = 0.0003). Similarly, for quadrant arch, group DQ showed significantly better precision with a mean value of 18 ± 6 µm compared to 255 ± 136 µm for group CQ (P = 0.0009). No significant difference in precision was found between quadrant arch and full arch when the digital or the conventional method was used. Conclusions The digital approach had significantly better precision for static interocclusal registration compared to the conventional method in both full and quadrant arch situations. Trial Registry This clinical trial was registered on 06/07/2022 in the Pan African Clinical Trial Registry database, the number for the registry is PACTR202207648490275.

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Section: Discussionsupporting

confidence: 91%

In vivo precision of digital static interocclusal registration for full arch and quadrant arch scans: a randomized controlled clinical trial

Morsy

El-Kateb

2022

BMC Oral Health

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“…Although this deviation also affects the accuracy of bite registration, the clinical impact will be less compared to the influence on the fit and marginal adaptation of the final prosthesis. Intraoral scanners register the static relationship of the maxillary and mandibular jaw with a similar or even better accuracy than the conventional physical interocclusal record [ 46 , 47 , 48 , 49 , 50 ]. Ren et al found a mean distortion of 280 µm in occlusal relation for digital impressions of partially edentulous casts [ 51 ].…”

Section: Discussionmentioning

confidence: 99%

Reliability and Time Efficiency of Digital vs. Analog Bite Registration Technique for the Manufacture of Full-Arch Fixed Implant Prostheses

Nuytens¹,

D’haese

Vandeweghe

2022

JCM

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Objective: Information about full-digital protocols for bite registration with intraoral scanners on multiple implants in the edentulous jaw is scarce. The purpose of this comparative in vivo study was to investigate the reliability and time efficiency of a novel full-digital bite registration technique for the manufacture of full-arch maxillary fixed implant prostheses. Material and methods: In ten patients, a full-arch maxillary fixed implant prosthesis was manufactured on multi-unit abutment level through an analog prosthetic workflow. The bite registration was performed with use of a screw-retained polymethyl methacrylate (PMMA) verification jig with detachable wax rim. To articulate the definitive edentulous maxillary implant cast in centric relation at the appropriate occlusal vertical dimension (OVD) to the mandibular antagonist cast, a type II articulator (Artex, Amann Girrbach) was used. Three to six months later, a full-digital bite registration was performed with use of dual-function scan bodies and bilateral connected bite pillars. The bite pillars screwed into the scan bodies were used to adjust and articulate the edentulous maxillary implant arch to the mandibular antagonist arch at the defined OVD. Treatment time for analog and digital bite registration technique was measured in each patient. The reliability of the digital bite registration technique was evaluated by 3D comparison of two sets of stereo lithographic (STL) files obtained from each patient. The three-dimensional deviation was defined along the X-, Y- and Z-axes (Geomagic Control X, 3D Systems Inc., Rock Hill, SC, USA). Results: The treatment time for digital bite registration using dual-function scan bodies and bite pillars was significantly shorter than analog bite registration with verification jig and wax rim (60.30%, SD 5.72%). Minor differences between the two techniques were observed with a linear deviation range of 1115 µm (SD 668 µm) overall, 46.2 µm (SD 731.3 µm) along the X-axis, −200.3 µm (SD 744.3 µm) along the Y-axis and 67.1 µm (SD 752.2 µm) along the Z-axis. Bilateral balanced contacts were registered in all patients during full-digital bite registration. Conclusions: The novel digital bite registration technique with dual-function scan bodies and bite pillars allows for a full-digital workflow for full-arch implant supported restorations. The digital bite workflow was 60% faster, and the overall deviation was around 1 mm, which can be considered clinically acceptable.

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“…20 Digital bite registrations have proven to show higher accuracy when compared to conventional interocclusal records. 11,16,22,42 Conventional interocclusal records can be affected by errors in recording due to dimensional instability and mounting processes which can lead to mandibular cast deviations and, as a result, an inaccurate dental prosthesis. 8,11,42 By contrast, VOR using IOS requires only a new acquisition of the buccal surface when the patient is in occlusion.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, scanning as large fields as possible in both the right and left buccal segments is recommended in order to prevent possible rotations of the models. 22 VOR errors in full arch scans can be caused primarily by variation in the individual scan data or by variability in the buccal bite scans. The possibility that errors in the scan data can cause inaccuracies in VOR should be considered.…”

Section: Discussionmentioning

confidence: 99%

Virtual occlusal records acquired by using intraoral scanners: A review of factors that influence maxillo‐mandibular relationship accuracy

Chinam,

Bekkali,

Kallas

et al. 2023

Journal of Prosthodontics

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PurposeThis review aims to provide a comprehensive summary of how much progress has been made in the field of virtual occlusal records (VOR) obtained with intraoral scanners (IOSs), their accuracy, and what factors influence their accuracy.Materials and methodsAn electronic search was performed in MEDLINE via PubMed and Scopus databases in February 2023. Eligible articles were clinical or in vitro studies evaluating the accuracy of virtual occlusal records with intraoral scanners in completely dentate and partially edentulous arches.ResultsVirtual occlusal records have shown promising results in terms of accuracy, with some studies reporting a high level of agreement with traditional methods. Key factors influencing the accuracy of VOR through intraoral scanners were identified which encompass multiple parameters such as scanner brands, imaging technology, scan quality, best‐fit alignment, software algorithms, intermesh penetrations, and the number of sections and dimensions of the virtual occlusal record. In partially edentate areas, the lack of landmarks in the edentulous area compromises the accuracy of VOR, thus limiting the use of IOS in patients with missing teeth.ConclusionUnderstanding and recognizing these influencing factors will increase the predictability and reliability of dental treatments completed by using digital workflows. However, certain challenges need to be addressed which can influence its accuracy and limit its use in daily practice. Future research should focus on improving these factors to enhance the clinical applicability of virtual occlusal records.This article is protected by copyright. All rights reserved

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A new technique for testing accuracy and sensitivity of digital bite registration: A prospective comparative study

Cited by 8 publications

References 35 publications

In vivo precision of digital static interocclusal registration for full arch and quadrant arch scans: a randomized controlled clinical trial

In vivo precision of digital static interocclusal registration for full arch and quadrant arch scans: a randomized controlled clinical trial

Reliability and Time Efficiency of Digital vs. Analog Bite Registration Technique for the Manufacture of Full-Arch Fixed Implant Prostheses

Virtual occlusal records acquired by using intraoral scanners: A review of factors that influence maxillo‐mandibular relationship accuracy

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