A modified scan technique for multiple abutment teeth using the trim and lock function

Valenti, Marco; Valenti, A.; Cortellini, Davide; Schmitz, Johannes; Canale, Angelo

doi:10.1016/j.jdent.2022.104406

Cited by 3 publications

(5 citation statements)

References 28 publications

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“…The accuracy of complete-arch intraoral scans for fabricating a larger number of dental restorations (i.e., more than 4 restorations or FDPs involving more than 4 units) or complete-arch toothsupported rehabilitation is uncertain. [42][43][44][45][46][47] The studies analyzing the accuracy of extensive tooth-supported restorations fabricated from complete-arch intraoral scans are actually scarce and have high heterogeneity. [42][43][44][45][46][47] Moreover, based on the best knowledge of the authors, studies reporting the marginal and internal discrepancies of extensive tooth-supported restorations fabricated from completearch intraoral scans do not exist.…”

Section: Accuracy Of Ioss For Fabricating Tooth-supported Restorationsmentioning

confidence: 99%

“…[42][43][44][45][46][47] The studies analyzing the accuracy of extensive tooth-supported restorations fabricated from complete-arch intraoral scans are actually scarce and have high heterogeneity. [42][43][44][45][46][47] Moreover, based on the best knowledge of the authors, studies reporting the marginal and internal discrepancies of extensive tooth-supported restorations fabricated from completearch intraoral scans do not exist. Case report manuscripts describing digital workflows for fabricating complete-arch rehabilitations by using IOSs have been described.…”

Section: Accuracy Of Ioss For Fabricating Tooth-supported Restorationsmentioning

confidence: 99%

“…[15][16][17][18][19]31,[63][64][65] It is important to remember that the accuracy of complete-arch intraoral scans for fabricating more than 4 restorations or FDPs involving more than 4 units, or complete-arch tooth-and implant-supported restorations by using IOSs is uncertain. [42][43][44][45][46][47]…”

Section: Complete-arch Scanmentioning

confidence: 99%

“…The accuracy of complete‐arch intraoral scans for fabricating a larger number of dental restorations (i.e., more than 4 restorations or FDPs involving more than 4 units) or complete‐arch tooth‐supported rehabilitation is uncertain 42–47 . The studies analyzing the accuracy of extensive tooth‐supported restorations fabricated from complete‐arch intraoral scans are actually scarce and have high heterogeneity 42–47 .…”

Section: Decision Criteria Factorsmentioning

confidence: 99%

“…When a greater number or locations of teeth are being restored or when a patient has more than one missing tooth, complete‐arch intraoral scans are recommended (Figures 2 and 3). 15–19,31,63–65 It is important to remember that the accuracy of complete‐arch intraoral scans for fabricating more than 4 restorations or FDPs involving more than 4 units, or complete‐arch tooth‐ and implant‐supported restorations by using IOSs is uncertain 42–47 …”

Section: Decision Tree For Scan Extension Decisionmentioning

confidence: 99%

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A guide for selecting the intraoral scan extension when fabricating tooth‐ and implant‐supported fixed dental prostheses

Revilla‐León,

Gómez‐Polo,

Kois

2023

J Esthet Restor Dent

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ObjectivesTo describe a new classification for intraoral scans based on the scan extension and to introduce a decision guideline to choose the scan extension for fabricating tooth‐ and implant‐supported fixed dental prostheses (FDPs).OverviewMultiple operator‐ and patient‐related factors have been identified that can decrease the scanning accuracy of intraoral scanners (IOSs), including scan extension. However, the decision criteria for selecting scan extension for fabricating tooth‐ and implant‐supported restorations is unclear. Based on the extension of the intraoral digital scans, three types of scans can be defined: half‐arch (anterior or posterior), extended half‐arch, and complete‐arch scan. Variables to consider when choosing the scan extension include the number and location of units being restored, as well as the extension and location of edentulous areas. Additionally, the accuracy of the virtual definitive cast and the accuracy of the maxillomandibular relationship captured by using IOSs should be differentiated.ConclusionsA decision tree for selecting the scan extension is presented. The decision is based on the number and location of units being restored, and the extension and location of edentulous areas. Intraoral scans with reduced scan extension are indicated when fabricating tooth‐ and implant‐supported crowns or short‐span fixed prostheses, when the patient does not have more than one missing tooth in the area of the dental arch included in the scan. For the remaining clinical conditions, complete‐arch intraoral scans are recommended.Clinical SignificanceScan extension is a clinician's decision that should be based on the number and location of units being restored and the extension and location of edentulous areas. Intraoral scans with a reduced scan extension is recommended, when possible.

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Section: Accuracy Of Ioss For Fabricating Tooth-supported Restorationsmentioning

confidence: 99%

Section: Accuracy Of Ioss For Fabricating Tooth-supported Restorationsmentioning

confidence: 99%

Section: Complete-arch Scanmentioning

confidence: 99%

Section: Decision Criteria Factorsmentioning

confidence: 99%

Section: Decision Tree For Scan Extension Decisionmentioning

confidence: 99%

See 3 more Smart Citations

A guide for selecting the intraoral scan extension when fabricating tooth‐ and implant‐supported fixed dental prostheses

Revilla‐León,

Gómez‐Polo,

Kois

2023

J Esthet Restor Dent

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Effect of different surface locking patterns on the trueness of complete arch digital implant scans: An in vitro study

Kondakji,

Lawand,

Yaacoub

et al. 2024

The Journal of Prosthetic Dentistry

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Parameters to Improve the Accuracy of Intraoral Scanners for Fabricating Tooth‐Supported Restorations

Revilla‐León,

Kois

2024

J Esthet Restor Dent

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ObjectivesTo review the factors that impact the accuracy of intraoral scanners (IOSs) when fabricating tooth‐supported restorations.OverviewFactors can have a different impact on IOS accuracy depending on the scanning purpose. If the goal is to fabricate tooth‐supported restorations, it is essential to review the following operator‐related factors: IOS technology and system, scan extension and starting quadrant, scanning pattern, scanning distance, and rescanning methods. Additionally, it is critical to interpret the following patient‐related factors differently: edentulous spaces, presence of existing restorations on adjacent teeth, and characteristics of the tooth preparation (build‐up material, geometry, total occlusal convergence [TOC], finish line location, and surface finishing), and interdental spaces (between tooth preparations or between preparation and the adjacent tooth).ConclusionsFor crown or short‐span fixed dental prostheses, a reduced scan extension is recommended. For complete‐arch scans, it is advisable to start the scan in the same quadrant as the preparation. If the IOS permits locking the scan, rescanning may be indicated. Restorations on tooth preparations and adjacent teeth reduce accuracy. The simpler the geometry and the larger the TOC, the higher the IOS accuracy. Intracrevicular finish lines result in lower accuracy than equigingival or supragingival positions. Air‐particle procedures showed better accuracy than coarse and fine grit and immediate dentin sealing. The greater the space between a preparation and the adjacent tooth, the better the accuracy.Clinical ImplicationsDental professionals must understand and handle the factors that impact the scanning accuracy of intraoral scanners differently depending on the purpose of the scan.

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A modified scan technique for multiple abutment teeth using the trim and lock function

Cited by 3 publications

References 28 publications

A guide for selecting the intraoral scan extension when fabricating tooth‐ and implant‐supported fixed dental prostheses

A guide for selecting the intraoral scan extension when fabricating tooth‐ and implant‐supported fixed dental prostheses

Effect of different surface locking patterns on the trueness of complete arch digital implant scans: An in vitro study

Parameters to Improve the Accuracy of Intraoral Scanners for Fabricating Tooth‐Supported Restorations

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