Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Objectives: To assess accuracy of implant complete-arch digital impression with intraoral scanner (IOS) and implant scanbody splinting (ISS).
Methods: An edentulous mandibular model with 4 analogues was fabricated. Four polyetheretherketone (PEEK) implant scanbodies (ISBs) were scanned, according to a randomized sequence, by investigated IOS with (ISS+) and without implant scanbody splinting (ISS-), resulting in 30 test and 30 control files. The model was digitized by industrial optical scanner and the related file superimposed to the test and control files by a best fit algorithm. Linear (ΔX, ΔY and ΔZ-axis) and angular deviations (ΔANGLE) were evaluated for each analogue. A global measure of linear absolute error (ΔASS) was calculated considering the sum of absolute linear discrepancies. Influence of ISS and implant position on IOS accuracy was assessed using General Linear Model and possible interaction between ISS and implant position evaluated.
Results: Implant position showed a significant main effect (p<0.0001) and interaction with ISS (p=0.0454) when ΔASS was considered as response variable. Posterior implants resulted as less accurate. ISS was able to reduce ΔASS for both distal analogues (4.7, p=0.0188). When ΔANGLE was considered as a response variable, implant position and ISS showed significant main and interactive effects (p=0.0039, p<0.0001, p<0.0001). Analogue 3.6 was associated with highest angular discrepancy. This error was significantly reduced by ISS (p<0.0001).
Conclusions: Complete-arch implant digital impression with scanbody splinting showed a significant improvement of the overall accuracy, particularly reducing linear and angular deviations at the most critical posterior implant positions.
Clinical Significance: Intraoral scanner accuracy for implant complete-arch digital impression could be improved by a low cost, easy to assemble and use implant scanbodies splinting 3D printed modular chain.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jdent.2022.104072 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Influence of prosthesis type and intraoral scanner-based extraoral scanning protocol on the passive fit of CAD-CAM verification devices.
J Prosthodont
July 2025
Department of Prosthodontics, Indiana University School of Dentistry, Indianapolis, Indiana, USA.
Purpose: To evaluate the impact of different complete-arch digital scanning techniques and prosthesis types on the passive fit of computer-aided design and computer-aided manufacturing (CAD-CAM) verification devices.
Materials And Methods: Two different maxillary master casts with four multi-unit abutment (MUA) implant analogs (FP-1 and FP-3 prosthesis types) were used as the basis for fabricating verification devices through two impression techniques (OptiSplint and RevEX). Group 1 utilized digital scans of splinted scanbodies reinforced with a light-polymerizing acrylic resin and metal mesh on the FP-1 cast (OptiSplint technique), Group 2 employed the same impression technique as Group 1 on the FP-3 cast, Group 3 applied digital scans of reverse scanbodies connected to a passively fitting interim prosthesis on FP-1 cast (RevEX technique), and Group 4 used the same impression technique as Group 3 on FP-3 cast.
Effects of complete-arch digital scanning techniques on the passive fit of CAD-CAM verification devices.
J Prosthodont
August 2025
Department of Prosthodontics, Indiana University School of Dentistry, Indianapolis, Indiana, USA.
Purpose: To evaluate the impact of different complete-arch digital scanning techniques on the passive fit of computer-aided design and computer-aided manufacturing (CAD-CAM) verification devices.
Materials And Methods: A mandibular master cast with four multiunit abutment implant analogs was used as the basis for fabricating verification devices through three impression techniques. Group 1 employed a conventional open-tray impression technique using polyvinyl siloxane material, Group 2 utilized digital scans of splinted scanbodies reinforced with a light-polymerizing acrylic resin and metal mesh, and Group 3 applied digital scans of reverse scanbodies connected to a passively fitting interim prosthesis.
Complete arch implant scans with standard scan bodies versus scannable healing abutments on scanning accuracy, scanning time, and number of photograms: A comparative clinical study.
J Prosthet Dent
September 2025
Affiliate Professor, Graduate Prosthodontics, Department of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, Wash.; Faculty and Director, Research and Digital Dentistry, Kois Center, Seattle, Wash; and Affiliate Professor, Graduate Prosthodontics, Department of Prosthod
Statement Of Problem: Digital scans for complete arch implant fixed dental prostheses are typically performed using implant scan bodies (ISBs). Scannable healing abutments may be an alternative to ISBs. However, evidence on the accuracy, scanning time, and number of photograms of digital scans using scannable healing abutments remains uncertain.
View Article and Find Full Text PDFEffect of different impression coping and scan body designs on the accuracy of conventional versus digital implant impressions: An in vitro study.
J Dent
July 2024
Department of Restorative Dentistry, College of Dental Medicine, University of Sharjah, Sharjah, UAE. Electronic address:
Objectives: This in vitro study compared the accuracy of conventional versus digital impression techniques for angulated and straight implants using two different impression coping and scan body designs.
Methods: Two implant systems were used: Straumann and Dentegris. Two implants were placed for each system, straight and angulated at 15 degrees mesiodistally.
Effect of different intraoral scanners and scanbody splinting on accuracy of scanning implant-supported full arch fixed prosthesis.
J Esthet Restor Dent
December 2023
Department of Fixed Prosthodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
Objective: This study evaluated the accuracy of different intraoral scanners (IOS) for scanning of implant-supported full arch fixed prosthesis with different implant angulations with and without scanbodies splinting.
Materials And Methods: Two maxillary models were designed and fabricated to receive an all-on-four implant retained. The models were divided into two groups according to the angulation of the posterior implant (Group 1; 30 and Group 2; 45).