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A clinical protocol for intraoral digital impression of screw-retained CAD/CAM framework on multiple implants based on wavefront sampling technology


Moreno, Angel; Giménez, Beatriz; Özcan, Mutlu; Pradíes, Guillermo (2013). A clinical protocol for intraoral digital impression of screw-retained CAD/CAM framework on multiple implants based on wavefront sampling technology. Implant Dentistry, 22(4):320-325.

Abstract

PURPOSE: To obtain an accurate CAD/CAM metal framework over 6 implants using a Chairside Intraoral Scanner based on the principle of active (optical) wavefront sampling.
MATERIAL AND METHODS: Six prototype cylindrical scan bodies screwed in the implants were used to obtain an intraoral digital impression. A conventional resin tooth try-in was fabricated and digitized with an extraoral scanner, and this dataset was merged to the digital data obtained from the intraoral impression to calculate the best framework design with advanced CAD software. The framework was fabricated with a 5-axis computer numerical control milling unit. Three clinical tests (saliva intrusion, Sheffield test, and screw resistance test) were performed to assess the fit of the framework.
RESULTS: Under 3 clinical tests, an accurate fit was observed.
CONCLUSION: The case presented in this report proposes a new clinical protocol for obtaining accurate digital impressions of multiple implants.

Abstract

PURPOSE: To obtain an accurate CAD/CAM metal framework over 6 implants using a Chairside Intraoral Scanner based on the principle of active (optical) wavefront sampling.
MATERIAL AND METHODS: Six prototype cylindrical scan bodies screwed in the implants were used to obtain an intraoral digital impression. A conventional resin tooth try-in was fabricated and digitized with an extraoral scanner, and this dataset was merged to the digital data obtained from the intraoral impression to calculate the best framework design with advanced CAD software. The framework was fabricated with a 5-axis computer numerical control milling unit. Three clinical tests (saliva intrusion, Sheffield test, and screw resistance test) were performed to assess the fit of the framework.
RESULTS: Under 3 clinical tests, an accurate fit was observed.
CONCLUSION: The case presented in this report proposes a new clinical protocol for obtaining accurate digital impressions of multiple implants.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic for Fixed and Removable Prosthodontics
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2013
Deposited On:04 Feb 2014 10:25
Last Modified:16 Feb 2018 19:18
Publisher:Lippincott, Williams & Wilkins
ISSN:1056-6163
OA Status:Green
Publisher DOI:https://doi.org/10.1097/ID.0b013e3182980fe9
PubMed ID:23817542

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