Conventional Impressions Versus Digital Impression Techniques for Implant Supported Screw Retained Prosthesis

June 20, 2023 updated by: Wafaa elashry, Tanta University

Evaluation of the Accuracy of Conventional and Digital Implant Impression Techniques in Bilateral Distal Extension Cases

The purpose was to evaluate the accuracy of traditional and digital implant level impression procedures by using three-dimensional superimposition analysis , and evaluate the passive fit of screw- retained implant supported restorations fabricated using conventional and digital impression techniques in bilateral distal extension cases (class I kennedy classification)

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Eight patients who had missing all mandibular posterior teeth except first premolars were included in this study. In each patient, 4 implants were placed, 2 in each side to support 3 units screw retained zirconia restorations. Three months after implant placement, each patient underwent two implant level impression techniques (n=8) for each technique: Conventional implant impressions CII (pick-up, splinted transfers), and digital implant impressions DII were captured with TRIOS 3 Shape intraoral optical scanner. In this study, digital impression was considered as a reference data.

Study Type

Interventional

Enrollment (Actual)

8

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Egypt
      • Tanta, Egypt, 3111
        • Wafaa youssif El ashry

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • All participants have sufficient bone length and width for implant insertion.
  • General health of the patients was evaluated by taking a full medical history to ensure that these patients were free from any systemic conditions that would have impaired implant osseointegration
  • Good oral hygiene
  • Sufficient inter-arch spaces
  • The opposing arch was almost dentulous, and any missing teeth were restored using a fixed partial denture.

Exclusion Criteria:

  • parafunctional habits
  • Heavy smoking
  • Those patients with systemic diseases that may influence soft or hard tissue healing.
  • Patients with a history of radiation therapy in the head and neck region.
  • Patients with a history of radiation therapy in the head and neck region.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Accuracy of Implant impression techniques

Active comparative : digital implant impression Participants underwent intra-oral scanning digital impression

Experimental : conventional implant impression Participants underwent conventional impressions And right side of pt mouth received screw retained prosthesis constructed from conventional impression left side received screws retained prosthesis constructed from digital impression
Procedure: Implant placement

4 implants were placed , 2 implants in each side of the patient mouth opposite lower second premolar and second molar

4 implants were placed , 2 implants in each side of the patient mouth opposite lower second premolar and second molar

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Accuracy of digital and conventional implant impression techniques in partially edentulous patient
Time Frame: 12 months
GOM Inspect 2016, Gom GmbH,) that was used to superimpose the Standard tessellation language (STL) datasets of conventional open tray impression technique onto the STL file of the reference (digital implant impression technique) to assess the accuracy and calculate the three-dimensional deviations of scan bodies in color- coding map in micrometers (µm)
12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Tanta University

Investigators

  • Principal Investigator: Wafaa Y El ashry, MSc, Tanta university ,Faculty of Dentistry, Prosthodontics department
  • Principal Investigator: Wafaa Y El ashry, Tanta university, Faculty of Dentistry, Prosthodontics department
  • Principal Investigator: Wafaa Y El ashry, MSc, Tanta University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

April 30, 2020

Primary Completion (Actual)

December 28, 2021

Study Completion (Actual)

December 14, 2022

Study Registration Dates

First Submitted

June 12, 2023

First Submitted That Met QC Criteria

June 20, 2023

First Posted (Actual)

June 22, 2023

Study Record Updates

Last Update Posted (Actual)

June 22, 2023

Last Update Submitted That Met QC Criteria

June 20, 2023

Last Verified

June 1, 2023

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • RP-9-20-1

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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