Impression & Prosthesis Quality Made From Different Polyvinylsiloxane Impression Techniques

Last updated: December 11, 2023
Sponsor: Dow University of Health Sciences
Overall Status: Completed

Phase

N/A

Condition

Periodontitis

Treatment

Polyvinylsiloxane impression with different techniques

Clinical Study ID

NCT05938400
2932
  • Ages 18-60
  • All Genders
  • Accepts Healthy Volunteers

Study Summary

This randomized controlled trial is to clinically assess and compare impression quality of polyvinylsiloxane impression material using one step (experimental) and two step (control) impression techniques and its effect on marginal fit of prosthesis and proximal contact of prosthesis.

Eligibility Criteria

Inclusion

Inclusion Criteria:

  • Indication of fixed-fixed partial denture or crown
  • Good oral hygiene
  • Sound abutment tooth (vital/non-vital)

Exclusion

Exclusion Criteria:

  • Failure to provide written consent to participation in study
  • Long span bridges (Greater than 3 units)
  • Patients with bleeding disorders
  • Cases indicated for resin-bonded prosthesis

Study Design

Total Participants: 62
Treatment Group(s): 1
Primary Treatment: Polyvinylsiloxane impression with different techniques
Phase:
Study Start date:
July 02, 2023
Estimated Completion Date:
September 30, 2023

Study Description

Study participants will be randomly allocated to either of the two groups (experimental or control) through software-generated random numbers.

Indicated tooth will be prepared to receive a fixed prosthesis under local anesthesia as per standard guidelines.

Polyvinylsiloxane (PVS) impressions will be recorded in stock tray after moisture control, according to the assigned group.

In experimental group, light body and putty PVS will be mixed simultaneously and placed in stock tray to record impressions in single stage.

In control group, a putty PVS impression will be recorded first in stock tray and allowed to set. After setting of putty PVS, light-bodied PVS material will be applied to recorded impression surface and reseated in mouth to record final impression in second stage.

All impressions will be disinfected according to the recommended guidelines. All impressions will then be assessed by a senior clinician using 3.5 x magnification loupe and graded according to the selected criteria.

Impressions will then be poured in dental stone and prosthesis will be manufactured in dental lab.

Participants will be recalled for prosthesis trial and fit assessment of prosthesis margins using a dental explorer instrument and visual evaluation. Proximal contact of prosthesis will be graded according the criteria and assessed using dental floss.

Satisfactory prostheses will be cemented after final adjustments.

Connect with a study center

  • Dow University of Health Sciences

    Karachi, Sindh 75600
    Pakistan

    Site Not Available

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