NCT05938400

Impression & Prosthesis Quality Made From Different Polyvinylsiloxane Impression Techniques

Clinical Evaluation of Impressions Made Using One Step & Two Step Polyvinylsiloxane Impression Techniques and Resulting Fixed Prosthesis-A Randomised Controlled Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 62 (actual)
• Sponsor: Dow University of Health Sciences · Academic / Other
• Sex: All
• Age: 18 Years – 60 Years
• Healthy volunteers: Accepted

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.

Detailed 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.

Conditions

• Endodontically Treated Teeth
• Missing Teeth
• Discoloration, Tooth
• Prosthesis Failure, Dental
• Open Margin on Tooth Restoration

Interventions

Type	Name	Description
DEVICE	Polyvinylsiloxane impression with different techniques	One step impression technique will be compared with the standard two step technique

Timeline

• Start date: 2023-07-02
• Primary completion: 2023-09-30
• Completion: 2023-09-30
• First posted: 2023-07-10
• Last updated: 2023-12-12

Locations

1 site across 1 country: Pakistan