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Intraoral Scanning Versus Alginate Impressions in Dental Students

NCT07705009 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 171

Last updated 2026-07-15

No results posted yet for this study

Summary

Dental impressions are used to create a record of a person's teeth and oral structures. Conventional impressions are made using impression material placed in a tray, whereas digital impressions are obtained using an intraoral scanner.

This randomized clinical trial compared conventional alginate impressions with digital intraoral scanning using the TRIOS 3 and Medit i700 scanners among dental students aged 18 to 24 years. Participants were randomly assigned to one of the three impression techniques. Each participant underwent recording of both the upper and lower dental arches using the assigned technique.

The study primarily compared the chairside time required for each technique and the participants' experience immediately after the procedure. Comfort, nausea, breathing, pain, dry-mouth sensation, perceived procedure speed, overall satisfaction, and preference for conventional or digital impressions were also evaluated.

Conditions

  • Dental Impression Techniques

Interventions

PROCEDURE

Conventional Alginate Impression

Maxillary and mandibular conventional impressions were obtained using Tropical alginate impression material and stock trays. The alginate was mixed, placed in the impression tray, and used according to the manufacturer's instructions.

PROCEDURE

TRIOS 3 Intraoral Scanner

Maxillary and mandibular full-arch digital impressions were obtained using the TRIOS 3 intraoral scanner according to the manufacturer's recommended scanning protocol. A bite-registration scan was also obtained.

PROCEDURE

Medit i700 Intraoral Scanner

Maxillary and mandibular full-arch digital impressions were obtained using the Medit i700 intraoral scanner according to the manufacturer's recommended scanning protocol. A bite-registration scan was also obtained.

Sponsors & Collaborators

  • Hue University of Medicine and Pharmacy

    lead OTHER

Principal Investigators

  • Van Nhat Thang Le, DDS PhD · Faculty of Odonto-Stomatology, University of Medicine and Pharmacy, Hue University

Study Design

Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
24 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-05-01
Primary Completion
2025-08-31
Completion
2025-08-31

Countries

  • Vietnam

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07705009 on ClinicalTrials.gov