Intraoral Scanning Versus Alginate Impressions in Dental Students
10. juli 2026 opdateret af: Le Van Nhat Thang, Hue University of Medicine and Pharmacy
Procedure Time and Patient Comfort of Intraoral Scanning Versus Alginate Impressions Among Dental Students: A Randomized Clinical Trial
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.
Studieoversigt
Status
Afsluttet
Betingelser
Undersøgelsestype
Interventionel
Tilmelding (Faktiske)
171
Fase
- Ikke anvendelig
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
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-
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Huế, Vietnam, 530000
- Faculty of Odonto-Stomatology, University of Medicine and Pharmacy, Hue University
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Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
Tager imod sunde frivillige
Ja
Beskrivelse
Inclusion Criteria:
- Undergraduate dental students at the University of Medicine and Pharmacy, Hue University.
- Aged 18 to 24 years.
- Willing to undergo one maxillary and one mandibular dental impression using the assigned technique.
- Willing and able to complete the study questionnaire.
- Provided written informed consent.
Exclusion Criteria:
- Currently undergoing orthodontic treatment.
- Presence of a systemic disease or acute condition that limited the ability to cooperate or increased the risk of discomfort during impression taking or intraoral scanning, including an acute respiratory disorder or frequent vomiting.
- Limited mouth opening or an oral and maxillofacial condition that prevented correct impression-tray seating or scanner-tip placement according to the study protocol.
- A maxillofacial abnormality that markedly affected the procedure or caused significant recording distortion.
- An excessive gag reflex that prevented completion of the assigned procedure.
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Diagnostisk
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
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Aktiv komparator: Conventional Alginate Impression
Participants underwent maxillary and mandibular conventional impressions using alginate impression material and stock trays according to the manufacturer's instructions.
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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.
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Eksperimentel: TRIOS 3 Intraoral Scanning
Participants underwent full-arch maxillary and mandibular digital impressions and bite registration using the TRIOS 3 intraoral scanner according to the manufacturer's recommended scanning protocol.
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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.
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Eksperimentel: Medit i700 Intraoral Scanning
Participants underwent full-arch maxillary and mandibular digital impressions and bite registration using the Medit i700 intraoral scanner according to the manufacturer's recommended scanning protocol.
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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.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Total Chairside Procedure Time
Tidsramme: During the assigned impression procedure at the single study visit
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Total chairside procedure time was measured in seconds using a digital stopwatch and calculated as the sum of the recorded procedural stages.
For the conventional alginate group, the stages included maxillary mixing, maxillary impression taking, mandibular mixing, and mandibular impression taking.
For the digital groups, the stages included patient and case information entry, maxillary scanning, and mandibular scanning.
Bite-registration time was excluded from the total procedure time because there was no equivalent stage in the conventional alginate workflow.
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During the assigned impression procedure at the single study visit
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Patient-Reported Overall Comfort During the Impression Procedure
Tidsramme: Immediately after completion of the assigned impression procedure
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Overall comfort during the assigned impression procedure was assessed immediately after the procedure using a 0-to-100 visual analogue scale.
Higher scores indicated greater comfort.
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Immediately after completion of the assigned impression procedure
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Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Efterforskere
- Ledende efterforsker: Van Nhat Thang Le, DDS PhD, Faculty of Odonto-Stomatology, University of Medicine and Pharmacy, Hue University
Publikationer og nyttige links
Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart (Faktiske)
1. maj 2025
Primær færdiggørelse (Faktiske)
31. august 2025
Studieafslutning (Faktiske)
31. august 2025
Datoer for studieregistrering
Først indsendt
10. juli 2026
Først indsendt, der opfyldte QC-kriterier
10. juli 2026
Først opslået (Faktiske)
15. juli 2026
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
15. juli 2026
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
10. juli 2026
Sidst verificeret
1. juli 2026
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Andre undersøgelses-id-numre
- H2025/074
Plan for individuelle deltagerdata (IPD)
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