Intraoral Scanning Versus Alginate Impressions in Dental Students
10. juli 2026 oppdatert av: 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.
Studieoversikt
Status
Fullført
Forhold
Studietype
Intervensjonell
Registrering (Faktiske)
171
Fase
- Ikke aktuelt
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
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Huế, Vietnam, 530000
- Faculty of Odonto-Stomatology, University of Medicine and Pharmacy, Hue University
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Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Voksen
Tar imot friske 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
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Diagnostisk
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / 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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Eksperimentell: 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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Eksperimentell: 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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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
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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Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Etterforskere
- Hovedetterforsker: Van Nhat Thang Le, DDS PhD, Faculty of Odonto-Stomatology, University of Medicine and Pharmacy, Hue University
Publikasjoner og nyttige lenker
Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart (Faktiske)
1. mai 2025
Primær fullføring (Faktiske)
31. august 2025
Studiet fullført (Faktiske)
31. august 2025
Datoer for studieregistrering
Først innsendt
10. juli 2026
Først innsendt som oppfylte QC-kriteriene
10. juli 2026
Først lagt ut (Faktiske)
15. juli 2026
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
15. juli 2026
Siste oppdatering sendt inn som oppfylte QC-kriteriene
10. juli 2026
Sist bekreftet
1. juli 2026
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Andre studie-ID-numre
- H2025/074
Plan for individuelle deltakerdata (IPD)
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NEI
Legemiddel- og utstyrsinformasjon, studiedokumenter
Studerer et amerikansk FDA-regulert medikamentprodukt
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Studerer et amerikansk FDA-regulert enhetsprodukt
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produkt produsert i og eksportert fra USA
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