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3D-Printed Resin Crowns vs Stainless Steel Crowns in Pulpotomized Primary Molars. (3DRSCVSSSC)

11. juni 2026 opdateret af: Nariman osama Mohamed, Cairo University

Clinical Evaluation of 3D Printed Resin Based Crowns Versus Stainless Steel Crowns in Pulpotomized Primary Mandibular Molars : A Randomized Controlled Clinical Trial

The goal of this clinical trial is to learn whether 3D-printed resin-based crowns are an effective alternative to stainless steel crowns for restoring pulpotomized primary mandibular molars in children. The main questions it aims to answer are:

Do 3D-printed resin-based crowns provide better gingival health than stainless steel crowns? Are there differences in plaque accumulation, crown retention, and child and parent satisfaction between the two crown types?

Participants will:

Receive either a 3D-printed resin-based crown or a stainless steel crown after pulpotomy.

Attend follow-up visits for clinical evaluation over 12 months.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

primary mandibular molars will be randomly assigned to receive either 3D-printed resin-based crowns or stainless steel crowns. Following pulp therapy and crown placement, participants will attend follow-up visits over a 12-month period. Clinical evaluation will be performed to assess gingival health, plaque accumulation, crown retention, and child and parent satisfaction, in order to determine whether 3D-printed resin-based crowns can be an effective esthetic alternative to stainless steel crowns.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

26

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Egypten
      • Cairo, Egypten
        • Faculty of dentistry

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

  • Barn

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

Children aged 4 to 8 years. Cooperative children who are able to accept dental treatment. Teeth diagnosed with reversible pulpitis. Children in good general health with no systemic conditions affecting oral health.

Parents/guardians willing to provide written informed consent and attend follow-up visits.

Exclusion Criteria:

Teeth deemed non-restorable (e.g., gross carious destruction or fractures beyond restoration).

Parents/guardians unwilling to participate in the study or provide informed consent.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: 3D printed resin crowns
Children will receive indirect restorations using 3D-printed resin crowns on primary molars affected by reversible pulpitis
Enhed: 3D printed resin based crowns
1-Select an appropriately sized resin-based prefabricated crown based on the mesio-distal width of the tooth. 2-Perform occlusal reduction of approximately 1.5-2.0 mm following the natural occlusal anatomy. 3-Reduce buccal and lingual cusps, central groove, and marginal ridges to achieve adequate occlusal clearance. 4-Perform proximal reduction using a tapered fissure or diamond bur to eliminate mesial and distal contacts by approximately 1.0 mm. 5-Avoid creating ledges or damaging adjacent teeth during proximal reduction. 6-Slightly reduce buccal and lingual surfaces to eliminate undercuts and facilitate crown seating. 7-Round and smooth all sharp line angles and points of the preparation. 8-In cases with adjacent teeth, perform additional interproximal reduction if required for proper seating.9-Try-in the crown intraorally and seat it using firm pressure from lingual to buccal direction. 10-Check marginal adaptation, ensuring slight subgingival extension (approximately 0.5-1.0 mm).
Aktiv komparator: Stainless steel crowns
Children will receive stainless steel crowns on primary molars affected by reversible pulpitis
Enhed: Prefabricated stainless steel crowns
1-Select an appropriately sized stainless steel crown based on the mesiodistal width of the tooth. 2-Perform minimal occlusal reduction (approximately 1.0-1.5 mm) following the anatomical occlusal contour to create suficient space for crown placement. 3-Lightly reduce proximal contacts to allow crown seating, without creating steps or excessive taper. 4-Perform minimal buccal and lingual reduction only if required to eliminate undercuts and facilitate passive seating. 5-Round sharp line angles and smooth rough surfaces to allow proper adaptation. 5-Verify adequate occlusal clearance and passive path of insertion. 6-Try-in the crown and adjustsize if necessary to ensure proper fit. 7-Trim and contour crown margins to achieve optimal gingival adaptation (if needed). 8-Seat the crown firmly using finger pressure to confirm complete seating. 9-Cement the crown with glass ionomer cement and remove excess cement after initial setting.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Gingival index
Tidsramme: baseline, 3 months, 6 months, 9 months, 12 months

The GI was measured by passing an explorer tip gently within the sulcus mesial, distal, buccal, and lingual surface of each crowned molar. it was scored on a scale of 0 to 3 0= no bleeding

  1. only one bleeding point appearing someseconds after probing
  2. bleeding points appearing immediately after probing
  3. profuse bleeding appearing immediately after probing spreading towards the marginal gingiva
baseline, 3 months, 6 months, 9 months, 12 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Plaque accumulation
Tidsramme: baseline, 3 months, 6 months, 9 months, 12 months
Silness &Löe plaque index 0: no plaque. 1: film at gingival margin. 2: moderate accumulation. 3: abundance of plaque.
baseline, 3 months, 6 months, 9 months, 12 months
Child and parent satisfaction
Tidsramme: Immediately post operative
Child and parent satisfaction will be assessed using a structured questionnaire based on a Likert scale. Participants (children and their parents/guardians) will rate their satisfaction with the treatment experience, comfort, aesthetics, and overall acceptance. Responses will be recorded on a 5-point Likert scale ranging from "very dissatisfied" to "very satisfied." The scores will be analyzed to compare satisfaction between study groups.
Immediately post operative
Crown retention
Tidsramme: baseline, 3 months, 6 months, 9 months, 12 months
Using United States Public Health Service (USPHS) criteria Alpha : intact Bravo : chipped or loss of material Charlie : complete loss of crown
baseline, 3 months, 6 months, 9 months, 12 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Cairo University

Efterforskere

  • Studiestol: Sherine Badr, PHD, Cairo University
  • Ledende efterforsker: Nariman Osama, BDS, Cairo University
  • Studieleder: Hanna Abdel Moneim, PHD, Cairo 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.

Generelle publikationer

Hjælpsomme links

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 (Anslået)

1. juli 2026

Primær færdiggørelse (Anslået)

1. juli 2027

Studieafslutning (Anslået)

1. august 2027

Datoer for studieregistrering

Først indsendt

9. juni 2026

Først indsendt, der opfyldte QC-kriterier

11. juni 2026

Først opslået (Faktiske)

15. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

15. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

11. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • FDCU-2026-01

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Individual Participant Data (IPD) will not be shared. The study is conducted as part of a master's degree project, and participant confidentiality and privacy will be maintained according to institutional ethical guidelines. Only aggregated and anonymized study results may be published or presented

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

produkt fremstillet i og eksporteret fra U.S.A.

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Caries i tænderne

Kliniske forsøg med 3D printed resin based crowns

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Sponsorer og samarbejdspartnere

Medicinske tilstande

Narkotikainterventioner

CROs by country

CROs in Saint Lucia

Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner