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Tenting Screws in Combination With Platelet Concentrate for Vertical Alveolar Ridge Augmentation

27. september 2021 opdateret af: Second Affiliated Hospital, School of Medicine, Zhejiang University

Tenting Screws in Combination With Platelet Concentrate for Vertical Alveolar Ridge Augmentation: Prospective, Blinded, Randomized Controlled Trial

Alveolar bone resorption often occurs after tooth extraction. At present, guided bone regeneration technique is widely used in clinic since it leads to less trauma and less complications. Tenting screw technology, basic on the classical GBR, implants screws into the surgical area to prevent the barrier membrane from collapsing. Moreover, advanced platelet rich fibrin and injectable platelet-rich fibrin are used to provide the osteogenic function. The investigators intend to increase vertical alveolar bone augmentation by combining tenting screws and A-PRF, I-PRF.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Alveolar bone resorption often occurs after tooth extraction. At present, guided bone regeneration technique is widely used in clinic since it leads to less trauma and less complications. Tenting screw technology, basic on the classical GBR, implants screws into the surgical area to prevent the barrier membrane from collapsing. Moreover, advanced platelet rich fibrin and injectable platelet-rich fibrin are used to provide the osteogenic function. The investigators intend to increase vertical alveolar bone augmentation by combining tenting screws and A-PRF, I-PRF.

Undersøgelsestype

Interventionel

Tilmelding (Forventet)

69

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiekontakt

Studiesteder

  • Kina
    • Zhejiang
      • Hangzhou, Zhejiang, Kina, 310000
        • Rekruttering
        • 2nd Affiliated Hospital, School of Medicine, Zhejiang University, China
        • Kontakt:

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

18 år til 80 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  1. 18-80 years old;
  2. single tooth in the maxillary posterior area cannot be retained (third degree loosening / alveolar bone resorption to the periapical area), implantation is needed after extraction, and CBCT shows vertical bone defect ≥ 3mm;
  3. 4 weeks after extraction or missing teeth within 3-5 weeks;
  4. adjacent teeth exist and loosening is less than Ⅰ degree;
  5. periodontal disease in inactive stage, whole mouth bleeding index (FMBS) is less than 20%;
  6. thick gingival biological type.
  7. CBCT shows that the bone of the edentulous site meets the requirements of tent screw implantation (bone height ≥ 3mm and bone mineral density is sufficient);
  8. the patients and their families have informed consent and signed the informed consent form.

Exclusion Criteria:

  1. pregnant and lactating women;
  2. smoking (> 10 cigarettes per day) and alcoholism;
  3. taking anticoagulants within 3 months before operation;
  4. suffering from autoimmune diseases, diabetes, liver disease, blood system diseases and infectious diseases;
  5. patients taking any drugs that affect platelet function or whose platelet count is less than 200000/mm3 3 months before blood collection;
  6. patients who have been treated with bisphosphate / steroids for a long time;
  7. have received alveolar ridge bone augmentation surgery;
  8. previous history of radiotherapy in the head and neck;
  9. acute inflammation in edentulous sites;
  10. inability to maintain good oral hygiene or follow-up visits as required.

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: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Control group

Vertical alveolar bone augmentation was performed by GBR technique before implantation.

BIO-OSS+ BIO-GIDE barrier membrane
Procedure: guided bone gereration

guided bone generation: GBR is a procedure that uses barrier membranes with or without particulate bone grafts or/and bone substitutes.

tenting screws: Screws are implanted in the surgical area to prevent the barrier membrane from collapsing.

A-PRF/I-PRF: Obtained by autologous blood centrifugation.

Andre navne:
  • tenting screws, A-PRF, I-PRF
Eksperimentel: Treatment group 1

Vertical alveolar bone augmentation was performed by GBR technique and tenting screws before implantation.

BIO-OSS+ BIO-GIDE barrier membrane+ tenting screws
Procedure: guided bone gereration

guided bone generation: GBR is a procedure that uses barrier membranes with or without particulate bone grafts or/and bone substitutes.

tenting screws: Screws are implanted in the surgical area to prevent the barrier membrane from collapsing.

A-PRF/I-PRF: Obtained by autologous blood centrifugation.

Andre navne:
  • tenting screws, A-PRF, I-PRF
Eksperimentel: Treatment group 2

Vertical alveolar bone augmentation was performed by GBR technique in combination with tenting screws and A-PRF, I-PRF before implantation.

BIO-OSS+ BIO-GIDE barrier membrane+ tenting screws+A-PRF, I-PRF
Procedure: guided bone gereration

guided bone generation: GBR is a procedure that uses barrier membranes with or without particulate bone grafts or/and bone substitutes.

tenting screws: Screws are implanted in the surgical area to prevent the barrier membrane from collapsing.

A-PRF/I-PRF: Obtained by autologous blood centrifugation.

Andre navne:
  • tenting screws, A-PRF, I-PRF

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Buccal bone augmentation, BBA(bone height changes between T0 and T2)
Tidsramme: T0(before surgery), T2(6 months after GBR)
The sagittal plane of CBCT image is selected as the measuring plane, and the horizontal tangent of the inferior margin of maxillary sinus / paranasal sinus is selected as the baseline. The investigaters will measure the bone height changes by CBCT(three-dimensional CT) and Related measurement software. The unit of measurement is millimeter.
T0(before surgery), T2(6 months after GBR)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Lingual bone augmentation, LBA(bone height changes between T0 and T2)
Tidsramme: T0(before surgery), T2(6 months after GBR)

The sagittal plane of CBCT image is selected as the measuring plane, and the horizontal tangent of the inferior margin of maxillary sinus / paranasal sinus is selected as the baseline.

The sagittal plane of CBCT image is selected as the measuring plane, and the horizontal tangent of the inferior margin of maxillary sinus / paranasal sinus is selected as the baseline.The investigaters will measure the bone height changes by CBCT(three-dimensional CT) and Related measurement software. The unit of measurement is millimeter.
T0(before surgery), T2(6 months after GBR)

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Bone density, BD
Tidsramme: T2(6 months after GBR)
in the area of bone regeneration, ranging 2mm × 2mm
T2(6 months after GBR)

Samarbejdspartnere og efterforskere

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

Sponsor

Second Affiliated Hospital, School of Medicine, Zhejiang University

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)

10. august 2021

Primær færdiggørelse (Forventet)

1. oktober 2022

Studieafslutning (Forventet)

1. marts 2024

Datoer for studieregistrering

Først indsendt

16. marts 2021

Først indsendt, der opfyldte QC-kriterier

4. april 2021

Først opslået (Faktiske)

8. april 2021

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

29. september 2021

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

27. september 2021

Sidst verificeret

1. februar 2021

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 2021-0050

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