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

27. september 2021 oppdatert av: 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.

Studieoversikt

Status

Rekruttering

Forhold

Intervensjon / Behandling

Detaljert 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.

Studietype

Intervensjonell

Registrering (Forventet)

69

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studiesteder

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

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

18 år til 80 år (Voksen, Eldre voksen)

Tar imot friske frivillige

Ja

Kjønn som er kvalifisert for studier

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

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Enkelt

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Control group

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

BIO-OSS+ BIO-GIDE barrier membrane
Fremgangsmåte: 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 navn:
  • tenting screws, A-PRF, I-PRF
Eksperimentell: 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
Fremgangsmåte: 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 navn:
  • tenting screws, A-PRF, I-PRF
Eksperimentell: 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
Fremgangsmåte: 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 navn:
  • tenting screws, A-PRF, I-PRF

Hva måler studien?

Primære resultatmål

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

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Second Affiliated Hospital, School of Medicine, Zhejiang University

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)

10. august 2021

Primær fullføring (Forventet)

1. oktober 2022

Studiet fullført (Forventet)

1. mars 2024

Datoer for studieregistrering

Først innsendt

16. mars 2021

Først innsendt som oppfylte QC-kriteriene

4. april 2021

Først lagt ut (Faktiske)

8. april 2021

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

29. september 2021

Siste oppdatering sendt inn som oppfylte QC-kriteriene

27. september 2021

Sist bekreftet

1. februar 2021

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • 2021-0050

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

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Legemiddel- og utstyrsinformasjon, studiedokumenter

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Nei

produkt produsert i og eksportert fra USA

Nei

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