- ICH GCP
- Rejestr badań klinicznych w USA
- Badanie kliniczne NCT07580495
Effect of Collagen Membrane on Ridge Preservation
Effect of Collagen Membrane on Ridge Preservation for Delayed Implant Placement in Sites With Absent Buccal Bone Wall: A Randomized Controlled Trial
This study will evaluate whether adding a resorbable collagen membrane to an anorganic bone-collagen composite (ABCC) graft improves ridge preservation after tooth extraction. Ridge preservation is a procedure used to maintain the shape and volume of the jawbone following tooth removal, which is important for future dental implant placement.
Participants will be randomly assigned to receive either ABCC alone or ABCC combined with a collagen membrane. Healing outcomes will be assessed after approximately 4 months using three-dimensional cone beam computed tomography (CBCT) scans.
The primary outcome is the change in horizontal ridge dimension (width). Secondary outcomes include vertical and contour changes in ridge dimensions, changes in soft tissue contour assessed with digital scans, postoperative healing and complications (such as wound dehiscence, swelling, or infection), and patient-reported outcomes, including pain and satisfaction. In a subset of participants, bone healing will also be evaluated using laboratory and imaging analyses of bone samples obtained at the time of implant placement. The study will additionally assess whether the treatment allows implant placement in the ideal position without the need for further bone grafting.
Przegląd badań
Status
Szczegółowy opis
This study is a clinical trial that evaluates two different approaches to preserve the jawbone after tooth extraction in areas where part of the bone is already missing. Preserving the bone is important to support future dental implants.
Participants will be randomly assigned (like flipping a coin) to receive one of two treatments: a bone graft material alone, or the same bone graft combined with a protective collagen membrane placed over it.
Tooth extraction and follow-up care will be performed in the same manner for all participants. After approximately 4 months of healing, participants will return for dental implant placement.
During the healing period and at the time of implant placement, the research team will evaluate how well the bone and gums have healed. This will include three-dimensional CBCT scans, digital intraoral scans, and clinical measurements. In some participants, a small sample of bone will be collected at the time of implant placement to study bone healing.
The study will compare how effectively each treatment maintains the shape and volume of the jawbone, the quality of soft tissue healing, the risk of complications, patient-reported outcomes (PROs), including comfort and satisfaction, and whether additional procedures are required prior to implant placement.
Typ studiów
Zapisy (Szacowany)
Faza
- Nie dotyczy
Kontakty i lokalizacje
Kontakt w sprawie studiów
- Nazwa: Carla Sanchez, MS
- Numer telefonu: 4126241179
- E-mail: cab28@pitt.edu
Kopia zapasowa kontaktu do badania
- Nazwa: Debora R Dias, DDS, PhD
- Numer telefonu: 4126488595
- E-mail: deboradias@pitt.edu
Lokalizacje studiów
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Pennsylvania
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Pittsburgh, Pennsylvania, Stany Zjednoczone, 15213
- Rekrutacyjny
- University of Pittsburgh School of Dental Medicine, Department of Periodontics and Preventive Dentistry
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Kontakt:
- Andrea Ravida, DDS, PhD
- Numer telefonu: 7347309678
- E-mail: andrearavida@pitt.edu
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Główny śledczy:
- Debora R Dias, DDS, PhD
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Kontakt:
- Debora R Dias, DDS, PhD
- Numer telefonu: 412-648-8595
- E-mail: deboradias@pitt.edu
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Kryteria uczestnictwa
Kryteria kwalifikacji
Wiek uprawniający do nauki
- Dorosły
- Starszy dorosły
Akceptuje zdrowych ochotników
Opis
Inclusion Criteria:
- Adults aged 18-80
- Indicated for extraction of a single-rooted maxillary tooth
- ≥ 50% buccal bone dehiscence confirmed by CBCT reconstructions
- Presence of both adjacent teeth
- No interproximal bone loss
- ASA I-II health status
- Ability to comply with required procedures, including attending required number of clinic visits
Exclusion Criteria:
- Patients diagnosed with periodontitis adjacent to the area to be treated
- History of allergic reactions to local anesthetics or bone graft material (self-reported);
- Current heavy smokers (≥ 10 cigarettes/day) or those who quit smoking recently (self-reported; last 6 months);
- Diagnosis of diabetes mellitus, liver or kidney failure (self-reported);
- Presence of active infectious diseases of any kind;
- History of chemotherapy or radiation therapy to the head or neck within the past 5 years (self-reported);
- Severe hematologic disorders (risk for hemorrhage)(self-reported);
- Assumption of corticosteroids, IV bisphosphonates or immunosuppressive drugs;
- Any history of alcohol or drug abuse (self-reported);
- Pregnancy or plans to become pregnant within 4 months of study enrollment (self-reported);
Plan studiów
Jak projektuje się badanie?
Szczegóły projektu
- Główny cel: Leczenie
- Przydział: Randomizowane
- Model interwencyjny: Przydział równoległy
- Maskowanie: Podwójnie
Broń i interwencje
Grupa uczestników / Arm |
Interwencja / Leczenie |
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Aktywny komparator: Control group (bone graft only)
Control group (bone graft only): The socket will be grafted with ABCC alone.
The socket entrance will be covered with a collagen sponge, which will be secured with passive cross-mattress polytetrafluoroethylene sutures (PTFE) without attempting primary closure.
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Tooth extraction will be performed by a calibrated periodontist using a minimally invasive, flapless, atraumatic technique with periotomes and elevators to preserve socket architecture.
Granulation tissue will be carefully removed without flap elevation.
The extraction socket will be grafted with ABCC (SigmaGraft®).
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Eksperymentalny: Test group (bone graft + collagen membrane)
Test group (bone graft + collagen membrane): A buccal pouch will be created on the buccal aspect, between the bone and the buccal flap, using tunneling instruments to accommodate the resorbable collagen membrane (InterCollagen® Guide, SigmaGraft).
The socket will then be grafted with ABCC.
The socket entrance will be covered with a collagen sponge, which will be secured with passive cross-mattress PTFE sutures without attempting primary closure.
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Tooth extraction will be performed by a calibrated periodontist using a minimally invasive, flapless, atraumatic technique with periotomes and elevators to preserve socket architecture.
Granulation tissue will be carefully removed without flap elevation.
The extraction socket will be grafted with ABCC (SigmaGraft®).
A buccal pouch will be created on the buccal aspect, between the bone and the buccal flap, using tunneling instruments to accommodate a resorbable collagen membrane (InterCollagen® Guide; SigmaGraft®).
The membrane will be positioned in the buccal tunnel to replace the missing buccal bone wall and provide graft containment.
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Co mierzy badanie?
Podstawowe miary wyniku
Miara wyniku |
Opis środka |
Ramy czasowe |
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Horizontal dimensional changes (%)
Ramy czasowe: Baseline and 4 months
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Change in horizontal ridge width at 3 mm apical to the crest, measured on CBCT scans and expressed in percentage change.
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Baseline and 4 months
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Miary wyników drugorzędnych
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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Horizontal dimensional changes (%)
Ramy czasowe: Baseline and 4 months
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Change in horizontal ridge width at 1 mm apical to the crest, measured on CBCT scans and expressed in percentage change.
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Baseline and 4 months
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Horizontal dimensional changes (%)
Ramy czasowe: Baseline and 4 months
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Change in horizontal ridge width at 5 mm apical to the crest, measured on CBCT scans and expressed in percentage change.
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Baseline and 4 months
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Vertical dimensional changes (%)
Ramy czasowe: Baseline and 4 months
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Change in vertical ridge height at the midbuccal aspect, measured on CBCT scans and expressed in percentage change.
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Baseline and 4 months
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Vertical dimensional changes (%)
Ramy czasowe: Baseline and 4 months
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Change in vertical ridge height at the mid palatal aspect, measured on CBCT scans and expressed in percentage change.
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Baseline and 4 months
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Volumetric dimensional changes (%)
Ramy czasowe: Baseline and 4 months
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Change in the volume of the alveolar process (mm3), measured on CBCT scans in comparison to baseline and expressed in percentage change.
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Baseline and 4 months
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Mid-buccal soft tissue contour change (mm)
Ramy czasowe: Baseline and 4 months
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Linear measurement (mm) of mid-buccal soft tissue profile change assessed by superimposition of stereolithography (STL) datasets.
Adjacent teeth are used as reference for alignment.
A positive value indicates soft tissue gain; a negative value indicates recession.
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Baseline and 4 months
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Mid-buccal soft tissue volume change (%)
Ramy czasowe: Baseline and 4 months
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Volumetric change (mm³) in mid-buccal soft tissue contour calculated by superimposition of STL datasets and expressed in percentage.
Color-coded deviation maps will illustrate areas of soft tissue collapse or gain.
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Baseline and 4 months
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Interproximal papilla height change (mm)
Ramy czasowe: Baseline and 4 months
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Linear measurement (mm) of interproximal papilla height change assessed by superimposition of STL datasets in comparison to baseline.
A positive value indicates papilla gain; a negative value indicates papilla loss.
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Baseline and 4 months
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Wound healing (Wound Healing Index)
Ramy czasowe: 1 week, 2 weeks, 1 month, 4 months
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Wound healing quality assessed using the Wound Healing Index (WHI), a 3-point ordinal scale where 1 = uneventful healing (complete soft tissue coverage, no complications), 2 = normal healing with minor complications, and 3 = poor healing (dehiscence, exposure, or infection requiring intervention).
Lower scores indicate better healing.
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1 week, 2 weeks, 1 month, 4 months
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Incidence of postoperative complications (Percentage)
Ramy czasowe: 1 week, 2 weeks, 1 month, 4 months
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Proportion of participants experiencing at least one postoperative complication (edema, erythema, suppuration, graft exposure, or wound dehiscence) at any follow-up visit.
Complications will be recorded by a blinded clinical examiner at each scheduled visit.
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1 week, 2 weeks, 1 month, 4 months
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Postoperative pain
Ramy czasowe: Day 1, Day 3, 1 week
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Numeric scale (0-10) for pain after the extraction and ridge preservation procedure.
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Day 1, Day 3, 1 week
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Oral health-related quality of life (OHIP-14)
Ramy czasowe: Baseline, 2 weeks, 4 months
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Oral health-related quality of life assessed using the Oral Health Impact Profile - 14 (OHIP-14), a validated 14-item questionnaire.
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Baseline, 2 weeks, 4 months
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Feasibility of prosthetically ideal implant placement without additional augmentation
Ramy czasowe: 4 months
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Ability to place the implant in a prosthetically ideal three-dimensional position at reentry without the need for additional hard-tissue augmentation.
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4 months
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Histological Outcomes
Ramy czasowe: 4 months
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In a subset of patients, a bone core biopsy will be obtained.
Percent area of new bone, residual graft, and marrow spaces assessed by histomorphometric analysis of bone core biopsies obtained at the time of implant placement.
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4 months
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Patient satisfaction (VAS)
Ramy czasowe: 4 months
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Visual analogue scale (0-100) of patient satisfaction with the appearance of the soft tissues
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4 months
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Współpracownicy i badacze
Sponsor
Współpracownicy
Śledczy
- Główny śledczy: Debora R Dias, DDS, PhD, University of Pittsburgh, Department of Periodontics and Preventive Dentistry
Publikacje i pomocne linki
Publikacje ogólne
- Thoma DS, Zeltner M, Hilbe M, Hammerle CH, Husler J, Jung RE. Randomized controlled clinical study evaluating effectiveness and safety of a volume-stable collagen matrix compared to autogenous connective tissue grafts for soft tissue augmentation at implant sites. J Clin Periodontol. 2016 Oct;43(10):874-85. doi: 10.1111/jcpe.12588. Epub 2016 Aug 12.
- Araujo MG, Lindhe J. Dimensional ridge alterations following tooth extraction. An experimental study in the dog. J Clin Periodontol. 2005 Feb;32(2):212-8. doi: 10.1111/j.1600-051X.2005.00642.x.
- Hutton CG, Johnson GK, Barwacz CA, Allareddy V, Avila-Ortiz G. Comparison of two different surgical approaches to increase peri-implant mucosal thickness: A randomized controlled clinical trial. J Periodontol. 2018 Jul;89(7):807-814. doi: 10.1002/JPER.17-0597. Epub 2018 Jul 20.
- Natto ZS, Parashis A, Steffensen B, Ganguly R, Finkelman MD, Jeong YN. Efficacy of collagen matrix seal and collagen sponge on ridge preservation in combination with bone allograft: A randomized controlled clinical trial. J Clin Periodontol. 2017 Jun;44(6):649-659. doi: 10.1111/jcpe.12722. Epub 2017 May 26.
- Tonetti MS, Sanz M, Avila-Ortiz G, Berglundh T, Cairo F, Derks J, Figuero E, Graziani F, Guerra F, Heitz-Mayfield L, Jung RE, Lai H, Needleman I, Papapanou PN, Sailer I, Sanz-Sanchez I, Schwarz F, Shi J, Thoma D. Relevant domains, core outcome sets and measurements for implant dentistry clinical trials: The Implant Dentistry Core Outcome Set and Measurement (ID-COSM) international consensus report. J Clin Periodontol. 2023 May;50 Suppl 25:5-21. doi: 10.1111/jcpe.13808. Epub 2023 May 4.
- Vignoletti F, Matesanz P, Rodrigo D, Figuero E, Martin C, Sanz M. Surgical protocols for ridge preservation after tooth extraction. A systematic review. Clin Oral Implants Res. 2012 Feb;23 Suppl 5:22-38. doi: 10.1111/j.1600-0501.2011.02331.x.
- Barone A, Toti P, Quaranta A, Alfonsi F, Cucchi A, Calvo-Guirado JL, Negri B, Di Felice R, Covani U. Volumetric analysis of remodelling pattern after ridge preservation comparing use of two types of xenografts. A multicentre randomized clinical trial. Clin Oral Implants Res. 2016 Nov;27(11):e105-e115. doi: 10.1111/clr.12572. Epub 2015 Feb 26.
- Avila-Ortiz G, Couso-Queiruga E, Stuhr S, Chambrone L. Long-term outcomes of post-extraction alveolar ridge preservation and alveolar ridge reconstruction followed by delayed implant placement: A systematic review. Periodontol 2000. 2025 Jul 3. doi: 10.1111/prd.12642. Online ahead of print.
- Araujo MG, Dias DR, Matarazzo F. Anatomical characteristics of the alveolar process and basal bone that have an effect on socket healing. Periodontol 2000. 2023 Oct;93(1):277-288. doi: 10.1111/prd.12506. Epub 2023 Aug 2.
Daty zapisu na studia
Główne daty studiów
Rozpoczęcie studiów (Rzeczywisty)
Zakończenie podstawowe (Szacowany)
Ukończenie studiów (Szacowany)
Daty rejestracji na studia
Pierwszy przesłany
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy wysłany (Rzeczywisty)
Aktualizacje rekordów badań
Ostatnia wysłana aktualizacja (Rzeczywisty)
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia weryfikacja
Więcej informacji
Terminy związane z tym badaniem
Słowa kluczowe
Dodatkowe istotne warunki MeSH
Inne numery identyfikacyjne badania
- STUDY25080006
Plan dla danych uczestnika indywidualnego (IPD)
Planujesz udostępniać dane poszczególnych uczestników (IPD)?
Opis planu IPD
Informacje o lekach i urządzeniach, dokumenty badawcze
Bada produkt leczniczy regulowany przez amerykańską FDA
Bada produkt urządzenia regulowany przez amerykańską FDA
produkt wyprodukowany i wyeksportowany z USA
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