- ICH GCP
- Registr klinických studií v USA
- Klinická studie 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.
Přehled studie
Postavení
Podmínky
Detailní popis
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 studie
Zápis (Odhadovaný)
Fáze
- Nelze použít
Kontakty a umístění
Studijní kontakt
- Jméno: Carla Sanchez, MS
- Telefonní číslo: 4126241179
- E-mail: cab28@pitt.edu
Studijní záloha kontaktů
- Jméno: Debora R Dias, DDS, PhD
- Telefonní číslo: 4126488595
- E-mail: deboradias@pitt.edu
Studijní místa
-
-
Pennsylvania
-
Pittsburgh, Pennsylvania, Spojené státy, 15213
- University of Pittsburgh School of Dental Medicine, Department of Periodontics and Preventive Dentistry
-
Kontakt:
- Debora R Dias, DDS, PhD
- Telefonní číslo: 4126488595
- E-mail: deboradias@pitt.edu
-
Kontakt:
- Andrea Ravida, DDS, PhD
- Telefonní číslo: 7347309678
- E-mail: andrearavida@pitt.edu
-
Vrchní vyšetřovatel:
- Debora R Dias, DDS, PhD
-
-
Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
- Dospělý
- Starší dospělý
Přijímá zdravé dobrovolníky
Popis
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);
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Léčba
- Přidělení: Randomizované
- Intervenční model: Paralelní přiřazení
- Maskování: Dvojnásobek
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
|---|---|
|
Aktivní komparátor: 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.
|
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®).
|
|
Experimentální: 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.
|
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.
|
Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Horizontal dimensional changes (%)
Časové okno: Baseline and 4 months
|
Change in horizontal ridge width at 3 mm apical to the crest, measured on CBCT scans and expressed in percentage change.
|
Baseline and 4 months
|
Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Horizontal dimensional changes (%)
Časové okno: Baseline and 4 months
|
Change in horizontal ridge width at 1 mm apical to the crest, measured on CBCT scans and expressed in percentage change.
|
Baseline and 4 months
|
|
Horizontal dimensional changes (%)
Časové okno: Baseline and 4 months
|
Change in horizontal ridge width at 5 mm apical to the crest, measured on CBCT scans and expressed in percentage change.
|
Baseline and 4 months
|
|
Vertical dimensional changes (%)
Časové okno: Baseline and 4 months
|
Change in vertical ridge height at the midbuccal aspect, measured on CBCT scans and expressed in percentage change.
|
Baseline and 4 months
|
|
Vertical dimensional changes (%)
Časové okno: Baseline and 4 months
|
Change in vertical ridge height at the mid palatal aspect, measured on CBCT scans and expressed in percentage change.
|
Baseline and 4 months
|
|
Volumetric dimensional changes (%)
Časové okno: Baseline and 4 months
|
Change in the volume of the alveolar process (mm3), measured on CBCT scans in comparison to baseline and expressed in percentage change.
|
Baseline and 4 months
|
|
Mid-buccal soft tissue contour change (mm)
Časové okno: Baseline and 4 months
|
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.
|
Baseline and 4 months
|
|
Mid-buccal soft tissue volume change (%)
Časové okno: Baseline and 4 months
|
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.
|
Baseline and 4 months
|
|
Interproximal papilla height change (mm)
Časové okno: Baseline and 4 months
|
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.
|
Baseline and 4 months
|
|
Wound healing (Wound Healing Index)
Časové okno: 1 week, 2 weeks, 1 month, 4 months
|
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.
|
1 week, 2 weeks, 1 month, 4 months
|
|
Incidence of postoperative complications (Percentage)
Časové okno: 1 week, 2 weeks, 1 month, 4 months
|
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.
|
1 week, 2 weeks, 1 month, 4 months
|
|
Postoperative pain
Časové okno: Day 1, Day 3, 1 week
|
Numeric scale (0-10) for pain after the extraction and ridge preservation procedure.
|
Day 1, Day 3, 1 week
|
|
Oral health-related quality of life (OHIP-14)
Časové okno: Baseline, 2 weeks, 4 months
|
Oral health-related quality of life assessed using the Oral Health Impact Profile - 14 (OHIP-14), a validated 14-item questionnaire.
|
Baseline, 2 weeks, 4 months
|
|
Feasibility of prosthetically ideal implant placement without additional augmentation
Časové okno: 4 months
|
Ability to place the implant in a prosthetically ideal three-dimensional position at reentry without the need for additional hard-tissue augmentation.
|
4 months
|
|
Histological Outcomes
Časové okno: 4 months
|
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.
|
4 months
|
|
Patient satisfaction (VAS)
Časové okno: 4 months
|
Visual analogue scale (0-100) of patient satisfaction with the appearance of the soft tissues
|
4 months
|
Spolupracovníci a vyšetřovatelé
Sponzor
Spolupracovníci
Vyšetřovatelé
- Vrchní vyšetřovatel: Debora R Dias, DDS, PhD, University of Pittsburgh, Department of Periodontics and Preventive Dentistry
Publikace a užitečné odkazy
Obecné publikace
- 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.
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia (Odhadovaný)
Primární dokončení (Odhadovaný)
Dokončení studie (Odhadovaný)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Aktuální)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
Další relevantní podmínky MeSH
Další identifikační čísla studie
- STUDY25080006
Plán pro data jednotlivých účastníků (IPD)
Plánujete sdílet data jednotlivých účastníků (IPD)?
Popis plánu IPD
Informace o lécích a zařízeních, studijní dokumenty
Studuje lékový produkt regulovaný americkým FDA
Studuje produkt zařízení regulovaný americkým úřadem FDA
produkt vyrobený a vyvážený z USA
Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .
Klinické studie na Ztráta alveolární kosti
-
Faeth TherapeuticsUkončenoPokročilý pevný nádor | Mutace PIK3CA | PTEN Loss of Function MutationSpojené státy