- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT03840681
Assessment of Guided Bone Regeneration in Atrophic Anterior Maxilla
Assessment of Guided Bone Regeneration in Atrophic Anterior Maxilla Using Native Collagen vs Titanium Reinforced Polytetraflouroethelene Membranes Using an Organic Bovine Bone Mineral
Guided bone regeneration (GBR) is a surgical technique that uses barrier membranes to promote osteoblast cells proliferation and exclude other cells such as epithelium and connective tissue cells. GBR is often combined with bone grafting procedures.
Using Absorbable membranes like collagen membrane will reduce treatment time by decreasing need for second surgery
Studieoversigt
Detaljeret beskrivelse
Assessment of Guided Bone Regeneration in Atrophic Anterior Maxilla using native Collagen vs Titanium Reinforced Polytetraflouroethelene Membranes using an organic bovine Bone mineral.Reconstructive surgery is necessary before implant placement to regenerate bone defects caused by atrophy, dental trauma, extractions or periodontal disease . Success rate of implants is related to the correct position and angulation of implants in residual crest, so that height and thickness of bone augmentation can allow predictable results ,With this in mind, it is important to establish sound clinical concepts with clearly defined parameters that lead to successful esthetics in the anterior maxilla, with long-term stability of the peri-implant tissues.
The most popular surgical procedures to obtain bone augmentation are: bone grafts, guided bone regeneration, maxillary sinus floor elevation, and bone osteogenesis distraction.
Guided bone regeneration (GBR) is a surgical technique that uses barrier membranes to promote osteoblast cells proliferation and exclude other cells such as epithelium and connective tissue cells. GBR is often combined with bone grafting procedures.
Bone grafts are integrated into native bone with three different processes: osteogenesis, osteoinduction and osteoconduction; Osteogenesis is the formation of new bone from osteocompetent cells and is the only process where the graft itself can induce Bone augmentation, Osteoinduction induces Bone Augmentation from the differentiation and stimulation of mesenchymal cells by the bone-inductive proteins, Osteoconduction is the formation of Bone Augmentation along a scaffold from osteocompetent cells of the recipient site .
There are 2 Types of membranes:
III. Non Resorbable membrane IV. Resorbable membrane
Non-resorbable membranes:
With the presentation of the first successful GBR procedures and the subsequent wide and successful application of ePTFE membranes, this material became a standard for bone regeneration. Expanded PTFE is characterized as a polymer with high stability in biological systems. It resists breakdown by host tissues and by microbes and does not elicit immunologic reactions. A frequent complication with membrane application in conjunction with implants is membrane exposure and infection Wound dehiscence and membrane exposure have been reported to impair the amount of bone regenerated in a number of experimental animal and clinical investigations
Bioresorbable membranes:
The requirement of second surgical procedure for the removal of Non Resorbable barrier membrane(NRBM) led to the introduction of bioresorbable barrier membranes (RBM). The advantages of RBM compared to NRBM were as follows:
- Improved soft tissue healing,
- Incorporation of the membranes by the host tissues (depending on material properties),
- Quick resorption in case of exposure, eliminating bacterial contamination. Today, a lot of RBM are commercially available including collagen, freeze-dried fascia lata, freeze-dried dura mater allografts, polyglactin-acid, polylactic acid, polyglycolic acid, polyorthoester, polyurethane, polyhydroxybutyrate, etc.
Undersøgelsestype
Tilmelding (Forventet)
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
- Navn: Mohab f Metwally
- Telefonnummer: 00201115709990
- E-mail: hobaz90_2000@hotmail.com
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
• Patients with atrophied anterior maxillary ridge area.
- Age: 18 years and older.
- No intraoral soft and hard tissue pathology.
- No systemic condition that contraindicate bone augmentation
Exclusion Criteria:
- Heavy smokers more than 20 cigarettes per day.(32)
- Patients with systemic disease that may affect normal healing.
- Psychiatric problems.
- Disorders to bone augmentation are related to history of radiation therapy to the head and neck neoplasia.
- Pregnant or nursing women.
- Patients with uncontrolled diabetes mellitus, rheumatoid arthritis or osteoporosis.
- Patient with previous history of radiotherapy.
Studieplan
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: Ridge augmentation by collagen membrane
|
non invasive technique to increase bone width and eliminate need for second surgery
|
Aktiv komparator: augmentation by titanium reinforced PTFE
|
non invasive technique to increase bone width and eliminate need for second surgery
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
---|---|---|
Height and width of bone gained
Tidsramme: After 6 monthes
|
Height and width of bone gained will be measured from CBCT
|
After 6 monthes
|
Bone area percentage
Tidsramme: After 6 monthes
|
Bone area percentage will be measured by Histo-morphometric analysis
|
After 6 monthes
|
Samarbejdspartnere og efterforskere
Sponsor
Efterforskere
- Ledende efterforsker: Mohamed m Atef, Cairo U
Publikationer og nyttige links
Generelle publikationer
- Gher ME, Quintero G, Assad D, Monaco E, Richardson AC. Bone grafting and guided bone regeneration for immediate dental implants in humans. J Periodontol. 1994 Sep;65(9):881-91. doi: 10.1902/jop.1994.65.9.881.
- Sorni M, Guarinos J, Garcia O, Penarrocha M. Implant rehabilitation of the atrophic upper jaw: a review of the literature since 1999. Med Oral Patol Oral Cir Bucal. 2005 Apr 1;10 Suppl 1:E45-56. English, Spanish.
- McAllister BS, Haghighat K. Bone augmentation techniques. J Periodontol. 2007 Mar;78(3):377-96. doi: 10.1902/jop.2007.060048.
- Lopez MA, Andreasi Bassi M, Confalone L, Carinci F. REGENERATION OF ATROPHIC CRESTAL RIDGES WITH RESORBABLE LAMINA: TECHNICAL NOTE. J Biol Regul Homeost Agents. 2015 Jul-Sep;29(3 Suppl 1):97-100.
- Esposito M, Grusovin MG, Coulthard P, Worthington HV. The efficacy of various bone augmentation procedures for dental implants: a Cochrane systematic review of randomized controlled clinical trials. Int J Oral Maxillofac Implants. 2006 Sep-Oct;21(5):696-710.
- Hoexter DL. Bone regeneration graft materials. J Oral Implantol. 2002;28(6):290-4. doi: 10.1563/1548-1336(2002)0282.3.CO;2.
- Chiapasco M, Zaniboni M, Boisco M. Augmentation procedures for the rehabilitation of deficient edentulous ridges with oral implants. Clin Oral Implants Res. 2006 Oct;17 Suppl 2:136-59. doi: 10.1111/j.1600-0501.2006.01357.x.
- Karring T, Cortellini P, Lindhe J. Regenerative periodontal therapy. In: Lindhe J, Karring T, Lang NP, editors. Clinical periodontology and implant dentistry. Copenhagen: Munksgaard, 1997: 597-646.
- Schliephake H, Kracht D. Vertical ridge augmentation using polylactic membranes in conjunction with immediate implants in periodontally compromised extraction sites: an experimental study in dogs. Int J Oral Maxillofac Implants. 1997 May-Jun;12(3):325-34.
- Gotfredsen K, Nimb L, Buser D, Hjorting-Hansen E. Evaluation of guided bone generation around implants placed into fresh extraction sockets: an experimental study in dogs. J Oral Maxillofac Surg. 1993 Aug;51(8):879-84; discussion 885-6. doi: 10.1016/s0278-2391(10)80108-9.
- Kohal RJ, Trejo PM, Wirsching C, Hurzeler MB, Caffesse RG. Comparison of bioabsorbable and bioinert membranes for guided bone regeneration around non-submerged implants. An experimental study in the mongrel dog. Clin Oral Implants Res. 1999 Jun;10(3):226-37. doi: 10.1034/j.1600-0501.1999.100306.x.
- Becker W, Dahlin C, Becker BE, Lekholm U, van Steenberghe D, Higuchi K, Kultje C. The use of e-PTFE barrier membranes for bone promotion around titanium implants placed into extraction sockets: a prospective multicenter study. Int J Oral Maxillofac Implants. 1994 Jan-Feb;9(1):31-40.
- Elgali I, Omar O, Dahlin C, Thomsen P. Guided bone regeneration: materials and biological mechanisms revisited. Eur J Oral Sci. 2017 Oct;125(5):315-337. doi: 10.1111/eos.12364. Epub 2017 Aug 19.
- Hutmacher D, Hurzeler MB, Schliephake H. A review of material properties of biodegradable and bioresorbable polymers and devices for GTR and GBR applications. Int J Oral Maxillofac Implants. 1996 Sep-Oct;11(5):667-78.
Datoer for undersøgelser
Studer store datoer
Studiestart (Forventet)
Primær færdiggørelse (Forventet)
Studieafslutning (Forventet)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
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Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
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