- ICH GCP
- Register voor klinische proeven in de VS.
- Klinische proef NCT06186232
Evaluatie van bot dat is geregenereerd met geleide botregeneratie (GBR) met behulp van polymethylmethacrylaat (PMMA)-membraan
Evaluatie van bot dat is geregenereerd na geleide botregeneratie (GBR) met behulp van een aangepast 3D-geprint polymethylmethacrylaat (PMMA) membraan in een horizontaal deficiënte maxillaire esthetische zone
To evaluate the quantity and quality of bone generated, radiographically and histomorphometrically, after guided bone regeneration (GBR) using a membrane of 3D printed custom made (PMMA) and subsequent stability of delayed implant placement.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
Guided bone regeneration (GBR), is the most widely used technique to facilitate bone generation. It depends on using a biocompatible membrane that acts as physical barrier preventing the connective tissue from invading the bone defect.
To achieve maximum bone regeneration, GBR membrane should have several characteristics, including:
- Biocompatibility.
- Proper stiffness for space maintenance.
- Prevent epithelial cell migration.
- Appropriate resorption time after proper bone regeneration. Membranes used in guided bone regeneration (GBR) may have some limitations as the need of second surgery for removal of the membrane (in case of non-resorbable membranes as titanium mesh or expanded polytetrafluoroethylene (e-PTFE) membranes), lake of space maintenance (as collagen membranes) in addition to their high cost.
Thus, we aim to use a commercially available material as polymethyl methacrylate (PMMA) with (GBR) to facilitate bone generation as well as subsequent implant placement.
Recent forms of (PMMA), have been certified to be biocompatible and safe for skin and mucosal contact. PMMA is characterized by having high toughness which may provide a space maintenance when using as membrane in guided bone regeneration (GBR). The PMMA prosthesis can be pre-fabricated, which results in reduction of surgical time, easy technical handling and good esthetic results.
In addition, it has a relatively low cost when it is compared to other types of membranes used in guided bone regeneration (GBR).
Studietype
Inschrijving (Werkelijk)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
-
-
Cairo Governorate
-
Cairo, Cairo Governorate, Egypte, 11553
- Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Cairo University
-
-
Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Patients with edentulous area related to horizontally deficient aesthetic zone of maxilla.
- Patients are physically healthy with no medical history of any systemic or local disease that would contraindicate ridge augmentation and/or implant surgery or complicate the healing process. (Severe liver or kidney disease, a history of head and neck radiotherapy, chemotherapy at the time of surgery, uncontrolled diabetes, active periodontal in the residual dentition, inflammatory or autoimmune disorders of the oral mucosa, poor oral hygiene, patient failure to cooperate, and any other disease condition contraindicating the oral surgery).
- Non-smokers.
- Free from temporomandibular joint disorders and abnormal oral habits such as bruxism.
- The edentulous ridges were covered with optimal thickness of keratinized mucosa with no signs of inflammation, ulceration or scar tissue.
- The occlusion shows sufficient inter-arch space for future prothesis.
Exclusion Criteria:
- General contraindications to surgery.
- Patients subjected to irradiation in the head and neck area less than 1 year before fixation.
- Untreated periodontitis.
- Poor oral hygiene.
- Uncontrolled diabetes.
- Pregnant or nursing.
- Substance abuse.
- Psychiatric problems or unrealistic expectations.
- Severe bruxism or clenching.
- Immunosuppressed or immunocompromised.
- Treated or under treatment with intravenous amino-bisphosphonates.
- Patients participating in other studies, if the present protocol could not be properly followed
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: NVT
- Interventioneel model: Opdracht voor een enkele groep
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Ander: patient with horizontally deficient ridge in ethetic maxilary zone need (GBR) and implant placement
a group of patients with with horizontally deficient ridge in esthetic maxillary zone will undergo ridge augmentation with guided bone regeneration (GBR) technique using polymethylmethacrylate (PMMA) polymer as membrane. |
guided bone regeneration (GBR) using polymethylmethacrylate (PMMA) polymer as membrane.
Andere namen:
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
amount of bone gain
Tijdsspanne: 6 months postoperative
|
radiographic using cone beam computed tomography (CBCT) |
6 months postoperative
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
quality of bone regenerated
Tijdsspanne: 6 months after surgical procedure
|
bone core biopsy (histomorphometric analysis): Because the augmentation wasn't maintained in most cases, the resulting specimens varied too much to support a standardized quantitative histomorphometric protocol. Consequently, descriptive histopathology was performed instead. |
6 months after surgical procedure
|
Andere uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
post operative ridge width
Tijdsspanne: 6 months postoperative
|
using bone caliper |
6 months postoperative
|
|
initial implant stability
Tijdsspanne: 6 months post operative
|
using manual ratchet |
6 months post operative
|
Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Studie directeur: Hesham El Hawary, Professor of Oral and Maxillofacial surgery, Cairo university
Publicaties en nuttige links
Algemene publicaties
- 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.
- Freitas de Andrade P, Meza-Mauricio J, Kern R, Faveri M. Labial Repositioning Using Print Manufactured Polymethylmethacrylate- (PMMA-) Based Cement for Gummy Smile. Case Rep Dent. 2021 Dec 21;2021:7607522. doi: 10.1155/2021/7607522. eCollection 2021.
- Khojasteh A, Kheiri L, Motamedian SR, Khoshkam V. Guided Bone Regeneration for the Reconstruction of Alveolar Bone Defects. Ann Maxillofac Surg. 2017 Jul-Dec;7(2):263-277. doi: 10.4103/ams.ams_76_17.
- Benic GI, Hammerle CH. Horizontal bone augmentation by means of guided bone regeneration. Periodontol 2000. 2014 Oct;66(1):13-40. doi: 10.1111/prd.12039.
- Lee SW, Kim SG. Membranes for the Guided Bone Regeneration. Maxillofac Plast Reconstr Surg. 2014 Nov;36(6):239-46. doi: 10.14402/jkamprs.2014.36.6.239. Epub 2014 Nov 12.
- Fernandes da Silva AL, Borba AM, Simao NR, Pedro FL, Borges AH, Miloro M. Customized polymethyl methacrylate implants for the reconstruction of craniofacial osseous defects. Case Rep Surg. 2014;2014:358569. doi: 10.1155/2014/358569. Epub 2014 Jun 30.
- AlSubaie MF, Al-Sharydah AM, Nassim HM, Alhawsawi A. Orbital Floor Blowout Fracture Reconstruction Using Moldable Polymethyl Methacrylate: A Report of Two Cases and Their Imaging Findings. Open Access Emerg Med. 2022 May 25;14:223-232. doi: 10.2147/OAEM.S359173. eCollection 2022.
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Andere studie-ID-nummers
- OMFS 3310
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .