Horizontal Ridge DeficiencyNCT06186232
Evaluation of Bone Regenerated With Guided Bone Regeneration (GBR) Using Polymethylmethacrylate (PMMA) Membrane
A study testing guided bone regeneration (GBR). in people with Horizontal Ridge Deficiency, run by Cairo University at 1 site in Egypt.
Trial summary
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. Read more about this study
- Who is it for?
- Ages 18 to 50 yearsHealthy volunteers can take part
- Conditions the study is for
- Horizontal Ridge Deficiency
- What is being tested?
- guided bone regeneration (GBR).
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 10 participants
- Where
- 1 siteEgypt
- Study dates
- 10 Mar 2024to 15 Sep 2026
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 50 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- 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.
Who cannot join
- 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.
Show all 12Show fewer
- 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
Trial locations and contacts
1 site in 1 country.
Egypt1 site
Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Cairo University
Cairo, Cairo Governorate, 11553
About this study
Official title: Evaluation Of Bone Regenerated After Guided Bone Regenration (GBR) Using Customized 3D Printed Polymethylmethacrylate (PMMA) Membrane in Horizontally Deficient Maxillary Aesthetic 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.
Read the detailed description
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).
- Conditions
- Horizontal Ridge Deficiency
- Being tested
- guided bone regeneration (GBR).
- Keywords
- polymethylmethacrylate
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
guided bone regeneration (GBR).Procedure or surgery
Also called implant installation 6 months after (GBR)
guided bone regeneration (GBR) using polymethylmethacrylate (PMMA) polymer as membrane.
| Study group | Role | What they receive |
|---|---|---|
| patient with horizontally deficient ridge in ethetic maxilary zone need (GBR) and implant placement | Other | 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. Receives: Procedure: guided bone regeneration (GBR). |
What is being measured
The primary outcome is the main question the study is designed to answer.
amount of bone gain
radiographic using cone beam computed tomography (CBCT)
Measured: 6 months postoperative
Secondary outcomes (1)
quality of bone regenerated
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.
Measured: 6 months after surgical procedure
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Dec 2023
- Study start10 Mar 2024
- Primary completion15 Feb 2026
- Study completion15 Sep 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (7)Papers the sponsor has linked to this study.
- Other trials for Horizontal Ridge DeficiencyStudies of the same condition, open and under way.
- More trials run by Cairo UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 10 participants (actual)
Sponsor and investigators
- Lead sponsor
- Cairo University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Rana Mohamed Sherif Abdel Mawgood, Cairo University
- Investigators
- Hesham El Hawary, Study director, Professor of Oral and Maxillofacial surgery, Cairo university
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06186232
- Sponsor's protocol ID
- OMFS 3310
- Status last verified
- Sep 2026
- First submitted
- 15 Dec 2023
- Last updated
- 24 Sep 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
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.
PubMed 29264297Benic 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.
PubMed 25123759Elgali 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.
PubMed 28833567Lee 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.
PubMed 27489841Fernandes 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.
PubMed 25093139Freitas 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.
PubMed 34970460AlSubaie 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.
PubMed 35656329
Study at a glance
From the registry record, last updated by the sponsor on 24 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation Of Bone Regenerated After Guided Bone Regenration (GBR) Using Customized 3D Printed Polymethylmethacrylate (PMMA) Membrane in Horizontally Deficient Maxillary Aesthetic Zone
- ClinicalTrials.gov ID
- NCT06186232
- Acronym / sponsor ID
- OMFS 3310
- Conditions
- Horizontal Ridge Deficiency
- Keywords
- polymethylmethacrylate
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 10 participants (actual)
- Lead sponsor
- Cairo UniversityUniversity, hospital or other
- Study start
- 10 Mar 2024 (actual)
- Primary completion
- 15 Feb 2026 (actual)
- Study completion
- 15 Sep 2026 (actual)
- First posted
- 29 Dec 2023 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Detailed description
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).
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| patient with horizontally deficient ridge in ethetic maxilary zone need (GBR) and implant placement | Other | Procedure: guided bone regeneration (GBR).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. |
Who may qualify
- Ages
- 18 to 50 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (6 listed)
- 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.
Key exclusion criteria (12 listed)
- 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.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| guided bone regeneration (GBR).Also: implant installation 6 months after (GBR)guided bone regeneration (GBR) using polymethylmethacrylate (PMMA) polymer as membrane. | Procedure or surgery | patient with horizontally deficient ridge in ethetic maxilary zone need (GBR) and implant placement |
Primary outcome
amount of bone gain
Time frame: 6 months postoperative
radiographic using cone beam computed tomography (CBCT)
1 secondary outcome
quality of bone regenerated
Time frame: 6 months after surgical procedure
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Sep 2026.
- Background: PubMed 29264297Khojasteh 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.
- Background: PubMed 25123759Benic 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.
- Background: PubMed 28833567Elgali 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.
- Background: PubMed 27489841Lee 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.
- Background: PubMed 25093139Fernandes 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.
- Background: PubMed 34970460Freitas 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.
- Background: PubMed 35656329AlSubaie 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.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Hesham El Hawary study director
Professor of Oral and Maxillofacial surgery, Cairo university
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing guided bone regeneration (GBR). in people with Horizontal Ridge Deficiency, run by Cairo University at 1 site in Egypt.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 24 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
amount of bone gain (time frame: 6 months postoperative). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06186232, which also lists 7 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Sep 2026.