Alveolar Ridge AugmentationPhase 1/2NCT07879495
Alveolar Ridge Preservation (ARP) Study Using Alloplastic Biomaterial and a Resorbable Synthetic Membrane. A Digital Workflow (CBCT/Scanner) Evaluates Hard and Soft Tissue Volumetric Changes at 4 Months, Validating Support for the Gingival Phenotype and Buccal Bone Plate.
A Phase 1/2 study testing Alveolar Ridge Preservation using a synthetic alloplastic bone substitute and a resorbable polymer membrane and Minimally invasive flapless tooth extraction followed by unassisted spontaneous healing in people with Alveolar Ridge Augmentation and Bone Substitutes, run by Universidad Católica San Antonio de Murcia.
Trial summary
The dimensional collapse of the alveolar ridge following tooth extraction represents a critical challenge for implant rehabilitation. This research proposes an alveolar ridge preservation (ARP) protocol based on the combination of a slow-resorbing alloplastic synthetic biomaterial and a polymer-based resorbable… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Alveolar Ridge Augmentation, Bone Substitutes, Guided Tissue Regeneration, Periodontal
- What is being tested?
- Alveolar Ridge Preservation using a synthetic alloplastic bone substitute and a resorbable polymer membrane and Minimally invasive flapless tooth extraction followed by unassisted spontaneous healing
- Type of treatment
- Pill or oral medicine, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 28 participants
- Where
- No sites listed yet
- Study dates
- Nov 2026to Oct 2028
- Phase
- Phase 1/2
- Are there results?
- Not yet: the study is under way
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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adult patients (>18 years of age) with full cognitive capacity to understand and sign the Informed Consent approved by the UCAM Ethics Committee (in accordance with the 2022-23 Regulation).
- Presence of at least one non-restorable mandibular premolar (first or second) or first mandibular molar with a clear indication for extraction and subsequent implant-supported prosthetic rehabilitation.
- Buccal Bone Plate Integrity: Clinically intact buccal bone wall following baseline clinical examination and tomographic confirmation (T0 CBCT), presenting a continuous residual thickness of at least 1 mm, with no evidence of bone dehiscences or fenestrations prior to surgery (Type 1 sockets according to the Elian / Juodzbalys classification).
- Absence of Active Infectious Processes: Surgical site free of signs of acute or exacerbated chronic infection. This excludes the presence of active suppuration, productive fistulas, periodontal abscesses, or extensive osteolytic periapical lesions (>2 mm in radiographic diameter) that could alter tissue pH or destabilize the biomaterial.
- Adequate or stabilized general periodontal health, defined by a Full-Mouth Plaque Score (FMPS) ≤ 20% and Full-Mouth Bleeding Score (FMBS) ≤ 20%.
Who cannot join
- Patients with uncontrolled systemic medical conditions that compromise bone or mucosal healing (e.g., Diabetes Mellitus with HbA1c >7%, severe calcium metabolism disorders, severe hepatopathies, or nephropathies).
- Patients undergoing active treatment with drugs that alter bone remodeling, such as systemic bisphosphonates (oral or intravenous), denosumab, or prolonged systemic corticosteroid therapies.
- History of previous radiotherapy in the head and neck region, or active medical oncology.
- Heavy smokers (>10 cigarettes per day) due to the demonstrated deleterious impact of nicotine on angiogenesis and gingival collagen maturation, or substance abuse.
- Pregnant or actively lactating women at the time of inclusion.
- Any defect, intraoperative fracture, or unforeseen lesion detected in the buccal bone plate during the surgical extraction maneuver that compromises the baseline condition of alveolar wall integrity.
- Patient inability to attend the rigorous follow-up appointments scheduled at 4 months, or severe claustrophobia preventing the acquisition of records via CBCT or intraoral scanning with the CS 3800.
About this study
Official title: EVALUACIÓN MEDIANTE FLUJO DIGITAL DEL IMPACTO DE LAS TERAPIAS DE PRESERVACIÓN ALVEOLAR EN LA ESTABILIDAD DIMENSIONAL DE LOS TEJIDOS
The dimensional collapse of the alveolar ridge following tooth extraction represents a critical challenge for implant rehabilitation. This research proposes an alveolar ridge preservation (ARP) protocol based on the combination of a slow-resorbing alloplastic synthetic biomaterial and a polymer-based resorbable synthetic membrane. Through a digital workflow integrating cone-beam computed tomography (CBCT) and intraoral scanning (Carestream 3800), volumetric changes in hard and soft tissues will be monitored. The study will compare baseline conditions with outcomes at 4 months of healing, analyzing whether the use of the membrane ensures adequate support for the gingival phenotype and minimizes buccal bone plate resorption.
- Conditions
- Alveolar Ridge Augmentation, Bone Substitutes, Guided Tissue Regeneration, Periodontal, Cone-Beam Computed Tomography, Bone Resorption
- Being tested
- Alveolar Ridge Preservation using a synthetic alloplastic bone substitute and a resorbable polymer membrane, Minimally invasive flapless tooth extraction followed by unassisted spontaneous healing
- Medical subject headings
- Bone Resorption
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Alveolar Ridge Preservation using a synthetic alloplastic bone substitute and a resorbable polymer membraneProcedure or surgery
This experimental intervention is distinguished by a fully synthetic, animal-free grafting protocol. Following a strictly flapless tooth extraction to preserve periosteal blood supply to the buccal bundle bone, the socket is grafted with a slow-resorbing synthetic alloplastic bone substitute, designed to act as a long-term space maintainer rather than a rapidly turning-over material. Crucially, the graft is covered by a polymer-based resorbable synthetic membrane, distinguishing it from standard protocols utilizing native or cross-linked collagen. The membrane is stabilized using non-resorbable cross-mattress sutures. To prevent distortion of the mucogingival junction, no periosteal releasing incisions are performed, and the site is left to heal by secondary intention with the membrane intentionally left exposed to the oral environment
Minimally invasive flapless tooth extraction followed by unassisted spontaneous healingProcedure or surgery
This control intervention is strictly distinguished by the complete absence of any ridge preservation biomaterials. It represents the baseline dimensional collapse of the alveolar ridge. Following a minimally invasive, flapless tooth extraction identical to the experimental arm, the socket is vigorously debrided but left unassisted to heal via a natural blood clot. To distinguish this true negative control from active comparators, no hemostatic agents (e.g., oxidized regenerated cellulose or gelatin sponges) are placed within the alveolus. Sutures are applied strictly to stabilize the existing gingival margins and secure the coagulum, allowing physiological secondary intention healing without any artificial space maintenance
| Study group | Role | What they receive |
|---|---|---|
| Experimental: Alveolar Ridge Preservation (ARP) utilizing a Slow-Resorbing Synthetic Alloplast and a | Experimental | Following atraumatic tooth extraction and rigorous socket debridement, the alveolar defect will be grafted with a slow-resorbing synthetic alloplastic bone substitute. A resorbable polymer-based synthetic barrier membrane will be adapted over the graft material. The surgical site will be managed via a [flapped / flapless] approach and stabilizing sutures will be placed to allow for [primary / secondary] intention healing. No loading or prosthetic provisionalization will be applied over the grafted socket during the 4-month healing period. Receives: Procedure: Alveolar Ridge Preservation using a synthetic alloplastic bone substitute and a resorbable polymer membrane |
| No Intervention: Unassisted Spontaneous Healing (Natural Blood Clot) | Other | Following atraumatic tooth extraction and rigorous socket debridement, the alveolar defect will be left to heal spontaneously without the application of any bone graft material or barrier membrane. A natural blood clot will be allowed to form and stabilize within the socket. The surgical site will be managed strictly via a flapless approach, with stabilizing sutures placed only if necessary to secure the coagulum and achieve hemostasis. The socket will undergo unassisted secondary intention healing during the 4-month observation period prior to implant placement evaluation. Receives: Procedure: Minimally invasive flapless tooth extraction followed by unassisted spontaneous healing |
What is being measured
The primary outcome is the main question the study is designed to answer.
Absolute Volumetric Change of the Alveolar Ridge Contour
The primary outcome is the total volumetric alteration of the alveolar ridge, encompassing combined hard and soft tissue dimensional changes. This will be quantified in cubic millimeters (mm^3) through a digital superimposition protocol. Baseline (Day 0) intraoral surface scans (STL) and Cone-Beam Computed Tomography (CBCT) DICOM files will be spatially aligned with 4-month (T1) postoperative STL and CBCT datasets using specialized image analysis software. A standardized Region of Interest (ROI) will be established using stable anatomical landmarks (e.g., adjacent teeth, hard palate) to calculate the absolute volume loss or gain
Measured: Baseline (Day 0, immediately post-extraction) and at 4 months post-operative.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Oct 2026
- Study startNov 2026 (estimated)
- Primary completionJul 2028 (estimated)
- Study completionOct 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Alveolar Ridge AugmentationStudies of the same condition, open and under way.
- 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 1/2
- Primary purpose
- Health services research
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 28 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Universidad Católica San Antonio de Murcia
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Carlos Pérez-Albacete Martínez, Universidad Católica San Antonio de Murcia
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07879495
- Sponsor's protocol ID
- CE062612
- Status last verified
- Oct 2026
- First submitted
- 10 Oct 2026
- Last updated
- 16 Oct 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 16 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- EVALUACIÓN MEDIANTE FLUJO DIGITAL DEL IMPACTO DE LAS TERAPIAS DE PRESERVACIÓN ALVEOLAR EN LA ESTABILIDAD DIMENSIONAL DE LOS TEJIDOS
- ClinicalTrials.gov ID
- NCT07879495
- Acronym / sponsor ID
- CE062612
- Conditions
- Alveolar Ridge Augmentation, Bone Substitutes, Guided Tissue Regeneration, Periodontal, Cone-Beam Computed Tomography, Bone Resorption
- Phase
- Phase 1/2
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 28 participants (estimated)
- Lead sponsor
- Universidad Católica San Antonio de MurciaUniversity, hospital or other
- Study start
- Nov 2026 (estimated)
- Primary completion
- Jul 2028 (estimated)
- Study completion
- Oct 2028 (estimated)
- First posted
- 16 Oct 2026 (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.
The dimensional collapse of the alveolar ridge following tooth extraction represents a critical challenge for implant rehabilitation. This research proposes an alveolar ridge preservation (ARP) protocol based on the combination of a slow-resorbing alloplastic synthetic biomaterial and a polymer-based resorbable synthetic membrane. Through a digital workflow integrating cone-beam computed tomography (CBCT) and intraoral scanning (Carestream 3800), volumetric changes in hard and soft tissues will be monitored. The study will compare baseline conditions with outcomes at 4 months of healing, analyzing whether the use of the membrane ensures adequate support for the gingival phenotype and minimizes buccal bone plate resorption.
Study design
- Primary purpose
- Health services research
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Experimental: Alveolar Ridge Preservation (ARP) utilizing a Slow-Resorbing Synthetic Alloplast and a | Experimental | Procedure: Alveolar Ridge Preservation using a synthetic alloplastic bone substitute and a resorbable polymer membraneFollowing atraumatic tooth extraction and rigorous socket debridement, the alveolar defect will be grafted with a slow-resorbing synthetic alloplastic bone substitute. A resorbable polymer-based synthetic barrier membrane will be adapted over the graft material. The surgical site will be managed via a [flapped / flapless] approach and stabilizing sutures will be placed to allow for [primary / secondary] intention healing. No loading or prosthetic provisionalization will be applied over the grafted socket during the 4-month healing period. |
| No Intervention: Unassisted Spontaneous Healing (Natural Blood Clot) | Other | Procedure: Minimally invasive flapless tooth extraction followed by unassisted spontaneous healingFollowing atraumatic tooth extraction and rigorous socket debridement, the alveolar defect will be left to heal spontaneously without the application of any bone graft material or barrier membrane. A natural blood clot will be allowed to form and stabilize within the socket. The surgical site will be managed strictly via a flapless approach, with stabilizing sutures placed only if necessary to secure the coagulum and achieve hemostasis. The socket will undergo unassisted secondary intention healing during the 4-month observation period prior to implant placement evaluation. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- Adult patients (>18 years of age) with full cognitive capacity to understand and sign the Informed Consent approved by the UCAM Ethics Committee (in accordance with the 2022-23 Regulation).
- Presence of at least one non-restorable mandibular premolar (first or second) or first mandibular molar with a clear indication for extraction and subsequent implant-supported prosthetic rehabilitation.
- Buccal Bone Plate Integrity: Clinically intact buccal bone wall following baseline clinical examination and tomographic confirmation (T0 CBCT), presenting a continuous residual thickness of at least 1 mm, with no evidence of bone dehiscences or fenestrations prior to surgery (Type 1 sockets according to the Elian / Juodzbalys classification).
- Absence of Active Infectious Processes: Surgical site free of signs of acute or exacerbated chronic infection. This excludes the presence of active suppuration, productive fistulas, periodontal abscesses, or extensive osteolytic periapical lesions (>2 mm in radiographic diameter) that could alter tissue pH or destabilize the biomaterial.
- Adequate or stabilized general periodontal health, defined by a Full-Mouth Plaque Score (FMPS) ≤ 20% and Full-Mouth Bleeding Score (FMBS) ≤ 20%.
Key exclusion criteria (7 listed)
- Patients with uncontrolled systemic medical conditions that compromise bone or mucosal healing (e.g., Diabetes Mellitus with HbA1c >7%, severe calcium metabolism disorders, severe hepatopathies, or nephropathies).
- Patients undergoing active treatment with drugs that alter bone remodeling, such as systemic bisphosphonates (oral or intravenous), denosumab, or prolonged systemic corticosteroid therapies.
- History of previous radiotherapy in the head and neck region, or active medical oncology.
- Heavy smokers (>10 cigarettes per day) due to the demonstrated deleterious impact of nicotine on angiogenesis and gingival collagen maturation, or substance abuse.
- Pregnant or actively lactating women at the time of inclusion.
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 |
|---|---|---|
| Alveolar Ridge Preservation using a synthetic alloplastic bone substitute and a resorbable polymer membraneThis experimental intervention is distinguished by a fully synthetic, animal-free grafting protocol. Following a strictly flapless tooth extraction to preserve periosteal blood supply to the buccal bundle bone, the socket is grafted with a slow-resorbing synthetic alloplastic bone substitute, designed to act as a long-term space maintainer rather than a rapidly turning-over material. Crucially, the graft is covered by a polymer-based resorbable synthetic membrane, distinguishing it from standard protocols utilizing native or cross-linked collagen. The membrane is stabilized using non-resorbable cross-mattress sutures. To prevent distortion of the mucogingival junction, no periosteal releasing incisions are performed, and the site is left to heal by secondary intention with the membrane intentionally left exposed to the oral environment | Procedure or surgery | Experimental: Alveolar Ridge Preservation (ARP) utilizing a Slow-Resorbing Synthetic Alloplast and a |
| Minimally invasive flapless tooth extraction followed by unassisted spontaneous healingThis control intervention is strictly distinguished by the complete absence of any ridge preservation biomaterials. It represents the baseline dimensional collapse of the alveolar ridge. Following a minimally invasive, flapless tooth extraction identical to the experimental arm, the socket is vigorously debrided but left unassisted to heal via a natural blood clot. To distinguish this true negative control from active comparators, no hemostatic agents (e.g., oxidized regenerated cellulose or gelatin sponges) are placed within the alveolus. Sutures are applied strictly to stabilize the existing gingival margins and secure the coagulum, allowing physiological secondary intention healing without any artificial space maintenance | Procedure or surgery | No Intervention: Unassisted Spontaneous Healing (Natural Blood Clot) |
Primary outcome
Absolute Volumetric Change of the Alveolar Ridge Contour
Time frame: Baseline (Day 0, immediately post-extraction) and at 4 months post-operative.
The primary outcome is the total volumetric alteration of the alveolar ridge, encompassing combined hard and soft tissue dimensional changes. This will be quantified in cubic millimeters (mm^3) through a digital superimposition protocol. Baseline (Day 0) intraoral surface scans (STL) and Cone-Beam Computed Tomography (CBCT) DICOM files will be spatially aligned with 4-month (T1) postoperative STL and CBCT datasets using specialized image analysis software. A standardized Region of Interest (ROI) will be established using stable anatomical landmarks (e.g., adjacent teeth, hard palate) to calculate the absolute volume loss or gain
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 16 Oct 2026.
- Individual participant dataSharing planned: Undecided
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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.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A Phase 1/2 study testing Alveolar Ridge Preservation using a synthetic alloplastic bone substitute and a resorbable polymer membrane and Minimally invasive flapless tooth extraction followed by unassisted spontaneous healing in people with Alveolar Ridge Augmentation and Bone Substitutes, run by Universidad Católica San Antonio de Murcia.
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 5 inclusion and 7 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: opening soon, as of the sponsor's last update on 16 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
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.
What does this combined phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
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?
Absolute Volumetric Change of the Alveolar Ridge Contour (time frame: Baseline (Day 0, immediately post-extraction) and at 4 months post-operative.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 16 Oct 2026.