Healing of Extraction SocketNCT02802436
The Impact of a Known Bioactive Agent on the Resolution of Alveolar Socket Preservation
A study testing Extraction with socket graft in people with Healing of Extraction Socket, run by Boston University at 1 site in United States.
Trial summary
The advent of endosseous implant restoration has driven an increasing need for alveolar bone preservation and/or augmentation strategies. Investigations have explored the physical scaffold effects of a wide variety of bone graft materials with each graft material offering a more or less attractive surface for bone… Read more about this study
- Who is it for?
- Ages 20 to 80 yearsHealthy volunteers can take part
- Conditions the study is for
- Healing of Extraction Socket
- What is being tested?
- Extraction with socket graft
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 0 participants
- Where
- 1 siteUnited States
- Study dates
- 3 Oct 2016to Jul 2018
- 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 20 to 80 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Patients will be selected from the pool of periodontal patients at BUSDM (Boston University School of Dental Medicine) who have been treatment planned for at least two extractions which will be atleast one tooth apart in either arch (maxilla or mandible) followed by delayed 3-4 months dental implant placement.
- Subjects will be in age group 20-80 years of age.
Who cannot join
- Patients with known systemic disorders affecting bone Example - Osteoporosis, Diabetes Mellitus, Hyperthyroidism, Arthritis, smokers and pregnant women will be excluded.
- Untreated acute infections at the surgical site
- Untreated malignant neoplasm(s) at the surgical site
- Patients with a known hypersensitivity to any product component (ß-TCP = Tri calcium phosphate or rhPDGF-BB = Platelet derived growth factor)
Trial locations and contacts
1 site in 1 country.
United States1 site
Henry M. Goldman School of Dental Medicine, Boston University
Boston, Massachusetts, 02118
About this study
The advent of endosseous implant restoration has driven an increasing need for alveolar bone preservation and/or augmentation strategies. Investigations have explored the physical scaffold effects of a wide variety of bone graft materials with each graft material offering a more or less attractive surface for bone deposition. The seeding of these scaffolds with biologically active material seeks to enhance the "osteoconductive" effect by influencing the temporal or sequential steps which result in the desired end product-new bone.
Alveolar socket grafts are a common example of these preservation techniques. They are an accepted procedure to maximize the retention of alveolar bone post extraction. They appear to act as a passive scaffold for clot retention and subsequent bone regeneration.
Read more
The current pilot research project explores addition of a known Bioactive Agent: Platelet Derived Growth Factor (PDGF) to test its impact on healing responses. Histomorphometric assessments will be utilized on microscopic slide material derived from cores trephined as the initial step in the preparation for placement of endosseous dental implants. Outcomes measured will include:
Clinical observation of healing response
Microscopic measures will be
- Measures of residual graft material
- New bone formation and new bone contact area with graft
- Measures of vascular content
- Osteoclast count
- Qualitative measures of other marrow components (Cells and relative fiber/ fat content, liner cell characteristics.)
Read the detailed description
The current pilot research project explores the addition of a known Bioactive Agent: Platelet Derived Growth Factor (PDGF) into the completed "socket graft" to test its impact on healing responses. Histomorphometric and qualitative assessments will be utilized on microscopic slide material derived from cores trephined as the initial step in the osteotomy preparation for placement of endosseous dental implants.
Design: Split mouth RCT (Randomized controlled trial) Graft Procedure: At time of extraction the site will be asked to rinse with 0.12% Chlorhexidine, and anesthetized with 2% lidocaine and 1/100,000 epinephrine. Extraction will be done as usual standard of care to preserve socket walls. Sites requiring socket wall repair at time of extraction will be excluded from study. Sockets will be measured at all 4 line angles for depth with the same periodontal probe, Buccal-Lingual dimension will be measured prior to graft placement. Graft material (mineralized cortical/cancellous Bone Powder 250-1000µ) will be used for both sites. Volume of graft used will be recorded. Both sites will be filled slightly below marginal bone level (1mm). Test site will be injected with Bioactive Agent. At 3 levels apical 1/3rd, middle 1/3rd and coronal 1/3rd. Control site will be injected with saline (or vehicle) at same levels. Occlusal orifice will be closed with Collagen plug adjusted for depth to meet free gingival margins and then sutured with 4-0 Polyglactin (Vicryl)
Post op care: Sites will be checked and photographed at 1 week, 2 weeks (sutures removed) and clinical photos taken to monitor clinical signs of inflammation and healing. A 3-month post op radiograph appointment will be made at the 2-week visit. Ct scan may be taken if prescribed by treatment plan/ prior to implant placement.
Implant/core acquisition at time of Implant placement: Clinical photographs will be taken. (Post graft radiograph already done at 3 months) Site will be opened with standard full thickness flap entry. After soft tissue reflection photo will be taken and implant site marked with a standardized round bur to ½ depth of bur (~ 0.5-1.0 mm). Sites requiring a 4, 5, or 6mm implant will have trephined core as first step in osteotomy (3.3mm OD-2-8mmID) Trephine will be centered over site mark and osteotomy and prepared to prescribed depth. The trephine core will be photographed with periodontal probe included for reference of length, apical end marked with India ink and then placed in 10% neutral buffered formalin (NBF) and labeled with patient name, date, record # and length of core. Details of implant placement will be recorded with size of implant and insertion torque in record.
Post-implant care: Standard of care post op sequence will be followed, once adequate healing period has elapsed healing cap that was screwed onto the implant is removed and replaced with appropriately shaped abutment. The entire procedure will be photographed and the usual post abutment radiograph will be taken at that time.
- Conditions
- Healing of Extraction Socket
- Being tested
- Extraction with socket graft
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Extraction with socket graftProcedure or surgery
Extraction will be done as usual standard of care to preserve socket walls. Sockets will be measured at all 4 line angles for depth with the same periodontal probe, Buccal-Lingual dimension will be measured prior to graft placement. Graft material (mineralized cortical/cancellous Bone Powder 250-1000µ) will be used for both sites. Volume of graft used will be recorded. Both sites will be filled slightly below marginal bone level (1mm). Test site will be injected with Bioactive Agent. At 3 levels apical 1/3rd, middle 1/3rd and coronal 1/3rd. Control site will be injected with saline (or vehicle) at same levels. Occlusal orifice will be closed with Collagen plug adjusted for depth to meet free gingival margins and then sutured with 4-0 PGA (Vicryl)
| Study group | Role | What they receive |
|---|---|---|
| Extraction with socket graft and GEM21 | Experimental | Intervention - Extraction will be done as usual standard of care to preserve socket walls. Graft material (mineralized cortical/cancellous Bone Powder 250-1000µ) will be used, site will be filled slightly below marginal bone level (1mm). Test site (active arm) will be injected with Bioactive Agent (PDGF - Platelet derived growth factor). At 3 levels apical 1/3rd, middle 1/3rd and coronal 1/3rd.
Bioactive agent - GEM21S (Growth factor enhanced matrix) Dosage - one cup containing 0.5 cc of ß-TCP particles (0.25 to 1.0 mm); and one syringe containing a solution of 0.5 mL rhPDGF-BB (0.3 mg/mL) Receives: Procedure: Extraction with socket graft |
| Extraction with socket graft | Other | Extraction will be done as usual standard of care to preserve socket walls. Graft material (mineralized cortical/cancellous Bone Powder 250-1000µ) will be used, site will be filled slightly below marginal bone level (1mm). Normal saline will be used and no growth factor to maintain the volume in control sites Receives: Procedure: Extraction with socket graft |
What is being measured
The primary outcome is the main question the study is designed to answer.
Implant/core acquisition at time of Implant placement
Site will be opened with standard full thickness flap entry. After soft tissue reflection photograph will be taken and implant site marked with a standardized round bur to ½ depth of bur (~ 0.5-1.0 mm). Sites requiring a 4, 5, or 6mm implant will have trephined core as first step in osteotomy (3.3mm OD-2-8mmID) Trephine will be centered over site mark and osteotomy and prepared to prescribed depth. The trephine core will be photographed with periodontal probe included for reference of length, apical end marked with India ink and then placed in 10% neutral buffered formalin (NBF) and labeled with patient name, date, record # and length of core. Details of implant placement will be recorded with size of implant and insertion torque in record.
Measured: 3 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Jun 2016 (estimated)
- Study start3 Oct 2016
- Primary completionJul 2018 (estimated)
- Study completionJul 2018 (estimated)
Why it stopped: Administrative changes precluded enrollment.
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Healing of Extraction SocketStudies of the same condition, open and under way.
- More trials run by Boston 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
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- Boston University
- Sponsor type
- University, hospital or other
- Collaborators
- OsteoHealth
- Responsible party
- Sponsor
- Investigators
- Sunny K Tilwani, BDS, Principal investigator, Boston University Dental SchoolAlbert Price, DMD, Study chair, Boston University Dental School
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02802436
- Sponsor's protocol ID
- H34663
- Status last verified
- Jul 2018
- First submitted
- 7 Jun 2016
- Last updated
- 5 Jul 2018
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes
Publications
Albrektsson T, Johansson C. Osteoinduction, osteoconduction and osseointegration. Eur Spine J. 2001 Oct;10 Suppl 2(Suppl 2):S96-101. doi: 10.1007/s005860100282.
PubMed 11716023Nevins M, Giannobile WV, McGuire MK, Kao RT, Mellonig JT, Hinrichs JE, McAllister BS, Murphy KS, McClain PK, Nevins ML, Paquette DW, Han TJ, Reddy MS, Lavin PT, Genco RJ, Lynch SE. Platelet-derived growth factor stimulates bone fill and rate of attachment level gain: results of a large multicenter randomized controlled trial. J Periodontol. 2005 Dec;76(12):2205-15. doi: 10.1902/jop.2005.76.12.2205.
PubMed 16332231Jayakumar A, Rajababu P, Rohini S, Butchibabu K, Naveen A, Reddy PK, Vidyasagar S, Satyanarayana D, Pavan Kumar S. Multi-centre, randomized clinical trial on the efficacy and safety of recombinant human platelet-derived growth factor with beta-tricalcium phosphate in human intra-osseous periodontal defects. J Clin Periodontol. 2011 Feb;38(2):163-72. doi: 10.1111/j.1600-051X.2010.01639.x. Epub 2010 Dec 6.
PubMed 21133980
Study at a glance
From the registry record, last updated by the sponsor on 5 Jul 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Impact of a Known Bioactive Agent on the Resolution of Alveolar Socket Preservation
- ClinicalTrials.gov ID
- NCT02802436
- Acronym / sponsor ID
- H34663
- Conditions
- Healing of Extraction Socket
- Study type
- Interventional
- Recruitment status
- WithdrawnReason stopped: Administrative changes precluded enrollment.
- Enrolment
- 0 participants (actual)
- Lead sponsor
- Boston UniversityUniversity, hospital or other
- Collaborators
- OsteoHealth
- Study start
- 3 Oct 2016 (actual)
- Primary completion
- Jul 2018 (estimated)
- Study completion
- Jul 2018 (estimated)
- First posted
- 16 Jun 2016 (estimated)
- 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 advent of endosseous implant restoration has driven an increasing need for alveolar bone preservation and/or augmentation strategies. Investigations have explored the physical scaffold effects of a wide variety of bone graft materials with each graft material offering a more or less attractive surface for bone deposition. The seeding of these scaffolds with biologically active material seeks to enhance the "osteoconductive" effect by influencing the temporal or sequential steps which result in the desired end product-new bone.
Alveolar socket grafts are a common example of these preservation techniques. They are an accepted procedure to maximize the retention of alveolar bone post extraction. They appear to act as a passive scaffold for clot retention and subsequent bone regeneration.
The current pilot research project explores addition of a known Bioactive Agent: Platelet Derived Growth Factor (PDGF) to test its impact on healing responses. Histomorphometric assessments will be utilized on microscopic slide material derived from cores trephined as the initial step in the preparation for placement of endosseous dental implants. Outcomes measured will include:
Clinical observation of healing response
Microscopic measures will be
- Measures of residual graft material
- New bone formation and new bone contact area with graft
- Measures of vascular content
- Osteoclast count
- Qualitative measures of other marrow components (Cells and relative fiber/ fat content, liner cell characteristics.)
Detailed description
The current pilot research project explores the addition of a known Bioactive Agent: Platelet Derived Growth Factor (PDGF) into the completed "socket graft" to test its impact on healing responses. Histomorphometric and qualitative assessments will be utilized on microscopic slide material derived from cores trephined as the initial step in the osteotomy preparation for placement of endosseous dental implants.
Design: Split mouth RCT (Randomized controlled trial) Graft Procedure: At time of extraction the site will be asked to rinse with 0.12% Chlorhexidine, and anesthetized with 2% lidocaine and 1/100,000 epinephrine. Extraction will be done as usual standard of care to preserve socket walls. Sites requiring socket wall repair at time of extraction will be excluded from study. Sockets will be measured at all 4 line angles for depth with the same periodontal probe, Buccal-Lingual dimension will be measured prior to graft placement. Graft material (mineralized cortical/cancellous Bone Powder 250-1000µ) will be used for both sites. Volume of graft used will be recorded. Both sites will be filled slightly below marginal bone level (1mm). Test site will be injected with Bioactive Agent. At 3 levels apical 1/3rd, middle 1/3rd and coronal 1/3rd. Control site will be injected with saline (or vehicle) at same levels. Occlusal orifice will be closed with Collagen plug adjusted for depth to meet free gingival margins and then sutured with 4-0 Polyglactin (Vicryl)
Post op care: Sites will be checked and photographed at 1 week, 2 weeks (sutures removed) and clinical photos taken to monitor clinical signs of inflammation and healing. A 3-month post op radiograph appointment will be made at the 2-week visit. Ct scan may be taken if prescribed by treatment plan/ prior to implant placement.
Implant/core acquisition at time of Implant placement: Clinical photographs will be taken. (Post graft radiograph already done at 3 months) Site will be opened with standard full thickness flap entry. After soft tissue reflection photo will be taken and implant site marked with a standardized round bur to ½ depth of bur (~ 0.5-1.0 mm). Sites requiring a 4, 5, or 6mm implant will have trephined core as first step in osteotomy (3.3mm OD-2-8mmID) Trephine will be centered over site mark and osteotomy and prepared to prescribed depth. The trephine core will be photographed with periodontal probe included for reference of length, apical end marked with India ink and then placed in 10% neutral buffered formalin (NBF) and labeled with patient name, date, record # and length of core. Details of implant placement will be recorded with size of implant and insertion torque in record.
Post-implant care: Standard of care post op sequence will be followed, once adequate healing period has elapsed healing cap that was screwed onto the implant is removed and replaced with appropriately shaped abutment. The entire procedure will be photographed and the usual post abutment radiograph will be taken at that time.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind (participant, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Extraction with socket graft and GEM21 | Experimental | Procedure: Extraction with socket graftIntervention - Extraction will be done as usual standard of care to preserve socket walls. Graft material (mineralized cortical/cancellous Bone Powder 250-1000µ) will be used, site will be filled slightly below marginal bone level (1mm). Test site (active arm) will be injected with Bioactive Agent (PDGF - Platelet derived growth factor). At 3 levels apical 1/3rd, middle 1/3rd and coronal 1/3rd. Bioactive agent - GEM21S (Growth factor enhanced matrix) Dosage - one cup containing 0.5 cc of ß-TCP particles (0.25 to 1.0 mm); and one syringe containing a solution of 0.5 mL rhPDGF-BB (0.3 mg/mL) |
| Extraction with socket graft | Other | Procedure: Extraction with socket graftExtraction will be done as usual standard of care to preserve socket walls. Graft material (mineralized cortical/cancellous Bone Powder 250-1000µ) will be used, site will be filled slightly below marginal bone level (1mm). Normal saline will be used and no growth factor to maintain the volume in control sites |
Who may qualify
- Ages
- 20 to 80 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Patients will be selected from the pool of periodontal patients at BUSDM (Boston University School of Dental Medicine) who have been treatment planned for at least two extractions which will be atleast one tooth apart in either arch (maxilla or mandible) followed by delayed 3-4 months dental implant placement.
- Subjects will be in age group 20-80 years of age.
Key exclusion criteria (4 listed)
- Patients with known systemic disorders affecting bone Example - Osteoporosis, Diabetes Mellitus, Hyperthyroidism, Arthritis, smokers and pregnant women will be excluded.
- Untreated acute infections at the surgical site
- Untreated malignant neoplasm(s) at the surgical site
- Patients with a known hypersensitivity to any product component (ß-TCP = Tri calcium phosphate or rhPDGF-BB = Platelet derived growth factor)
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 |
|---|---|---|
| Extraction with socket graftExtraction will be done as usual standard of care to preserve socket walls. Sockets will be measured at all 4 line angles for depth with the same periodontal probe, Buccal-Lingual dimension will be measured prior to graft placement. Graft material (mineralized cortical/cancellous Bone Powder 250-1000µ) will be used for both sites. Volume of graft used will be recorded. Both sites will be filled slightly below marginal bone level (1mm). Test site will be injected with Bioactive Agent. At 3 levels apical 1/3rd, middle 1/3rd and coronal 1/3rd. Control site will be injected with saline (or vehicle) at same levels. Occlusal orifice will be closed with Collagen plug adjusted for depth to meet free gingival margins and then sutured with 4-0 PGA (Vicryl) | Procedure or surgery | Extraction with socket graft, Extraction with socket graft and GEM21 |
Primary outcome
Implant/core acquisition at time of Implant placement
Time frame: 3 months
Site will be opened with standard full thickness flap entry. After soft tissue reflection photograph will be taken and implant site marked with a standardized round bur to ½ depth of bur (~ 0.5-1.0 mm). Sites requiring a 4, 5, or 6mm implant will have trephined core as first step in osteotomy (3.3mm OD-2-8mmID) Trephine will be centered over site mark and osteotomy and prepared to prescribed depth. The trephine core will be photographed with periodontal probe included for reference of length, apical end marked with India ink and then placed in 10% neutral buffered formalin (NBF) and labeled with patient name, date, record # and length of core. Details of implant placement will be recorded with size of implant and insertion torque in record.
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Jul 2018.
- Results publication: PubMed 11716023Albrektsson T, Johansson C. Osteoinduction, osteoconduction and osseointegration. Eur Spine J. 2001 Oct;10 Suppl 2(Suppl 2):S96-101. doi: 10.1007/s005860100282.
- Results publication: PubMed 16332231Nevins M, Giannobile WV, McGuire MK, Kao RT, Mellonig JT, Hinrichs JE, McAllister BS, Murphy KS, McClain PK, Nevins ML, Paquette DW, Han TJ, Reddy MS, Lavin PT, Genco RJ, Lynch SE. Platelet-derived growth factor stimulates bone fill and rate of attachment level gain: results of a large multicenter randomized controlled trial. J Periodontol. 2005 Dec;76(12):2205-15. doi: 10.1902/jop.2005.76.12.2205.
- Results publication: PubMed 21133980Jayakumar A, Rajababu P, Rohini S, Butchibabu K, Naveen A, Reddy PK, Vidyasagar S, Satyanarayana D, Pavan Kumar S. Multi-centre, randomized clinical trial on the efficacy and safety of recombinant human platelet-derived growth factor with beta-tricalcium phosphate in human intra-osseous periodontal defects. J Clin Periodontol. 2011 Feb;38(2):163-72. doi: 10.1111/j.1600-051X.2010.01639.x. Epub 2010 Dec 6.
- Individual participant dataSharing planned: Yes
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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.
Sunny K Tilwani, BDS principal investigator
Boston University Dental School
Albert Price, DMD study chair
Boston University Dental School
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Extraction with socket graft in people with Healing of Extraction Socket, run by Boston University at 1 site in United States.
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 2 inclusion and 4 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: withdrawn, as of the sponsor's last update on 5 Jul 2018. 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 United States. 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 was withdrawn before enrolling participants, so there are no results.
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?
Implant/core acquisition at time of Implant placement (time frame: 3 months). 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 NCT02802436, which also lists 3 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 5 Jul 2018.