<clinical_study>
  <!-- This xml conforms to an XML Schema at:
    https://clinicaltrials.gov/ct2/html/images/info/public.xsd -->
  <required_header>
    <download_date>ClinicalTrials.gov processed this data on September 20, 2023</download_date>
    <link_text>Link to the current ClinicalTrials.gov record.</link_text>
    <url>https://clinicaltrials.gov/ct2/show/NCT03763617</url>
  </required_header>
  <id_info>
    <org_study_id>PI2018</org_study_id>
    <nct_id>NCT03763617</nct_id>
  </id_info>
  <brief_title>Periosteal Inhibition Technique for Ridge Preservation A Prospective Study</brief_title>
  <acronym>PI</acronym>
  <official_title>Periosteal Inhibition Technique for Ridge Preservation A Prospective Study</official_title>
  <sponsors>
    <lead_sponsor>
      <agency>Clinique Dentaire et d'implantologie Dr.Vinh Nguyen</agency>
      <agency_class>Other</agency_class>
    </lead_sponsor>
    <collaborator>
      <agency>Goethe University</agency>
      <agency_class>Other</agency_class>
    </collaborator>
  </sponsors>
  <source>Clinique Dentaire et d'implantologie Dr.Vinh Nguyen</source>
  <oversight_info>
    <has_dmc>Yes</has_dmc>
    <is_fda_regulated_drug>No</is_fda_regulated_drug>
    <is_fda_regulated_device>No</is_fda_regulated_device>
  </oversight_info>
  <brief_summary>
    <textblock>
      The efficacy of the Periosteal Inhibition technique for socket preservation is studies&#xD;
      against a control group in which the extraction sockets are allowed to heal without a socket&#xD;
      preservation procedure.&#xD;
    </textblock>
  </brief_summary>
  <detailed_description>
    <textblock>
      Socket preservation procedures have been shown to significantly reduce the loss of ridge&#xD;
      dimension of an extraction socket. These procedures involve filling the empty socket with a&#xD;
      bone graft material, which, serves as scaffold to limit horizontal and vertical ridge&#xD;
      alterations. In order to contain the graft material, an occlusive barrier such as an&#xD;
      autogenous soft tissue graft, resorbable or non-resorbable membrane, is often required. As&#xD;
      yet, no one socket preservation technique has been proven superior to another, and none have&#xD;
      proven totally effective in preserving ridge morphology. A net reduction of 1.5 mm in ridge&#xD;
      width and 0.5 mm in ridge height is often observed after socket preservation procedures,&#xD;
      which may necessitate additional hard or soft tissue augmentation to fully restore the ridge&#xD;
      dimension.&#xD;
&#xD;
      In an animal histologic study in 2005, Araujo and Lindhe demonstrated that trauma and loss of&#xD;
      periodontal ligament triggered an osteoclastic activity causing loss of bundle bone and&#xD;
      modeling of the cortical bone plate. Osteoclasts are multi-nucleated cells that are&#xD;
      responsible for bone resorption and are found on the outer layer of bone, beneath the&#xD;
      periosteum. Osteoclasts are thought to be derived from pluripotent hematopoietic stem cells.&#xD;
      When stimulated, these mononuclear precursors, the smallest of which is 9.5 microns in&#xD;
      diameter, proliferate and attach to the bone surface to be resorbed, and only then fuse to&#xD;
      form large mature multinucleated osteoclasts.&#xD;
&#xD;
      High-density polytetrafluoroethylene (d-ptfe) membranes have been used in socket preservation&#xD;
      procedures as an occlusive barrier to contain the bone graft&#xD;
      material.Polytetrafluoroethylene, a stable polymer and highly biocompatible, has a membrane&#xD;
      porosity of less than 0.3 microns. It is impervious to bacteria and thus is recommended for a&#xD;
      socket preservation technique, where a membrane is intentionally exposed.&#xD;
&#xD;
      In the present study, a high-density polytetrafluoroethylene (d-ptfe) membrane is placed&#xD;
      between the periosteum and the buccal bone plate of an extraction socket where it will stay&#xD;
      for a duration of 4 months, the time needed for the completion of bone forming within the&#xD;
      socket. The goal of the non-resorbable d-ptfe membrane is to prevent the migration of&#xD;
      precursor cells to the bone surface and thus their fusion to form osteoclast. The authors&#xD;
      hypothesize that the passage of the precursor cells from the periosteum to the bone surface&#xD;
      is inhibited by the small-diameter pores in the non-resorbable d-ptfe membrane. Osteolytic&#xD;
      activity on the outer surface of the socket is thereby prevented as the precursor cells&#xD;
      cannot form osteoclasts. The author coins the term &quot;Periosteal Inhibition technique&quot; for this&#xD;
      socket preservation procedure.The study will compare dimension changes between extraction&#xD;
      socket treated using the Periosteal Inhibition technique and those allowed to heal without a&#xD;
      socket preservation procedure.&#xD;
    </textblock>
  </detailed_description>
  <overall_status>Unknown status</overall_status>
  <last_known_status>Not yet recruiting</last_known_status>
  <start_date type="Anticipated">December 15, 2018</start_date>
  <completion_date type="Anticipated">December 31, 2020</completion_date>
  <primary_completion_date type="Anticipated">December 31, 2020</primary_completion_date>
  <phase>N/A</phase>
  <study_type>Interventional</study_type>
  <has_expanded_access>No</has_expanded_access>
  <study_design_info>
    <allocation>Randomized</allocation>
    <intervention_model>Parallel Assignment</intervention_model>
    <intervention_model_description>A d-ptfe membrane is placed between the buccal bone and periosteum of an extraction socket to prevent the precursors of the bone resorbing cells (osteoclasts) from adhering to the bone surface.</intervention_model_description>
    <primary_purpose>Prevention</primary_purpose>
    <masking>Double (Participant, Investigator)</masking>
  </study_design_info>
  <primary_outcome>
    <measure>Ridge widths</measure>
    <time_frame>0 hour and 4 months</time_frame>
    <description>Bucco-lingual ridge dimensions at the midline is measured at 3mm and 5mm apical to the gingival margin, at the time of extraction intra-op and 4 months post-extraction, using a acrylic template for repeatable measurements.</description>
  </primary_outcome>
  <primary_outcome>
    <measure>Change in Ridge widths on the buccal and lingual aspects</measure>
    <time_frame>0 hour and 4 months</time_frame>
    <description>Buccal and lingual ridge dimension change at the midline is measured at 3mm and 5mm apical to the gingival margin, at the time of extraction and 4 months post-extraction, using a acrylic template for repeatable measurements.</description>
  </primary_outcome>
  <primary_outcome>
    <measure>Change in Ridge heights</measure>
    <time_frame>0 hour and 4 months</time_frame>
    <description>Change in Ridge bone heights at messiah and distal interproximal, mid-buccal and mid-lingual aspects.</description>
  </primary_outcome>
  <secondary_outcome>
    <measure>Bone plate thickness</measure>
    <time_frame>0 hour</time_frame>
    <description>Marginal buccal and lingual bone plate thickness</description>
  </secondary_outcome>
  <secondary_outcome>
    <measure>Keratinized mucosa</measure>
    <time_frame>0 hour and 4 months</time_frame>
    <description>Width of keratinized mucosa over the ridge</description>
  </secondary_outcome>
  <other_outcome>
    <measure>Complications</measure>
    <time_frame>1 month, 2 months, 3 months and 4 months</time_frame>
    <description>To assess complication rate of the procedure.</description>
  </other_outcome>
  <number_of_arms>2</number_of_arms>
  <enrollment type="Anticipated">40</enrollment>
  <condition>Ridge Deficency</condition>
  <arm_group>
    <arm_group_label>Test group</arm_group_label>
    <arm_group_type>Active Comparator</arm_group_type>
    <description>A d-ptfe membrane will be placed between the buccal bone and periosteum of an extraction socket during a 4 months healing time before it is surgically removed.</description>
  </arm_group>
  <arm_group>
    <arm_group_label>Control group</arm_group_label>
    <arm_group_type>No Intervention</arm_group_type>
    <description>The extraction socket will be left to heal naturally without a socket preservation intervention.</description>
  </arm_group>
  <intervention>
    <intervention_type>Device</intervention_type>
    <intervention_name>d-ptfe membrane</intervention_name>
    <description>Socket preservation using d-ptfe membrane to inhibit the formation of osteoclasts</description>
    <arm_group_label>Test group</arm_group_label>
  </intervention>
  <eligibility>
    <criteria>
      <textblock>
        Inclusion Criteria:&#xD;
&#xD;
          -  At least 22 years of age&#xD;
&#xD;
          -  Systemically healthy&#xD;
&#xD;
          -  An extraction of one non-salvageable molar or premolar tooth is indicated. Adjacent&#xD;
             teeth must be present to support the measuring template.&#xD;
&#xD;
          -  Demonstrated ability to maintain goodoral hygiene&#xD;
&#xD;
          -  Willingness and ability to commit to follow-up&#xD;
&#xD;
          -  Able to understand study procedure and provide signed informed consent.&#xD;
&#xD;
        Exclusion Criteria:&#xD;
&#xD;
          -  Extensive damaged buccal or lingual bone plate&#xD;
&#xD;
          -  Extreme alveolar ridge atrophy&#xD;
&#xD;
          -  Extensive vertical bone loss&#xD;
&#xD;
          -  Active infection at the extraction site&#xD;
&#xD;
          -  Uncontrolled periodontal disease.&#xD;
&#xD;
          -  Recent febrile illness (within 6 months) that precludes or delays participation&#xD;
&#xD;
          -  Severe renal or liver diseases&#xD;
&#xD;
          -  History of radiotherapy of the head and neck region&#xD;
&#xD;
          -  Chemotherapy for treatment of malignant tumors at the time of the study.&#xD;
&#xD;
          -  Immuno-compromised patients&#xD;
&#xD;
          -  Patients on IV bisphosphonates or on long term oral bisphosphonates for more than 3&#xD;
             years.&#xD;
&#xD;
          -  Use of disallowed concomitant medications.&#xD;
&#xD;
          -  Pregnancy or intending to conceive during the course of the Study.&#xD;
      </textblock>
    </criteria>
    <gender>All</gender>
    <minimum_age>22 Years</minimum_age>
    <maximum_age>75 Years</maximum_age>
    <healthy_volunteers>Accepts Healthy Volunteers</healthy_volunteers>
  </eligibility>
  <overall_official>
    <last_name>Vinh Giap Nguyen, DDS, MSc</last_name>
    <role>Principal Investigator</role>
  </overall_official>
  <overall_contact>
    <last_name>Vinh Giap Nguyen, DDS, MSc</last_name>
    <phone>1 514 605 3435</phone>
    <email>email@drvinhnguyen.com</email>
  </overall_contact>
  <overall_contact_backup>
    <last_name>Camille Gregoire Guindon, RH</last_name>
    <phone>1 450 672 3435</phone>
    <email>info@drvinhnguyen.com</email>
  </overall_contact_backup>
  <reference>
    <citation>Schropp L, Wenzel A, Kostopoulos L, Karring T. Bone healing and soft tissue contour changes following single-tooth extraction: a clinical and radiographic 12-month prospective study. Int J Periodontics Restorative Dent. 2003 Aug;23(4):313-23.</citation>
    <PMID>12956475</PMID>
  </reference>
  <reference>
    <citation>Tan WL, Wong TL, Wong MC, Lang NP. A systematic review of post-extractional alveolar hard and soft tissue dimensional changes in humans. Clin Oral Implants Res. 2012 Feb;23 Suppl 5:1-21. doi: 10.1111/j.1600-0501.2011.02375.x.</citation>
    <PMID>22211303</PMID>
  </reference>
  <reference>
    <citation>Walker CJ, Prihoda TJ, Mealey BL, Lasho DJ, Noujeim M, Huynh-Ba G. Evaluation of Healing at Molar Extraction Sites With and Without Ridge Preservation: A Randomized Controlled Clinical Trial. J Periodontol. 2017 Mar;88(3):241-249. doi: 10.1902/jop.2016.160445. Epub 2016 Oct 27.</citation>
    <PMID>27788625</PMID>
  </reference>
  <reference>
    <citation>Araujo MG, Lindhe J. Dimensional ridge alterations following tooth extraction. An experimental study in the dog. J Clin Periodontol. 2005 Feb;32(2):212-8. doi: 10.1111/j.1600-051X.2005.00642.x.</citation>
    <PMID>15691354</PMID>
  </reference>
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    <citation>MacBeth N, Trullenque-Eriksson A, Donos N, Mardas N. Hard and soft tissue changes following alveolar ridge preservation: a systematic review. Clin Oral Implants Res. 2017 Aug;28(8):982-1004. doi: 10.1111/clr.12911. Epub 2016 Jul 26.</citation>
    <PMID>27458031</PMID>
  </reference>
  <reference>
    <citation>Iocca O, Farcomeni A, Pardinas Lopez S, Talib HS. Alveolar ridge preservation after tooth extraction: a Bayesian Network meta-analysis of grafting materials efficacy on prevention of bone height and width reduction. J Clin Periodontol. 2017 Jan;44(1):104-114. doi: 10.1111/jcpe.12633. Epub 2016 Dec 5.</citation>
    <PMID>27712001</PMID>
  </reference>
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    <citation>Willenbacher M, Al-Nawas B, Berres M, Kammerer PW, Schiegnitz E. The Effects of Alveolar Ridge Preservation: A Meta-Analysis. Clin Implant Dent Relat Res. 2016 Dec;18(6):1248-1268. doi: 10.1111/cid.12364. Epub 2015 Jul 1.</citation>
    <PMID>26132885</PMID>
  </reference>
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    <citation>Hakeda Y, Kumegawa M. [Osteoclasts in bone metabolism]. Kaibogaku Zasshi. 1991 Aug;66(4):215-25. Japanese.</citation>
    <PMID>1759556</PMID>
  </reference>
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    <citation>Hagenaars CE, van der Kraan AA, Kawilarang-de Haas EW, Visser JW, Nijweide PJ. Osteoclast formation from cloned pluripotent hemopoietic stem cells. Bone Miner. 1989 May;6(2):179-89. doi: 10.1016/0169-6009(89)90049-4.</citation>
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    <citation>Buckwalter JA, Glimcher MJ, Cooper RR, Recker R. Bone biology. I: Structure, blood supply, cells, matrix, and mineralization. Instr Course Lect. 1996;45:371-86. No abstract available.</citation>
    <PMID>8727757</PMID>
  </reference>
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    <citation>Wagner JE, Collins D, Fuller S, Schain LR, Berson AE, Almici C, Hall MA, Chen KE, Okarma TB, Lebkowski JS. Isolation of small, primitive human hematopoietic stem cells: distribution of cell surface cytokine receptors and growth in SCID-Hu mice. Blood. 1995 Jul 15;86(2):512-23.</citation>
    <PMID>7541665</PMID>
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    <citation>Baron R, Neff L, Tran Van P, Nefussi JR, Vignery A. Kinetic and cytochemical identification of osteoclast precursors and their differentiation into multinucleated osteoclasts. Am J Pathol. 1986 Feb;122(2):363-78.</citation>
    <PMID>3946557</PMID>
  </reference>
  <reference>
    <citation>Hoffmann O, Bartee BK, Beaumont C, Kasaj A, Deli G, Zafiropoulos GG. Alveolar bone preservation in extraction sockets using non-resorbable dPTFE membranes: a retrospective non-randomized study. J Periodontol. 2008 Aug;79(8):1355-69. doi: 10.1902/jop.2008.070502.</citation>
    <PMID>18672984</PMID>
  </reference>
  <reference>
    <citation>Laurito D, Cugnetto R, Lollobrigida M, Guerra F, Vestri A, Gianno F, Bosco S, Lamazza L, De Biase A. Socket Preservation with d-PTFE Membrane: Histologic Analysis of the Newly Formed Matrix at Membrane Removal. Int J Periodontics Restorative Dent. 2016 Nov/Dec;36(6):877-883. doi: 10.11607/prd.2114.</citation>
    <PMID>27740650</PMID>
  </reference>
  <reference>
    <citation>Iasella JM, Greenwell H, Miller RL, Hill M, Drisko C, Bohra AA, Scheetz JP. Ridge preservation with freeze-dried bone allograft and a collagen membrane compared to extraction alone for implant site development: a clinical and histologic study in humans. J Periodontol. 2003 Jul;74(7):990-9. doi: 10.1902/jop.2003.74.7.990.</citation>
    <PMID>12931761</PMID>
  </reference>
  <reference>
    <citation>Camargo PM, Lekovic V, Carnio J, Kenney EB. Alveolar bone preservation following tooth extraction: a perspective of clinical trials utilizing osseous grafting and guided bone regeneration. Oral Maxillofac Surg Clin North Am. 2004 Feb;16(1):9-18, v. doi: 10.1016/j.coms.2003.10.004.</citation>
    <PMID>18088709</PMID>
  </reference>
  <reference>
    <citation>Nevins M, Camelo M, De Paoli S, Friedland B, Schenk RK, Parma-Benfenati S, Simion M, Tinti C, Wagenberg B. A study of the fate of the buccal wall of extraction sockets of teeth with prominent roots. Int J Periodontics Restorative Dent. 2006 Feb;26(1):19-29.</citation>
    <PMID>16515093</PMID>
  </reference>
  <reference>
    <citation>Serino G, Biancu S, Iezzi G, Piattelli A. Ridge preservation following tooth extraction using a polylactide and polyglycolide sponge as space filler: a clinical and histological study in humans. Clin Oral Implants Res. 2003 Oct;14(5):651-8. doi: 10.1034/j.1600-0501.2003.00970.x.</citation>
    <PMID>12969370</PMID>
  </reference>
  <reference>
    <citation>Guarnieri R, Aldini NN, Pecora G, Fini M, Giardino R. Medial-grade calcium sulfate hemihydrate (surgiplaster) in healing of a human extraction socket--histologic observation at 3 months: a case report. Int J Oral Maxillofac Implants. 2005 Jul-Aug;20(4):636-41.</citation>
    <PMID>16161750</PMID>
  </reference>
  <reference>
    <citation>Artzi Z, Tal H, Dayan D. Porous bovine bone mineral in healing of human extraction sockets. Part 1: histomorphometric evaluations at 9 months. J Periodontol. 2000 Jun;71(6):1015-23. doi: 10.1902/jop.2000.71.6.1015.</citation>
    <PMID>10914806</PMID>
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    <citation>Nappi JF, Lehman JA Jr. The effects of Surgicel on bone formation. Cleft Palate J. 1980 Oct;17(4):291-6.</citation>
    <PMID>6934043</PMID>
  </reference>
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    <citation>Armstrong JK, Han B, Kuwahara K, Yang Z, Magyar CE, Dry SM, Atti E, Tetradis S, Fisher TC. The effect of three hemostatic agents on early bone healing in an animal model. BMC Surg. 2010 Dec 17;10:37. doi: 10.1186/1471-2482-10-37.</citation>
    <PMID>21167039</PMID>
  </reference>
  <reference>
    <citation>Araujo MG, Sukekava F, Wennstrom JL, Lindhe J. Ridge alterations following implant placement in fresh extraction sockets: an experimental study in the dog. J Clin Periodontol. 2005 Jun;32(6):645-52. doi: 10.1111/j.1600-051X.2005.00726.x.</citation>
    <PMID>15882225</PMID>
  </reference>
  <reference>
    <citation>Sanz M, Cecchinato D, Ferrus J, Pjetursson EB, Lang NP, Lindhe J. A prospective, randomized-controlled clinical trial to evaluate bone preservation using implants with different geometry placed into extraction sockets in the maxilla. Clin Oral Implants Res. 2010 Jan;21(1):13-21. doi: 10.1111/j.1600-0501.2009.01824.x. Epub 2009 Nov 18.</citation>
    <PMID>19922492</PMID>
  </reference>
  <reference>
    <citation>Sanz M, Lindhe J, Alcaraz J, Sanz-Sanchez I, Cecchinato D. The effect of placing a bone replacement graft in the gap at immediately placed implants: a randomized clinical trial. Clin Oral Implants Res. 2017 Aug;28(8):902-910. doi: 10.1111/clr.12896. Epub 2016 Jun 7.</citation>
    <PMID>27273298</PMID>
  </reference>
  <reference>
    <citation>Chappuis V, Engel O, Shahim K, Reyes M, Katsaros C, Buser D. Soft Tissue Alterations in Esthetic Postextraction Sites: A 3-Dimensional Analysis. J Dent Res. 2015 Sep;94(9 Suppl):187S-93S. doi: 10.1177/0022034515592869. Epub 2015 Jun 30.</citation>
    <PMID>26130259</PMID>
  </reference>
  <reference>
    <citation>Chappuis V, Engel O, Reyes M, Shahim K, Nolte LP, Buser D. Ridge alterations post-extraction in the esthetic zone: a 3D analysis with CBCT. J Dent Res. 2013 Dec;92(12 Suppl):195S-201S. doi: 10.1177/0022034513506713. Epub 2013 Oct 24.</citation>
    <PMID>24158340</PMID>
  </reference>
  <verification_date>December 2018</verification_date>
  <study_first_submitted>December 1, 2018</study_first_submitted>
  <study_first_submitted_qc>December 3, 2018</study_first_submitted_qc>
  <study_first_posted type="Actual">December 4, 2018</study_first_posted>
  <last_update_submitted>December 3, 2018</last_update_submitted>
  <last_update_submitted_qc>December 3, 2018</last_update_submitted_qc>
  <last_update_posted type="Actual">December 4, 2018</last_update_posted>
  <responsible_party>
    <responsible_party_type>Principal Investigator</responsible_party_type>
    <investigator_affiliation>Clinique Dentaire et d'implantologie Dr.Vinh Nguyen</investigator_affiliation>
    <investigator_full_name>Vinh Giap Nguyen, DDS</investigator_full_name>
    <investigator_title>Principal investigator</investigator_title>
  </responsible_party>
  <keyword>Socket preservation</keyword>
  <patient_data>
    <sharing_ipd>Yes</sharing_ipd>
    <ipd_description>De-identified individual participant data for all primary and secondary outcome measures will made available.</ipd_description>
    <ipd_info_type>Study Protocol</ipd_info_type>
    <ipd_info_type>Statistical Analysis Plan (SAP)</ipd_info_type>
    <ipd_info_type>Clinical Study Report (CSR)</ipd_info_type>
    <ipd_time_frame>Data will be available within 6 months of study completion.</ipd_time_frame>
    <ipd_access_criteria>Data access requests will be reviewed by an external Independent Review Panel. Requestors will be required to sign a Data Access Agreement.</ipd_access_criteria>
  </patient_data>
  <!-- Results have not yet been posted for this study                                          -->
</clinical_study>


download date: ClinicalTrials.gov processed this data on September 20, 2023
link text: Link to the current ClinicalTrials.gov record.
url: https://clinicaltrials.gov/ct2/show/NCT03763617
org study id: PI2018
nct id: NCT03763617
lead sponsor: 
collaborator: 
has dmc: Yes
is fda regulated drug: No
is fda regulated device: No
The efficacy of the Periosteal Inhibition technique for socket preservation is studies
      against a control group in which the extraction sockets are allowed to heal without a socket
      preservation procedure.
Socket preservation procedures have been shown to significantly reduce the loss of ridge
      dimension of an extraction socket. These procedures involve filling the empty socket with a
      bone graft material, which, serves as scaffold to limit horizontal and vertical ridge
      alterations. In order to contain the graft material, an occlusive barrier such as an
      autogenous soft tissue graft, resorbable or non-resorbable membrane, is often required. As
      yet, no one socket preservation technique has been proven superior to another, and none have
      proven totally effective in preserving ridge morphology. A net reduction of 1.5 mm in ridge
      width and 0.5 mm in ridge height is often observed after socket preservation procedures,
      which may necessitate additional hard or soft tissue augmentation to fully restore the ridge
      dimension.

      In an animal histologic study in 2005, Araujo and Lindhe demonstrated that trauma and loss of
      periodontal ligament triggered an osteoclastic activity causing loss of bundle bone and
      modeling of the cortical bone plate. Osteoclasts are multi-nucleated cells that are
      responsible for bone resorption and are found on the outer layer of bone, beneath the
      periosteum. Osteoclasts are thought to be derived from pluripotent hematopoietic stem cells.
      When stimulated, these mononuclear precursors, the smallest of which is 9.5 microns in
      diameter, proliferate and attach to the bone surface to be resorbed, and only then fuse to
      form large mature multinucleated osteoclasts.

      High-density polytetrafluoroethylene (d-ptfe) membranes have been used in socket preservation
      procedures as an occlusive barrier to contain the bone graft
      material.Polytetrafluoroethylene, a stable polymer and highly biocompatible, has a membrane
      porosity of less than 0.3 microns. It is impervious to bacteria and thus is recommended for a
      socket preservation technique, where a membrane is intentionally exposed.

      In the present study, a high-density polytetrafluoroethylene (d-ptfe) membrane is placed
      between the periosteum and the buccal bone plate of an extraction socket where it will stay
      for a duration of 4 months, the time needed for the completion of bone forming within the
      socket. The goal of the non-resorbable d-ptfe membrane is to prevent the migration of
      precursor cells to the bone surface and thus their fusion to form osteoclast. The authors
      hypothesize that the passage of the precursor cells from the periosteum to the bone surface
      is inhibited by the small-diameter pores in the non-resorbable d-ptfe membrane. Osteolytic
      activity on the outer surface of the socket is thereby prevented as the precursor cells
      cannot form osteoclasts. The author coins the term "Periosteal Inhibition technique" for this
      socket preservation procedure.The study will compare dimension changes between extraction
      socket treated using the Periosteal Inhibition technique and those allowed to heal without a
      socket preservation procedure.
allocation: Randomized
intervention model: Parallel Assignment
intervention model description: A d-ptfe membrane is placed between the buccal bone and periosteum of an extraction socket to prevent the precursors of the bone resorbing cells (osteoclasts) from adhering to the bone surface.
primary purpose: Prevention
masking: Double (Participant, Investigator)
measure: Ridge widths
time frame: 0 hour and 4 months
description: Bucco-lingual ridge dimensions at the midline is measured at 3mm and 5mm apical to the gingival margin, at the time of extraction intra-op and 4 months post-extraction, using a acrylic template for repeatable measurements.
measure: Change in Ridge widths on the buccal and lingual aspects
time frame: 0 hour and 4 months
description: Buccal and lingual ridge dimension change at the midline is measured at 3mm and 5mm apical to the gingival margin, at the time of extraction and 4 months post-extraction, using a acrylic template for repeatable measurements.
measure: Change in Ridge heights
time frame: 0 hour and 4 months
description: Change in Ridge bone heights at messiah and distal interproximal, mid-buccal and mid-lingual aspects.
measure: Bone plate thickness
time frame: 0 hour
description: Marginal buccal and lingual bone plate thickness
measure: Keratinized mucosa
time frame: 0 hour and 4 months
description: Width of keratinized mucosa over the ridge
measure: Complications
time frame: 1 month, 2 months, 3 months and 4 months
description: To assess complication rate of the procedure.
arm group label: Test group
arm group type: Active Comparator
description: A d-ptfe membrane will be placed between the buccal bone and periosteum of an extraction socket during a 4 months healing time before it is surgically removed.
arm group label: Control group
arm group type: No Intervention
description: The extraction socket will be left to heal naturally without a socket preservation intervention.
intervention type: Device
intervention name: d-ptfe membrane
description: Socket preservation using d-ptfe membrane to inhibit the formation of osteoclasts
arm group label: Test group
criteria: 
gender: All
minimum age: 22 Years
maximum age: 75 Years
healthy volunteers: Accepts Healthy Volunteers
last name: Vinh Giap Nguyen, DDS, MSc
role: Principal Investigator
last name: Vinh Giap Nguyen, DDS, MSc
phone: 1 514 605 3435
email: email@drvinhnguyen.com
last name: Camille Gregoire Guindon, RH
phone: 1 450 672 3435
email: info@drvinhnguyen.com
citation: Schropp L, Wenzel A, Kostopoulos L, Karring T. Bone healing and soft tissue contour changes following single-tooth extraction: a clinical and radiographic 12-month prospective study. Int J Periodontics Restorative Dent. 2003 Aug;23(4):313-23.
PMID: 12956475
citation: Tan WL, Wong TL, Wong MC, Lang NP. A systematic review of post-extractional alveolar hard and soft tissue dimensional changes in humans. Clin Oral Implants Res. 2012 Feb;23 Suppl 5:1-21. doi: 10.1111/j.1600-0501.2011.02375.x.
PMID: 22211303
citation: Walker CJ, Prihoda TJ, Mealey BL, Lasho DJ, Noujeim M, Huynh-Ba G. Evaluation of Healing at Molar Extraction Sites With and Without Ridge Preservation: A Randomized Controlled Clinical Trial. J Periodontol. 2017 Mar;88(3):241-249. doi: 10.1902/jop.2016.160445. Epub 2016 Oct 27.
PMID: 27788625
citation: Araujo MG, Lindhe J. Dimensional ridge alterations following tooth extraction. An experimental study in the dog. J Clin Periodontol. 2005 Feb;32(2):212-8. doi: 10.1111/j.1600-051X.2005.00642.x.
PMID: 15691354
citation: MacBeth N, Trullenque-Eriksson A, Donos N, Mardas N. Hard and soft tissue changes following alveolar ridge preservation: a systematic review. Clin Oral Implants Res. 2017 Aug;28(8):982-1004. doi: 10.1111/clr.12911. Epub 2016 Jul 26.
PMID: 27458031
citation: Iocca O, Farcomeni A, Pardinas Lopez S, Talib HS. Alveolar ridge preservation after tooth extraction: a Bayesian Network meta-analysis of grafting materials efficacy on prevention of bone height and width reduction. J Clin Periodontol. 2017 Jan;44(1):104-114. doi: 10.1111/jcpe.12633. Epub 2016 Dec 5.
PMID: 27712001
citation: Willenbacher M, Al-Nawas B, Berres M, Kammerer PW, Schiegnitz E. The Effects of Alveolar Ridge Preservation: A Meta-Analysis. Clin Implant Dent Relat Res. 2016 Dec;18(6):1248-1268. doi: 10.1111/cid.12364. Epub 2015 Jul 1.
PMID: 26132885
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PMID: 18672984
citation: Laurito D, Cugnetto R, Lollobrigida M, Guerra F, Vestri A, Gianno F, Bosco S, Lamazza L, De Biase A. Socket Preservation with d-PTFE Membrane: Histologic Analysis of the Newly Formed Matrix at Membrane Removal. Int J Periodontics Restorative Dent. 2016 Nov/Dec;36(6):877-883. doi: 10.11607/prd.2114.
PMID: 27740650
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PMID: 12931761
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PMID: 18088709
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PMID: 12969370
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citation: Chappuis V, Engel O, Shahim K, Reyes M, Katsaros C, Buser D. Soft Tissue Alterations in Esthetic Postextraction Sites: A 3-Dimensional Analysis. J Dent Res. 2015 Sep;94(9 Suppl):187S-93S. doi: 10.1177/0022034515592869. Epub 2015 Jun 30.
PMID: 26130259
citation: Chappuis V, Engel O, Reyes M, Shahim K, Nolte LP, Buser D. Ridge alterations post-extraction in the esthetic zone: a 3D analysis with CBCT. J Dent Res. 2013 Dec;92(12 Suppl):195S-201S. doi: 10.1177/0022034513506713. Epub 2013 Oct 24.
PMID: 24158340
responsible party type: Principal Investigator
investigator affiliation: Clinique Dentaire et d'implantologie Dr.Vinh Nguyen
investigator full name: Vinh Giap Nguyen, DDS
investigator title: Principal investigator
sharing ipd: Yes
ipd description: De-identified individual participant data for all primary and secondary outcome measures will made available.
ipd info type: Study Protocol
ipd info type: Statistical Analysis Plan (SAP)
ipd info type: Clinical Study Report (CSR)
ipd time frame: Data will be available within 6 months of study completion.
ipd access criteria: Data access requests will be reviewed by an external Independent Review Panel. Requestors will be required to sign a Data Access Agreement.