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Tooth FracturesNCT05505084

Alveolar Ridge Preservation Following Tooth Extraction.

An observational study of Tooth Fractures and Tooth Extraction Status Nos, run by University of Pennsylvania at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Bone resorption after a tooth extraction is a generally accepted knowledge and has been demonstrated by many animal and human studies. Especially during the first three months followed by the tooth extraction, the volume of bone may change significantly without any interference. Read more about this study

Who is it for?
Ages 18 to 80 yearsHealthy volunteers can take part
What is being tested?
Tooth extraction and ridge preservation using different barrier mermbranes
How many people
47 participants
Where
1 siteUnited States
Study dates
15 Aug 2022to 31 Dec 2025
How long will I take part?
6 Months
Phase
Observational
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 80 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: The study population will consist of subjects presenting to the University of Pennsylvania School of Dental Medicine who require extraction of a hopeless tooth due to trauma, caries, or endodontic/periodontal reasons, and who are interested in replacing their tooth with a dental implant.

Who may be able to join

  • Subjects must between the ages of 18 and 80.
  • Subjects must require removal of at least one maxillary premolar
  • Subjects should benefit from an implant-supported crown.
  • Subjects must have voluntarily signed the informed consent form.
  • Subjects must be assessed as ASA I, ASA II by a member of the research team.

Who cannot join

  • Medical conditions requiring the use of steroids.
  • History of leukocyte dysfunction or deficiencies, bleeding deficiencies, renal failure, uncontrolled endocrine disorders, acquired immunodeficiency syndrome or hepatitis.
  • History of neoplastic disease requiring the use of chemotherapy or irradiation to head and neck.
  • Subjects who have diabetes mellitus.
  • Subjects who have undergone administration of any investigational drug or device within 30 days of enrollment in the study.
  • Alcohol or drug abuse.
  • Subjects who are heavy smokers (greater than 10 cigarettes per day or cigar equivalents) or chew tobacco.
  • Conditions or circumstances, in the opinion of the research team, which would prevent completion of study participation or interfere with analysis of study results, such as a history of non-compliance or unreliability.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Penn Dental Medicine

    Philadelphia, Pennsylvania, 19104

Other trials in United States

About this study

Official title: Comparison of Five Distinct Membranes for Preservation of the Alveolar Ridge Following Tooth Extraction: A Prospective, Randomized, Controlled Clinical Study

Bone resorption after a tooth extraction is a generally accepted knowledge and has been demonstrated by many animal and human studies. Especially during the first three months followed by the tooth extraction, the volume of bone may change significantly without any interference. Thus, doing a ridge preservation procedure following the extraction is a common standard of care method to maintain the socket volume if implant placement is considered as a treatment option in the future. A variety of materials and methods have been used for ridge preservation. However, it's still inconclusive to determine the best material to maintain the ridge dimension, especially for membrane placement that allows for space maintenance to protect the grafting material. Furthermore, there is no evidence to show any treatment rationale is superior to any other ridge preservation method.

In general, the membrane serves the function of the barrier and space protector. The periodontal surgeon use membranes to exclude the epithelium growth and to limit the collapse of the soft tissue into the healing alveolar socket. Regarding resorbable and non-resorbable membrane materials, both serve the function of protecting the graft material from the oral cavity. However, there are also many demonstrating that without membranes the extraction socket healed nicely without any interferences. The question to us is: Do we need the membrane to exclude the epithelium or any kind of surgical dressing material is sufficient enough to preserve the volume of the extracted ridge?

The object of this study is to compare five popular membranes on the market that present different characteristics of the membranes.

Read the detailed description

The extraction and the grafting procedure involved in this study are standard of care. The investigators will extract the hopeless teeth and prepare the site for implant placement in 4 months.

The following products will be used during the study:

  • Collatape (Zimmer Dental)- approved by the FDA (class III)
  • Cytoplast (Osteogenics Biomedical)- cleared by the FDA
  • OssixPlus (Dantum Dental)- cleared by the FDA
  • Renovix-Plus (Salvin)- cleared by the FDA
  • BioXclude (SNOASIS)-certificate from the American Association of Tissue Banking
  • PuroⓇ, Zimmer Dental)- cleared by the FDA
  • RegenerOssⓇ, Zimmer Dental) - cleared by the FDA

During the appointment for the implant placement. A bone core from all subjects in each treatment group will be collected from the augmentation site instead of drilling away. The sample will be evaluated for the following:

  • % viable of bone
  • % of connective tissue
  • % of residual graft material
Being tested
Tooth extraction and ridge preservation using different barrier mermbranes
Keywords
implant, alveolar ridge preservation
Medical subject headings
Tooth Fractures

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Tooth extraction and ridge preservation using different barrier mermbranesProcedure or surgery

    The hopeless and unrestorable teeth are planned for extraction and implant placement.

Study groups in NCT05505084
Study groupRoleWhat they receive
Collatape (Zimmer Dental)This material is a resorbable collagen wound dressing. They are made from bovine Achilles tendons and are a source of Type I collagen. The resorbable wound dressings are sterilized after purification with ethylene oxide.
Receives: Procedure: Tooth extraction and ridge preservation using different barrier mermbranes
Cytoplast Barrier Membranes TXT-200 Singles (Osteogenics Biomedical)Cytoplast Barrier membranes are manufactured from high-density Polytetrafluoroethylene (PTFE) which allows them to withstand exposure to the oral environment. The textured surface increases the surface area available for cellular attachment during dental bone grafting procedures thereby aiding in stabilizing the PTFE membrane. It can be removed non-surgically after at least 21 days.
Receives: Procedure: Tooth extraction and ridge preservation using different barrier mermbranes
Ossix Plus (dantum dental)OssixPlus is a resorbable collagen dental membrane used for Guided Bone Regeneration and Guided Tissue Regeneration. It contains a patented GLYMATRIX cross-linking technology that allows it to maintain barrier functionality for 4 to 6 months. The collagen is derived from porcine.
Receives: Procedure: Tooth extraction and ridge preservation using different barrier mermbranes
Renovix-Plus (Salvin)Renovix Plus is a non-cross-linked extracellular matrix containing Type I, II, and III Collagen, Fibronectin, Laminin, and Elastin. It provides architecture and barrier protection for bone regeneration and soft tissue esthetics. This membrane resorbs within six months.
Receives: Procedure: Tooth extraction and ridge preservation using different barrier mermbranes
BioXclude (Snoasis)BioXclude is a minimally manipulated allograft amnion chorion tissue. It is obtained from consenting mothers who donate their placentas after elective caesarian section delivery. The tissue is processed to cleanse and maintain the tissue. Following processing and dehydration, the allografts are packaged and terminally sterilized.
Receives: Procedure: Tooth extraction and ridge preservation using different barrier mermbranes

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Ridge dimension changes before and after the augmentation.

    The change in alveolar ridge dimensions will be assessed using CBCT technology after extraction and 4 months after extraction.

    Measured: from the date of the extraction 4 months

  2. Histological Evaluation

    A bone core from all subjects in each treatment group will be taken from the augmentation site at the time of implant placement (4 months post-augmentation) and will be evaluated for the composition of the specimen.

    Measured: 4 months post-augmentation

Secondary outcomes (2)
  1. Implant site conditions

    • Implant stability quotients as determined by resonance frequency analysis.

    Measured: 4 months post-augmentation

  2. Implant site conditions

    change of the periodontal phenotype

    Measured: 4 months post-augmentation

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted17 Aug 2022
  2. Study start15 Aug 2022
  3. Primary completion31 Dec 2025
  4. Study completion31 Dec 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case-control
Time perspective
Prospective
Enrolment
47 participants (actual)
Target duration
6 Months
IDs, dates and publications
ClinicalTrials.gov ID
NCT05505084
Sponsor's protocol ID
828879
Status last verified
Apr 2026
First submitted
1 Jun 2022
Last updated
8 May 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
Individual data sharing
No

Publications

  • Lekovic V, Kenney EB, Weinlaender M, Han T, Klokkevold P, Nedic M, Orsini M. A bone regenerative approach to alveolar ridge maintenance following tooth extraction. Report of 10 cases. J Periodontol. 1997 Jun;68(6):563-70. doi: 10.1902/jop.1997.68.6.563.

    PubMed 9203100
  • Ismail NM, Mustapha MS, Megat R. The subcellular localisation and the time course of bismuth in the gastric mucosa of rats after short-term administration of colloidal bismuth subcitrate. Ann Acad Med Singap. 1997 Nov;26(6):754-7.

    PubMed 9522974
  • 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.

    PubMed 22211303
  • Van der Weijden F, Dell'Acqua F, Slot DE. Alveolar bone dimensional changes of post-extraction sockets in humans: a systematic review. J Clin Periodontol. 2009 Dec;36(12):1048-58. doi: 10.1111/j.1600-051X.2009.01482.x.

    PubMed 19929956
  • Misawa M, Lindhe J, Araujo MG. The alveolar process following single-tooth extraction: a study of maxillary incisor and premolar sites in man. Clin Oral Implants Res. 2016 Jul;27(7):884-9. doi: 10.1111/clr.12710. Epub 2015 Nov 14.

    PubMed 26566965
  • Avila-Ortiz G, Elangovan S, Kramer KW, Blanchette D, Dawson DV. Effect of alveolar ridge preservation after tooth extraction: a systematic review and meta-analysis. J Dent Res. 2014 Oct;93(10):950-8. doi: 10.1177/0022034514541127. Epub 2014 Jun 25.

    PubMed 24966231
  • Corbella S, Taschieri S, Francetti L, Weinstein R, Del Fabbro M. Histomorphometric Results After Postextraction Socket Healing with Different Biomaterials: A Systematic Review of the Literature and Meta-Analysis. Int J Oral Maxillofac Implants. 2017 September/October;32(5):1001-1017. doi: 10.11607/jomi.5263. Epub 2017 Feb 23.

    PubMed 28231347
  • Jung RE, Ioannidis A, Hammerle CHF, Thoma DS. Alveolar ridge preservation in the esthetic zone. Periodontol 2000. 2018 Jun;77(1):165-175. doi: 10.1111/prd.12209. Epub 2018 Feb 27.

    PubMed 29484712
  • Bassir SH, Alhareky M, Wangsrimongkol B, Jia Y, Karimbux N. Systematic Review and Meta-Analysis of Hard Tissue Outcomes of Alveolar Ridge Preservation. Int J Oral Maxillofac Implants. 2018 Sep/Oct;33(5):979-994. doi: 10.11607/jomi.6399.

    PubMed 30231083
  • Avila-Ortiz G, Gubler M, Romero-Bustillos M, Nicholas CL, Zimmerman MB, Barwacz CA. Efficacy of Alveolar Ridge Preservation: A Randomized Controlled Trial. J Dent Res. 2020 Apr;99(4):402-409. doi: 10.1177/0022034520905660. Epub 2020 Feb 12.

    PubMed 32050833

Questions about this trial

What is this clinical trial studying?

An observational study of Tooth Fractures and Tooth Extraction Status Nos, run by University of Pennsylvania 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 5 inclusion and 8 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 8 May 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 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 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?

Ridge dimension changes before and after the augmentation. (time frame: from the date of the extraction 4 months). The study lists 2 primary outcomes in all. 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 NCT05505084, which also lists 10 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 8 May 2026.

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