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Wisdom ToothPhase 4PCL ECMNCT07834645

Application of Alloplastic Bone Graft With Polycaprolactone (PCL) Membrane and ECM-Collagen Membrane on Secondary Socket Healing in Third Molar Surgery.

A Phase 4 study testing polycarprolactone membrane (PCL membrane) and Extracellular matrix collagen (ECM) membrane in people with Wisdom Tooth and Socket Preservation, run by University of Malaya at 1 site in Malaysia.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

This study compared two membrane materials: 1. polycaprolactone (PCL) and 2. Extracellular matrix collagen membrane (ECM) as alternative. This is to see how well they prevent bone and gum damage after lower wisdom tooth removal. Read more about this study

Who is it for?
Ages 18 to 35 yearsHealthy volunteers can take part
Conditions the study is for
Wisdom Tooth, Socket Preservation
What is being tested?
polycarprolactone membrane (PCL membrane) and Extracellular matrix collagen (ECM) membrane
Could I receive a placebo?
No, everyone receives an active treatment
How many people
18 participants
Where
1 siteMalaysia
Study dates
2 May 2025to 30 Sep 2027
Phase
Phase 4
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 to 35 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Patient who requires surgical removal of bilateral impacted M3.
  • Patient with impacted bilateral M3 which are sound.
  • Impacted bilateral M3 classified as Class I or II with Level A or B according to Pell and Gregory's classification.
  • Presence of disease-free mandibular second molar (M2) adjacent to the M3 to be extracted
  • Patient aged 18 to 35 years old who are medically fit

Who cannot join

  • Impacted M3 associated with:
  • Fracture of angle of mandible.
  • Radiological evidence of cyst or tumour.
  • Incomplete root formation.
  • Acute pulpitis or severe pericoronitis that is not under controlled.
  • Gross dental caries.
Show all 14Show fewer
  • Retained roots of mandibular third molar with history of removal or coronectomy of unerupted/impacted M3.
  • Patients with periodontal disease
  • Patients with absence of lower second molars.
  • Medically compromised patients
  • Pregnant women.
  • Patient on oral contraceptives.
  • Current or previous bisphosphonate therapy or history of radiotherapy to the jaws.
  • Active smokers

Trial locations and contacts

1 site in 1 country.

Malaysia1 site
  • Faculty of Dentistry, Universiti Malaya

    Kuala Lumpur, 50603

Other trials in Malaysia

About this study

Official title: A Comparative Study on the Application of Alloplastic Bone Graft With Polycaprolactone (PCL) Membrane and ECM-Collagen Membrane on Secondary Socket Healing in Third Molar Surgery.

This study compared two membrane materials: 1. polycaprolactone (PCL) and 2. Extracellular matrix collagen membrane (ECM) as alternative. This is to see how well they prevent bone and gum damage after lower wisdom tooth removal. In this split-mouth trial, participants had both lower wisdom teeth removed, with one socket receiving PCL membrane and the other receiving ECM membrane after socket filled with EthOss (an alloplastic bone graft). Over a 24-week follow-up period, researchers tracked patient clinically on their comfort, gum healing, and new bone growth using X-rays.

Read the detailed description

Surgical removal of impacted mandibular third molars (M3) often associated with post-operative morbidities such as pain, facial swelling, limited mouth opening and injuries to the inferior alveolar nerve or lingual nerve. In addition, it can result in compromised periodontal health of the adjacent second molar (M2) and reduced alveolar bone height at the M3 region. The defect can be restored using bone substitutes with membrane. This study aims to assess wound healing of the surgical sites of third molar surgery with application of alloplastic bone graft with PCL membrane and ECM-collagen membrane. This is a split-mouth, double blinded, randomized controlled study. Participants underwent surgical removal of bilateral impacted mandibular third molars with either socket covered with PCL membrane and ECM-collagen membrane after filled up EthOss® alloplastic graft. The participants will be reviewed at post-operative 1 week (T1), 1 month (T2), 3 months (T3) and 6 months (T4) to monitor for signs of graft reaction/rejection. Periodontal assessments were performed at these four visits to assess the soft tissue healing. Radiological assessment (intraoral periapical x-ray) will be done at preoperative and post-operative week 24 to assess bone depth.

Being tested
polycarprolactone membrane (PCL membrane), Extracellular matrix collagen (ECM) membrane
Keywords
PCL membrane, ECM membrane, socket preservation

What participants receive

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

  • polycarprolactone membrane (PCL membrane)Combination product

    This is a split-mouth, randomized, within-subject clinical trial using a crossover assignment model. Each participant serves as their own control, receiving both Intervention 1. PCL membrane and Intervention 2.ECM collagen membrane simultaneously on opposite sides of the lower third molar after socket filled up with alloplast.

  • Extracellular matrix collagen (ECM) membraneCombination product

    Also called ECM membrane

    This is a split-mouth, randomized, within-subject clinical trial using a crossover assignment model. Each participant serves as their own control, receiving both Intervention 1. PCL membrane and Intervention 2.ECM collagen membrane simultaneously on opposite sides of the lower third molar after socket filled up with alloplast.

Study groups in NCT07834645
Study groupRoleWhat they receive
PCL membraneActive comparatorThis is a split-mouth, randomized, within-subject clinical trial using a crossover assignment model. Each participant serves as their own control, receiving both Intervention 1. PCL membrane and Intervention 2. ECM collagen membrane after socket filled with Ethoss alloplast material simultaneously on either sides of the lower third molar
Receives: Combination Product: Extracellular matrix collagen (ECM) membrane
ECM collagen membraneActive comparatorThis is a split-mouth, randomized, within-subject clinical trial using a crossover assignment model. Each participant serves as their own control, receiving both Intervention 1. PCL membrane and Intervention 2. ECM collagen membrane after socket filled with Ethoss alloplast material simultaneously on either sides of the lower third molar
Receives: Combination Product: polycarprolactone membrane (PCL membrane)

What is being measured

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

  1. Periodontal health assessment on lower second molar (1)

    1. Modified Plaque Score (from Score 0: No plaque present. Score 1: No visible plaque, but a periodontal probe skimmed across the tooth surface reveals soft plaque biofilm on the tip. Score 2: Visible plaque that can be easily seen with the naked eye without using a probe., modified bleeding score and gingival recession, periodontal pocketing depth)-- the lower the score, the better the periodontal health.

    Measured: baseline on day of surgery, 12 weeks and 24 weeks after surgery

  2. Periodontal health assessment on lower second molar (2)

    Modified Bleeding Score (Score 0: No bleeding observed after probing. Score 1: Bleeding is present.)-- the lower the score, the better the periodontal health

    Measured: baseline on day of surgery, 12 weeks and 24 weeks after surgery

  3. Periodontal health assessment on lower second molar (3)

    Periodontal Pocketing Depth (PPD) (measurement in milimeter, 1-3mm indicate healthy sulcus while >5mm indicate periodontal disesase)-- the lower the score, the better the periodontal health.

    Measured: baseline on day of surgery, 12 weeks and 24 weeks after surgery

  4. Periodontal health assessment on lower second molar (4)

    Gingival Recession- measurement in mm for gingival margin below the cementoenamel junction. - the lower the score, the better the periodontal health.

    Measured: baseline on day of surgery, 12 weeks and 24 weeks after surgery

  5. Periodontal health assessment on lower second molar (5)

    The healing index of Landry (Grade 1 poor to Grade 5 excellent)

    Measured: baseline on day of surgery, 12 weeks and 24 weeks after surgery

Secondary outcomes (2)
  1. The width of keratinized tissue

    The width of the keratinized gingiva will also be measured buccolingual at 6mm distal to the M2.

    Measured: baseline on day of surgery, 12 weeks and 24 weeks after surgery

  2. Bone gain at distal of lower second molar

    The radiographic bone level will be measured at T0 and T4 as the distance between the distal point of a line passing through the cemento-enamel junction of M2 (mesial and distal projection of M2's CEJ) and the bone peak distal to M2, at the bottom of the bony defect Measurement in milimeter.

    Measured: radiograph taken prior to surgery and 24 weeks after surgery

Timeline

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

  1. First posted22 Sep 2026
  2. Study start2 May 2025
  3. Primary completion31 Dec 2026 (estimated)
  4. Study completion30 Sep 2027 (estimated)

Resources

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 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Single group
Model description
This is a split mouth study, within a single patient with PCL membrane and ECM collagen membrane placed on each side of lower wisdom tooth socket after filled with allograft (Ethoss).
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
18 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07834645
Sponsor's protocol ID
DF OS 2512/0060 (P)
Other IDs
UMG057E-2025
Acronym
PCL ECM
Status last verified
Sep 2026
First submitted
11 Sep 2026
Last updated
22 Sep 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: Individual participant data (IPD) will not be shared to protect participant confidentiality and privacy. The informed consent approved by the Ethics Committee/Institutional Review Board (IRB) did not include explicit authorization from participants for secondary data sharing or broad external repository deposition. Furthermore, due to the granular nature of the clinical data collected, full de-identification cannot be guaranteed without risk of re-identification. Aggregate data, summary statistics, and primary outcomes will instead be made available through peer-reviewed publications.

Publications

  • Aimetti, M., Romano, F., Pigella, E., Pranzini, F., & Debernaerdi, C. (2005). Treatment of Wide, Shallow, and Predominantly 1-Wall Intrabony Defects With a Bioabsorbable Membrane: A Randomized Controlled Clinical Trial. Journal of Periodontology, 76(8), 1354-1361. Bohner, M., Santoni, B. L. G., & Dobelin, N. (2020). Beta-tricalcium phosphate for bone substitution: Synthesis and properties. Acta Biomater, 113, 23-41. Canullo, L., Rossi-Fedele, G., Camodeca, F., Menini, M., & Pesce, P. (2021). A Pilot Retrospective Study on the Effect of Bone Grafting after Wisdom Teeth Extraction. Materials (Basel), 14(11https://doi.org/10.3390/ma14112844). Chen, G., Sato, T., Ohgushi, H., Ushida, T., Tateishi, T., & Tanaka, J. (2005). Culturing of skin fibroblasts in a thin PLGA-collagen hybrid mesh. Biomaterials, 26(15), 2559-2566. De Angelis, N., Pesce, P., Poedjiastoeti, W., Suwandi, T., Tjandrawinata, R., Bagnasco, F., & Menini, M. (2024). 3D-Printable Biopolymers for Socket Preservation Technique: Soft Tissues Response: A Pilot Randomised Clinical Study. Dent J (Basel), 12(10). Retrieved Oct 7, from https://www.ncbi.nlm.nih.gov/pubmed/39452449 Dodson, T. B. (2004). Management of Mandibular Third Molar Extraction Sites to Prevent Periodontal Defects. Journal of Oral and Maxillofacial Surgery, 62(10), 1213-1224. Fairbairn, P., Kilner, S., O'Hooley, D., Fish, A., & Kurtzman, G. M. (2023). Sinus Augmentation for Implant Placement Utilizing a Novel Synthetic Graft Material with Delayed Immediate Socket Grafting: A 2-Year Case Study. J. Clin. Med, 12(1). Goh, B. T., Teh, L. Y., Tan, D. B., Zhang, Z., & Teoh, S. H. (2015). Novel 3D polycaprolactone scaffold for ridge preservation--a pilot randomised controlled clinical trial. Clin Oral Implants Res, 26(3), 271-277. Retrieved Mar, from https://www.ncbi.nlm.nih.gov/pubmed/25263527 Jambhekar, S., Kernen, F., & Bidra, A. S. (2015). Clinical and histologic outcomes of socket grafting after flapless tooth extraction:

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing polycarprolactone membrane (PCL membrane) and Extracellular matrix collagen (ECM) membrane in people with Wisdom Tooth and Socket Preservation, run by University of Malaya at 1 site in Malaysia.

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 14 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: under way, not looking for participants, as of the sponsor's last update on 22 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Malaysia. 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.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

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?

Periodontal health assessment on lower second molar (1) (time frame: baseline on day of surgery, 12 weeks and 24 weeks after surgery). The study lists 5 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 NCT07834645, which also lists 1 linked publication.

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 22 Sep 2026.

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