CClinicalTrials.gg
CompletedNCT07171879PONTIC-MPMUpdated Sep 17, 2025

Pontic Shield and Mineralized Plasmatic Matrix for Ridge Preservation

An interventional study of Tooth Extraction only and Extraction + MPM in Alveolar Ridge Preservation, sponsored by Soaad Tolba Mohammed Tolba Badawi. Completed at 1 site in Egypt. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2025-09-17.

Sponsored by Soaad Tolba Mohammed Tolba Badawi · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 1 year after the study started (first participant enrolled Sep 2024, registered Sep 2025).
Phase
Not applicable
Study type
Interventional
Enrollment
56
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

This study is testing new methods to preserve the jawbone and gum tissue after removing a damaged front tooth. Normally, when a tooth is taken out, the bone and gums in that area shrink, which can make future dental treatment more difficult and affect appearance. A technique called Partial Extraction Therapy (Pontic Shield Technique) keeps part of the tooth root in place to help maintain the natural shape of the bone and gums. Another method, called Mineralized Plasmatic Matrix (MPM), uses a patient's own blood mixed with bone particles to support healing.

In this randomized clinical trial, 56 patients were assigned to one of four groups:

Group I: Tooth extraction only Group II: Tooth extraction with MPM grafting Group III: Pontic shield technique alone Group IV: Pontic shield technique with MPM grafting The main outcome measured was the amount of bone width preserved, using 3D X-rays (CBCT). Other outcomes included bone height and soft-tissue healing over 4 months.

This research will help determine whether the pontic shield technique, with or without MPM, provides better preservation of bone and gum tissue compared to tooth extraction alone.

02

Conditions studied

  • Alveolar Ridge Preservation

Keywords

  • Partial extraction therapy
  • Pontic shield
  • Mineralized plasmatic matrix (MPM)
  • Socket preservation
  • Wound healing index
03

In context

Lead sponsor

Soaad Tolba Mohammed Tolba Badawi is the lead sponsor of 9 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Adults (≥18 years).
  • Classified as ASA I (healthy) according to the American Society of Anesthesiologists Physical Status Classification.
  • Presence of Type 1 extraction sockets (intact buccal bone and soft tissues).
  • Adequate oral hygiene.
  • Sufficient inter-arch space for prosthetic rehabilitation.
  • Willingness to comply with study protocol and follow-up schedule.

Exclusion criteria

Exclusion Criteria:

  • Systemic conditions affecting bone metabolism or wound healing (e.g., uncontrolled diabetes, osteoporosis, immunosuppression).
  • History of head and neck radiotherapy or bisphosphonate therapy.
  • Acute infection or suppuration at the extraction site.
  • Severe periodontal disease.
  • Root caries or tooth mobility.
  • Buccal bone plate loss due to vertical/horizontal root fractures or advanced periodontitis.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
56 participants (actual)

Study arms

  • Active comparator
    Extraction Only

    Patients receive total tooth extraction in the esthetic maxillary zone without any adjunctive grafting.

    Procedure: Tooth Extraction only

  • Active comparator
    Extraction + MPM

    Patients receive total tooth extraction in the esthetic maxillary zone, followed by grafting with MPM.

    Procedure: Extraction + MPM

  • Active comparator
    Pontic Shield Only

    Patients undergo the pontic shield technique, in which a portion of the buccal root is preserved to maintain ridge contour, without grafting.

    Procedure: Pontic Shield Only

  • Active comparator
    Pontic Shield + MPM

    Patients undergo the pontic shield technique combined with MPM grafting for ridge preservation.

    Procedure: Pontic Shield + MPM

Interventions

  • ProcedureTooth Extraction only

    Conventional atraumatic extraction of the non-restorable maxillary tooth in the esthetic zone without socket preservation procedures.

  • ProcedureExtraction + MPM

    Tooth extraction followed by socket grafting using MPM, prepared from autologous blood combined with xenograft bone particles.

  • ProcedurePontic Shield Only

    Partial extraction therapy using the pontic shield technique, in which the buccal root fragment is preserved to maintain ridge contour, without additional grafting.

  • ProcedurePontic Shield + MPM

    Pontic shield technique combined with grafting using mineralized plasmatic matrix (MPM) for enhanced ridge preservation and healing.

06

What researchers measure

Primary outcomes

  1. Alveolar Ridge Width Change

    Mean changes in alveolar ridge width measured at standardized reference points on cone-beam computed tomography (CBCT) Unit of Measure: millimeters (mm)

    Time frame: Baseline (pre- or immediate post-extraction) to 4 months.

Secondary outcomes

  1. Buccal and Palatal Bone Height Change

    Change in buccal and palatal bone heights measured on CBCT from baseline to 4 months. Unit of Measure: mm

    Time frame: Baseline to 4 months.

  2. Soft-Tissue Healing (Wound Healing Index, WHI)

    Clinical soft-tissue healing evaluated using the WHI. Unit of Measure: score on 5-point scale with higher values indicating more favorable wound healing.

    Time frame: 1 week and 4 months post-extraction.

07

Study locations

1 site
  • Faculty of Dentistry, Mansoura University
    Al Mansurah, Dakahlia Governorate 35511, Egypt
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 17, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07171879
Lead sponsor
Soaad Tolba Mohammed Tolba Badawi
Responsible party
Soaad Tolba Mohammed Tolba Badawi (Lecturer of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mansoura University, Mansoura University) — Sponsor-investigator
First posted
Sep 15, 2025
Start date
Sep 1, 2024
Primary completion
Jul 1, 2025
Completion
Jul 1, 2025
Last update
Sep 17, 2025

Study contacts

Soaad Tolba Badawy, Lecturer, Oral Surgery, MU
principal investigator · Mansoura University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2025. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion