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OpenTrials
Enrolling by Invitation

NCT Number: NCT07023757

Effect of Age on PRF Quality; Assessed by Evaluating Healing Outcomes of ARP

This study will examine whether using PRF and your age are going to affect the healing and regeneration benefits gained from PRF.

Enrolling by Invitation

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Key information

Conditions

Age range

20 year–80 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Michigan School of Dentistry

Ann Arbor, Michigan, 48109, United States

About this study

Platelet-rich fibrin (PRF) is commonly used to enhance gum tissue healing and reducing pain after tooth extraction and before placing a dental implant. 44 patients requiring a tooth extraction will be recruited and randomized to receive a collagen plug with or without platelet-rich fibrin.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age range: 20 to 80 years.
  • Patients must require tooth extraction (molars) as a result of caries, periodontal disease, tooth fracture or deemed unrestorable.
  • Non-infected sockets with intact buccal bone (≥1.5 mm in thickness measured through calipers)
  • Patients interested in implant placement following tooth extraction.

Exclusion criteria

  • Allergies or hypersensitivities to study related medications.
  • Hematologic disorders/blood dyscrasias.
  • Active infectious diseases of any kind.
  • Liver or kidney dysfunction/failure.
  • Uncontrolled diabetes (HbA1c > 8).
  • Active cancer treatment - such as active chemotherapy or radiation therapy.
  • Taking medications that will affect their bone healing (for example, bisphosphonates, Long-term NSAIDs use, Steroid).
  • Metabolic bone diseases that affect bone healing such as osteoporosis.
  • Pregnant or lactating women (self-reported).
  • Smoke 10 or more cigarettes per day (self-reported).
  • Poor oral hygiene.
  • Systemic diseases that compromise the immune system
  • Anti-coagulant therapy

Treatment and study plan

Socket preservation

Procedure

After tooth extraction, the extraction socket will be filled with a collagen plug in one group or a platelet-rich fibrin plug in the other.

Primary outcomes

  1. Alveolar ridge dimension changes

    Time frame: 4 months

    Digitally measured alveolar ridge dimension changes in mm^2 using cone-beam computed tomography

  2. Soft tissue dimension changes

    Time frame: 4 months

    Digitally measured soft tissue changes in mm^2 using intraoral scans

Secondary outcomes

  1. Histological bone density.

    Time frame: 4 months

    Histomorphometry.

  2. Presence of bone turnover proteins.

    Time frame: 4 months

    Immunohistochemistry.

  3. Amount of growth factors

    Time frame: At baseline surgery

    Growth factors (PDGF, VEGF and TGF b1) from PRF obtained from drawn blood

  4. Wound healing index

    Time frame: 1 week, 2 weeks, 4 weeks, and 8 weeks

    Wound healing index (WHI) according to the following scheme: Score "1" for uneventful wound healing with no gingival edema, erythema, suppuration, discomfort or barrier exposure; Score "2" for uneventful wound healing with slight gingival edema, erythema, or discomfort but no suppuration; Score "3" for poor wound healing with significant gingival edema, erythema, discomfort, loss of barrier or any suppuration.

Sponsors and collaborators

Lead sponsor

University of Michigan

Other

Registry information

Important dates

Study start
2025
Primary completion
2026
Study completion
2027
First posted
Jun 17, 2025
Registry last updated
Jul 15, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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