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CompletedNCT04151147Updated Nov 5, 2019

Effect of CGF on Frequency of Alveolar Osteitis Following Partially Erupted Mandibular Third Molar Surgery

An interventional study of Concentrated Growth Factor (Test group) and Non-Concentrated Growth Factor (Control group) in Alveolar Osteitis and Impacted Tooth, sponsored by Ege University. Completed at 1 site in Turkey. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-11-05.

Sponsored by Ege University · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 1 year 9 months after the study started (first participant enrolled Jan 2018, registered Oct 2019).
Phase
Not applicable
Study type
Interventional
Enrollment
70
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The aim of this prospective study was to assess the effectiveness of concentrated growth factors (CGFs) in preventing the development of alveolar osteitis (AO) after the extraction of partially-erupted mandibular third molars.

This study was designed as a randomized controlled clinical trial. In each case, one socket received CGFs and the other served as a control. The predictor variable was the CGFs application and the sides were categorized as 'CGFs' and 'non-CGFs'. The outcome variable was the development of AO during the first postoperative week. Also, demographic variable included age and gender was noted.

Read the detailed description

The investigators designed and implemented a randomized single-blind clinical trial.Randomization was performed by simple coin toss to select the side of CGFs fibrin gel placement before the commencement of third molar surgery. In this way, the sides in each patient were randomly divided into 2 study groups:

Group I (test) - with CGFs placed in the extraction socket Group II (control) - without CGFs placement All operations were performed under local anesthesia by the same surgeon. An envelope flap was raised to provide access. Bone removal was done with the help of stainless steel burs. Constant irrigation with saline was used while removing bone to prevent thermal necrosis. Third molar was luxated with the help of straight elevator and then extracted with the help of third molar forceps. After extraction, any remains of the dental follicle were removed and the extraction sockets were irrigated with 60 mL of sterile saline. To prevent the flap laceration, bone contouring was also performed under sterile saline irrigation. CGFs fibrin gel was then randomly placed into one socket and the opposite side was considered as the control. Finally, wound closure was completed with silk suture.

The primary outcome variable was AO, classified as present or absent.It is characterized by postoperative pain in and around the extraction side, which increases in severity within first week after the extraction, accompanied by a partially or totally disintegrated blood clot within the alveolar socket, with or without halitosis. Other defining symptoms that have been reported in the literature are radiating pain towards the temporal region and ear, inflamed gingival margin, ipsilateral regional lymphadenopathy and, less commonly, low-grade fever.

02

Conditions studied

  • Alveolar Osteitis
  • Impacted Tooth

Keywords

  • Third molar surgery
  • Alveolar osteitis
  • Platelet concentrates
03

In context

Dry Socket

46 studies on the registry are indexed under Dry Socket; 10 are open to participants now.

This study's enrollment of 70 is above the median of 60 across 41 interventional studies indexed under Dry Socket.

Browse Dry Socket studies →

Lead sponsor

Ege University is the lead sponsor of 377 studies on the registry; 48 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
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients Age ≥ 18 years of age
  • Willing and able to provide
  • Ability to cooperate with the requirements of the study protocol
  • Healthy patients without medical diseases or a history of bleeding problems
  • Patients with the need of extraction of third molars
  • The third molars had to be symmetrical, partially-erupted and in the Class I, Level B according to Pell \& Gregory classification and in the vertical angulations according to Winter's classification.

Exclusion criteria

Exclusion Criteria:

  • Patients who have pre-existing abscess or cellulitis, acute pericoronitis, or pre-existing conditions such as an odontogenic cyst or tumour associated with their third molars
  • Patients who were pregnant and breastfeeding
  • Patients with drug usage such as bisphosphonate, and antidepressants
  • Patients who had a smoking habit
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

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You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

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05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
70 participants (actual)

Study arms

  • Experimental
    CGF application in the extraction socket

    Partially impacted third molar was extracted with the help of straight elevator and third molar forceps. After extraction, any remains of the dental follicle were removed and the extraction sockets were irrigated with 60 mL of sterile saline. CGF fibrin gel was then randomly placed into one socket and wound closure was completed with silk suture.

    Procedure: Concentrated Growth Factor (Test group)

  • Experimental
    non-CGF application in the extraction socket

    Opposite side of the patient was considered as the control. After extraction of the third molar, dental follicle were removed and to prevent the flap laceration, bone contouring was also performed under sterile saline irrigation. Finally, wound closure was completed with silk suture.

    Procedure: Non-Concentrated Growth Factor (Control group)

Interventions

  • ProcedureConcentrated Growth Factor (Test group)

    The patients' blood was collected in 9 ml glass tubes and immediately centrifuged to prevent coagulation in special centrifuge device. The CGF program was set up as follows: accelerated for 30 seconds so as to reach 2700 rpm, rotated for 2 minutes, then reduced to 2400 rpm, then rotated again for 4 minutes and accelerated to 2700 rpm, rotated for 4 minutes, then accelerated to 3000 rpm for 3 minutes, and decelerated for 36 seconds to stop. The middle layer in the tube was separated by the ''Buffy coat'' containing the CGFs fibrin gel using forceps and scissor. Then, this fibrin gel was inserted in the extraction cavity.

  • ProcedureNon-Concentrated Growth Factor (Control group)

    Third molar extraction was performed under local anesthesia. Following the extraction, the socket was sutured and natural healing process was observed. This side was considered as a control group.

06

What researchers measure

Primary outcomes

  1. Presence of alveolar osteitis formation

    Clinical data was collected with regard to alveolar osteitis formation on the 3rd and 7th days after surgery with the following characteristics: 1) progressive and severe pain in and around the extraction side within first week; 2) partially or totally loss of blood clot and exposure of the alveolar bone with or without halitosis. Patients who met one of the criterias, were taken to be alveolar osteitis.

    Time frame: Change of alveolar osteitis formation at 7 days.

07

Study locations

1 site
  • Ege University
    İzmir, Bornova 35050, Turkey
08

References and documents

Publications

  • Ozveri Koyuncu B, Isik G, Ozden Yuce M, Gunbay S, Gunbay T. Effect of concentrated growth factors on frequency of alveolar Osteitis following partially-erupted mandibular third molar surgery: a randomized controlled clinical study. BMC Oral Health. 2020 Aug 17;20(1):222. doi: 10.1186/s12903-020-01210-7. PubMed 32807173 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 5, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04151147
Lead sponsor
Ege University
Responsible party
Gözde Işık (Principal Investigator, Ege University) — Principal investigator
First posted
Nov 5, 2019
Start date
Jan 2, 2018
Primary completion
Jul 15, 2018
Completion
Jul 30, 2018
Last update
Nov 5, 2019

Study contacts

Banu Özveri Koyuncu
study director · Ege University

Oversight

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

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