Tooth and Tissue Sample Collection During Wisdom Teeth Removal

  • End date
    Dec 31, 2029
  • participants needed
  • sponsor
    National Institute of Dental and Craniofacial Research (NIDCR)
Updated on 8 December 2021
tooth extraction
dental caries
oral surgery
dental exam
wisdom teeth removal
Accepts healthy volunteers


  • The third molars (wisdom teeth) normally grow in during late adolescence or early adulthood. Many people need or choose to have these teeth removed with oral surgery. Normally, the removed teeth and tissue are thrown away as medical waste. However, oral health researchers want to collect the teeth and tissue for research. They also want to encourage dentists at the National Institutes of Health to improve their skills in oral surgery. This study will collect the teeth and tissue of people who need to have oral surgery to remove their wisdom teeth.
  • To provide continued dental skills training for dentists at the National Institutes of Health.
  • To collect teeth and tissue samples following wisdom tooth removal surgery.
  • Individuals between 16 and 50 who need to have their wisdom teeth removed.
  • This study will involve a minimum of three visits. There will be a screening visit, a surgery visit, and at least one follow-up visit.
  • Participants will be screened with a physical exam and medical history. A full dental exam with x-rays will be given to evaluate the need for surgery.
  • At the second visit, participants will have oral surgery to remove their wisdom teeth. The teeth and tissue removed during the surgery will be collected for study.
  • Participants will receive drugs to control the pain after surgery. They will also be able to contact a dentist if there are any problems.
  • Between 7 and 21 days after surgery, participants will have a followup visit to check the healing. If they are having no problems, this will be the last visit. If there are any postsurgery issues, they will be scheduled for additional visits as needed.



The objective of this protocol is to evaluate and provide treatment for subjects who have a clinical indication for the routine extraction of dental third molar wisdom teeth with the aim to allow investigators to maintain their expertise in dental clinical care, gain additional knowledge about oral health and to utilize surgical waste collected from these patients for research studies.

Study Population

The protocol will enroll a convenience sample of 10000 subjects ages greater than or equal to 16-50 in need of clinically indicated, routine extraction of third molars.


This is an evaluation, treatment and training protocol. Subjects will receive standard evaluation and treatment for clinically indicated, routine extraction of third molars. Subjects will report to the NIDCR dental clinic for at least three visits. The first visit will be a screening evaluation to determine the clinical need for third molar extraction and protocol eligibility. Eligible subjects will return for a second visit for third molar extraction. Oral specimens removed during the standard procedure of third molar extraction will be distributed for research. A third visit will be scheduled approximately one week after surgery for a post-operative clinical evaluation. Data collection will include demographics, pain management, medication regimen and adverse events to examine its effect on clinical outcomes

Outcome Measures

There is no research planned under this protocol. However, data is collected for purposes of research and clinical quality assurance. If trends emerge that warrant further exploration, outcome measures will be described when IRB approval or determination of exemption is requested to carry out the project.

Condition Disease, Impacted tooth, Teeth, Tooth disorder, Stomatognatic, impacted teeth, other disease, disease or disorder
Treatment Third Molar Removal
Clinical Study IdentifierNCT01805869
SponsorNational Institute of Dental and Craniofacial Research (NIDCR)
Last Modified on8 December 2021


Yes No Not Sure

Inclusion Criteria

Ages greater than or equal to 16-50
Clinical evidence of need (dental decay, bony or soft tissue impaction, orthodontic need) for third molar extraction as determined by medical, dental, and radiographic evaluation
Willing to allow for the collection of waste tissue (e.g., teeth, alveolar bone, excessive gingival tissue) extracted to be used for research
In good general health as defined by the American Society of Anesthesiologists (ASA) status I or II
Able to understand and sign an informed consent

Exclusion Criteria

Pregnant or nursing women
Unable to have third molar extraction as determined by NIDCR surgeon/dentist, due to medical conditions (beyond ASA I or II), complexity of the surgery, or history that precludes safe outpatient conscious sedation. These clinical decisions will be based on the risks and benefits related to the surgery
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How to participate?

Step 1 Connect with a study center
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer to help accelerate the development of new treatments and to get notified about similar trials.

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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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