Investigating the link between levonorgestrel intrauterine system and temporomandibular disorders

Is the Incidence of Temporomandibular Disorder Increased in the Use of Levonorgestrel Intrauterine System

Not applicable Interventional Marmara University · NCT06500390

This study is trying to see if using a specific birth control device called the levonorgestrel intrauterine system is linked to jaw joint problems in women.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment100 (estimated)
Ages18 Years to 45 Years
SexFemale
SponsorMarmara University Academic / other
Locations1 site (Istanbul, Maltepe)
Trial IDNCT06500390 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to explore the potential relationship between the use of the levonorgestrel intrauterine system (LIU) and the occurrence of temporomandibular joint disorders (TMD) in women. It involves two groups: one consisting of women who have used the LIU for at least three months and a control group of healthy women with regular menstrual cycles. The study will compare the frequency of temporomandibular dysfunction between these two groups to determine if there is a significant association. A total of 60 participants will be examined for their temporomandibular joint and masticator muscles.

Who should consider this trial

Good fit: Ideal candidates for this study are women aged 18-50 who have been using a levonorgestrel intrauterine device for at least three months.

Not a fit: Patients with craniofacial syndromes, head and neck trauma history, or other specific exclusions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide insights into the safety and side effects of the levonorgestrel intrauterine system, particularly regarding its impact on temporomandibular disorders.

How similar studies have performed: While this study explores a specific association, similar studies have not extensively investigated the relationship between levonorgestrel intrauterine systems and temporomandibular disorders, making this approach relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Being a woman
* Having used an intrauterine device for at least 3 months
* Being between the ages of 18-50
* Being in American Society of Anesthesiologists-1 and American Society of Anesthesiologists-2 systemic status

Exclusion Criteria:

* Patients with craniofacial syndrome
* Patients with a history of head and neck trauma
* Isolated muscle tenderness or previous surgery on TMJ
* Patients with rheumatological disorders
* Patients with an additional gynecological disease other than endometriosis
* Lack of cooperation with the patient.

Where this trial is running

Istanbul, Maltepe

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Levonorgestrel Adverse ReactionTemporomandibular Joint DisordersTemporomandibular DisorderMirenaLevonorgestrelIntrauterine systemTemporomandibular disorder
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.