Effects of Vitamin D in Patients Undergoing Fixed Orthodontic Mechanotherapy (NCT07299552) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
Effects of Vitamin D in Patients Undergoing Fixed Orthodontic Mechanotherapy
Malaysia48 participantsStarted 2025-12-30
Plain-language summary
The goal of this interventional research is to determine the impact of vitamin D intake on substances in saliva, pain, tooth movement, and the density of the bone around teeth in patients during orthodontic treatment. It will compare the effects of vitamin D supplementation with a placebo to clarify its role in the aforementioned aspects of orthodontic care. The main questions it aims to answer are:
How does vitamin D supplementation affect salivary opiorphin levels in patients undergoing fixed orthodontic mechanotherapy at Specialist Hospital Universiti Sains Malaysia? What is the impact of vitamin D supplementation on pain perception during fixed orthodontic mechanotherapy? How does vitamin D supplementation influence the rate and quality of tooth movement in patients undergoing fixed orthodontic mechanotherapy? What is the relationship between salivary opiorphin levels and pain perception in patients supplemented with vitamin D during fixed orthodontic mechanotherapy? How does vitamin D supplementation affect changes in alveolar bone density during fixed orthodontic mechanotherapy? Researchers will provide vitamin D to the experimental group while the control group receives a placebo to see if vitamin D intake has an impact on substances in saliva, pain, tooth movement, and the density of the bone around teeth during orthodontic treatment.
Participants will:
Take vitamin D or a placebo every day for 4 months Visit the clinic once every 4 weeks for checkups and tests Participate in the study for a duration of up to 4 months
Who can participate
Age range
18 Years – 35 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Age Range: 18 to 35 years old. This age group is common and suitable for orthodontic treatment. During this period, skeletal remodeling is active, which is conducive to observing tooth movement and related physiological changes. It is also a stage where the regulatory effects of vitamin D on growth, development, and physiological functions are more pronounced.
. Orthodontic Requirement: Patients diagnosed with Class I malocclusion with extraction of all first premolars in both upper and lower arches, using MBT orthodontic brackets，and recruited from multiple operators.
. Health Status: Patients should be in good general health, without endocrine system diseases that affect calcium and phosphorus metabolism and bone metabolism (such as hyperthyroidism or hypothyroidism, parathyroid diseases, etc.). They should also have no severe liver or kidney diseases (since abnormal liver and kidney functions can interfere with the activation and metabolism of vitamin D), and no autoimmune diseases (as autoimmune abnormalities may affect the inflammatory response and tissue repair mechanisms, thus interfering with the experimental results).
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Salivary Opiorphin Levels During Fixed Orthodontic Mechanotherapy
Timeframe: Baseline assessment, followed by checkups every four weeks over the 4-month period
2
Pain Perception During Fixed Orthodontic Mechanotherapy
Timeframe: Baseline assessment, followed by checkups every four weeks over the 4-month period
3
Rate of Tooth Movement During Fixed Orthodontic Mechanotherapy
Timeframe: Baseline assessment, followed by checkups every four weeks over the 4-month period
4
Analyze the relationship between salivary opiorphin levels and pain perception in patients supplemented with vitamin D during fixed orthodontic mechanotherapy.
Timeframe: through study completion, an average of 1 year
5
Evaluate the effects of vitamin D supplementation on changes in alveolar bone density during fixed orthodontic mechanotherapy.
Timeframe: Baseline assessment, followed by a final checkup at the end of the 4-month period
. Medication History: Patients who have not taken any medications affecting calcium and phosphorus metabolism (such as bisphosphonates), bone metabolism (such as recombinant human growth hormone or other drugs that promote or inhibit bone growth), and pain perception (such as long-term use of opioid analgesics, antidepressants that affect neurotransmitters) within the past three months are eligible. This ensures that the experiment is not interfered with by external drug factors.
Exclusion criteria
. Oral Local Problems: Patients with uncontrolled acute or chronic oral inflammations are excluded, such as the acute stage of pericoronitis of wisdom teeth, severe gingivitis, or periodontitis in the progressive and destructive stage. Such inflammations can interfere with the reaction of orthodontic teeth to force and pain assessment. Those with oral mucosal lesions that affect the comfort of wearing orthodontic appliances and the stability of the oral microenvironment are also excluded.
. Systemic Diseases: Besides the aforementioned endocrine, liver and kidney, and autoimmune diseases, patients with severe cardiovascular diseases (who may have difficulty tolerating the stimulation of orthodontic force application and the regular follow-up process), hematological diseases (which affect blood coagulation and tissue repair and increase the risks of orthodontic treatment), malignant tumors (undergoing radiotherapy or chemotherapy that affects systemic metabolism and immunity) are also excluded. These systemic diseases will introduce too many complex variables and affect the observation of the single factor effect of vitamin D.
. Special Physiological Periods or Conditions: Pregnant or lactating women are excluded because of the significant fluctuations in hormones and the special nutritional requirements of the fetus or infant, which change the pattern of calcium and phosphorus metabolism. Patients with a recent history of major traumas such as fractures, whose bodies are in a critical period of trauma repair and bone metabolism is in a special stress state, are also not suitable for this experiment as it may interfere with the study of normal orthodontic bone remodeling.
. Poor Compliance: Patients who cannot be guaranteed regular follow-ups, take medications as prescribed, and cooperate with various examinations are excluded. For example, those with mental or psychological disorders that make it difficult to follow the medical plan, or those who are highly mobile and unable to maintain stable and continuous treatment and observation. Excluding such patients ensures the integrity and reliability of experimental data and the smooth progress of the experimental process.