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RecruitingNCT07869030Updated Oct 15, 2026

Melatonin Effect on Immediate Dental Implants in the Posterior Mandible

An interventional study of 1% w/w Melatonin Gel and Standard Immediate Dental Implant Placement in Dental Implant, Immediate Dental Implant Placement and Alveolar Bone Loss, sponsored by Future University in Egypt. Recruiting at 1 site in Egypt. Open to participants aged 20 Years to 50 Years. Per ClinicalTrials.gov, last updated 2026-10-15.

Sponsored by Future University in Egypt · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 11 months after the study started (first participant enrolled Nov 2025, registered Oct 2026).
  • Started Nov 2025; still recruiting 11 months later.
Updated Oct 9, 2026Newly registeredGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
16
Allocation
Randomized
Ages
20 Years to 50 Years
Sex
All
01

Study summary

This pilot randomized controlled clinical trial aims to evaluate the feasibility, clinical safety, and preliminary radiographic osteogenic effects of applying topical 1% w/w melatonin gel during immediate implant placement in the posterior mandible. The study assesses surgical feasibility, soft-tissue healing, bone density, buccal bone thickness, and implant stability to provide preliminary effect size and variance estimates to inform future definitive clinical trials.

Read the detailed description

This study is a pilot randomized controlled clinical trial conducted at Future University in Egypt. Given the technical complexity of immediate implant placement in the posterior mandible combined with customized healing abutments, this pilot study evaluates a sample of 16 participants (8 per group) to assess protocol feasibility, evaluate soft-tissue healing profiles, and estimate outcome variability.

Study Design \& Intervention:

  • Participants: Healthy adults (20-50 years) requiring immediate molar implant placement in the posterior mandible.
  • Test Group: Immediate implant placement with application of 1% w/w topical melatonin gel into the peri-implant socket gap.
  • Control Group: Immediate implant placement using standard surgical protocol without melatonin gel.
  • Socket Management: Both groups utilize a customized healing abutment to seal the socket.

Outcome Assessment:

  • Radiographic Outcomes: Bone density (in Hounsfield Units, HU) and buccal bone thickness (in mm) measured via Cone Beam Computed Tomography (CBCT) at baseline, immediately postoperatively, and at 6 months.
  • Clinical Outcomes: Implant stability measured via AnyCheck (IST values) at placement, 1.5 months, and 3 months.
  • Feasibility \& Safety: Evaluation of post-operative soft-tissue/fascia healing around customized healing abutments and surgical procedure feasibility.
02

Conditions studied

  • Dental Implant
  • Immediate Dental Implant Placement
  • Alveolar Bone Loss
  • Bone Density
  • Osseointegration

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Keywords

  • Melatonin
  • Immediate Implant Placement
  • Osseointegration
  • AnyCheck
  • Implant Stability Test
  • IST
  • Bone Density
  • Dental Implants
  • Alveolar Bone
  • Posterior Mandible
  • Buccal Bone Thickness
  • Pilot Study
  • Customized Healing Abutment
03

In context

Alveolar Bone Loss

304 studies on the registry are indexed under Alveolar Bone Loss; 77 are open to participants now.

This study's planned enrollment of 16 is below the median of 25 across 261 interventional studies indexed under Alveolar Bone Loss.

Browse Alveolar Bone Loss studies →

Lead sponsor

Future University in Egypt is the lead sponsor of 103 studies on the registry; 30 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
No

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 aged 20-50 years.
  • Indicated for extraction and immediate implant placement in the posterior mandibular molar region.
  • Good oral hygiene and compliance with postoperative instructions.
  • Non-smokers or light smokers (≤10 cigarettes/day).
  • Patients who provide written informed consent and agree to attend follow-up visits.

Exclusion criteria

Exclusion Criteria:

  • Patients with systemic diseases affecting bone metabolism or wound healing (e.g., uncontrolled diabetes, osteoporosis).
  • Heavy smokers (>10 cigarettes/day).
  • History of head and neck radiotherapy or chemotherapy.
  • Pregnant or lactating women.
  • Sites with acute infection, cystic lesions, or pathology.
  • Bruxism or parafunctional habits.
  • Use of medications affecting bone turnover (e.g., bisphosphonates, corticosteroids).
  • Poor compliance or unwillingness to return for follow-up visits.
05

Study design

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

Study arms

  • Experimental
    Melatonin Group

    Participants undergo immediate dental implant placement in the posterior mandible with application of 1% w/w melatonin gel into the extraction socket gap prior to implant insertion, sealed with a customized healing abutment.

    Drug: 1% w/w Melatonin Gel · Procedure: Standard Immediate Dental Implant Placement

  • Active comparator
    Control Group

    Participants undergo immediate dental implant placement in the posterior mandible following standard surgical protocol without melatonin gel application, sealed with a customized healing abutment.

    Procedure: Standard Immediate Dental Implant Placement

Interventions

  • Drug1% w/w Melatonin Gel

    Topical application of 1% w/w melatonin gel into the peri-implant socket gap immediately prior to dental implant insertion.

  • ProcedureStandard Immediate Dental Implant Placement

    Standard surgical placement of an immediate dental implant into a fresh extraction socket in the posterior mandible, using a customized healing abutment to seal the socket.

06

What researchers measure

Primary outcomes

  1. Change in Peri-Implant Bone Density

    Change in peri-implant bone density measured in Hounsfield Units (HU) using Cone Beam Computed Tomography (CBCT) scan cross-sections at the peri-implant defect area.

    Time frame: Baseline (immediately post-operatively) and 6 months post-operatively.

  2. Change in Buccal Bone Thickness

    Change in buccal bone plate thickness measured in millimeters (mm) on CBCT cross-sectional views at predefined levels relative to the implant shoulder.

    Time frame: Baseline (immediately post-operatively) and 6 months post-operatively.

Secondary outcomes

  1. Change in Primary and Secondary Implant Stability

    Implant stability measured using the AnyCheck device on the Implant Stability Test (IST) scale. IST values range from 30 to 99, where higher values indicate higher implant stability.

    Time frame: Baseline (immediately after implant insertion), 1.5 months, and 3 months post-operatively.

07

Study locations

1 of 1 sites recruiting
  • Department of Oral and Maxillofacial Surgery, Faculty of Oral and Dental Medicine - Future University in Egypt
    Cairo, 43528, Egypt
    • George Waleed Alhajj, B.D.S · Contact · georgealhajj1@gmail.com · +201550820559
    • George Waleed Alhajj, BDS, MSc Candidate. · Principal investigator
    • Lobna Abdelaziz, Professor, PhD · Sub investigator
    • Amr Maged, Associate Professor, PhD · Sub investigator
    • Aya Magdy Abdel Rady, Lecturer, PhD · Sub investigator
    Recruiting
08

References and documents

Publications

  • Chen ST, Wilson TG Jr, Hammerle CH. Immediate or early placement of implants following tooth extraction: review of biologic basis, clinical procedures, and outcomes. Int J Oral Maxillofac Implants. 2004;19 Suppl:12-25. PubMed 15635942 ↗
  • S DS, Kamath D, Sinha A, Kamath D. Melatonin: The potential avenues in dentistry. F1000Res. 2025 Jan 14;14:77. doi: 10.12688/f1000research.159942.1. eCollection 2025. PubMed 40125522 ↗
  • Hosseinzadeh A, Bagherifard A, Sheibani M, Karimi-Behnagh A, Reiter RJ, Mehrzadi S. Significant Interaction between Melatonin and Titanium Bone Implants: Available Evidence and Future Research Directions. Curr Pharm Biotechnol. 2025;26(9):1258-1270. doi: 10.2174/0113892010300967240610111644. PubMed 38919083 ↗
  • Ravi Kiran S, Bammidi N, Kumar AK, Kumar PS, Karnam Y. Evaluation of the Effect of Topical Melatonin Application on Immediately Placed Dental Implants Using Cone Beam Computed Tomography (CBCT). Cureus. 2022 May 23;14(5):e25233. doi: 10.7759/cureus.25233. eCollection 2022 May. PubMed 35755538 ↗
  • El-Gammal MY, Salem AS, Anees MM, Tawfik MA. Clinical and Radiographic Evaluation of Immediate Loaded Dental Implants With Local Application of Melatonin: A Preliminary Randomized Controlled Clinical Trial. J Oral Implantol. 2016 Apr;42(2):119-25. doi: 10.1563/aaid-joi-D-14-00277. Epub 2015 Jun 23. PubMed 26103559 ↗
  • Yan W, Li C, Song X, Zhou W, Chen Z. Prophylactic melatonin for delirium in critically ill patients: A systematic review and meta-analysis with trial sequential analysis. Medicine (Baltimore). 2022 Oct 28;101(43):e31411. doi: 10.1097/MD.0000000000031411. PubMed 36316858 ↗
  • Zhao Y, Shao G, Liu X, Li Z. Assessment of the Therapeutic Potential of Melatonin for the Treatment of Osteoporosis Through a Narrative Review of Its Signaling and Preclinical and Clinical Studies. Front Pharmacol. 2022 May 11;13:866625. doi: 10.3389/fphar.2022.866625. eCollection 2022. PubMed 35645810 ↗
  • Huang X, Chen W, Gu C, Liu H, Hou M, Qin W, Zhu X, Chen X, Liu T, Yang H, He F. Melatonin suppresses bone marrow adiposity in ovariectomized rats by rescuing the imbalance between osteogenesis and adipogenesis through SIRT1 activation. J Orthop Translat. 2022 Oct 27;38:84-97. doi: 10.1016/j.jot.2022.10.002. eCollection 2023 Jan. PubMed 36381247 ↗
  • Maria S, Samsonraj RM, Munmun F, Glas J, Silvestros M, Kotlarczyk MP, Rylands R, Dudakovic A, van Wijnen AJ, Enderby LT, Lassila H, Dodda B, Davis VL, Balk J, Burow M, Bunnell BA, Witt-Enderby PA. Biological effects of melatonin on osteoblast/osteoclast cocultures, bone, and quality of life: Implications of a role for MT2 melatonin receptors, MEK1/2, and MEK5 in melatonin-mediated osteoblastogenesis. J Pineal Res. 2018 Apr;64(3):10.1111/jpi.12465. doi: 10.1111/jpi.12465. Epub 2018 Jan 17. PubMed 29285799 ↗
  • Vaseenon S, Chattipakorn N, Chattipakorn SC. Effects of melatonin in wound healing of dental pulp and periodontium: Evidence from in vitro, in vivo and clinical studies. Arch Oral Biol. 2021 Mar;123:105037. doi: 10.1016/j.archoralbio.2020.105037. Epub 2021 Jan 6. PubMed 33440268 ↗
  • Hardeland R, Pandi-Perumal SR. Melatonin, a potent agent in antioxidative defense: actions as a natural food constituent, gastrointestinal factor, drug and prodrug. Nutr Metab (Lond). 2005 Sep 10;2:22. doi: 10.1186/1743-7075-2-22. PubMed 16153306 ↗
  • Tian Y, Ming J. Melatonin inhibits osteoclastogenesis via RANKL/OPG suppression mediated by Rev-Erbalpha in osteoblasts. J Cell Mol Med. 2022 Jul;26(14):4032-4047. doi: 10.1111/jcmm.17440. Epub 2022 Jun 21. PubMed 35726597 ↗
  • Hu W, Deng C, Ma Z, Wang D, Fan C, Li T, Di S, Gong B, Reiter RJ, Yang Y. Utilizing melatonin to combat bacterial infections and septic injury. Br J Pharmacol. 2017 May;174(9):754-768. doi: 10.1111/bph.13751. Epub 2017 Mar 21. PubMed 28213968 ↗
  • Favero G, Franceschetti L, Bonomini F, Rodella LF, Rezzani R. Melatonin as an Anti-Inflammatory Agent Modulating Inflammasome Activation. Int J Endocrinol. 2017;2017:1835195. doi: 10.1155/2017/1835195. Epub 2017 Oct 1. PubMed 29104591 ↗
  • Cuzzocrea S, Reiter RJ. Pharmacological actions of melatonin in acute and chronic inflammation. Curr Top Med Chem. 2002 Feb;2(2):153-65. doi: 10.2174/1568026023394425. PubMed 11899098 ↗
  • Permuy M, Lopez-Pena M, Gonzalez-Cantalapiedra A, Munoz F. Melatonin: A Review of Its Potential Functions and Effects on Dental Diseases. Int J Mol Sci. 2017 Apr 19;18(4):865. doi: 10.3390/ijms18040865. PubMed 28422058 ↗
  • Sola-Ruiz MF, Perez-Martinez C, Labaig-Rueda C, Carda C, Martin De Llano JJ. Behavior of Human Osteoblast Cells Cultured on Titanium Discs in Relation to Surface Roughness and Presence of Melatonin. Int J Mol Sci. 2017 Apr 13;18(4):823. doi: 10.3390/ijms18040823. PubMed 28406458 ↗
  • Gomez-Moreno G, Aguilar-Salvatierra A, Boquete-Castro A, Guardia J, Piattelli A, Perrotti V, Delgado-Ruiz RA, Calvo-Guirado JL. Outcomes of topical applications of melatonin in implant dentistry: a systematic review. Implant Dent. 2015 Feb;24(1):25-30. doi: 10.1097/ID.0000000000000186. PubMed 25621548 ↗
  • Roth JA, Kim BG, Lin WL, Cho MI. Melatonin promotes osteoblast differentiation and bone formation. J Biol Chem. 1999 Jul 30;274(31):22041-7. doi: 10.1074/jbc.274.31.22041. PubMed 10419530 ↗
  • Cardinali DP, Ladizesky MG, Boggio V, Cutrera RA, Mautalen C. Melatonin effects on bone: experimental facts and clinical perspectives. J Pineal Res. 2003 Mar;34(2):81-7. doi: 10.1034/j.1600-079x.2003.00028.x. PubMed 12562498 ↗
  • Cutando A, Gomez-Moreno G, Arana C, Munoz F, Lopez-Pena M, Stephenson J, Reiter RJ. Melatonin stimulates osteointegration of dental implants. J Pineal Res. 2008 Sep;45(2):174-9. doi: 10.1111/j.1600-079X.2008.00573.x. Epub 2008 Feb 19. PubMed 18298460 ↗
  • Botticelli D, Berglundh T, Buser D, Lindhe J. The jumping distance revisited: An experimental study in the dog. Clin Oral Implants Res. 2003 Feb;14(1):35-42. doi: 10.1034/j.1600-0501.2003.140105.x. PubMed 12562363 ↗
  • Albrektsson T, Branemark PI, Hansson HA, Lindstrom J. Osseointegrated titanium implants. Requirements for ensuring a long-lasting, direct bone-to-implant anchorage in man. Acta Orthop Scand. 1981;52(2):155-70. doi: 10.3109/17453678108991776. PubMed 7246093 ↗

Individual participant data

Plan to share: Yes — De-identified individual participant data (IPD) regarding implant stability values (IST as measured by the AnyCheck device) and bone density values (from CBCT analysis) will be shared. Data will be made available to researchers who provide a methodologically sound proposal for secondary analysis. Data access requests should be directed to the principal investigator.

Supporting information: Study protocol, Statistical analysis plan, Informed consent form

Time frame: Data will be available starting 6 months after the publication of the final study results and will remain accessible for 5 years.

Access criteria: De-identified individual participant data (IPD) will be available to researchers who provide a methodologically sound proposal to achieve the aims in the approved proposal. Proposals should be submitted to the principal investigator via email. Access will be provided following the signing of a data access agreement to protect participant privacy.

09

Updates

2 registry updates since Sep 25, 2026
Registered
First appeared on the registry. No changes since
Oct 9, 2026
Show all 2 updates
  1. Oct 15, 2026
    Minor edits only
    + 1 other change: identifiers
  2. Oct 9, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07869030
Responsible party
George Waleed Alhajj (Postgraduate Researcher, Department of Oral and Maxillofacial Surgery., Future University in Egypt) — Principal investigator
First posted
Oct 9, 2026
Start date
Nov 6, 2025
Primary completion
Jun 2027 (estimated)
Completion
Jun 2027 (estimated)
Last update
Oct 15, 2026

Oversight

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

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