30 completed, 5 not yet recruiting, 4 recruiting, 3 active not recruiting. 46 Not applicable.
| Phase | Trials | Status |
|---|---|---|
| Not applicable | 46 | Completed 30, Not yet recruiting 5, Recruiting 4, Active not recruiting 3, Unknown 3, Enrolling by invitation 1 |
Follow Crowding: new trials by email Literature Review of Crowding trials Research Report on Crowding
Tick up to 5 trials to compare them side by side (eligibility, arms, endpoints, adverse events) in a Literature Matrix.
| Trial | Phase | Status | Sponsor | Enrollment | Start | Updated |
|---|---|---|---|---|---|---|
| Timing, Trajectories and Prediction in Severe Dental Crowding: The Create SPACE (cSPACE) Early first premolar extraction with observation, Early first premolar extraction with planned fixed orthodontic treatment - Crowding of Teeth, Malocclusion; Displaced Teeth | Not applicable | Not yet recruiting | Vastra Gotaland Region | 300 | 2027-03-01 | 2026-11-02 |
| Effect of Different Adhesive Systems on White Spot Lesions During Fixed Orthodontic Treatment Self-etch adhesive, One-Step Adhesive, Conventional Bonding Technique - Malaligned Teeth, Crowding of Teeth | Not applicable | Not yet recruiting | Foundation University Islamabad | 34 | 2027-01-15 | 2026-08-10 |
| Orthodontic Treatment Outcomes of Self Ligating System Compared to Clear Aligner System self ligating bracket, Clear aligner - Angle Class I Maloclussion, Dental Crowding | Not applicable | Not yet recruiting | University of Baghdad | 42 | 2026-09-15 | 2026-07-07 |
| Clinical Performance of Direct-Printed Versus Thermoformed Aligners Direct-Printed Aligner, Thermoformed aligner - Angle Class I Malocclusion, Dental Crowding | Not applicable | Recruiting | University of Baghdad | 34 | 2026-06-01 | 2026-06-09 |
| Treatment Outcome of Elastomeric and Nickel-Titanium Separators in Tooth Separation Elastomeric separators, Nickel-Titanium separators - Dental Crowding, Malocclusion, Angle Class I | Not applicable | Not yet recruiting | 3D-Aligners | 30 | 2026-06-01 | 2026-05-15 |
| Accuracy and Periodontal Outcomes of Three Interproximal Enamel Reduction Techniques During Clear Aligner Therapy Manual Arm, Motor Driven Arm, Abrasive Arm - Dental Crowding,Interproximal Enamel Reduction, Malocclusion, Angle's Class | Not applicable | Not yet recruiting | Riyadh Elm University | 75 | 2026-03-01 | 2026-01-30 |
| The Predictability of Directly Printed Versus Thermoformed Clear Aligners Direct-printed aligner (Graphy), Thermoformed aligner - Class I Malocclusion, Crowded Teeth | Not applicable | Enrolling by invitation | University of Baghdad | 36 | 2026-02-15 | 2026-04-15 |
| Clinical Performance of the I-arch System During the Initial Stage of Orthodontic Treatment The use of 0.016×0.014 copper nickel titanium arch wire during the alignment stage., Use of 0.014- then 0.016-inch heat-activated nickel titanium arch wire during the alignment stage. - Effectiveness of the I-arch System | Not applicable | Recruiting | Tabark H. Omran | 34 | 2025-12-01 | 2026-04-22 |
| A Comparative Study Between Modified Miniscrew-Assisted Rapid Palatal Expander And Modified Rapid Palatal Expander in Molar Distalization Using Cone- Beam Computed Tomography Group A: Modified Miniscrew-Assisted Rapid Palatal Expander (MARPE), Group B: Modified Rapid Palatal Expander (RPE) - Malocclusion, Class I/II, Crowding | Not applicable | Active not recruiting | Al-Azhar University | 24 | 2025-11-01 | 2025-12-24 |
| Hyrax Vs. Invisalign Palatal Expander Clinical Study Removable Rapid Palatal Expander, Banded Palatal Expander - Malocclusions, Narrow Maxilla | Not applicable | Recruiting | Align Technology, Inc. | 36 | 2024-10-25 | 2024-12-04 |
| Bone Level Changes Using Clear Aligners Compared to Fixed Appliances in Non-Extraction Treatment of Adults Fixed orthodontic appliance, Clear aligners - Dental Crowding, Alveolar Bone Loss | Not applicable | Completed | Future University in Egypt | 20 | 2024-08-15 | 2026-07-21 |
| Bracket Positioning Techniques and Quality of Orthodontic Finishing Smile Arc Protection (SAP) bracket positioning, Smile Arc and Marginal Ridge Approach (SAMRA) bracket positioning; Procedure, McLaughlin-Bennett-Trevisi (MBT) chart bracket positioning - Malocclusion, Angle Class I, Dental Crowding | Not applicable | Completed | Future University in Egypt | 39 | 2024-07-01 | 2026-07-16 |
| Evaluating the Clinical Efficacy of Collagen Scaffold (Ossix VOLUMAX) With Piezo-Surgical Decortication in Enhancing Orthodontic Treatment Outcomes: A Randomized Controlled Trial Piezocision with ribose cross-linked collagen matrix (Ossix® Volumax), control - Dental Crowding, Gingival Recession | Not applicable | Recruiting | NMSI DENTMASTER | 70 | 2024-06-25 | 2025-07-31 |
| A Prospective , Split-mouth, Clinical Study of Orthodontic Titanium Miniscrews With Machined and Acid-etched Surfaces. miniscrews placement - Malaligned Teeth, Crowding | Not applicable | Completed | Foundation University Islamabad | 40 | 2024-06-20 | 2026-10-01 |
| A Study to Evaluate the Relationship Between Two Bracket System and Their Contribution to Initial Alignment of Maxillary Anteriors - De Crowding, Smile Arc Protection. Pitts 21 bracket system, MBT bracket system - Dental Crowding, Smile Arc Correction | Not applicable | Completed | Srinivas College of Dental Sciences | 30 | 2024-03-02 | 2026-07-17 |
| Comparison of Alignment Efficiency, Arch Dimensional Changes, and Passive Extraction Space Closure Between Self-Ligating and Conventional Brackets Self-Ligating Brackets (SLB), Conventional Bracket - Dental Crowding, Passive Extraction Space | Not applicable | Completed | Saidu College of Dentistry | 70 | 2024-02-01 | 2026-03-31 |
| Comparing the Alignment Efficiency of Three Types of Nickel-titanium Archwires orthodontic treatment with fixed appliances - Crowding of Anterior Mandibular Teeth | Not applicable | Unknown | Ziauddin University | 60 | 2023-05-01 | 2023-04-21 |
| Self-ligating vs Conventional Brackets and Labial Bone Thickness During Crowding Correction in Adults Self-ligating orthodontic brackets, Conventional orthodontic brackets - Malocclusion Class I, Crowding of Teeth | Not applicable | Completed | Future University in Egypt | 20 | 2023-03-12 | 2026-10-16 |
| Early Orthodontic Treatment of Dental Crowding Quad-helix - Dental Crowding | Not applicable | Active not recruiting | University of Helsinki | 60 | 2022-11-18 | 2025-07-08 |
| Evaluation of Treatment Outcome of Lower Incisors Crowding Using Clear Aligners With Laser Acceleration . Low-Level Laser acceleration, clear aligner therapy - Tooth Movement | Not applicable | Completed | Huda Abdelhakim | 22 | 2022-10-25 | 2024-07-30 |
Showing 20 of 46. Sign in to see all of them.
Malocclusion (15) · Malocclusion, Angle Class I (7) · Emergencies (2) · Pain (2) · Alveolar Bone Loss (1) · Amblyopia (1) · Ankle Injuries (1) · Anodontia (1) · Gingival Recession (1) · Gingivitis (1) · Periodontal Diseases (1) · Personal Satisfaction (1) · Surgical Wound (1) · Tooth Diseases (1)
Behavior (46) · Spatial Behavior (46) · Stomatognathic Diseases (23) · Tooth Diseases (21) · Malocclusion (6) · Pathological Conditions, Signs and Symptoms (5) · Mouth Diseases (4) · Neurologic Manifestations (3) · Periodontal Diseases (3) · Signs and Symptoms (3) · Disease Attributes (2) · Gingival Diseases (2) · Pathologic Processes (2) · Periodontal Atrophy (2) · Wounds and Injuries (2)
Orthodontic Appliances, Fixed (7) · Drug Interactions (1) · Low-Level Light Therapy (1) · Observation (1) · Orthodontic Appliances, Removable (1) · Orthodontic Brackets (1) · Orthodontics (1) · Piezosurgery (1)
Damascus University (12) · Future University in Egypt (4) · University of Baghdad (3) · Foundation University Islamabad (2) · 3D-Aligners (1) · Ahmed Talaat Hussein Ali (1) · Ain Shams University (1) · Al-Azhar University (1) · Align Technology, Inc. (1) · Anglia Ruskin University (1) · Ardentis Cliniques Dentaires (1) · Bezmialem Vakif University (1) · Centre Hospitalier de Saint-Brieuc (1) · Faculty Sao Leopoldo Mandic Campinas (1) · Huda Abdelhakim (1)
Syria (12) · Egypt (8) · Iraq (4) · Pakistan (4) · India (2) · Turkey (Türkiye) (2) · United States (2) · Canada (1) · Finland (1) · France (1) · Russia (1) · Saudi Arabia (1) · South Korea (1) · Switzerland (1) · United Kingdom (1)
Mohammad Y Hajeer, DDS MSc PhD (5) · Ahmad S Burhan, PhD. (3) · Mohammad Y Hajeer, DDS,MSc,PhD (3) · Samer T Jaber, DDS,MSc (2) · Abd Alrahman Qusaibati, DDS (1) · Abdulwahab Ahmed Alamri (1) · Ahmad S Burhan, DDS MSc PhD (1) · Ahmed T Ali, Demonstrator (1) · Bassel Brad, DDS MSc PhD (1) · Ching-Chang Ko, DDS, PhD (1) · Hallaj I Alsino, DDS (1) · Heba M Al-Ibrahim, DDS,MSc (1) · Heidi Arponen, DDS (1) · Issam Khoury, DDS MSc PhD (1)
PMID 10613941, PMID 10818378, PMID 15056110, PMID 1554175, PMID 16436790, PMID 17868386, PMID 18456146, PMID 18540011, PMID 18617108, PMID 18617110, PMID 20685517, PMID 21175021, PMID 22135148, PMID 22812378, PMID 23273363, PMID 23810039, PMID 23953094, PMID 24182579, PMID 24207160, PMID 24355870, PMID 25603272, PMID 25758457, PMID 26599124, PMID 26718375, PMID 26942200, PMID 27592083, PMID 27894540, PMID 29602338, PMID 30516419, PMID 30991984, PMID 37167078, PMID 37777351, PMID 42602182, PMID 7663253, PMID 8433468
2019 (1)