Clinical trials: Negative Surgical Margins
Dental Crowding, Alveolar Bone Loss
Bone Level Changes Using Clear Aligners Compared to Fixed Appliances in Non-Extraction Treatment of Adults
This study compares two common ways of straightening teeth in adults who have mild-to-moderate crowding of the lower front teeth and do not need any teeth removed: clear aligners and traditional fixed braces.
- Conditions
- Dental Crowding, Alveolar Bone Loss, Malocclusion
- Trial name
- NCT07716007
- Testing
- Fixed orthodontic appliance, Clear aligners
- Where
- Egypt
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Future University in Egypt
Malocclusion, Clear Aligner Appliance
Impact of Aligner Replacement Protocols on Predictability of Planned Dental Movements: Evaluation of Double Aligner
The study will evaluate the impact of replacing aligners after 7 days with new aligners made of different materials on the predictability of planned dental movements.
- Conditions
- Malocclusion, Clear Aligner Appliance, Orthodontics, Tooth Movement
- Trial name
- NCT06882395
- Testing
- Group 1: FLX aligners for 10 days, Group 3: FLX aligners for 7 days, followed by new FLX aligners for 3 days., Group 2: FLX aligners worn for 7 days, followed by FLX35 aligners for 3 days.
- Where
- Brazil
- Volunteers
- 114 people, healthy volunteers welcome
- Sponsor
- Neodent
Conventional Clear Bottle, Opaque Weighted Bottle
Influence of Bottle-Type on Infant Feeding Behaviors
The objective of the proposed research is to conduct a within-subject, experimental study that will describe mothers' feeding practices during typical bottle-feeding conditions and will examine whether removal of visual cues…
- Trial name
- OBS (NCT02111694)
- Testing
- Bottle Type
- Where
- United States
- Volunteers
- 29 people, healthy volunteers welcome
- Sponsor
- Drexel University
Melasma
Combination Topical Cysteamine and Fractional 1927nm Low-Powered Diode Laser for Treatment of Facial Melasma
The primary objective of our study is to determine the efficacy of combined topical cysteamine cream with a 1927 diode non-ablative laser (Clear + Brilliant Permea®; Solta Medical, Inc.), compared to topical cysteamine (Cyspera)…
- Trial name
- NCT05656833
- Testing
- Fractional 1927nm Low-Powered Diode Laser, Topical Cysteamine
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- UnionDerm
White Spot Lesion of Tooth
Effect of Bioactive Resin Material Containing S-PRG Filler on White Spot Lesions
the effect of bioactive resin composite containing S-PRG filler will be tested as the material of choice for attachments bonded on teeth prior to the use of orthodontic clear aligners compared to the conventionally used flowable…
- Trial name
- NCT07715942
- Testing
- Bioactive resin composite containing S-PRG filler, Conventional flowable composite is used for the attachments for the clear orthodontic aligners
- Where
- Jordan
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Jordan University of Science and Technology
Clear Aligner Orthodontic Treatment, Composite Attachment
Tooth Discoloration and Chairside Handling Time (Bonding-Debonding) in Flowable Versus Packable Composites for Clear Aligner Bonded Attachments: A Randomized Clinical Trial
This randomized split-mouth clinical trial aims to compare two different composite materials used for bonding attachments in clear aligner orthodontic therapy.
- Conditions
- Clear Aligner Orthodontic Treatment, Composite Attachment, Color Stability of Enamel
- Trial name
- NCT07234149
- Testing
- flowable nanohybrid Composite Resin, Packable Microhybrid Composite Resin
- Where
- 2 sites in Iraq
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Sulaimani
Orthodontic Tooth Movement
Acceleration of Tooth Movement Using PRP and Photobiomodulation With Clear Aligners
This study compares the effectiveness of two adjunct therapies- photobiomodulation (low-level laser therapy) (PBM) and localized platelet-rich plasma (PRP) injections in accelerating orthodontic tooth movement.
- Trial name
- NCT07795073
- Testing
- Platelet Rich Plasma (PRP) injection, photobiomodulation (PBM) Therapy, clear aligner(12-hour wear protocol)
- Where
- Yemen
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Sana'a University
Malocclusion
Class II Correction Study Using the Invisalign System
To demonstrate that growing teenagers which present up to full cusp Class II malocclusions can be treated using the Invisalign System.
- Trial name
- NCT02376829
- Testing
- Invisalign System
- Where
- 10 sites in United States, Canada
- Volunteers
- 164 people, healthy volunteers welcome
- Sponsor
- Align Technology, Inc.
Colonoscopy
A Low-residue Diet vs Clear Liquid Diet as a Bowel Colonoscopy Preparation With Polyethylene Glycol (PEG)
This was a randomized, endoscopists' blinded comparison of bowel colonoscopy cleansing and tolerability of a prespecified low-residue diet compared with a clear liquid diet and Polyethylene Glycol bowel preparation.
- Trial name
- PEG (NCT03358537)
- Testing
- Clear Liquid Diet, Low-residue Diet
- Volunteers
- 215 people, healthy volunteers welcome
- Sponsor
- Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran
Crowding of Anterior Mandibular Teeth
Evaluating the Efficacy of Micro-Osteoperforations Technique on the Orthodontic Tooth Movement Acceleration in Moderate Mandibular Anterior Crowding Cases Treated With Clear Aligners
Patients with moderate mandibular anterior crowding will be treated in this study. The efficacy of micro-osteoperforations technique by special drill in accelerating orthodontic tooth movement during clear aligners therapy will…
- Trial name
- NCT05492773
- Testing
- Micro-osteoperforations Technique, Active comparater
- Where
- Syria
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Hama University
Rheumatoid Arthritis
Consortium for the Longitudinal Evaluation of African Americans With Early Rheumatoid Arthritis (The CLEAR Registry)
Rheumatoid arthritis (RA) is a long-term autoimmune disease that is characterized by pain, stiffness, inflammation, swelling, and sometimes destruction of joints.
- Trial name
- CLEAR (NCT00815425)
- Where
- United States
- Volunteers
- 1,613 people, healthy volunteers welcome
- Sponsor
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
Myopia
Characterization of the Corneal Biomechanics of Patients Treated by Corneal Lenticule Extraction for Advanced Refractive Correction (CLEAR) to Correct Myopia
This study aims to perform biomechanical tests on extracted CLEAR lenticles that are routinely discarded after surgery. The investigators also aim to perform Brillouin microscopy to get an in-vivo assessment of the patient's…
- Trial name
- CLEAR Biomech (NCT04817592)
- Testing
- Corneal lenticule extraction for advanced refractive correction (CLEAR)
- Where
- Switzerland
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Bern
Communication
Feasibility Study of Use and Acceptability of New Clear Communication of Lab Test Results (CCLR) Letter for Older Adults
This study will try out a new way of writing a blood test result letter to patients explaining the results in a way to help them understand what the results mean and any next steps to be taken.
- Trial name
- NCT06971887
- Testing
- Clear Communication of Lab Test Result letter
- Where
- United States
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- University of Massachusetts, Worcester
Gingivitis, Dental Plaque
Clear Aligner Cleaning: Brushing, Chlorhexidine, and BlueM Effects on Oral Microbial Ecology and Periodontal Indices
This randomized crossover study will assess how three aligner-cleaning methods affect early supragingival oral microbial ecology and periodontal health in adults using clear aligners.
- Trial name
- NCT07307716
- Testing
- Mechanical toothbrushing (fluoride toothpaste), Chlorhexidine mouthwash (0.2%), Oxygen-based cleanser
- Where
- Saudi Arabia
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- Riyadh Elm University
Orthodontic Aligners
The Efficiency of Clear Aligners in Maxillary Molar Distalization: A Randomized Clinical Trial.
The aim of this study is to evaluate the accuracy of clear aligners on the amount of the maxillary molar distalization.
- Trial name
- Aligner (NCT06330571)
- Testing
- Molar distalization by aligners with attachment
- Where
- Egypt
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Patient Comfort, Malocclusion
Comparison of Patient-Reported Comfort Between Two Clear Aligner Trimming-Line Designs: A Split-Mouth Study
The trimming-line design of clear aligners (supragingival versus juxtagingival) is a routine clinical decision whose influence on patient-reported comfort has not been established; available evidence on aligner comfort derives…
- Conditions
- Patient Comfort, Malocclusion, Oral Health
- Trial name
- COMFORT-ALIGN (NCT07660809)
- Testing
- Supragingival trimming-line design, Juxtagingival festooned trimming-line design
- Where
- Romania
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Targu Mures
Gastric Residual Volume
Feasibility of 1 Hour Clear Fluid Fasting Prior to Paediatric GA
The study is aim to investigate the appropriate fasting time for clear fluid in paediatric patients who plan for elective minor surgery.
- Trial name
- NCT03952260
- Testing
- Fasting time for clear fluid prior to anaesthesia
- Where
- Malaysia
- Volunteers
- 56 people, healthy volunteers welcome
- Sponsor
- Ma Tai Jiun
Renal Cell Carcinoma (Kidney Cancer), Clear Cell Renal Cell Carcinoma
Prospective Study of Cadonilimab With Lenvatinib in Renal Cell Carcinoma
This is a prospective, open, multi-cohort phase II study The study included a screening period (participants signed informed consent no more than 28 days before the first treatment in the study), a treatment period (treatment…
- Trial name
- NCT07909265
- Testing
- Cadonilimab,Lenvatinib
- Where
- China
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Cancer Institute and Hospital, Chinese Academy of Medical Sciences
White Spot Lesion
Evaluation of Enamel Demineralization During Clear Aligner Orthodontic Treatment
Development of white spot lesions (enamel demineralization) will be evaluated quantitatively during clear aligner orthodontic treatment compared to conventional fixed appliances using quantitative light induced fluorescence (QLF)
- Trial name
- NCT04107012
- Testing
- Orthodontic treatment with clear aligner
- Volunteers
- 49 people, healthy volunteers welcome
- Sponsor
- Jordan University of Science and Technology
Colorectal Cancer
Split Dose Polyethylene Glycol (PEG) + Clear Fluids Versus Split Dose PEG + Low-Residue Diet
The objective of the study is to examine the effect of adding a strict low-residue lunch on the day before colonoscopy has on clinical efficacy and patient tolerability of bowel preparation, with patients receiving split-dose…
- Trial name
- BP (NCT01610895)
- Testing
- Split-dose PEG Based Lavage (2L + 2L) with Low-Fibre Lunch Dietary instructions, Split-dose PEG Based Lavage (2L + 2L) with Standard Dietary Instructions
- Where
- Canada
- Volunteers
- 345 people, healthy volunteers welcome
- Sponsor
- University of Calgary