Clinical trials: Retrognathia
Prognathism, Retrognathia
Transoral Versus Transbuccal Placement of Bicortical Screws During Orthognathic Surgery
Bicortical screws have been widely used for mandibular osteosynthesis during orthognathic surgery.Transoral placement of bicortical screws is a rigid fixation method in orthognathic surgery, which is less often used.
- Conditions
- Prognathism, Retrognathia, Jaw Abnormalities
- Trial name
- NCT02658305
- Where
- Belgium
- Volunteers
- 509 people
- Sponsor
- AZ Sint-Jan AV
Anterior Crossbite, Class III Malocclusion
Evaluation of the Treatment Effects of Tooth Borne Versus Bone-anchored Protraction Procedures in Class III Patients With Maxillary Deficiency
The aim of this prospective randomized controlled clinical study is to compare the effects of bone-anchored and tooth borne maxillary protraction on dentofacial structures in skeletal Class III patients.
- Conditions
- Anterior Crossbite, Class III Malocclusion, Maxillary Deficiency
- Trial name
- NCT04863404
- Testing
- Face mask with hybrid-hyrax, Face mask with conventional bonded RME
- Where
- Turkey (Türkiye)
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Izmir Katip Celebi University
Maxillar Hypoplasia
Evaluation of Masticatory Muscle Activity in Pediatric Patients Undergoing Rapid Maxillary Expansion
Transverse maxillary constriction is a malocclusion that subsists when the distance between the upper first molars palatal cuspids is lower than the distance between the lower first molars vestibular center fossae.
- Trial name
- NCT05820438
- Testing
- Electromyography
- Where
- Italy
- Volunteers
- 34 people
- Sponsor
- University of Pavia
Class III Malocclusion in Growing Patients
Changes Following the Treatment of Lower Jaw Protrusion Using Two Appliances
An in vivo study evaluating the efficacy of the Tandem appliance in the treatment of maxillary deficiency in growing patients compared to the conventional facemask appliance treatment.
- Trial name
- NCT02144324
- Testing
- Tandem Appliance
- Where
- Syria
- Volunteers
- 30 people
- Sponsor
- Damascus University
Posterior Crossbite, Maxilla; Hypoplasia
Leaf Expander Versus Hyrax Expander in Mixed Dentition Patients With Posterior Crossbite.
Design: Two-arm parallel randomized clinical trial in mixed dentition (6-12 years). Arms: (1) 9 mm, 900 g leaf expander; (2) 9 mm Hyrax expander.
- Trial name
- NCT07301918
- Testing
- The Leaf expander, Hyrax expander
- Where
- Egypt
- Volunteers
- 30 people
- Sponsor
- Cairo University
Class III Malocclusion, Maxillary Deficiency
Evaluation of Pain and Functional Impairments When Treating Class III Malocclusion Using Two Treatment Procedures
A clinical examination of each recalled candidate patient will be carried out at Adib Al Lahham Centre at the Ministry of Health Damascus to ensure that he/she meets the inclusion criteria.
- Trial name
- NCT06877780
- Testing
- RMR with SME, BAIMT with RME
- Where
- Syria
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Damascus University
Maxillofacial Abnormalities, Jaw Abnormalities
Digital Occlusal Wafer Versus Waferless Distal Segment Repositioning for BSSO in Skeletal Mandibular Deformities
Research studies continues to attempt testing modifications to refine the treatment protocols through computer assisted design or computer-generated surgical Wafer splints, have greatly revolutionized the incorporation of digital…
- Conditions
- Maxillofacial Abnormalities, Jaw Abnormalities, Prognathism, Retrognathia
- Trial name
- NCT05151042
- Testing
- wafer-less approach, Computer Guided orthognathic surgery using occlusal wafers
- Where
- Egypt
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Cairo University
Maxillary Deficiency, Cleft Lip and Palate
Evaluation of Maxillary Expansion Using Clear Aligners' Therapy in Patients With Cleft Lip and Palate at the Mixed Dentition Stage
The goal of this clinical trial is to learn if the aligners can expand upper dental arch in patients with cleft lip and palate at age of 6-8 years old to correct their collapsid archs.
- Trial name
- Pilot (NCT06994754)
- Testing
- clear aligners
- Where
- Egypt
- Volunteers
- 10 people
- Sponsor
- Cairo University
Maxilla; Hypoplasia
Transverse Maxillary Expansion With a Segmental Le Fort I Osteotomy or Surgically Assisted Rapid Maxillary Expansion (SARME)
To assess transverse dental and skeletal expansion and stability after SLFIO with no fixation of the palatal vault compared to stabilization of the palatal vault with an autogenous bone block graft or fixation of the palatal…
- Trial name
- NCT03511989
- Testing
- Bone borne distractor, Tooth borne distractor, Segmental LF1 Osteotomy group 1
- Where
- Denmark
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Aalborg University Hospital
Class II Malocclusion, Dentofacial Deformities
Comparative Evaluation of Functional and Aesthetic Outcomes of Box and Mini-Wing Genioplasty Techniques
This retrospective cohort study aims to compare the effects of Mini Wing and Box genioplasty performed in conjunction with bimaxillary orthognathic surgery on upper airway area and soft tissue profile in adult patients with…
- Conditions
- Class II Malocclusion, Dentofacial Deformities, Retrognathia
- Trial name
- MWBOX (NCT07724743)
- Testing
- Mini Wing Genioplasty, Box Genioplasty
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people
- Sponsor
- Istanbul Medipol University Hospital
Surgical Complication, Paresthesia
Trial of Bilateral Sagittal Split Osteotomy Induced Paresthesia Using Ultrasonic vs. Reciprocating Saw Instrumentation
The aim of this prospective study is to analyze the postoperative paresthesias experienced in patients who undergo bilateral sagittal split osteotomies (BSSO) using an ultrasonic saw, versus a reciprocating saw.
- Conditions
- Surgical Complication, Paresthesia, Fracture, Nerve Injury
- Trial name
- NCT05205616
- Testing
- Sonopet ultrasonic saw, Reciprocating saw
- Where
- 2 sites in United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Malocclusion, Angle Class II, Retrognathism
The Effect of Functional Treatment of Patients With Backward Positioned Chins on the Jaw Joint and Movements
Patients with class II malocclusion and retrognathic mandibles will be treated using functional appliances and asses the remodeling that is expected to occur in the temporomandibular joint (TMJ) using cone-beam computed…
- Conditions
- Malocclusion, Angle Class II, Retrognathism, TMJ
- Trial name
- NCT03645343
- Testing
- Activator, Twin Block
- Where
- Syria
- Volunteers
- 66 people
- Sponsor
- Damascus University
Face Mask, Rapid Maxillary Expansion
Class III Malocclusion and ALT-RAMEC
Diverse viewpoints exist regarding the correlation between the conventional rapid maxillary expansion (RME) and facemask approach and the alternative RME and facemask hybrid technique (Alt-RAMEC) in terms of the degree of…
- Conditions
- Face Mask, Rapid Maxillary Expansion, Maxillary Retrognathism
- Trial name
- NCT05913076
- Testing
- Delaire Face Mask (M0774-01, Leone S.p.A., Florence, Italy) for first group, Delaire Face Mask (M0774-01, Leone S.p.A., Florence, Italy) for second group, Delaire Face Mask (M0774-01, Leone S.p.A., Florence, Italy) for third group
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Trakya University
Maxillary Deficiency
Comparative Results of Maxillary Deficiency Treatment by Tongue Plate and Facemask in Growing Patients
A new appliance will be used to transfer the tongue force during its physiological activity to advance the nasomaxillary complex; this method will be compared with the traditional method which uses a Facemask appliance.
- Trial name
- NCT00519415
- Testing
- Tongue plate, Facemask
- Where
- Iran
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Shahid Beheshti University of Medical Sciences
Maxillary Retrusion
Radiological Evaluation of Anterior Maxilla For Immediate Implant Placement
According to the literature age and gender may be associated with differences in skeletal size, anatomy and architecture in humans.
- Trial name
- NCT07133503
- Testing
- radiological evaluation
- Where
- 2 sites in Turkey (Türkiye)
- Volunteers
- 278 people, healthy volunteers welcome
- Sponsor
- TC Erciyes University
Class III Malocclusion, Skeletal Malocclusion
Comparison of Skeletal Anchorage Versus Conventional Tooth-Borne Face Mask Therapy Following the Alt-RAMEC Protocol
This study investigated two different methods of maxillary protraction in growing patients with skeletal Class III malocclusion characterized by maxillary deficiency.
- Conditions
- Class III Malocclusion, Skeletal Malocclusion, Maxillary Deficiency
- Trial name
- MiniFM (NCT07279662)
- Testing
- Skeletal Anchorage Supported Maxillary Protraction, Tooth-Borne Maxillary Protraction Appliance
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people
- Sponsor
- Murat Kaan Erdem
Maxillary Deficiency
Paranasal Sinus Volumes of Maxillary Deficiency Patients Requiring Le Fort Osteotomy
The present study aims to compare ethmoid, sphenoid and maxillary sinus volumes of patients with maxillary deficiency requiring Le Fort osteotomy with healthy patients, by employing computed tomography imaging.
- Trial name
- NCT04637568
- Testing
- Computerized tomography
- Where
- Turkey (Türkiye)
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Ankara University
Mandibular Retrognathism
Comparison of Distalization and Functional Appliance Therapy
The correction of Class II malocclusion is one of the most common problems facing the orthodontist, with an estimated one-third of all orthodontic patients treated for this condition.
- Trial name
- NCT03252782
- Testing
- Herbst Appliance, Distal Jet Appliance
- Volunteers
- 30 people
- Sponsor
- Izmir Katip Celebi University
Mandibular Retrognathia
The Effect of Mandibular Advancement With Clear Aligners on Maxillary and Mandibular Volumes
The aim of this study is to compare the effectiveness of two different orthodontic treatment methods used in patients with skeletal Class II malocclusion, a condition in which the lower jaw is positioned backward.
- Trial name
- NCT07056829
- Testing
- Mandibular Advancement Appliance (Invisalign MA), Activator Appliance
- Where
- Turkey (Türkiye)
- Volunteers
- 55 people
- Sponsor
- Batman University
Maxillary Hypoplasia, Retrognathia
CT Analysis of the Anatomy of the Nasotracheal Intubation Pathway of Patients With Indication of Maxillary Advancement
Differences in nasotracheal intubation pathway anatomy will be observed between healthy patients and patients with maxillary retrusion. The results will clarify the nasotracheal intubation tube preference for these patients.
- Conditions
- Maxillary Hypoplasia, Retrognathia, Intubation, Tomography
- Trial name
- NCT03570528
- Where
- Turkey (Türkiye)
- Volunteers
- 187 people, healthy volunteers welcome
- Sponsor
- Ankara University