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NCT06897852
Accuracy of Two Different Photogrammetric Software for Three Dimensional Facial Model Reconstructions Compared with Direct Facial Anthropometry.
NCT04347018
The purpose of this study is to compare the Full Fixed Preadjusted appliances (regular braces) when to the BRIUS system.
NCT06315348
Research Question While the reduction in treatment times and the patient satisfaction after periodontally accelerated osteogenic orthodontics (PAOO) are well sustained in the scientific literature, there is still controversy regarding if grafting leads to i) change of the periodontal phenotype and ii) greater stability of post-orthodontic treatment outcomes, highlighting the need of controlled clinical trials. Aims of the Project The aim of this randomized clinical trial (RCT) is to compare piezocision-assisted orthodontics, concomitant to soft tissue grafting (volume-stable collagen matrix), with piezocision-assisted orthodontics, concomitant to bone grafting with a xenograft and a native collagen membrane, in orthodontic non-growing patients. The primary aim will be to determine the impact of this surgical protocol on the hard and soft tissue changes occurring on the buccal aspect of the dentition. Secondary objectives will include the assessment of the comparative impact on treatment duration, rate of tooth movements, presence of root resorption, periodontal parameters, bone level changes and patient-reported outcome measures (PROMs) between the two groups.
NCT04828096
One of major challenges in orthodontics is to inhibit relapse and ensure stability of treatment outcomes. Retention is the phase of orthodontic treatment that attempts to keep teeth in the corrected position after correction with orthodontic braces. Without retention there is a tendency for the teeth to return to their initial position (1). Retention is usually necessary to overcome the elastic recoil of the periodontal supporting fibers and to allow remodeling of the alveolar bone. The bonded orthodontic lingual retainer constructed from composite and orthodontic wires provides an esthetic and efficient system for maintained retention and has been shown to be an effective means of retaining aligned anterior teeth in the post treatment position in the long term. This has been in popular use as a method of retention since the late 1970s (2). The traditional retainers, which are still in use, are multi-strand stainless steel retainers such as Penta-one® 0.0215 (Masel Orthodontics, Carlsbad, CA, USA). The main problem with multistrand stainless steel retainers is their high rate of failure. Clinical studies indicate that 5% to 37% of mandibular retainers fail during retention in some form, either bond failure or wire breakage (3-5). Reliance Orthodontic Products, Inc. (Itasca, IL, USA) recently introduced a bonded retainer system (Ortho-Flextech™ chain). This retainer's bonding is claimed to be quick and easy by reducing chairside time and eliminating laboratory costs (6). One other recently introduced retainer is Memotain™ (CA-Digital in Mettmann, Germany). Memotain is a CAD/CAM fabricated lingual retainer made of 0.014 X 0.014-inch rectangular nickel-titanium. The wire is highly flexible and custom cut to precisely adapt to the patient's lingual tooth anatomy. According to manufacturer, Memotain offers numerous perceived advantages to traditional multistranded lingual wires, including no need for wire measuring or bending, individually optimized placement, greater accuracy of fit, tighter interproximal adaptation, less tongue irritation, better durability, and resistance to microbial colonization (6). However, randomized clinical trials are necessary to determine whether these advantages are substantiated with scientific data. A recent review by the Cochrane group concluded that to date there is insufficient evidence to single out any particular retention strategy as the preferred method: it was recommended that future studies should include true randomization, reporting of dropouts, adequate sample size calculation, and a minimum follow-up period of 3 months (8). Thus, the aims of this multicenter, randomised controlled trial are: * To compare and evaluate the effectiveness and failure rate of Penta-one multistrand, Ortho-Flextech and Memotain retainers with each other * To compare the possible complications between the three retainers over time * To establish the cost-effectiveness of the three retainers * To evaluate the effectiveness of sandblasting in the retention of the wires
NCT03991221
Dental occlusion is the reciprocal confrontation of the two dental arches. The child has two set of temporary and permanent teeth and passes through different stages of dentition during which dental, skeletal or functional abnormalities may appear. Dental malocclusion is defined as an incorrect position of the teeth in the bone base, as well as the incoordination of the teeth of the opposite arches or the displacement of the maxillary and mandibular skeletal bases. When a malocclusion is detected during clinical examination, patients are referred to an orthodontic specialist. The interception in orthodontics is carried out during a growing period; it consists of correcting or reducing malocclusions in evolution and eliminating the functional causes to prevent aggravation of skeletal and dental abnormalities. An epidemiological study conducted in France on 789 children showed that 37.4% had at least one type of dental malocclusion. In 2010, a study of 5988 French children showed that 14% of them had received orthodontic treatment. These studies reveal a discrepancy between treatment needs and treatments conducted. In addition, certain dental malocclusions and skeletal disorders, such as lateral and anterior crossbite, require early orthodontic treatment in order to avoid aggravation of the occlusion disorder and induction of craniofacial growth disorders. Unfortunately these discrepancies are not always detected by the caregivers (pediatrician, general dentist, pediatric dentist). A schematic representation of malocclusions in temporary and mixed dentition requiring orthodontic interception has been developed by the investigator's team to provide a simple visual means of identifying these dental and skeletal disorders in order to improve early screening by practitioners involved in the mandatory medical follow-up of children.
NCT05978856
A clinical study to evaluate the accuracy of computer software in predicting soft tissue profile changes in patients undergoing fixed orthodontic treatment
NCT05614635
The aim of this study is to gather clinical data related to the use of Plastalgin and Plastalgin Fast, in order to comply with the new medical device regulation. The target population for this study is the same as the intended population specified in the study device's instructions for use: children from 5 years old and adults. Collection, recording, and reporting of data will be accurate and will ensure the privacy, health, and welfare of participating patients during and after the study
NCT04631419
This study is conducted to evaluate the effects of flapless laser corticotomy on the rate of canine retraction.
NCT03906084
The aim of the present study was to compare, a standard efficient technique in accelerating OTM as surgical corticotomy as a gold standard versus surgical corticotomy combined with LLLT in an attempt for further acceleration of OTM.