View clinical trials related to Malocclusion.
Filter by:The main objective of this study is to quantify the distal movement of maxillary central incisors and molars achieved with infrazygomatic miniscrews in comparison with zygomatic miniplate anchorage.
The study aimed to clinically estimate an influence of a 635nm diode laser on the primary and secondary stability of orthodontic mini-implants placed in a maxilla, to assess mini-implants failure rate (mini-implant loss) and to evaluate a pain level after the treatment. The randomized clinical split-mouth trial included 15 subjects, 30 implants (Dual Top Anchor System, Seoul, Korea) with a diameter 1.4mm and length of 10mm. Mini-implants were placed in the area of the attached gingiva between the second premolar and first molar teeth 2 mm below the mucogingival junction of both sides of the maxilla in 20 patients (13 women and 7 men; age: 32.5 ± 6.1 years).
The study aimed to estimate clinically an influence of 635nm diode laser on the primary and secondary stability of orthodontic mini-implants placed in a maxilla, to assess mini-implants failure rate (mini-implant loss) and to evaluate a pain level after the treatment. The randomized clinical split-mouth trial included 15 subjects, 30 implants (Dual Top Anchor System, Seoul, Korea) with a diameter 1.4mm and length of 10mm. Mini-implants were placed in the area of the attached gingiva between the second premolar and first molar teeth 2 mm below the mucogingival junction of both sides of the maxilla in 15 patients.
The aim of the current clinical trial was to evaluate the effects of premolar extractions compared with non-extraction orthodontic treatment on the skeletal vertical dimension of the face. The null-hypothesis is that there is no difference in post-treatment skeletal vertical characteristics of normodivergent and hyperdivergent patients treated orthodontically with first premolar extractions compared with patients treated in non-extraction manner.
Incorporating wire threaded custom tunnel attachments with clear aligner therapy is a novel approach developed to address the shortcomings of the currently available orthodontic systems. This hybrid system is anticipated to take advantage of the benefits and overcome many of the limitations of traditional fixed buccal/lingual appliances and clear aligner therapy. The concept utilizes light arch wires to be threaded through computer designed, chairside-fabricated composite tunnel attachments to achieve better control of three-dimensional tooth movements not achievable by clear aligners, such as Invisalign® (Align Technology, Santa Clara, CA) alone. The superelastic feature of the arch wires allows delivery of more continuous forces than aligners alone, potentially permitting shorter duration of recommended aligner wear during orthodontic treatment. A virtual set-up would be used to plan the desired position of the teeth, which in turn will be used to customize the size and position of composite tunnel attachments based on how two round arch wires will pass through tubes within the attachments. The attachments can be placed on either the buccal or lingual surfaces of teeth, depending on clinical preferences and esthetic demands. This is achievable using in-house aligners, which will also allow the fabrication of aligners in the office or at a conventional orthodontic lab at a fraction of the cost of traditional clear aligners.
The patients who applied to the hospital for orthodontic treatment were asked various questions to evaluate their oral health related quality of life, malocclusions and self reported temporomandibular joint problems.
The investigators are studying how speech is effected by jaw and tooth position in jaw surgery patients. Eighty percent of our jaw surgery patients have speech pathologies, compared to five percent of the general population, but speech pathologists do not understand why. The investigators hypothesize that open bites and underbites prevent most patients from being able to pronounce words normally and surgical correction will lead to improvement in speech. Patients will be audio recorded speaking and patients' tongue gestures ultrasound recorded before and after their jaw surgeries to observe what changes occur in their speech and tongue movements.
Orthodontic build-ups are made by composite/resin material bonded to the palatal or occlusal surfaces of teeth (usually molars or incisors). Their primary purpose is to prevent heavy contact of the upper teeth with lower fixed appliances in patients with overbite reduction to avoid brackets detachment. These appliances disarticulate the posterior teeth, deprogram the masticatory muscles and allow for eruption, extrusion, and uprighting of the posterior teeth. Build-ups are usually placed in the first months of the fixed orthodontic treatment and contribute to increasing the perception of pain. In the orthodontic daily practice, the pain is the most frequent symptom during treatment and is the one that most frightens/worries the patients. Literature shows that fear of pain is one of the primary reasons that patients fail to seek orthodontic care. Pain has a negative effect on patients' compliance, oral hygiene, and missed appointments. Its effects on patients' daily lives is a major reason for discontinuance of orthodontic treatment. In the literature the prevention of pain and management of orthodontic builds-ups is a poorly analyzed topic, despite being a daily problem in orthodontic clinical practice. So, the aim of the present study is to investigate and analyze the perception of pain and function impairment with different type of build-ups (anterior or posterior) to identify an efficient clinical management protocol and an effective pain and discomfort prevention strategy.
Early orthodontic pain is usually caused by the insertion of elastomeric separators to the mesial and distal of the tooth to be banded in order to create adequate space for proper placement. Recent studies have demonstrated that the pain reaches its peak at 24 hours and then gradually decreases within 7 days The intensity of this pain is sometimes perceived as extremely high to cause a significant number of patients to discontinue the treatment. Nonsteroidal anti-inflammatory drugs, which block the prostaglandin synthesis through inhibiting the cyclooxygenase activity, is one of the most common methods used to manage the orthodontic pain. It has been reported that these drugs decrease the orthodontic tooth movement rate, in addition to many systemic side effects such as gastric and duodenal ulceration, coagulation disorders, congestive heart problems and allergic effect. The application of low-level laser therapy (LLLT) also reported being efficient in accelerating orthodontic tooth movement and in alleviating orthodontic pain without any apparent side effects. LLLT is thought to reduce the pain by increasing the local blood flow, inhibiting the secretion of inflammatory substances, inducing the release of neurotransmitters, altering the conduction and excitation of peripheral nerves and stimulating the endorphins release. On the other hand, literature review on the effectiveness of LLLT in alleviating orthodontic pain observed after elastomeric separator placement (ESP) exhibited conflicting results. While LLLT was found to be effective in some studies, the others refuted its effectiveness. When studies on alleviating orthodontic pain observed after ESP were reviewed, it was determined that the effects of many drugs and LLLT were evaluated subjectively by VAS. Furthermore, only in one study, the effects of ibuprofen and LLLT were compared using PGE2 levels in GCF and VAS. Based on that, this study was aimed to compare the effects of ibuprofen and LLLT in alleviating orthodontic pain observed after ESP through IL-1β and SP levels in GCF and VAS.
The study is to evaluate the effect of 3D printed modified Twin Block Appliance on skeletal Class II profile correction. The null hypothesis of this research is that use of 3D Printed Twin Block is not able to induce skeletal rather than dental effects for correction of the skeletal Class II malocclusion in comparison with untreated growing Class II control subjects.