7 Clinical Trials for Various Conditions
The investigators hypothesize that brief, daily application of HFA will increase the efficiency of clear aligner treatment by altering PDL metabolism without increasing pain or discomfort. The investigators will divide subjects into 5 groups changing clear aligners at different time intervals with or without HFA application for 5 minutes/day to assess the effect on: time intervals between aligners, cytokine activity, and pain perception.
The purpose of this research study is to see if Nighttime Aligners (worn 10-12 hours per day or night) are effective and safe for tooth movement and if so, how they compare with the standard Daytime aligners (worn 20-22 hours per day), in adults and children from 12 years of age and older. It will investigate the efficacy and performance of the treatments, as well as the safety of the investigational device and comparator. The main objectives are: * Comparison between the two groups concerning actual vs planned tooth movements (measured by changes in tooth position) * Comparison between the two groups concerning the incidence of device or dental related AEs. * Overall dentist and participant satisfaction with the treatment. Participants will: * Be given orthodontic aligner therapy with the Daytime (20-22h/day) or Nighttime (10-12h/day) Aligners (randomly assigned) * Attend approximately 5 study during approximately 8-10 months
Misalignment of teeth and jaws (also called malocclusion) is a common life altering problem facing many individuals with Osteogenesis Imperfecta (OI). The presence of Dentinogenesis Imperfecta in teeth of OI individuals makes the use of conventional orthodontics in the form of braces very challenging. Clear aligners are newer form of orthodontic treatment and is less invasive than braces. Therefore, the aim of our study is to evaluate the efficiency and safety of using Invisalign clear aligners for orthodontic treatment in individuals with Osteogenesis Imperfecta. We seek individual with Osteogenesis Imperfecta, with mild to moderate malocclusion and no prior history of orthodontic treatment. This study will be held at three sites - McGill University, University of California Los Angeles and National Institute of Dental and Craniofacial research. This study will for the first time, help define guidelines for safe and efficient orthodontic treatment using clear aligners in individuals with Osteogenesis Imperfecta. If successful, this approach can rapidly be implemented into clinical practice, as the Invisalign system is readily available to orthodontists.
Pressure Pain Threshold (PPT) is defined as the minimum force applied to an area that is perceived as pain. PPT is considered an objective measurement tool to assess pain levels. Studies have assessed the difference in pain levels between clear aligners and fixed appliances using subjective pain scales. No study has utilized PPT to evaluate the difference in pain between aligners and fixed braces at different time points. This study will aim to compare the self- reported and experimental pain perception between the clear aligner and fixed appliance therapies during the phase of crown alignment and to assess how long pain is perceived in the following five days from the adjustment of the appliance.
The AcceleDent® device has been introduced to the specialty of orthodontics in order to reduce treatment time. The theory behind AcceleDent® is that high frequency vibratory forces (30Hz) delivered to the teeth will stimulate the bone remodeling that is necessary for tooth movement to occur more quickly. Additionally, one claim of the AcceleDent® product is that it may reduce pain and discomfort during orthodontic treatment. This study will be a parallel group, triple-blind randomized clinical trial comparing two groups of subjects with 12 participants in each group. Subjects will be randomized to receive one of two vibrational units, which will differ in frequency and/or amplitude of vibration. The subjects will be asked to change their aligners every week instead of every 2 weeks, which is common with Invisalign.
The purpose of this study is to examine the amount of tooth movement achieved over time between subjects undergoing aligner treatment using a pulsation device known as AcceleDent® Aura with those not using the device.
To demonstrate that growing teenagers which present up to full cusp Class II malocclusions can be treated using the Invisalign System.