Download or read book Clinical Implications of Maxillary Skeletal Expander Placement in Microscrew Assisted Rapid Palatal Expansion Treatment written by Hannah Bodnar and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The specialty of orthodontics aims to optimize patients' skeletal and dental relationships, creating a harmonious orofacial complex and improving facial aesthetics and occlusal function. One common orthodontic problem is transverse maxillary constriction. Clinically, a transverse deficiency in the upper jaw presents as a narrow palate, dental crowding, crossbite, or a combination of these findings. If this orthodontic problem is diagnosed during the primary or mixed dentition years, it can be readily corrected with rapid palatal expansion. However, adult patients may also present with transverse maxillary constriction, which at this stage of skeletal maturation, requires more invasive treatment. Two treatment options that can address transverse deficiency in non-growing patients are surgically-assisted rapid palatal expansion (SARPE) and microimplant-assisted-rapid-palatal Expansion (MARPE). The MARPE technique involves the use of a maxillary skeletal expander (MSE) appliance anchored to the maxilla with mini-screws, applying expansile forces directly to the skeleton, rather than distributing them across the palate and dentition. Symmetric mid-palatal sutural separation is the anticipated therapeutic effect; however, midfacial changes may occur at other circummaxillary sutures. MARPE treatment outcomes must be evaluated clinically and radiographically. CBCT is the radiographic imaging modality of choice for patients treated with MARPE because of the effects that occur in all three planes of space. Mid-palatal suture measurements, and an abundance of additional information, can be obtained from 3D imaging analysis. The current evidence base surrounding clinical considerations of MSE placement for MARPE therapy is limited. The primary goal of this study was to assess if the skeletal position of MSE mini-screw/temporary anchorage device (TAD) placement influences the magnitude of mid-palatal suture separation and/or is associated with asymmetric skeletal changes during MARPE therapy, using CBCT imaging. We hypothesized that significant differences in mini-screw angulation relative to the palatal plane and the anteroposterior position of the MSE appliance in the hard palate may be associated with asymmetric mid-palatal suture separation. Subjects were grouped based on magnitude of asymmetric separation at the mid-palatal suture. Circummaxillary suture separation symmetry was compared between groups, along with anteroposterior positioning of the appliance, and mini-screw angulation. Our data analyses showed that the only statistically significant correlation for right and left suture separation occurred at the medial pterygoid plate suture in subjects with symmetric mid-palatal suture separation. Analysis of MSE placement and mini-screw angulation in all subjects revealed that the anteroposterior position of the mini-screws is associated with asymmetric expansion, while TAD angulation was not significant. Our findings provide guidance for clinicians' placement of the MSE appliance in the hard palate. Careful planning and execution of MARPE therapy is likely to lead to improved predictability of mid-palatal suture separation and subsequent changes to other circummaxillary structures.
Download or read book Evaluation of Surgically Assisted Rapid Maxillary Expansion and Orthodontic Treatment written by Anders Magnusson and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract in English and Swedish.
Download or read book Short term and Long term Effects of Rapid Maxillary Expansion written by Christopher Cameron and published by . This book was released on 2000 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of the Magnitude and Asymmetry of Micro Implant Assisted Rapid Maxillary Expansion written by Islam Elkenawy and published by . This book was released on 2020 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Micro-implant assisted rapid palatal expander such as the Maxillary Skeletal Expander (MSE) have been utilized to achieve skeletal expansion as an alternative to surgically assisted expansion with some success. Previous studies show significant effects on the mid-face, including a degree of asymmetry. The aim of this study is to quantify the magnitude, parallelism, and asymmetry of expansion in non-growing patients and to explore possible factors that can predict the pattern of asymmetry of expansion. We examined orthodontic non-growing patients (n=31) with an average age of 20.4 years old, with Cone Beam Computed Tomography (CBCT) images taken before and right after expansion using MSE. Those images were superimposed, and expansion was analyzed utilizing the Mid-Sagittal Plane (MSP) as a reference plane. Average magnitude of total expansion was 5 mm at the Anterior Nasal Spine (ANS), and 4.77 mm at the Posterior Nasal Spine (PNS) which showed statistical significance using a paired t-test with p
Download or read book Rapid Maxillary Expansion written by Donald J. Timms and published by . This book was released on 1981 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Longitudinal Study of Skeletal Effects Induced by Rapid Maxillary Expansion written by Joyce Yu Chang and published by . This book was released on 1994 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transverse Maxillary Deformities written by Leslie A. Will and published by . This book was released on 1995 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparison of Dental and Skeletal Changes Between Rapid Palatal Expansion and Nickel Titanium Palatal Expansion written by Christopher Ciambotti and published by . This book was released on 1999-11-01 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Palatal expansion used to correct maxillomandibular transverse discrepancies occurs through a combination of skeletal (orthopedic) expansion, which involves separating the maxilla at the midpalatal suture, and dental (orthodontic) expansion, which results from buccal tipping of the maxillary posterior teeth. The proportion of skeletal and dental movement is dependent on the rate of expansion (rapid or slow) and the age of the patient during treatment. A The goal of palatal expansion is to maximize the skeletal movement and to minimize the dental movement, while allowing for physiological adjustment of the suture during separation.
Download or read book Stability of Skeletal Alveolar and Dental Components in Microimplant supported Midfacial Skeletal Expander MSE Expansion written by Catherine Ding and published by . This book was released on 2021 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maxillary transverse deficiency is one of the most common skeletal problems in the craniofacial region. Rapid palatal expansion (RPE) has been the preferred standard treatment when transverse deficit is present, especially in young patients. While the main goal of RPE is to split the midpalatal suture, the circum-maxillary sutures are also affected and alveolar bone bending, and dental tipping are common. The desire is to produce a greater skeletal effect than dentoalveolar side-effects; however, the latter are commonly expressed in substantive magnitude. In order to assess skeletal expansion, alveolar bone bending and dental tipping after maxillary expansion, linear and angular measurements has been performed utilizing different craniofacial references. Since the expansion with Midfacial Skeletal Expander (MSE) is archial in nature, the aim of this paper is to quantify the differential components of MSE expansion using an angular measurement system described in a previous study, and assessing the stability of each component after orthodontic treatment. Methods: A total of fourteen subjects with a mean age of 20.4 3.5 years were treated with MSE. Pre-expansion (T0), post-expansion (T1), and post-treatment (T2) CBCT records were superimposed and compared. Based on methods in a previous study, the rotational fulcrum of the zygomaticomaxillary complex were identified and angular measurements were generated to assess changes of the zygomaticomaxillary complex (skeletal expansion), dentoalveolar bone (alveolar bone bending), and maxillary first molars (dental tipping). The stability of all three components after orthodontic treatment were also assessed by comparing measurements between post-expansion and post-treatment. Results: Immediately following MSE expansion, angular measurements showed that skeletal expansion accounted for 87.50% and 88.56% of total expansion, alveolar bone bending for 7.09% and 5.23%, and dental tipping for 5.41% and 6.21% on the right and left sides, respectively. At the end of orthodontic treatment, data showed that skeletal expansion relapsed by 11.20% and 13.28% on the right and left sides, respectively. Changes in alveolar bone bending and dental tipping between post-expansion and post-treatment varied greatly due to orthodontic dental decompensation after expansion. Conclusions: Maxillary skeletal expansion using the microimplant-supported Midfacial Skeletal Expander (MSE) produces mainly skeletal changes with insignificant dentoalveolar changes immediately after expansion. In the long term, the majority of the skeletal expansion was maintained. Long-term dentoalveolar changes were in the magnitude of 300-1500% in the opposite direction, induced by orthodontic decompensation of the pre-existing dental compensation. However, net gains in the intermolar width were maintained despite these changes due to the long-term stability of skeletal expansion.
Download or read book Long Term Functional Breathing Improvement Following Maxillary Skeletal Expander Treatment written by Andrew Combs and published by . This book was released on 2021 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maxillary transverse deficiency is a highly prevalent skeletal problem characterized by a narrow maxilla in relation to the mandible. Although the etiology is multifactorial, the malocclusion develops during facial growth and usually progresses to the permanent dentition if there is no intervention. Furthermore, serious health problems are thought to be related to the occlusal disharmony including narrowing of the pharyngeal airway and nasal cavity, increased nasal resistance, and alteration of tongue posture.In patients with the desire to avoid surgery, a new design of palatal expansion termed the Maxillary Skeletal Expander (MSE) has been utilized to achieve maxillary expansion. MSE utilizes bone borne temporary anchorage devices (TADs) to expand maxillary transverse deficient patients with an interdigitated palatal suture. A preliminary study performed at UCLA demonstrated that patients treated with MSE had significant breathing improvement immediately following skeletal expansion. This study investigated the long-term effects of MSE in airway improvement using peak nasal inspiratory flow (PNIF), peak oral inspiratory flow (POIF), and subjective measures of breathing such as the Visual Analog Scale (VAS) and Nasal Obstruction Symptom Evaluation (NOSE). We examined seventeen patients at the UCLA Orthodontics Clinic at three timepoints: pre-expansion (T0), post-expansion (T1), and post orthodontic treatment (T2). Following MSE expansion, increases in PNIF total, PNIF left, PNIF right and POIF total were found to be significantly improved at the post orthodontic timepoint T2 when compared to T0. Also, VAS total, VAS left, and VAS right were significantly improved at T2 showing a decrease in the feeling of troubled breathing. Additionally, several of the objective and subjective clinical measures positively correlate with the magnitude of expansion determined by critical landmarks on Cone beam computed tomography radiographs (CBCTs). Overall, MSE treatment produces an increased objective and subjective airway improvement that continues to remain stable post expansion. Based on the clinical improvement and correlations with CBCT data, MSE offers a non-surgical alternative to achieve skeletal expansion that may benefit patients with airway issues.
Download or read book Short term Skeletal and Dental Effects of the Acrylic splint Rapid Maxillary Expansion Appliance written by Lisa K. Wendling and published by . This book was released on 1997 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Treatment Effects of Maxillary Protraction by Concomitant Rapid Palatal Expansion and Intraoral Elastic Force on Skeletal Class III Malocclusions written by Judith Anne Okun and published by . This book was released on 1980 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Maxillary Rapid Palatal Expansion on the Soft Tissue of the Midface written by Paul Edward Shok and published by . This book was released on 1983 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects Of Vibration Forces On Maxillary Expansion And Orthodontic Tooth Movement written by Mohammad Abdullah M. Aldosari and published by . This book was released on 2015 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vibration forces (VF) have been shown to alter the formative and resorptive activities of bone. Studies have investigated the use of VF in applications such as the treatment of osteoporosis, bone fracture healing and implant osteointegration with favorable results. In dentistry, orthodontic tooth movement and maxillary suture expansion are common procedures typically requiring prolonged treatment durations with high relapse rates. We hypothesized that local, intermittent VF applications can enhance bone formation during rapid maxillary expansion and accelerate orthodontic tooth movement. Moreover, we also investigated expression of periostin/OSF-2, an adhesion molecule implicated in the formation of bone during maxillary suture expansion. Our results showed that intermittent VF significantly increased bone volume density of the expended palatal bone but limited the amount of palatal expansion and mineral apposition rate at the suture margins. Also, intermittent VF forces did not show statistically significant acceleration of orthodontic tooth movement but significantly enhanced bone volume density of the interradicular bone after tooth movement. Maxillary expansion was also shown to induce the expression of periostin which was proportional to the magnitude of the expansion force with increased bone mineral deposition.
Download or read book The Assessment of Rapid Palatal Expansion Using a Remote Monitoring Software written by Princy Kuriakose and published by . This book was released on 2019 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: Dental Monitoring® (DM) is a software system that allows orthodontists to remotely monitor a patient’s treatment. This study evaluated the accuracy of DM software in assessing the achievement of treatment goals in patients undergoing rapid palatal expansion (RPE) treatment and patient acceptance of DM. Methods: Consecutively treated RPE patients were invited to participate. Participants were trained to capture intraoral photos/videos using the DM app. Maxillary intermolar width (mm) and posterior crossbite correction measured by DM were compared to digital models and intraoral measurements. Patient acceptance of the DM app was evaluated with a survey. Results: Out of the 30 patients enrolled, 20 patients completed the study. DM accurately assessed the correction of posterior crossbite. There was no significant difference in intermolar width measurements obtained with DM, digital model or intraoral exam. Overall, 71% of the participants found the DM app “easy” to work with and 43% of the patients preferred DM over a clinical visit. Conclusion: In person evaluation of maxillary expansion with a Hyrax® expander can be replaced with remote monitoring using the DM software, yet challenges associated with digital imaging hinder the use of this remote evaluation for some patients.
Download or read book Orthodontic Pearls written by Eliakim Mizrahi and published by CRC Press. This book was released on 2015-04-01 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orthodontic Pearls: A Selection of Practical Tips and Clinical Expertise synthesizes a wealth of information gleaned from clinical and administrative experiences in orthodontic practice. The administration and running of an orthodontic practice is not often taught extensively or formally in most schools. This book fills that gap by providing tips,
Download or read book Mini implants in Orthodontics written by Björn Ludwig and published by . This book was released on 2008 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook was designed to be a practical and theoretical vade mecum for the clinical use of orthodontic implants. Relevant information on mini-screw selection and insertion in various clinical situations is presented in a clear, readily-accessible format. By way of clinical examples, solutions to specific orthodontic problems are presented as standardized concepts that can easily be incorporated into everyday practice. Illustration of the required procedures, indications and contraindications, potential risks, clinical problem solving, and advice on establishing routine protocols in daily practice, complete this comprehensive volume. The editors have years of clinical experience. They have forged an international reputation that has enabled them to identify and recruit a panel of collaborators whose expertise complements their own. For those who want to do more than just end up wherever the appliance of the day happens to leave them, this book is a revelation.
