scholarly journals Digital Planning for Mini-Implant Supported Palatal Expander in Open-Bite Treatment

2020 ◽  
Vol 2 (3) ◽  
pp. 16-22
Author(s):  
Szuhanek C ◽  
Babat M ◽  
Popa A
Keyword(s):  
Computer Aided Design ◽  
Orthognathic Surgery ◽  
Traditional Approach ◽  
Treatment Plan ◽  
Difficult Problem ◽  
Open Bite ◽  
Adult Patients ◽  
Maxillary Expansion ◽  
Surgical Guide ◽  
Mini Implants

Open bite malocclusion, due to it’s multifactorial etiology, has always been considered a difficult problem to treat. Often associated with transverse maxillary deficiency, this is a real challenge in the field of orthodontics. The traditional approach, for this type of anomaly, in adult patients, is orthognathic surgery and RME (rapid maxillary expansion). There are several approaches to the treatment of adult patients using digital technology. Mini-implant supported palatal expander limits the side effects of the conventional RME and is less invasive compared to orthognathic surgery. Precise and predictable mini-implant insertion, using a customized surgical guide, provides a safe therapeutic approach. This case report combines Cone-beam computed tomography (CBCT), laser scan superimposition, computer-aided design (CAD) and 3D printing in order to design and print a customized surgical guide for orthodontic mini-implant insertion. A CBCT scan was performed to determine the optimal site for mini-implants’ placement. Using the 3Shape Trios Intraoral Scanner the maxilla and the mandible were laser-scanned. Blue Sky Plan 4 software was used to design the surgical guide, and RayWare software was used for printing it. 4 mini-implants were inserted using a safe and predictable technique. The 3D technology represents the future of orthodontics, reducing the risks, chair-side time while providing the best treatment plan for the patient.

scholarly journals Open bite: diagnosis, treatment and stability

2012 ◽  
Vol 23 (6) ◽  
pp. 768-778 ◽  
Author(s):  
Mírian Aiko Nakane Matsumoto ◽  
Fábio Lourenço Romano ◽  
José Tarcísio Lima Ferreira ◽  
Rodrigo Alexandre Valério
Keyword(s):  
Orthognathic Surgery ◽  
Treatment Plan ◽  
Accurate Diagnosis ◽  
Open Bite ◽  
Class I ◽  
Occlusal Adjustment ◽  
Mini Implants ◽  
Functional Consequences ◽  
Posttreatment Period ◽  
The Ideal

Open bite has fascinated Orthodontics due to the difficulties regarding its treatment and maintenance of results. This anomaly has distinct characteristics that, in addition to the complexity of multiple etiological factors, have aesthetic and functional consequences. Within this etiological context, several types of mechanics have been used in open bite treatment, such as palatal crib, orthopedic forces, occlusal adjustment, orthodontic camouflage with or without extraction, orthodontic intervention using mini-implants or mini-plates, and even orthognathic surgery. An accurate diagnosis and etiological determination are always the best guides to establish the objectives and the ideal treatment plan for such a malocclusion. This report describes two cases of open bite. At the end of the treatment, both patients had their canines and molars in Class I occlusion, normal overjet and overbite, and stability during the posttreatment period.

scholarly journals Long-term stability of an anterior open-bite malocclusion treated in the mixed dentition: a case report

2006 ◽  
Vol 14 (6) ◽  
pp. 470-475
Author(s):  
Márcio Rodrigues de Almeida ◽  
Renato Rodrigues de Almeida ◽  
Ana Claúdia de Castro Ferreira Conti ◽  
Ricardo de Lima Navarro ◽  
Giovani de Oliveira Correa ◽  
...  
Keyword(s):  
Orthognathic Surgery ◽  
Clinical Case ◽  
Open Bite ◽  
Mixed Dentition ◽  
Facial Growth ◽  
Maxillary Expansion ◽  
Anterior Open Bite ◽  
Long Term Stability

A clinical case with anterior open-bite, treated in the mixed dentition, is presented. This approach demonstrates one of the possible approaches of treatment, which is capable of interfering with growth and redirecting its vectors. Orthodontic and orthopedic methods were used, consisting of slow maxillary expansion, through a fixed palatal crib soldered in a bi-helix appliance, and high-pull traction on the mandible for 16 hours a day. After eight years of follow-up, stable outcomes were accomplished. These results may be explained by the fact that treatments were performed at the appropriate period of development, thus establishing perioral muscular equilibrium, matching the final period of facial growth. The combination of orthodontic and orthopedic treatments was necessary to prevent the need of further orthognathic surgery treatment.

scholarly journals Class II subdivision with skeletal transverse maxillary deficit treated by single-sitting bone-borne appliance:

2020 ◽  
Vol 91 (1) ◽  
pp. 129-137
Author(s):  
Luca Lombardo ◽  
Mario Palone ◽  
Giuliano Maino ◽  
Emanuele Paoletto ◽  
Antonella Carlucci ◽  
...  
Keyword(s):  
Case Report ◽  
Young Adult ◽  
Adult Patient ◽  
Treatment Plan ◽  
Maxillary Expansion ◽  
Surgical Guide ◽  
Young Adult Patient ◽  
Single Bone ◽  
Clear Aligner ◽  
Palatal Vault

ABSTRACT This case report describes orthodontic treatment including both skeletal maxillary expansion and unilateral distalization by means of a single bone-borne appliance followed by clear aligner therapy in a young adult patient. A surgical guide was digitally designed and three-dimensionally printed to facilitate the placement of four miniscrews in the palatal vault. The miniscrews were fitted and the bone-borne appliance was delivered in a single clinical appointment. The postexpansion photographic records and models demonstrate the opening of the palatal median suture, the pure skeletal expansion, and the resolution of the left crossbite after 40 activations. Specifically, left molar Class I was obtained in about 5 months without any loss of anterior anchorage, and the subsequent aligner phase achieved all of the objectives established in the treatment plan. This case report shows clearly how careful digital planning of miniscrew insertion and the delivery of a pure bone-borne appliance in a single sitting enabled good clinical outcomes to be achieved in an acceptable timeframe, without side effects, even in a young adult patient.

Three-dimensional virtual surgical planning (3D-VSP) in orthognathic surgery: Advantages, disadvantages and pitfalls

2020 ◽  
pp. 146531252095487
Author(s):  
Chris D Donaldson ◽  
Mehmet Manisali ◽  
Farhad B Naini
Keyword(s):  
Computer Aided Design ◽  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Three Dimensional ◽  
Open Bite ◽  
Anterior Open Bite ◽  
Skeletal Class ◽  
Virtual Surgical Planning ◽  
Skeletal Class Ii ◽  
Computer Aided

In this article, the advantages, disadvantages and pitfalls of three-dimensional virtual surgical planning (3D-VSP) compared to traditional two-dimensional (2D) planning methods in orthognathic surgery are discussed, alongside a standardised protocol that can be utilised. A skeletal Class II, skeletal Class III and an anterior open bite clinical case along with their 3D-VSP management are presented, highlighting modifications that can be made to computer-aided design/computer-aided manufacture (CAD/CAM) cutting guide and plate designs.

scholarly journals An Innovative and Cost-Advantage CAD Solution for Cubitus Varus Surgical Planning in Children

2021 ◽  
Vol 11 (9) ◽  
pp. 4057
Author(s):  
Leonardo Frizziero ◽  
Gian Maria Santi ◽  
Christian Leon-Cardenas ◽  
Giampiero Donnici ◽  
Alfredo Liverani ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Low Cost ◽  
Cost Effective ◽  
Varus Deformity ◽  
Patient Specific ◽  
Cubitus Varus ◽  
Surgical Guide ◽  
Traditional Procedure ◽  
Custom Made ◽  
Patient Specific Instruments

The study of CAD (computer aided design) modeling, design and manufacturing techniques has undergone a rapid growth over the past decades. In medicine, this development mainly concerned the dental and maxillofacial sectors. Significant progress has also been made in orthopedics with pre-operative CAD simulations, printing of bone models and production of patient-specific instruments. However, the traditional procedure that formulates the surgical plan based exclusively on two-dimensional images and interventions performed without the aid of specific instruments for the patient and is currently the most used surgical technique. The production of custom-made tools for the patient, in fact, is often expensive and its use is limited to a few hospitals. The purpose of this study is to show an innovative and cost-effective procedure aimed at prototyping a custom-made surgical guide for address the cubitus varus deformity on a pediatric patient. The cutting guides were obtained through an additive manufacturing process that starts from the 3D digital model of the patient’s bone and allows to design specific models using Creo Parametric. The result is a tool that adheres perfectly to the patient’s bone and guides the surgeon during the osteotomy procedure. The low cost of the methodology described makes it worth noticing by any health institution.

Linking sensory neurons to visually guided behavior: Relating MST activity to steering in a virtual environment

2013 ◽  
Vol 30 (5-6) ◽  
pp. 315-330 ◽  
Author(s):  
SETH W. EGGER ◽  
KENNETH H. BRITTEN
Keyword(s):  
Cortical Neurons ◽  
Traditional Approach ◽  
Sensory System ◽  
Sensory Information ◽  
Neuronal Population ◽  
Difficult Problem ◽  
Lower Envelope ◽  
Visually Guided ◽  
Medial Superior Temporal ◽  
Visual Cortical

AbstractMany complex behaviors rely on guidance from sensations. To perform these behaviors, the motor system must decode information relevant to the task from the sensory system. However, identifying the neurons responsible for encoding the appropriate sensory information remains a difficult problem for neurophysiologists. A key step toward identifying candidate systems is finding neurons or groups of neurons capable of representing the stimuli adequately to support behavior. A traditional approach involves quantitatively measuring the performance of single neurons and comparing this to the performance of the animal. One of the strongest pieces of evidence in support of a neuronal population being involved in a behavioral task comes from the signals being sufficient to support behavior. Numerous experiments using perceptual decision tasks show that visual cortical neurons in many areas have this property. However, most visually guided behaviors are not categorical but continuous and dynamic. In this article, we review the concept of sufficiency and the tools used to measure neural and behavioral performance. We show how concepts from information theory can be used to measure the ongoing performance of both neurons and animal behavior. Finally, we apply these tools to dorsal medial superior temporal (MSTd) neurons and demonstrate that these neurons can represent stimuli important to navigation to a distant goal. We find that MSTd neurons represent ongoing steering error in a virtual-reality steering task. Although most individual neurons were insufficient to support the behavior, some very nearly matched the animal’s estimation performance. These results are consistent with many results from perceptual experiments and in line with the predictions of Mountcastle’s “lower envelope principle.”

Tratamento ortodôntico e cirúrgico com a técnica lingual

2021 ◽  
Vol 14 (54) ◽  
pp. 73-79
Author(s):  
Silvana Allegrini Kairalla ◽  
Aluísio Galiano
Keyword(s):  
Young Adult ◽  
Surgical Technique ◽  
Orthognathic Surgery ◽  
Adult Patients ◽  
Viable Alternative ◽  
Lingual Technique ◽  
Almost All

Introduction: Adult and young adult patients have been increasingly seeking for orthodontic treatments and almost all of them want it to be done by an aesthetic appliance with maximum invisibility. The lingual technique has emerged in the late 1970s and has now become a very viable alternative to perform orthodontic treatments, however, many cases of treatment or retreatment involve correction through orthognathic surgery. The surgical technique is more sedimented and simplified as a great aid in the correction of skeletal discrepancies. Objectives: This article aims to show the correction of malocclusion and discrepancy between dental arches, with the lingual orthodontic technique and the surgical association. Conclusion: It is possible to provide to the patient an adequate correction of malocclusion, maintaining the desired aesthetics through the lingual technique and orthognathic surgery

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