Orthodontic Monitoring and Case Finishing With the T-Scan System

2020 ◽  
pp. 1057-1124
Author(s):  
Julia Cohen-Levy, DDS
Keyword(s):  
Orthodontic Treatment ◽  
Tooth Movement ◽  
Treatment Plan ◽  
Force Distribution ◽  
Occlusal Force ◽  
Fixed Appliance ◽  
Occlusal Contact ◽  
Occlusion Time ◽  
Scan Data ◽  
Occlusal Contact Pattern

This chapter reviews T-Scan use in orthodontics from diagnosis to case finishing, and then in retention, while defining normal T-Scan recording parameters for orthodontically-treated subjects versus untreated subjects. T-Scan use in the case-finishing process is also described, which compensates for changes in the occlusion that occur during “post-orthodontic settling,” as teeth move freely within the periodontium to find an equilibrium position when the orthodontic appliances have been removed. T-Scan implementation is necessary because, often, despite there being a post treatment, visually “perfect” angle's Class I relationship established with the orthodontic treatment, ideal occlusal contacts do not result solely from tooth movement. Creating simultaneous and equal force occlusal contacts following fixed appliance removal can be accomplished using T-Scan data to optimize the end-result occlusal contact pattern. The T-Scan software's force distribution and timing indicators (the two- and three-dimensional force views, force percentage per tooth and arch half, the center of force trajectory and icon, the occlusion time [OT], and the disclusion time [DT]), all aid the Orthodontist in obtaining an ideal occlusal force distribution during case-finishing. Fortunately, most orthodontic cases remain asymptomatic during and after tooth movement. However, an occlusal force imbalance or patient discomfort may occur along with the malocclusion that needs orthodontic treatment. Symptomatic cases require special documentation at the baseline, and careful monitoring throughout the entire orthodontic process. The clinical use of T-Scan in these “fragile” cases of patient muscle in-coordination, mandibular deviation, atypical pain, and/or TMJ idiopathic arthritis, are illustrated by several case reports. The presented clinical examples highlight combining T-Scan data recorded during case diagnosis, tooth movement, and in case finishing, with patients that underwent lingual orthodontics and orthognathic surgery, orthodontic treatment using clear aligners, or conventional fixed treatment with a camouflage treatment plan, which require special occlusal finishing (when premolars are extracted in only one arch).

Orthodontic T-Scan Applications

2015 ◽  
pp. 523-561 ◽  
Author(s):  
Julia Cohen-Levy, DDS, MS, PhD
Keyword(s):  
Orthognathic Surgery ◽  
Tooth Movement ◽  
Case Reports ◽  
Force Distribution ◽  
Fixed Appliance ◽  
Occlusal Contact ◽  
3 Dimensional ◽  
Finishing Process ◽  
Scan Data ◽  
Occlusal Contact Pattern

This chapter reviews T-Scan use in Orthodontics, defines normal T-Scan recordings for orthodontically treated subjects versus untreated subjects, and explains T-Scan use in the case-finishing process. After orthodontic appliance removal changes in the occlusion result from “settling,” because teeth can move freely within the periodontium. Despite a post treatment, visually “perfect” Angle's Class I relationship, ideal occlusal contacts often do not result solely from tooth movement. Creating simultaneous and equal contacts following fixed appliance removal can be accomplished using T-Scan data to optimize the end-result occlusal contact pattern. The software's force distribution and timing indicators (the 2 and 3-Dimensional ForceViews, force percentage per tooth and arch half, the Center of Force, and the Occlusion and Disclusion Times) aid in obtaining an ideal occlusal force distribution during case-finishing. Several case reports highlight combining lingual orthodontic treatment with Orthognathic surgery, where each presented case utilized T-Scan data during active treatment and retention.

Changes in occlusal force and occlusal contact area after orthodontic treatment

2010 ◽  
Vol 40 (3) ◽  
pp. 176 ◽  
Author(s):  
Yoon-Jeong Choi ◽  
Chooryung J. Chung ◽  
Kyung-Ho Kim
Keyword(s):  
Contact Area ◽  
Orthodontic Treatment ◽  
Occlusal Force ◽  
Occlusal Contact

scholarly journals Mechanical Properties and Clinical Significance of Orthodontic Wires

2022 ◽  
Author(s):  
Mohamed Ali Sawas ◽  
Mohammed Ahmed Al Nassir ◽  
Lojain Mohammed Nayas ◽  
Meshari Nasser Alabdulkarim ◽  
Farah Youssef Faden ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Process ◽  
Tooth Movement ◽  
Treatment Plan ◽  
Chemical Properties ◽  
Clinical Applications ◽  
Orthodontic Wires ◽  
Adequate Knowledge ◽  
Orthodontic Wire ◽  
Fixed Appliances

Orthodontic treatment is usually conducted by applying forces to certain teeth to move them into a targeted position. Orthodontic wires have been reported to be the primary modalities used in fixed-appliances-based orthodontic treatment to induce favorable tooth movement events. Accordingly, acquiring adequate knowledge about these approaches' clinical applications and biochemical behavior is essential when planning for a successful orthodontic treatment. Orthodontic wires are widely used and are mainly composed of composites, polymers, alloys and metals. Accordingly, the physical properties and clinical application of orthodontic wires vary based on their composition. In this context, it was recommended that achieving favorable outcomes of orthodontic treatment obliges clinicians to decide the best orthodontic wire and treatment plan based on the chemical properties and related clinical applications of each wire. Therefore, wires that tend to produce increasing stiffness gradually are generally used. However, it should be noted that no ideal wire exists. Therefore, favoring the application of a wire over the other should be based on the intended outcomes and stage of the treatment process. 

scholarly journals The Effect of a Plasma With Platelet-rich Fibrin in Bone Regeneration and on Rate of Orthodontic Tooth Movement in Adolescents

2019 ◽  
Vol 69 (12) ◽  
pp. 3727-3730 ◽  
Author(s):  
Ana Nemtoi ◽  
Ana Sirghe ◽  
Alexandru Nemtoi ◽  
Danisia Haba
Keyword(s):  
Clinical Trial ◽  
Bone Regeneration ◽  
Orthodontic Treatment ◽  
Tooth Movement ◽  
Treatment Plan ◽  
Orthodontic Tooth Movement ◽  
Constant Force ◽  
Coil Spring ◽  
Platelet Rich Fibrin

The aim of this study was to evaluate the effect of platelet-rich fibrin (PRF), placed in extraction sockets, on bone regeneration and orthodontic tooth movement in adolescents. Fourty extraction sockets from twenty patients requiring extraction of first premolars based on their orthodontic treatment plan participated in this split-mouth clinical trial. Immediately, the teeth adjacent to the defects were pulled together by a NiTi closed-coil spring with constant force. The bone regeneration and the amount of orthodontic tooth movement was evaluated.

scholarly journals Proteomic Analysis of Saliva Identifies Potential Biomarkers for Orthodontic Tooth Movement

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Mohd Faiz Ellias ◽  
Shahrul Hisham Zainal Ariffin ◽  
Saiful Anuar Karsani ◽  
Mariati Abdul Rahman ◽  
Shahidan Senafi ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Tooth Movement ◽  
Orthodontic Tooth Movement ◽  
Differentially Expressed ◽  
Salivary Proteins ◽  
Niti Wire ◽  
Two Dimensional Gel Electrophoresis ◽  
Fixed Appliance ◽  
Maldi Tof ◽  
Whole Saliva

Orthodontic treatment has been shown to induce inflammation, followed by bone remodelling in the periodontium. These processes trigger the secretion of various proteins and enzymes into the saliva. This study aims to identify salivary proteins that change in expression during orthodontic tooth movement. These differentially expressed proteins can potentially serve as protein biomarkers for the monitoring of orthodontic treatment and tooth movement. Whole saliva from three healthy female subjects were collected before force application using fixed appliance and at 14 days after 0.014′′ Niti wire was applied. Salivary proteins were resolved using two-dimensional gel electrophoresis (2DE) over a pH range of 3–10, and the resulting proteome profiles were compared. Differentially expressed protein spots were then identified by MALDI-TOF/TOF tandem mass spectrometry. Nine proteins were found to be differentially expressed; however, only eight were identified by MALDI-TOF/TOF. Four of these proteins—Protein S100-A9, immunoglobulin J chain, Ig alpha-1 chain C region, and CRISP-3—have known roles in inflammation and bone resorption.

scholarly journals Kombinasi penggunaan quadhelix dan tanggul gigitan posterior pada perawatan crossbite anterior

2017 ◽  
Vol 2 (1) ◽  
pp. 47
Author(s):  
Rhabiah El Fithriyah
Keyword(s):  
Female Patient ◽  
Active Treatment ◽  
Orthodontic Treatment ◽  
Treatment Plan ◽  
Median Line ◽  
Fixed Appliance ◽  
Anterior Crowding ◽  
Fixed Appliances ◽  
Removable Appliances ◽  
Quad Helix

Combination quad helix and bite riser posterior for anterior crossbite treatment. Anterior crossbite treatment can be done with the appliances either by removable appliances or fixed appliances. One fixed appliance that can be used in the treatment of anterior crossbite is a quad helix with a combination of bite raiser posterior. It is the preferred appliance for correction of maxillary dental constriction in a preadolescent child. Quad helix is activated by widening the anterior or posterior helices. An 11-year-old female patient referred to the clinic with a problem of crowding teeth that affected her appearance. The diagnosis for her case was malocclusions dentoalveolar class I angle along with anterior crossbite 12 and 21, anterior crowding maxilla with convex face profile, shifted median line, and no TMJ disorder. The treatment plan used a quad helix and bite riser posterior followed by a fixed orthodontic treatment. The aim of this study was to correct the anterior crossbite using a combination of a quad helix and bite raiser posterior. The patient was treated using composite bite raiser posterior on the occlusal surface of 16.26, and quad helix soldered to bands and cemented on 16 and 26. The patient was instructed to get her teeth controlled every two week to activate quad helix. After 3 months of active treatment, anterior crossbite was corrected. The appliance was left passively in place for 3 months as retention. The study concluded that crossbite treatment with a combination of a quad helix and bite riser was effective in correcting anterior crossbite in adolescents.ABSTRAKPerawatan crossbite anterior dapat dilakukan dengan beberapa macam alat baik dengan alat lepasan ataupun alat cekat. Salah satu alat semi cekat yang dapat digunakan pada perawatan crossbite anterior adalah quad helix dengan kombinasi tanggul gigitan posterior. Quad helix merupakan alat yang dapat digunakan untuk konstriksi dental di maksila pada masa remaja. Seorang pasien anak perempuan berusia 11 tahun mengeluhkan keadaan giginya yang berjejal dan menganggu penampilannya. Diagnosis kasus adalah maloklusi dentoalveolar kelas I angle disertai crossbite gigi 12 dan 21, crowding anterior rahang atas dengan profil muka cembung, garis median tidak sesuai dan tidak disertai gangguan TMJ. Rencana perawatan menggunakan quad helix dan tanggul gigitan posterior kemudian dilanjutkan dengan perawatan ortodontik cekat. Tujuan artikel ini adalah menyajikan perawatan crossbite anterior dengan menggunakan kombinasi quad helix dan tanggul gigitan posterior. Pasien dirawat menggunakan tanggul gigitan komposit posterior pada permukaan oklusal gigi 16, 26 dan quad helix yang disolder pada molar band dan disementasi di molar band pada gigi 16 dan 26 kemudian pasien diinstruksikan untuk kontrol setiap dua minggu satu kali kunjungan untuk aktivasi quad helix. Setelah perawatan aktif 3 bulan crossbite anterior telah terkoreksi. Alat ditinggalkan di dalam mulut dalam keadaan pasif selama 3 bulan sebagai retensi. Dapat ditarik kesimpulan bahwa perawatan crossbite dengan kombinasi quad helix dan tanggul gigitan posterior efektif dalam mengoreksi  crossbite anterior pada remaja.

scholarly journals Orthodontic Management in Aggressive Periodontitis

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Rajesh Gyawali ◽  
Bhagabat Bhattarai
Keyword(s):  
Orthodontic Treatment ◽  
Tooth Movement ◽  
Treatment Plan ◽  
Orthodontic Tooth Movement ◽  
Interdisciplinary Approach ◽  
Aggressive Periodontitis ◽  
Rapid Progression ◽  
Orthodontic Patients ◽  
Proper Force

Aggressive periodontitis is a type of periodontitis with early onset and rapid progression and mostly affecting young adults who occupy a large percentage of orthodontic patients. The role of the orthodontist is important in screening the disease, making a provisional diagnosis, and referring it to a periodontist for immediate treatment. The orthodontist should be aware of the disease not only before starting the appliance therapy, but also during and after the active mechanotherapy. The orthodontic treatment plan, biomechanics, and appliance system may need to be modified to deal with the teeth having reduced periodontal support. With proper force application and oral hygiene maintenance, orthodontic tooth movement is possible without any deleterious effect in the tooth with reduced bone support. With proper motivation and interdisciplinary approach, orthodontic treatment is possible in patients with controlled aggressive periodontitis.

Digital Occlusal Force Distribution Patterns (DOFDPs)

2015 ◽  
pp. 830-904
Author(s):  
Robert C. Supple, DMD
Keyword(s):  
Structural Damage ◽  
Distribution Patterns ◽  
Force Distribution ◽  
Occlusal Force ◽  
Occlusal Contact ◽  
Stomatognathic System ◽  
Contact Data ◽  
Data Points ◽  
Analysis System ◽  
The Many

This chapter describes the many clinical applications of Digital Occlusal Force Distribution Patterns (DOFDPs) recorded with the T-Scan Computerized Occlusal Analysis system. Movements made by the Center of Force trajectory as force travels around the dental arches during the occlusion and disocclusion creates these patterns. The repetitive occlusal contact data points locate the force distribution received when teeth occlude against each other. These force distribution patterns correlate to intraoral compromised dental anatomy found in radiographs, photographs, and during the clinical examination of teeth and their supporting tissues. Moreover, they directly influence the envelope of motion, the envelope of function, and head and neck posture. This chapter illustrates with clinical examples the correlation between Stomatognathic System structural damage and repeating patterns of abnormal occlusal force distribution. The T-Scan technology isolates these damaging regions of excess microtraumatic occlusal force, absent of clinician subjectivity, thereby helping clinicians make an accurate, organized, and documented occlusal diagnosis.

Masticatory Function Assessment of Adult Patients With Cleft Lip and Palate After Orthodontic Treatment

2021 ◽  
pp. 105566562199173
Author(s):  
Sayumi Miura ◽  
Hiroshi Ueda ◽  
Koji Iwai ◽  
Cynthia Concepcion Medina ◽  
Eri Ishida ◽  
...  
Keyword(s):  
Contact Area ◽  
Orthodontic Treatment ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Adult Patients ◽  
Occlusal Force ◽  
Occlusal Contact ◽  
Masticatory Function ◽  
Masticatory Efficiency ◽  
Normal Occlusion

Objective: To determine whether orthodontically treated patients with cleft lip and palate (CLP) possess a different masticatory function than those of untreated patients with normal occlusion. Design: Occlusal contact area, occlusal force, as well as masseter and anterior temporal muscular activity were measured during maximum voluntary clenching (MVC) tests. Mandibular left and right lateral movements during mastication were also assessed. To further elucidate the nature of masticatory function, especially to determine the rate of abnormal jaw movement patterns, a parametric error index (EI) was set. Finally, masticatory efficiency was evaluated with a glucose sensitive measuring device. Participants: Fifteen patients with CLP who had previously completed the orthodontic treatments required to achieve an acceptable and more harmonious occlusion accepted to volunteer in this study along with 21 untreated patients who already possessed a normal occlusion. Results: Patients with CLP showed a significantly lower occlusal force, reduced occlusal contact area, and decreased masticatory efficiency as well as significantly higher EI value when compared with controls. However, there was no significant difference when analyzing muscle activity, although masticatory efficiency was significantly different between the 2 groups. Despite this result, the scores obtained by the patients with CLP in the masticatory efficiency tests were still in the normal range. Conclusions: Orthodontic treatment for adult patients with CLP provides a satisfactory result for the patients’ masticatory ability albeit significantly less ideal compared with untreated patients with normal occlusion.

scholarly journals Orthodontic Treatment Including Autotransplantation of a Mature Tooth

2009 ◽  
Vol 79 (2) ◽  
pp. 387-393 ◽  
Author(s):  
Kazuaki Nishimura ◽  
Shinobu Amano ◽  
Kimihisa Nakao ◽  
Shigemi Goto
Keyword(s):  
Orthodontic Treatment ◽  
Tooth Movement ◽  
Root Resorption ◽  
Treatment Plan ◽  
Primary School Student ◽  
Appropriate Treatment ◽  
Japanese Female ◽  
Old Japanese ◽  
Chief Complaints

Abstract The patient was a 24-year-old Japanese female. The chief complaints were crowding and masticatory dysfunction due to the missing right first molar. Her maxillary first premolars had been extracted when she was a primary school student. We planned orthodontic treatment with extraction of the mandibular first premolars and transplantation of the mandibular left first premolar into the maxillary right first molar area. We made a diagnostic setup model to initiate an appropriate treatment plan for the discrepancy in tooth size ratio. Following the diagnostic setup model, the space in the maxillary right first molar area was closed by a small amount of tooth movement, and a good occlusion was achieved. The patient had been in retention for 7 years, and the occlusion has been maintained very well during this time. In the follow-up, 10 years after autotransplantation, no signs of inflammatory or replacement root resorption were found, and marginal bone support appeared similar to that of neighboring teeth.

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