scholarly journals Effectiveness of preoperative orthodontic therapy of an adolescent with skeletal form of mesial occlusion according to X-ray profilometry

2019 ◽  
Vol 100 (5) ◽  
pp. 833-839
Author(s):  
F S Ayupova ◽  
T V Gayvoronskaya ◽  
V A Mikhaylyuk
Keyword(s):  
Comparative Analysis ◽  
Relative Position ◽  
Orthodontic Treatment ◽  
Occlusal Plane ◽  
Facial Aesthetics ◽  
Profile Angle ◽  
X Ray ◽  
Anterior Section ◽  
Orthodontic Therapy ◽  
Before And After

The aim of the study is a comparative analysis of the parameters of profile teleradiographs of the head of a teenager in the dynamics of orthodontic preparation for the surgical stage of treatment. Migration of individual teeth at the stage of orthodontic treatment led to the change in the inclination of occlusal plane (Ocp) relative to the jaw base and to the increase of the value of Wits index. In this regard, in order to clarify the volume of interventions at the surgical stage of patients rehabilitation, it is necessary to conduct dynamic comparative analysis of profile teleradiographs of the head obtained before and after the completion of pre-surgical stage of orthodontic treatment. The authors consider it appropriate to analyze the relative position and correspondence of the sagittal dimensions of the upper (NL) and lower (ML) jaws to the anterior section (SN) of the skull base, and to take into account the size of the chin protrusion determining the position of Pg point when measuring the profile angle and facial aesthetics according to Rickets.

scholarly journals Management of chronic periodontitis: an interdisciplinary approach

2016 ◽  
Vol 4 (2) ◽  
pp. 65
Author(s):  
Sneha Dani ◽  
Savitha A.N ◽  
Kenneth Tan ◽  
Anand Naik ◽  
Charan Chhatrala ◽  
...  
Keyword(s):  
Public Interest ◽  
Orthodontic Treatment ◽  
Interdisciplinary Approach ◽  
Primary Objective ◽  
Periodontal Therapy ◽  
The Other ◽  
Periodontal Health ◽  
Orthodontic Therapy ◽  
Single Tooth ◽  
Before And After

Objective: In recent years, advances in technique as well as a growing public interest in developing and maintaining a healthy and attractive smile, has resulted in a greater understanding of the interrelationships between periodontics and orthodontics. The primary objective of periodontal therapy is to restore and maintain the health and integrity of the attachment apparatus of teeth. In adults, the loss of teeth or periodontal support can result in pathological teeth migration involving either a single tooth or a group of teeth. This may result in the development of a diastema, incisal proclination, rotation with collapse of the posterior occlusion.Materials and methods: This case report is of a 32 year old female patient who reported with swollen gums, generalized spacing between the teeth and extruded upper anterior tooth. Periodontal therapy followed by fixed orthodontic therapy was planned.Results: At the end of 2 years a stable healthy periodontium was established that was both functional and esthetic.Conclusion: Adjunctive orthodontic therapy is often necessary for successful restoration of periodontal health. On the other hand, successful orthodontic treatment will depend on the periodontal preparation before and after treatment and the maintenance of periodontal health throughout all phases of mechano-therapy.

scholarly journals Changes of occlusal plane inclination after orthodontic treatment with four premolars extraction in dento-alveolar bimaxillary protrusion cases

2009 ◽  
Vol 21 (2) ◽  
Author(s):  
NR Yuliawati Zenab ◽  
Tono S. Hambali ◽  
Jono Salim ◽  
Endah Mardiati
Keyword(s):  
Orthodontic Treatment ◽  
Occlusal Plane ◽  
Test Analysis ◽  
Sexual Discrimination ◽  
Lateral Cephalograms ◽  
Before And After ◽  
Orthodontic Patients ◽  
Fixed Appliances ◽  
Bimaxillary Protrusion ◽  
Paired T Test

The purpose of this study was to find out whether there were changes in occlusal plane inclination after fixed orthodontic treatment of bimaxillary protrusion cases where extraction of four first premolars was needed using the standard Edgewise appliances. The sample was fourteen orthodontic patients, aged above sixteen years old, no sexual discrimination, treated with fixed appliances at Orthodontic Specialist Clinic Faculty of Dentistry Universitas Padjadjaran. The method was a pre-post design which compared occlusal plane inclination obtained from tracings of lateral cephalograms before and after orthodontic treatment. The results were calculated with the paired t-test analysis. The study revealed that there were no significant changes in occlusal plane inclination after the orthodontic treatment.

Nickel and Cobalt Hypersensitive Reaction Before and After Orthodontic Therapy in Children

2004 ◽  
Vol 5 (4) ◽  
pp. 79-90 ◽  
Author(s):  
Aynur Medine Şahin Saǧlam ◽  
Vahide Baysal ◽  
A. Murat Ceylan
Keyword(s):  
Stainless Steel ◽  
Hypersensitivity Reaction ◽  
Orthodontic Treatment ◽  
Total Sample ◽  
Hypersensitive Reaction ◽  
Nickel Allergy ◽  
Cross Sectional ◽  
Orthodontic Therapy ◽  
Before And After ◽  
Conventional Stainless Steel

Abstract Nickel and cobalt are major components of alloys used in orthodontics. The objectives of this cross-sectional study was to determine the prevalence of a nickel hypersensitivity reaction before and after orthodontic treatment with conventional stainless steel brackets and wires. The total sample consisted of 82 patients (55 females, and 27 males) from the Orthodontic Department at the Faculty of Dentistry, Süleyman Demirel University. A patch test and a questionnaire were used to evaluate hypersensitivity to these metals. The statistical analysis was carried out using Fisher's exact X2 (2 x 2) test. The prevalence of nickel allergy was found to be higher in females than males (14.55% in females, 0% in males), and the prevalence of cobalt allergy was found to be 9.76% (7.27% in females, 14.81% in males). Orthodontic treatment with conventional stainless steel alloys does not appear to have an allergenic effect on the gingival and oral health of the patient. A family history of an allergy to these metals or the use of metallic objects in contact with the skin do not characterize nickel and cobalt hypersensitivity. This suggests orthodontic therapy with conventional stainless steel appliances does not initiate or aggravate a nickel hypersensitivity reaction. There was no association between the before treatment and after treatment to a nickel and cobalt hypersensitivity reaction. Citation Saglam AMS, Baysal V, Ceylan AM. Nickel and Cobalt Hypersensitive Reaction Before and After Orthodontic Therapy in Children. J Contemp Dent Pract 2004 November;(5)4:079-090.

Evaluation of the Perspectives of Orthodontists and Laypersons About the Effect of Orthodontic Treatment on Facial Aesthetics of Young Turkish Patients

2021 ◽  
pp. 232020682199856
Author(s):  
Ahmet Fidancioglu ◽  
Sıddık Malkoc ◽  
Özge Çelik Güler
Keyword(s):  
Orthodontic Treatment ◽  
Cross Sectional Study ◽  
Class Iii ◽  
Facial Aesthetics ◽  
Cross Sectional ◽  
Angle Class ◽  
Before And After ◽  
Treatment Changes ◽  
And Gender ◽  
Turkish Patients

Aim: To compare the perspective of orthodontists and laypersons on the effects of orthodontic treatment on facial aesthetics in young Classes I, II, and III Turkish patients. Materials and Methods: In this cross-sectional study, a total of 60 patients (30 males and 30 females, 9 to 17 years of age) was included using randomization in strata and then divided equally ( n = 15) into four groups according to the Angle classification. Photographs during frontal and lateral resting and also smiling were obtained from each patient before and after orthodontic treatment. A panel consisting 50 laypersons and 50 orthodontists was invited for the evaluation of the initial and final photos by using the visual analogue scale and a five-point scale to determine similarities and differences of their perspectives in the effects of orthodontic treatment on facial aesthetics. The data were analyzed by independent t-test, one-way analysis of variance, and Pearson’s correlation test. Results: The evaluation of facial aesthetics and treatment changes were not affected by the age and gender of the panel members ( P <.05). Angle Class III patients were given lower scores by both orthodontists ( P < .001) and laypersons ( P < .05), but no significant differences were found between any of other classes ( P >.05). Orthodontists reported greater improvement for Class III than in Class II Division 1 ( P < .05) however laypersons did not notice the changes after orthodontic treatment for any of Angle classes ( P >.05). Conclusion: Class III patients received lower scores for aesthetics from both panels. Laypersons may not be concerned about the effects of orthodontic treatment on facial aesthetics in patients with any Angle class. Orthodontists have seen more facial aesthetic changes after orthodontic treatment in Class III patients.

scholarly journals Assessment of Occlusal Function in a Patient with an Angle Class I Spaced Dental Arch with Periodontal Disease Using a Brux Checker

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Ayako Taira ◽  
Shiho Odawara ◽  
Shuntaro Sugihara ◽  
Kenichi Sasaguri
Keyword(s):  
Periodontal Disease ◽  
Chronic Periodontitis ◽  
Orthodontic Treatment ◽  
Alveolar Bone ◽  
Dental Arch ◽  
Periodontal Tissue ◽  
Occlusal Force ◽  
Orthodontic Therapy ◽  
Before And After ◽  
Anterior Guidance

Comprehensive and appropriate occlusion reconstruction therapy is necessary for orthodontic treatment of adult patients with malocclusion with periodontal disease associated with occlusal trauma. We report the case of a patient with extensive moderate chronic periodontitis associated with occlusal trauma. The patient was diagnosed with extensive moderate chronic periodontitis associated with occlusal trauma and underwent thorough treatment for periodontal disease, oral management, and 20 months of orthodontic therapy. Moreover, reconstructed occlusion was performed to evaluate occlusal trauma for visualization using Brux Checker (BC) analysis before and after active orthodontic treatment. The patient acquired stable anterior guidance and a functional occlusal relationship. BC findings revealed weakening of the functional contact between the lateral occlusal force of the dentition and the front teeth and alveolar bone regeneration. The laminar dura became clearer, and the periodontal tissue improved. Our results suggest that assessment of occlusion function using BC analysis and periodontal examination was effective in enabling occlusal treatment goal clarification through orthodontic treatment in case of periodontal disease associated with occlusal trauma.

scholarly journals Assessment of Maxillary Third Molar Status Before and After Orthodontic Treatment in Adolescent Patients

2020 ◽  
Vol 70 (12) ◽  
pp. 4381-4386
Keyword(s):  
Orthodontic Treatment ◽  
Third Molar ◽  
Occlusal Plane ◽  
Maxillary Molars ◽  
Maxillary Third Molar ◽  
Before And After ◽  
Maxillary Molar ◽  
Angular Measurements ◽  
Upper Third ◽  
Upper Molar

Third maxillary molar prediction for impaction and eruption should be part of the orthodontic treatment planning. In our study we evaluated the reliability of some linear and angular measurements used for the assessment of maxillary third molar status by comparing them before and after orthodontic treatment. 208 upper third molars were analyzed, 148 at patients who undergone non extraction orthodontic treatment and 60 at patients where first premolar extractions were performed.We analyzed on orthopantomograms taken at the beginning and at the end of the orthodontic the ratio between the dimension of the retromolar space and the mesio distal diameter of the third molar, the angle between the long axis of third molar and the occlusal plane and the angle between the long axis of the second and third maxillary molars. We found significant changes in retromolar space dimension after orthodontic treatment with premolars removal and slight average increase in the non extraction group. We didn’t find significant statistical differences before and after orthodontic treatment neither between the angulations of the maxillary third molar with the occlusal plane, nor with the second upper molar (p>0.05) in both groups. The conclusion is that the type of orthodontic treatment has little or no influence upon third molar angulation and this parameter can be used as a predictive factor for third molar status from the beginning of the orthodontic treatment. Keywords: third maxillary molar; retromolar space; angulation

Evaluation of Freezing Methods by Low Temperature X-Ray Diffraction

1977 ◽  
Vol 35 ◽  
pp. 330-333
Author(s):  
T. Gulik-Krzywicki ◽  
M.J. Costello
Keyword(s):  
Biological Materials ◽  
Molecular Organization ◽  
X Ray Diffraction ◽  
Glass Capillary ◽  
X Ray ◽  
Rate Dependent ◽  
Before And After ◽  
Freeze Etching ◽  
Diffraction Patterns ◽  
Set Up

Freeze-etching electron microscopy is currently one of the best methods for studying molecular organization of biological materials. Its application, however, is still limited by our imprecise knowledge about the perturbations of the original organization which may occur during quenching and fracturing of the samples and during the replication of fractured surfaces. Although it is well known that the preservation of the molecular organization of biological materials is critically dependent on the rate of freezing of the samples, little information is presently available concerning the nature and the extent of freezing-rate dependent perturbations of the original organizations. In order to obtain this information, we have developed a method based on the comparison of x-ray diffraction patterns of samples before and after freezing, prior to fracturing and replication.Our experimental set-up is shown in Fig. 1. The sample to be quenched is placed on its holder which is then mounted on a small metal holder (O) fixed on a glass capillary (p), whose position is controlled by a micromanipulator.

The Precipitation of Si in AlCuSi Thin Films

1973 ◽  
Vol 31 ◽  
pp. 34-35 ◽  
Author(s):  
R. M. Anderson
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Heat Treatment ◽  
Solid Solution ◽  
Integrated Circuit ◽  
Copper Film ◽  
Solution Concentration ◽  
X Ray ◽  
Silicon Thin Films ◽  
Before And After

Aluminum-copper-silicon thin films have been considered as an interconnection metallurgy for integrated circuit applications. Various schemes have been proposed to incorporate small percent-ages of silicon into films that typically contain two to five percent copper. We undertook a study of the total effect of silicon on the aluminum copper film as revealed by transmission electron microscopy, scanning electron microscopy, x-ray diffraction and ion microprobe techniques as a function of the various deposition methods.X-ray investigations noted a change in solid solution concentration as a function of Si content before and after heat-treatment. The amount of solid solution in the Al increased with heat-treatment for films with ≥2% silicon and decreased for films <2% silicon.

Perbedaan Analisis Sefalometri Skeletal Sebelum dan Sesudah Perawatan Alat Myofunctional pada Pasien Maloklusi Dentoskeletal Kelas II Divisi I dalam Masa Pertumbuhan dengan Metode Steiner

2019 ◽  
Vol 4 (2) ◽  
Author(s):  
Nugroho Ahmad Riyadi
Keyword(s):  
Orthodontic Treatment ◽  
Class Ii ◽  
T Test ◽  
Analytic Study ◽  
Statistic Analysis ◽  
Twin Block ◽  
Normal Occlusion ◽  
Division 1 ◽  
Before And After ◽  
Class Ii Division 1

The aim of orthodontics treatment is normalization of teeth position in three planes, using various orthodontics appliance to reach the chepalometric standar and normal occlusion. Orthodontic treatment for dentoskeletal class II division 1 malocclusion in growing patients using myofunctional appliance may correct anteroposterior planes of mandibula. This study was a descriptive retrospective analytic study to look at the success of Orthodontic treatment for dentoskeletal class II division 1 in growing patients with myofunctional appliance using chepalometrics analysis Steiner value. The sample used in this study is chepalogram radiographic from patient with dentoskeletal class II division 1 malocclusion in growing patients before and after using myofunctional appliance in PPDGS orthodontics Clinic of Padjadjaran University. Statistic analysis were performed with pair t-test and Wilcoxon. Based on this study, it is concluded that orthodontic treatment with myofunctional appliance such as activator and twin block in growing patient with dentoskeletal class II division 1 malocclusion shows significant changes and compatibility with the normal criteria.

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