scholarly journals Effects of orthodontic treatment after adenoidectomy on jaw relations in the sagittal plane

2005 ◽  
Vol 62 (4) ◽  
pp. 287-292 ◽  
Author(s):  
Jasmina Milic
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Effects ◽  
Sagittal Plane ◽  
Class Ii ◽  
Open Bite ◽  
Class I ◽  
Group 2 ◽  
One Year ◽  
Group 1

Aim. To evaluate the orthodontic treatment effects, performed immediately after adenoidectomy, on lips relation, overjet and class (Angle). Methods. Three groups of patients, aged 6?17 years, were observed: group K - patients with oral respiration caused by adenoidal enlargement; group 1 - patients with adenoidectomy performed five and more years previously; group 2 - patients with one year of orthodontic treatment performed immediately after adenoidectomy. Lips and overjet status and class (Angle) was measured in the examined patients. Results. In all of the three examined groups, there was a statistically highly significant increase (p<0.01) of competent lips. In the patients of group K, the overjet values ranged from 1 mm up to 12 mm where 90% of them had overjet > 4 mm and 6% < 1 mm. The front open bite, low overbite and reversed overjet was found in the patients with low overjet in this group, as well. Overjet values in the patients of group 1 ranged from -2 mm up to 12 mm where 86% had overjet > 4 mm and 10% < 1 mm. Significantly higher increase (p<0.01) of overjet values (1?4 mm in 94% of patients) was observed in the patients of group 2 in comparison to the values found in the patients from groups 0 and 1. Class II (Angle) was recorded in 81% of the patients in group 0, and 79% in group 1, while class I (Angle) was observed 100% only in the patients of group 2. Conclusion. Orthodontic treatment immediately after adenoidectomy was necessary for achieving the competition lips relation, normal overjet and class I (Angle).

scholarly journals Maxillary anterior alignment stability in Class I and Class II malocclusions treated with or without extraction

2015 ◽  
Vol 86 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Willian Juarez Granucci Guirro ◽  
Karina Maria Salvatore Freitas ◽  
Guilherme Janson ◽  
Marcos Roberto de Freitas ◽  
Camila Leite Quaglio
Keyword(s):  
Class Ii ◽  
Class I ◽  
Maxillary Incisor ◽  
Class Ii Malocclusion ◽  
Group 4 ◽  
Posttreatment Period ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

ABSTRACT Objective:  To compare the postretention stability of maxillary incisors alignment in subjects with Class I and II malocclusion treated with or without extractions. Materials and Methods:  The sample comprised 103 subjects with initial maxillary anterior irregularity greater than 3 mm and was divided into four groups: group 1 comprised 19 patients with Class I malocclusion treated with nonextraction (mean initial age = 13.06 years); group 2 comprised 19 patients with Class II malocclusion treated with nonextraction (mean initial age = 12.54 years); group 3 comprised 30 patients with Class I malocclusion treated with extractions (mean initial age = 13.16 years); group 4 comprised 35 patients with Class II malocclusion treated with extractions (mean initial age = 12.99 years). Dental casts were obtained at three different stages: pretreatment (T1), posttreatment (T2), and long-term posttreatment (T3). Maxillary incisor irregularity and arch dimensions were evaluated. Intergroup comparisons were performed by one-way analysis of variance followed by Tukey tests. Results:  In the long-term posttreatment period, relapse of maxillary crowding and arch dimensions was similar in all groups. Conclusion:  Changes in maxillary anterior alignment in Class I and Class II malocclusions treated with nonextractions and with extractions were similar in the long-term posttreatment period.

scholarly journals Three-dimensional cone-beam computed tomography comparison of shorty and standard Class II Carriere Motion appliance

2021 ◽  
Author(s):  
Brian Wilson ◽  
Nikoleta Konstantoni ◽  
Ki Beom Kim ◽  
Patrick Foley ◽  
Hiroshi Ueno
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Treatment Effects ◽  
Three Dimensional ◽  
Class Ii ◽  
Cone Beam ◽  
Class Ii Malocclusion ◽  
Dimensional Cone ◽  
Group 2 ◽  
Group 1

ABSTRACT Objectives To compare treatment effects of the standard and shorty Class II Carriere Motion appliances (CMAs) on adolescent patients. Materials and Methods Fifty adolescents with Class II malocclusion formed group 1, who were treated with shorty CMA (n = 25, 12.66 ± 1.05 years), and age- and sex–matched group 2, who were treated with standard CMA (n = 25, 12.73 ± 1.07 years). Treatment effects were analyzed by tracing with Invivo software to compare pretreatment (T1) cone-beam computed tomography (CBCT) images with post-CMA (T2) CBCT images. A total of 23 measurements were compared within and between groups. Results In groups 1 and 2, maxillary first molars showed significant distal movement from T1 to T2 (1.83 ± 2.11 mm and 2.14 ± 1.34 mm, respectively), with distal tipping and rotation in group 1 (6.52° ± 3.99° and 3.15° ± 7.52°, respectively) but only distal tipping (7.03° ± 3.45°) in group 2. Similarly, in both groups, the maxillary first premolars experienced significant distal movement with distal tipping but no significant rotation. In group 1, maxillary canines did not undergo significant distal movement. In both groups 1 and 2, mandibular first molars experienced significant mesial movement (1.85 ± 1.88 mm and 2.44 ± 2.02 mm, respectively). Group 1 showed statistically significantly less reduction in overjet and less canine distal movement with less distal tipping than group 2 (α &lt; .05). Conclusions The shorty CMA achieved Class II correction similarly to the standard CMA, with less change in overjet and distal tipping movement of the maxillary canines.

scholarly journals Lateral cephalometric diagnosis of asymmetry in Angle Class II subdivision compared to Class I and II

2014 ◽  
Vol 19 (4) ◽  
pp. 80-88 ◽  
Author(s):  
Aparecida Fernanda Meloti ◽  
Renata de Cássia Gonçalves ◽  
Ertty Silva ◽  
Lídia Parsekian Martins ◽  
Ary dos Santos-Pinto
Keyword(s):  
Class Ii ◽  
Diagnostic Methods ◽  
Class I ◽  
Linear Measurements ◽  
Morphological Alterations ◽  
Mandibular Asymmetry ◽  
Study Results ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

INTRODUCTION: Lateral cephalometric radiographs are traditionally required for orthodontic treatment, yet rarely used to assess asymmetries. OBJECTIVE: The objective of the present study was to use lateral cephalometric radiographs to identify existing skeletal and dentoalveolar morphological alterations in Class II subdivision and to compare them with the existing morphology in Class I and II relationship. MATERIAL AND METHODS: Ninety initial lateral cephalometric radiographs of male and female Brazilian children aged between 12 to 15 years old were randomly and proportionally divided into three groups: Group 1 (Class I), Group 2 (Class II) and Group 3 (Class II subdivision). Analysis of lateral cephalometric radiographs included angular measurements, horizontal linear measurements and two indexes of asymmetry that were prepared for this study. RESULTS: In accordance with an Index of Dental Asymmetry (IDA), greater mandibular dental asymmetry was identified in Group 3. An Index of Mandibular Asymmetry (IMA) revealed less skeletal and dental mandibular asymmetry in Group 2, greater skeletal mandibular asymmetry in Group 1, and greater mandibular dental asymmetry in Group 3. CONCLUSION: Both IDA and IMA revealed greater mandibular dental asymmetry for Group 3 in comparison to Groups 1 and 2. These results are in accordance with those found by other diagnostic methods, showing that lateral cephalometric radiography is an acceptable method to identify existing skeletal and dentoalveolar morphological alterations in malocclusions.

scholarly journals Three-dimensional comparative evaluation of articular disc position and other temporomandibular joint morphology in Class II horizontal and vertical cases with Class I malocclusion:

2020 ◽  
Vol 90 (5) ◽  
pp. 707-714
Author(s):  
Zynul Ali Sirsmith John ◽  
Sunita S. Shrivastav ◽  
Ranjit Kamble ◽  
Eshita Jaiswal ◽  
Rajasbala Dhande
Keyword(s):  
Temporomandibular Joint ◽  
Orthodontic Treatment ◽  
Sagittal Plane ◽  
Three Dimensional ◽  
Class Ii ◽  
Class I ◽  
Articular Disk ◽  
Disc Position ◽  
Condylar Position ◽  
Mri Evaluation

ABSTRACT Objective To evaluate and compare articular disk position, condylar position, and joint spaces in Class II vertical, Class II horizontal, and Class I cases. The purpose was to assess the potential for development of temporomandibular disorders (TMDs) in the three groups. Materials and Methods A sample of 75 cases, 25 cases in each group of Class I, Class II vertical, and Class II horizontal, were selected based on inclusion and exclusion criteria. Magnetic resonance imaging (MRI) assessments were made with a 1.5-Tesla basic system with a closed-mouth technique for evaluating articular disk position in the sagittal and transverse planes, condylar position, and joint spaces in the sagittal plane. Philips 3.0 software was used to analyze the MR images. Results There was evidence of alterations in the temporomandibular joint (TMJ) morphology in both Class II vertical and Class II horizontal cases, with maximum discrepancy in Class II vertical cases. MRI evaluation suggested a tendency for antero-medial disk displacement with anteriorly positioned condyles in Class II vertical cases. The discrepancy was milder in the Class II horizontal group. Conclusions Class II vertical cases are more susceptible to the development of TMDs and should be subjected to TMJ evaluation before starting any orthodontic treatment to intercept and prevent a mild asymptomatic TMD from developing into a more severe form. Class II vertical cases should be subjected to MRI evaluation before starting any orthodontic treatment.

scholarly journals THE PREVALENCE OF MALOCCLUSIONS IN CHILDREN AGED 6-13 YEARS LIVING IN KYIV AND KYIV REGION

2021 ◽  
pp. 42-47
Author(s):  
P.S. Flis ◽  
K.V. Ivanova ◽  
L.O. Dakhno
Keyword(s):  
Sagittal Plane ◽  
Vertical Plane ◽  
Class Ii ◽  
Normal Group ◽  
Open Bite ◽  
Class I ◽  
Class Iii ◽  
Number Of Children ◽  
Number Of Patients ◽  
The World

For many years, malocclusions have remained one of the most common dental pathologies in the world. Malocclusions are found in every second child and teenager in the world, and their prevalence does not change depending on the stage of the bite. Having polyetiological causes, malocclusions affect most body systems, which are closely related to the functions of respiration, chewing, swallowing, and speech. Our goal was to obtain up-to-date data on the prevalence of malocclusion in children during the period of mixed and early permanent occlusion. In this study, we examined 674 children aged from 6 to 13 years (with the mean age of 9.2). The examined patients' occlusion was assessed in three planes: sagittal, vertical, and transverse. In the sagittal plane, the occlusion was assessed according to Angle’s classification, children were divided into three groups according to this criterion: class I, class II, class III. The overbite was estimated in the vertical plane. Children were divided into three groups: normal group, overbite, open bite. The overlap in the lateral areas was estimated in the transverse plane. Children were divided into three groups according to this criterion: normal group, bilateral crossbite, unilateral crossbite. In 94.51% of all children aged from 6 to 13 years, living in the city of Kyiv and Kyiv region, there was a malocclusion in one of the three planes, regardless of the gender. Only 5.49% of children did not have a malocclusion. Among the total number of children examined, class I was observed in 324 children, class II in 296 children, class III in 54 children. Among all examined children aged from 6 to 13 years, overbite was diagnosed in 57.27% (386 children). The open bite was determined least often, with the incidence rate of 9.64% (65 children) among the examined 674 children. Unilateral crossbite was observed in 58 children (8.61%) among 674 subjects. In most cases, namely, in 43 children (74.14%) out of 58 children, unilateral crossbite was accompanied by the midline displacement. Bilateral crossbite was detected in 163 children (24.18%) among the total number of respondents. Bite anomalies in sagittal and vertical planes were observed in 444 children (65.88%), 91 children (13.5%) in the sagittal and transverse planes, 43 children (6.38%) in the vertical and transverse planes, and 59 children (8.75%) in all planes. Developing a strategy for early prevention and treatment of malocclusion in children, as well as eliminating bad habits are important factors in combating the growing number of patients with orthodontic pathologies. Our data indicate a high prevalence of malocclusion among children and teenagers and the need to review the prevention management and early treatment of children of this age group.

scholarly journals Pattern of malocclusion in patients seeking orthodontic treatment at Dhaka Dental College and Hospital

2015 ◽  
Vol 3 (2) ◽  
pp. 9-11
Author(s):  
Md Muklesur Rahman ◽  
Hasnat Jahan ◽  
Md Zakir Hossain
Keyword(s):  
Orthodontic Treatment ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Class Ii ◽  
Open Bite ◽  
Class I ◽  
Class Iii ◽  
Standard Format ◽  
Division 1 ◽  
Division 2

Aims: To evaluate the pattern and distribution of malocclusion in patients seeking orthodontic treatment in Dhaka Dental College Hospital.Material and Methods: Total of 400 patients were included in the study with a mean age of 19.10 years. A standard format was prepared to record the data. Ages, sex and Class I, II and III malocclusions were tabulated to cheek for any relationship.Results: The prevalence of molar class I, II, III and both (I &II) malocclusion were 61.53%, 22.56%, 8.2%, and 7.17%, respectively. The prevalence of incisors class I, class II division 1,classII division 2 and class III malocclusions were 36.92%, 39.74%, 2.56% and 14.87%. out of 400 cases the distribution of various occlusal abnormality were spacing 40%, crowding 46.92%, cross bite 23.07%, open bite 8.46%, impaction 6.41%, rotation 20%, median diastema 13.58%, absent  teeth 7.69%, mesiodense 2.51% and cleft lip and palate was 1.28%. Most prevalence  age group seeking orthodontics treatment was 16 to 20 years with female to male ratio 2.45 :1.Conclusion: class I malocclusion was the most prevalent followed by class II malocclusion and class III malocclusion showed least prevalence.Ban J Orthod & Dentofac Orthop, April 2013; Vol-3, No.2

Microleakage of class II restoration with zirconia inlay: An in vitro study

2019 ◽  
pp. 61-67
Author(s):  
Xuan Anh Ngoc Ho ◽  
Anh Chi Phan ◽  
Toai Nguyen
Keyword(s):  
Glass Ionomer Cement ◽  
Class Ii ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Group 2 ◽  
Self Etch ◽  
Ionomer Cement ◽  
Group 1 ◽  
Composite Restoration

Background: Class II restoration with zirconia inlay is concerned by numerous studies about the luting coupling between zirconia inlay and teeth. The present study was performed to evaluate the microleakage of Class II zirconia inlayusing two different luting agents and compare to direct restoration using bulk fill composite. Aims: To evaluate the microleakage of Class II restorations using three different techniques. Materials and methods: The study was performed in laboratory with three groups. Each of thirty extracted human teeth was prepared a class II cavity with the same dimensions, then these teeth were randomly divided into 3 groups restored by 3 different approaches. Group 1: zirconia inlay cemented with self-etch resin cement (Multilink N); Group 2: zirconia inlay cemented with resin-modified glass ionomer cement (Fuji Plus); Group 3: direct composite restoration using bulk fill composite(Tetric N-Ceram Bulk Fill). All restorations were subjected to thermal cycling (100 cycles 50C – 55 0C), then immersed to 2% methylene blue solution for 24 hours. The microleakage determined by the extent of dye penetration along the gingival wall was assessed using two methods: quantitative and semi-quantitative method. Results: Among three types of restorations, group 1 demonstrated the significantly lower rate of leakage compared to the others, while group 2 and 3 showed no significant difference. Conclusion: Zirconia inlay restoration cemented with self-etch resin cement has least microleakage degree when compare to class II zirconia inlay restoration cemented with resin-modified glass ionomer cement and direct composite restoration using bulk fill composite. Key words: inlay, zirconia ceramic, class II restoration, microleakage.

scholarly journals Intracoronary Injection of Autologous CD34+ Cells Improves One-Year Left Ventricular Systolic Function in Patients with Diffuse Coronary Artery Disease and Preserved Cardiac Performance—A Randomized, Open-Label, Controlled Phase II Clinical Trial

2020 ◽  
Vol 9 (4) ◽  
pp. 1043 ◽  
Author(s):  
Pei-Hsun Sung ◽  
Yi-Chen Li ◽  
Mel S. Lee ◽  
Hao-Yi Hsiao ◽  
Ming-Chun Ma ◽  
...  
Keyword(s):  
Systolic Function ◽  
Coronary Intervention ◽  
Left Ventricular ◽  
Diffuse Coronary Artery Disease ◽  
Cd34 Cells ◽  
Group 2 ◽  
Artery Disease ◽  
One Year ◽  
Lv Systolic Function ◽  
Group 1

This phase II randomized controlled trial tested whether intracoronary autologous CD34+ cell therapy could further improve left ventricular (LV) systolic function in patients with diffuse coronary artery disease (CAD) with relatively preserved LV ejection fraction (defined as LVEF >40%) unsuitable for coronary intervention. Between December 2013 and November 2017, 60 consecutive patients were randomly allocated into group 1 (CD34+ cells, 3.0 × 107/vessel/n = 30) and group 2 (optimal medical therapy; n = 30). All patients were followed for one year, and preclinical and clinical parameters were compared between two groups. Three-dimensional echocardiography demonstrated no significant difference in LVEF between groups 1 and 2 (54.9% vs. 51.0%, respectively, p = 0.295) at 12 months. However, compared with baseline, 12-month LVEF was significantly increased in group 1 (p < 0.001) but not in group 2 (p = 0.297). From baseline, there were gradual increases in LVEF in group 1 compared to those in group 2 at 1-month, 3-months, 6-months and 12 months (+1.6%, +2.2%, +2.9% and +4.6% in the group 1 vs. −1.6%, −1.5%, −1.4% and −0.9% in the group 2; all p < 0.05). Additionally, one-year angiogenesis (2.8 ± 0.9 vs. 1.3 ± 1.1), angina (0.4 ± 0.8 vs. 1.8 ± 0.9) and HF (0.7 ± 0.8 vs. 1.8 ± 0.6) scores were significantly improved in group 1 compared to those in group 2 (all p < 0.001). In conclusion, autologous CD34+ cell therapy gradually and effectively improved LV systolic function in patients with diffuse CAD and preserved LVEF who were non-candidates for coronary intervention (Trial registration: ISRCTN26002902 on the website of ISRCTN registry).

scholarly journals Evaluation of Gingival Microleakage in Class II Composite Restorations with Different Lining Techniques: An In Vitro Study

Scientifica ◽  
2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Vedavathi Bore Gowda ◽  
B. V. Sreenivasa Murthy ◽  
Swaroop Hegde ◽  
Swapna Devarasanahalli Venkataramanaswamy ◽  
Veena Suresh Pai ◽  
...  
Keyword(s):  
Study Groups ◽  
Class Ii ◽  
Composite Liner ◽  
Flowable Composite ◽  
Composite Restorations ◽  
Group 4 ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Aim. To compare the microleakage in class II composite restorations without a liner/with resin modified glass ionomer and flowable composite liner.Method. Forty standardized MO cavities were prepared on human permanent mandibular molars extracted for periodontal reasons and then divided into 4 groups of ten specimens. The cavity preparations were etched, rinsed, blot dried, and light cured and Adper Single Bond 2 is applied. Group 1 is restored with Filtek P60 packable composite in 2 mm oblique increments. Group 2 is precure group where 1 mm Filtek Z350 flowable liner is applied and light cured for 20 sec. Group 3 is the same as Group 2, but the liner was cocured with packable composite. In Group 4, 1 mm RMGIC, Fuji Lining LC is applied and cured for 20 sec. All the teeth were restored as in Group 1. The specimens were coated with nail varnish leaving 1 mm around the restoration, subjected to thermocycling, basic fuchsin dye penetration, sectioned mesiodistally, and observed under a stereomicroscope.Results. The mean leakage scores of the individual study groups were Group 1 (33.40), Group 2 (7.85), Group 3 (16.40), and Group 4 (24.35). Group 1 without a liner showed maximum leakage. Flowable composite liner precured was the best.

Sign in / Sign up

Export Citation Format

Share Document