Relationship Between Cervical Lordosis and Facial Morphology in Caucasian Women with a Skeletal Class II Malocclusion: A Cross-Sectional Study

ABSTRACT Objective: The purpose of this study was to establish the association between sagittal and vertical skeletal patterns and assess which cephalometric variables contribute to the possibility of developing skeletal Class II or Class III malocclusion. Methods: Cross-sectional study. The sample included pre-treatment lateral cephalogram radiographs from 548 subjects (325 female, 223 male) aged 18 to 66 years. Sagittal skeletal pattern was established by three different classification parameters (ANB angle, Wits and App-Bpp) and vertical skeletal pattern by SN-Mandibular plane angle. Cephalometric variables were measured using Dolphin software (Imaging and Management Solutions, Chatsworth, Calif, USA) by a previously calibrated operator. The statistical analysis was carried out with Chi-square test, ANOVA/Kruskal-Wallis test, and an ordinal multinomial regression model. Results: Evidence of association (p< 0.05) between sagittal and vertical skeletal patterns was found with a greater proportion of hyperdivergent skeletal pattern in Class II malocclusion using three parameters to assess the vertical pattern, and there was more prevalent hypodivergence in Class III malocclusion, considering ANB and App-Bpp measurements. Subjects with hyperdivergent skeletal pattern (odds ratio [OR]=1.85-3.65), maxillary prognathism (OR=2.67-24.88) and mandibular retrognathism (OR=2.57-22.65) had a significantly (p< 0.05) greater chance of developing skeletal Class II malocclusion. Meanwhile, subjects with maxillary retrognathism (OR=2.76-100.59) and mandibular prognathism (OR=5.92-21.50) had a significantly (p< 0.05) greater chance of developing skeletal Class III malocclusion. Conclusions: A relationship was found between Class II and Class III malocclusion with the vertical skeletal pattern. There is a tendency toward skeletal compensation with both vertical and sagittal malocclusions.

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ORTHODONTIC PATIENTS

The Professional Medical Journal ◽

10.29309/tpmj/2011.18.04.2648 ◽

2011 ◽

Vol 18 (04) ◽

pp. 611-614

Author(s):

RANA MODASSIR SHAMSHER KHAN ◽

ALI SAAD TARIQ

Keyword(s):

Total Sample ◽

Class Ii ◽

Cross Sectional Study ◽

Class Ii Malocclusion ◽

Class Iii ◽

Sectional Study ◽

Class Iii Malocclusion ◽

Cross Sectional ◽

Orthodontic Patients ◽

Males And Females

Objectives: To find out the prevalence of malocclusion in patients visiting orthodontic department of Lahore medical and dental college (LMDC). Study Design: It is a cross sectional study. Place of study: Orthodontic department, Lahore medical and dental College. Lahore. Material and methods: Malocclusion was clinically examined by using Angle’s classification in 1143 patients (708 girls and 435 boys). Results: Class I malocclusion was found in 23.27% of the total sample. Class II malocclusion was found in 53.19% and Class III malocclusion in 8.66% of sample. No statistically significant differences were found in distribution of malocclusion between males and females. Conclusions: The study revealed that Class II malocclusion predominated among patients visiting orthodontic department of LMDC.

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Comparison of Airway Morphology and Volume in Skeletal Class I and Class II Patients Using Cone-beam Computed Tomography: A Cross-sectional Study

World Journal of Dentistry ◽

10.5005/jp-journals-10015-1754 ◽

2020 ◽

Vol 11 (5) ◽

pp. 380-385

Author(s):

Silju Mathew ◽

Sharanya Sabrish ◽

Deaby M Aby ◽

Roshan M Sagarkar ◽

GS Prashantha

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Class Ii ◽

Cross Sectional Study ◽

Class I ◽

Cone Beam ◽

Sectional Study ◽

Cross Sectional ◽

Skeletal Class ◽

Airway Morphology

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Uso de propulsor mandibular fixo Flex Developer como recurso no tratamento da Classe II em paciente não colaborador

Orthodontic Science and Practice ◽

10.24077/2020;1352-4051 ◽

2020 ◽

Vol 13 (52) ◽

pp. 40-51

Author(s):

Renato Barcellos Rédua

Keyword(s):

Upper Airway ◽

Class Ii ◽

Class Ii Malocclusion ◽

Skeletal Class ◽

Advantages And Disadvantages ◽

Skeletal Class Ii ◽

High Incidence ◽

Therapeutic Alternatives ◽

Smile Aesthetics ◽

Treatment Alternatives

Class II malocclusion has a high incidence in the population, which may compromise smile aesthetics, occlusion function and stability. Skeletal Class II may affect facial aesthetics and upper airway volume. Class II malocclusion is routinely associated with skeletal Class II condition, having as treatment alternatives the use of Extra Buccal Appliance (EBA) or removable or fixed propulsor appliance. This article describes a case of a patient who did not accept the use of EBA and so it was fitted a Flex Developer propulsor for Class II correction and discussed the advantages and disadvantages of therapeutic alternatives for Class II correction.

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Evaluation of 3D Printed Modified Twin Block for Correction of Skeletal Class II Malocclusion in Growing Females

Case Medical Research ◽

10.31525/ct1-nct04028661 ◽

2019 ◽

Author(s):

Keyword(s):

Class Ii ◽

Class Ii Malocclusion ◽

Twin Block ◽

Skeletal Class ◽

Skeletal Class Ii ◽

3D Printed

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A Comparison of Five Different Methods for Describing Sagittal Jaw Relationship

British Journal of Orthodontics ◽

10.1179/bjo.20.1.13 ◽

1993 ◽

Vol 20 (1) ◽

pp. 13-17 ◽

Cited By ~ 4

Author(s):

Johannes Kirchner ◽

Stephen Williams

Keyword(s):

Correlation Analysis ◽

Treatment Planning ◽

Class Ii ◽

Diagnosis And Treatment ◽

Class Ii Malocclusion ◽

Skeletal Class ◽

Skeletal Class Ii ◽

Accurate Picture

Analysis of sagittal jaw relationship is important in orthodontic diagnosis and treatment planning, and can be investigated by angular or linear parameters. In the present study an analysis was performed using profile cephalograms of 40 children with skeletal Class II malocclusion. A correlation analysis is presented, involving five different methods of expressing sagittal jaw relationships. Whilst some degree of agreement could be noted, it was not possible to suggest a pair of measurements, which in combination, could give a more accurate picture of sagittal jaw relationships.

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Abordagem precoce da má oclusão de Classe II esquelética com atresia maxilar e mordida aberta anterior e o uso de alinhadores ClearCorrect – relato de caso

Orthodontic Science and Practice ◽

10.24077/2021;1453-97106 ◽

2021 ◽

Vol 14 (53) ◽

pp. 97-106

Author(s):

Roberto Hideo Shimizu ◽

Isabela Almeida Shimizu ◽

Ana Cláudia M. Melo Toyoffuku ◽

Rebecca Marquesini ◽

Tatiane Travizan Lima ◽

...

Keyword(s):

Treatment Time ◽

Low Complexity ◽

Class Ii ◽

Open Bite ◽

Class Ii Malocclusion ◽

Anterior Open Bite ◽

Skeletal Class ◽

Posterior Crossbite ◽

Skeletal Class Ii ◽

High Predictability

Adequate planning and early treatment of Angle Class II malocclusion with maxillary atresia and anterior open bite provides harmonization of maxillomandibular bone bases in the three planes of space. Orthodontic aligners have emerged as an alternative treatment having the following advantages: being more aesthetic and more comfortable for the patient, less treatment time when they are correctly indicated, less chairside time, less complications, possibility of remote monitoring, easier feeding, and dental hygiene. On the other hand, they offer difficulties to treat adults with severe skeletal Class II malocclusions, posterior crossbite and anterior open bite. Therefore, the objective of this clinical case report is to early correct skeletal Class II malocclusion with maxillary atresia through the use of mechanical orthopedics and devices that help eliminate habits and close the anterior open bite, and later the use of orthodontic aligners to finish the treatment. It was concluded that the early interceptive treatment of malocclusion was efficient to harmonize the bone bases in the anteroposterior, vertical, and transversal directions, changing this malocclusion from high to low complexity and, consequently, highly predictable and with an excellent prognosis for treatment with orthodontic aligners. The treatment with ClearCorrect aligners corrected the occlusion in a shorter period of time when compared to corrective orthodontics and with a high predictability in relation to the virtual setup.

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