Class II Division 1 malocclusion with a high mandibular plane angle corrected with 2-phase treatment

2009 ◽  
Vol 135 (2) ◽  
pp. 241-251 ◽  
Author(s):  
Masahiro Kurosawa ◽  
Katsuya Ando ◽  
Shigemi Goto
Keyword(s):  
Class Ii ◽  
Plane Angle ◽  
Mandibular Plane ◽  
Division 1 ◽  
Mandibular Plane Angle ◽  
Class Ii Division 1

scholarly journals Skeleto-Dental Changes After Camouflage Treatment in Class II division 1 Adult Patients with Average Mandibular Plane Angle

2011 ◽  
Vol 1 (1) ◽  
pp. 31-35
Author(s):  
Dashrath Kafle ◽  
Saruba Ulrich
Keyword(s):  
Statistical Significance ◽  
Class Ii ◽  
Plane Angle ◽  
Mandibular Plane ◽  
Division 1 ◽  
Molar Teeth ◽  
Incisor Retraction ◽  
Pre Treatment ◽  
Mandibular Plane Angle ◽  
Class Ii Division 1

Objective: To assess the skeleto-dental changes in adult Class II Division 1 patients with average mandibular plane angle after camouflage orthodontic treatment by premolars extraction. Materials and Method: Total 30 adult female patients, aged between 20-40 years with Class II Division 1 malocclusion with average mandibular plane angle (Mp-SN: 30-38) were selected for the study. Pre-treatment and post-treatment cephalographs were traced and different measurements are derived from skeletal and dental landmarks. Statistical analysis was done by paired t-test using SPSS software version 16.00. Results: SNA, SNB and ANB angles were reduced significantly. The maxillary length was also decreased significantly. However mandibular dimension was not changed significantly after camouflage treatment. The upper and lower incisors were significantly intruded whereas upper molar was slightly intruded and lower molar was significantly extruded. Antero-posteriorly, incisors were retracted significantly. Upper molars had negligible mesial movement however lower molars had moved mesially with statistical significance. Conclusion: During camouflage treatment care should be taken on incisor retraction. The vertical control of the molar teeth is important during the treatment period to avoid worsening of the facial proportion.

scholarly journals Effects of Class II division 1 malocclusion treatment with three types of fixed functional appliances

2019 ◽  
Vol 24 (5) ◽  
pp. 30-39 ◽  
Author(s):  
Deborah Brindeiro de Araújo Brito ◽  
José Fernando Castanha Henriques ◽  
Camilla Foncatti Fiedler ◽  
Guilherme Janson
Keyword(s):  
Class Ii ◽  
Control Group ◽  
Test Results ◽  
Maxillary Molars ◽  
Mandibular Plane ◽  
Intergroup Comparison ◽  
Division 1 ◽  
Functional Appliances ◽  
Vertical Development ◽  
Class Ii Division 1

ABSTRACT Objective: This study aimed at comparing the dentoskeletal changes in patients with Class II division 1 malocclusion, treated with three types of fixed functional appliances. Methods: A sample comprising 95 patients with the same malocclusion, retrospectively selected, and divided into four groups, was used: G1 consisted of 25 patients (mean age 12.77 ± 1.24 years) treated with Jasper Jumper appliance; G2, with 25 patients (mean age 12.58 ± 1.65 years) treated with the Herbst appliance; G3, with 23 patients (mean age 12.37 ± 1.72 years) treated with the Mandibular Protraction Appliance (MPA); and a Control Group (CG) comprised of 22 untreated subjects (mean age 12.66 ± 1.12 years). Intergroup comparison was performed with ANOVA, followed by Tukey test. Results: The Jasper Jumper and the Herbst group showed significantly greater maxillary anterior displacement restriction. The Jasper Jumper demonstrated significantly greater increase in the mandibular plane angle, as compared to the control group. The MPA group demonstrated significantly greater palatal inclination of the maxillary incisors. Vertical development of the maxillary molars was significantly greater in the Herbst group. Conclusions: Despite some intergroup differences in the amount of dentoskeletal changes, the appliances were effective in correcting the main features of Class II malocclusions.

scholarly journals Literature Review of the Concepts of Condylar Resorption, Incidences during Orthodontic and after Orthognathic Surgery and Treatment Measures

2021 ◽  
Vol 7 (3) ◽  
Author(s):  
Alrezami K ◽  
Pu Y
Keyword(s):  
Orthognathic Surgery ◽  
Case Reports ◽  
Class Ii ◽  
Clear Understanding ◽  
Plane Angle ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Mandibular Plane ◽  
Treatment Measure ◽  
Mandibular Plane Angle

Condylar resorption and its incidence at an early age or after orthognathic surgery are well-documented issues, but it is associated with high controversies regarding its etiology and management. Lack of clear understanding of its pathogenies and the limitation of the available evidence inherited for the development of a systematic treatment approach and most previous studies recommended further investigation of the problem. This review aims to cover the problem of condylar resorption and its association with orthodontic and orthognathic surgery as well as to discuss the prospective treatment measure available through the literature. According to the available literature, most previous studies covered the condylar resorption of this type of patient (skeletal class II with high mandibular plane angle) following the orthognathic surgery. However, no studies investigated the long-term condition of the condyles of the involved patient before the surgery. Furthermore, there is no evidence for the orthodontic management of this challenging condition, and most recommendations come from case reports. So, it is crucial to assess the changes that happened to the condyle during the preoperative orthodontic and correlate the finding with what happened after the surgery to provide clear evidence that may help further understand the problem of condylar resorption. This evidence could be beneficial for both patients and clinicians. CT or CBCT images have been regarded as the best choice of detailed diagnosis and investigation of condylar resorption. The incidence of condylar resorption after orthognathic surgery with or without disc repositioning of skeletal class II with high mandibular plane angle is extremely suspected. However, artificial joint replacement is considered a gold standard treatment measure in severe or relapsed cases.

scholarly journals A Modified Three-piece Base Arch for en masse Retraction and Intrusion in a Class II Division 1 Subdivision Case

2017 ◽  
Vol 6 (1) ◽  
pp. 26-32
Author(s):  
Dhaval Ranjitbhai Lekhadia ◽  
Gautham Hegde
Keyword(s):  
Class Ii ◽  
Maxillary Incisor ◽  
Orthopedic Treatment ◽  
Deep Bite ◽  
Mandibular Plane ◽  
Final Treatment ◽  
Division 1 ◽  
En Masse Retraction ◽  
Selection Of ◽  
Class Ii Division 1

ABSTRACT This case report describes the orthodontic and orthopedic treatment of an 18-year-old male patient who presented with prognathic maxilla, deep bite, low mandibular plane angle, and proclined incisors. Modified three-piece base arch was used for the intrusion and retraction of maxillary incisor. En masse retraction was achieved in 6 months. Reduced time for retraction was attributed to a single stage of retraction unlike Burstone three-piece intrusion base arch where canines are individually retracted followed by retraction of incisors. A modified utility arch was used in lower arch followed by a continuous archwire technique. The case was finished using bite settling elastics on a continuous archwire. The step between canine and premolar was corrected in the finishing phase of treatment. The final treatment outcomes were satisfactory and true intrusion was achieved with proper selection of biomechanics. How to cite this article Lekhadia DR, Hegde G. A Modified Three-piece Base Arch for en masse Retraction and Intrusion in a Class II Division 1 Subdivision Case. Int J Experiment Dent Sci 2017;6(1):26-32.

scholarly journals Dental, skeletal and soft tissue effects of the Distal Jet appliance: A prospective clinical study

2019 ◽  
Vol 24 (6) ◽  
pp. 56-64 ◽  
Author(s):  
Rachelle Simões Reis ◽  
José F. C. Henriques ◽  
Guilherme Janson ◽  
Karina Maria Salvatore Freitas ◽  
Wilana Moura
Keyword(s):  
Soft Tissue ◽  
Class Ii ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Plane Angle ◽  
Tissue Effects ◽  
Mandibular Plane ◽  
Maxillary Incisors ◽  
Distal Jet ◽  
Mandibular Plane Angle

ABSTRACT Objective: This study evaluated the dental, skeletal and soft tissue effects in Class II malocclusion patients treated with Distal Jet appliance, compared to an untreated control group. Methods: 44 patients with Class II malocclusion were divided into two groups: Group 1 (experimental) - 22 patients, mean age of 12.7 years, treated with the Distal Jet appliance for a mean period of 1.2 years; Group 2 (control) - 22 untreated patients, mean age of 12.2 years, followed by a mean period of 1.2 years. Lateral cephalograms were obtained before treatment (T0) and at the end of the distalization (T1).Independent t test was used to identify intergroup differences. Results: When compared to control group, the Distal Jet produced a significant increase in mandibular plane angle (0.7 ± 2.0o). The maxillary second molars presented distal inclination (6.6 ± 3.8o), distalization (1.1 ± 1.1 mm) and extrusion (1.3 ± 2.1 mm). The maxillary first molars distalized by 1.2 ± 1.4 mm. The maxillary first premolars mesialized by 3.4 ± 1.1 mm. The maxillary incisors showed slight labial tipping of 4.3 ± 4.7o and were protruded by 2.4 ± 1.7 mm. There were no significant changes in the facial profile. The overjet increased 1.5 ± 1.1 mm and overbite had no significant changes. Conclusion: The Distal Jet appliance is effective to distalize the maxillary first molars, but promotes increase in mandibular plane angle, distal inclination, extrusion and distalization of maxillary second molars, mesialization of maxillary first premolars, proclination and protrusion of maxillary incisors, and increase in overjet, when compared to a control group.

An alternative for the correction of the Class II low mandibular plane angle

1989 ◽  
Vol 67 (3) ◽  
pp. 231-241 ◽  
Author(s):  
Anthony G.H. McCollum ◽  
Johann P. Reyneke ◽  
Larry M. Wolford
Keyword(s):  
Class Ii ◽  
Plane Angle ◽  
Mandibular Plane ◽  
Mandibular Plane Angle
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