scholarly journals The stability of occlusal plane rotation during orthognathic surgery

2021 ◽  
Vol 33 (1) ◽  
pp. 82-96
Author(s):  
Samuel C. Bennett
Keyword(s):  
Orthognathic Surgery ◽  
Occlusal Plane ◽  
Plane Rotation ◽  
The Stability

Occlusal Plane Rotation

1993 ◽  
Vol 91 (7) ◽  
pp. 1241-1244 ◽  
Author(s):  
Harvey M. Rosen ◽  
Jeffrey C. Posnick ◽  
Jeffrey C. Posnick
Keyword(s):  
Occlusal Plane ◽  
Plane Rotation

scholarly journals Changes in occlusal plane through orthognathic surgery

2012 ◽  
Vol 17 (4) ◽  
pp. 160-173 ◽  
Author(s):  
Lucas Senhorinho Esteves ◽  
Carolina Ávila ◽  
Paulo José Medeiros
Keyword(s):  
Surgical Treatment ◽  
Functional Outcomes ◽  
Orthognathic Surgery ◽  
Functional Results ◽  
Clinical Results ◽  
Occlusal Plane ◽  
Functional Disorders ◽  
Dentofacial Deformities ◽  
Treatment Objective ◽  
Surgical Manipulation

INTRODUCTION: A conventional ortho-surgical treatment, although with good clinical results, does not often achieve the desired functional outcomes. Patients with dentofacial deformities, especially those with increased occlusal planes (OP), are also affected by muscle, joint and breathing functional disorders, as well as facial esthetic involvement. The surgical manipulation of the OP in orthognathic surgery is an alternative to overcome the limitations of conventional treatment. OBJECTIVE: To report the importance of assessing the occlusal plane during diagnosis, planning and ortho-surgical treatment of patients with facial skeletal deformities and its main advantages. CONCLUSION: Although both philosophies of ortho-surgical treatment (conventional and by surgical manipulation of the OP) have presented good results, the selective correction of the OP allows a full treatment of these patients, providing better esthetic and functional results.

scholarly journals Aggravation of Gummy Smile by Straight-Wire Mechanics and its Management with or without Orthognathic Surgery Up to 10-Year Follow-Up

2018 ◽  
Vol 8 ◽  
pp. 96-109
Author(s):  
Tsang Tsang Franklin She ◽  
Raymond Lop Keung Chow
Keyword(s):  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Occlusal Plane ◽  
Specialist Care ◽  
Straight Wire ◽  
Female Patients ◽  
Treatment Objective ◽  
General Dentists ◽  
Gummy Smile

Two female patients presented with gummy smile, maxillary dentoalveolar protrusion and total vertical maxillary excess, retroclined incisors, and increased overbite received orthodontic camouflage with straight-wire mechanics by general dentists. The treatments caused severe bowing of upper occlusal plane which aggravated the gummy smile and had led them to seek specialist care. They were successfully managed by orthodontic camouflage and combined surgical-orthodontic treatment, respectively, in conjunction with the application of miniscrews on straight-wire mechanics. Aggravation of gummy smile by straight-wire mechanics, use of visual treatment objective to differentiate between orthodontic camouflage and surgical cases, and LeFort I segmentalization were discussed.

scholarly journals Removal Torque Analyses of Two Self-drilling Orthodontic Temporary Anchorage Devices (TADs)

2019 ◽  
pp. 64-67 ◽  
Author(s):  
Mahfud F Mohamed
Keyword(s):  
Occlusal Plane ◽  
Coil Spring ◽  
Removal Torque ◽  
Temporary Anchorage Devices ◽  
Significant Difference ◽  
Maxillary Molar ◽  
Orthodontic Patients ◽  
Group 2 ◽  
The Stability ◽  
The Moment

Stability of miniscrews or Temporary Anchorage Devices (TADs) is an essential factor for successful application in orthodontics. Miniscrews removal torque can be used as an indicator of miniscrews stability. The objective of this work was to compare removal torque between self-drilling tapered mini-screws and cylindrical miniscrews. Materials and Methods: Two groups of TADs were inserted in the maxillae of orthodontic patients to provide stationary anchorage for front teeth retraction. Group 1: 20 tapered self-drilling miniscrews, Group 2: 20 cylindrical self-drilling miniscrew. Split mouth technique was used. All of the TADs were inserted parallel to the occlusal plane, between roots of the 2nd maxillary premolar and 1st maxillary molar. The TADs were immediately loaded with constant and continuous load using 8 mm long heavy short Nickel Titanium coil spring. The coil spring was stretched between the heads of the two types of TADs and crimpable hooks that fixed on arch wire just distal to the anterior six maxillary teeth. After complete retraction of the anterior maxillary teeth, TADs were removed using torque adjustable screw-removal. At the moment of movement of the TAD the torque was recorded in Newton Centimeter (Ncm). Results: Mann Whitney U Test resulted in a significant difference between the two groups, indicating that cylindrical TADs had significantly higher removal torque than tapered TADs (means were 3.20 Ncm ± 0.20 and 2.70 Ncm ± 0.10 respectively). Conclusion: Physical properties have a considerable influence on the stability of the TADs. Cylindrical TADs are showed more mechanical interlock into the bone.

O propulsor mandibular pode ser usado com incisivos inferiores vestibularizados?

2020 ◽  
Vol 13 (52) ◽  
pp. 81-87
Author(s):  
Stenyo Wanderley Tavares ◽  
Marjorie Barbosa de Almeida Oliveira
Keyword(s):  
Clinical Case ◽  
Class Ii ◽  
Occlusal Plane ◽  
Plane Rotation ◽  
Class Ii Treatment ◽  
Dental Compensation ◽  
Lower Incisors

An excellent alternative to Class II treatment are fixed mandibular propulsion appliances. In general, they are devices that do not cause significant changes in the maxilla or mandible because they promote Class II correction primarily by dental alterations through an increase in the lower incisors inclination, decrease of upper incisors inclination, and occlusal plane rotation. The question is if it is possible to use this type of device, even with the lower dental compensation already present, that is, with the lower incisors vestibularized. The objective of this study is to show through a clinical case the use of mandibular propulsion with this type of malocclusion.

scholarly journals Alteration of Occlusal Plane in Orthognathic Surgery: Clinical Features to Help Treatment Planning on Class III Patients

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Daniel Amaral Alves Marlière ◽  
Tony Eduardo Costa ◽  
Saulo de Matos Barbosa ◽  
Rodrigo Alvitos Pereira ◽  
Henrique Duque de Miranda Chaves Netto
Keyword(s):  
Treatment Planning ◽  
Clinical Features ◽  
Orthognathic Surgery ◽  
Occlusal Plane ◽  
Definitive Treatment ◽  
Class Iii ◽  
Lower Lip ◽  
Dentofacial Deformities ◽  
Bimaxillary Orthognathic Surgery ◽  
Nasolabial Folds

Dentofacial deformities (DFD) presenting mainly as Class III malocclusions that require orthognathic surgery as a part of definitive treatment. Class III patients can have obvious signs such as increasing the chin projection and chin throat length, nasolabial folds, reverse overjet, and lack of upper lip support. However, Class III patients can present different facial patterns depending on the angulation of occlusal plane (OP), and only bite correction does not always lead to the improvement of the facial esthetic. We described two Class III patients with different clinical features and inclination of OP and had undergone different treatment planning based on 6 clinical features: (I) facial type; (II) upper incisor display at rest; (III) dental and gingival display on smile; (IV) soft tissue support; (V) chin projection; and (VI) lower lip projection. These patients were submitted to orthognathic surgery with different treatment plannings: a clockwise rotation and counterclockwise rotation of OP according to their facial features. The clinical features and OP inclination helped to define treatment planning by clockwise and counterclockwise rotations of the maxillomandibular complex, and two patients undergone to bimaxillary orthognathic surgery showed harmonic outcomes and stables after 2 years of follow-up.

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