In contrast the protrusion of upper lip and maxillary retrusion were the phenotypic features that contributed to class III in the majority of families. (dovepress.com)
Cephalometric analysis found a skeletal Class III pattern, with an ANB angle of -4.7° caused by a combination of maxillary retrusion and mandibular protrusion ( Table 1 ). (jco-online.com)
The authors hoped that systematic study of the effects of two mechanisms (mandibular vs. tongue protrusion) on upper airway size and shape would lead to better understanding of how they might work. (weeksmd.com)
They thought that mandibular and tongue protrusion might both increase upper airway size, but in different parts of the upper airway. (weeksmd.com)
Because the patients and controls showed no differences in effects of mandibular or tongue protrusion on upper airway cross-sectional area (CSA) or on airway shape (and presumably also because of the small numbers of subjects) the data for patients and controls were pooled for most analyses. (weeksmd.com)
Over all three sections of the pharynx where CSA was measured (in descending anatomical order: velopharynx, oropharynx, and hypopharynx), the average effects of mandibular and tongue protrusion on CSA were a 33% increase with half-maximal protrusion and a 90% increase with maximal protrusion. (weeksmd.com)
Maximal mandibular protrusion doubled the CSA (102% SD=72%) in the hypopharynx (the lowest level, from the larynx to the esophagus) and increased it significantly by 50% (SD=29%) in the oropharynx, but nonsignificantly increased it by 44% (SD=65%) in the velopharynx (the highest level, at the soft palate and nasopharyngeal wall). (weeksmd.com)
some subjects actually decreased their CSA in this area with maximal mandibular protrusion. (weeksmd.com)
Mandibular protrusion increased CSA in the hypopharynx significantly more than in the oropharynx or velopharynx. (weeksmd.com)
The exercises of myofunctional therapy consisted of active and passive simple movements of opening and closing the mouth, tongue protrusion and retrusion, digital manipulation and also by using an electric massager on intraoral and perioral region of the masseter, buccinator and orbicularis oris. (minervamedica.it)
A class III skeletal relationship can occur as a result of a normal maxilla with mandibular protrusion, maxillary retrusion with a normal mandible, or a combination of maxillary retrusion and mandibular protrusion. (aestheticadvantage.com)
Mandible10
Correspondingly, retrusion of the mandible and tongue decreased CSA, but this reached significance only in the oropharynx (the middle level, between the soft palate and the epiglottis). (weeksmd.com)
The present study was carried out to investigate the degree of extra retrusion of the mandible under general anesthesia and to determine the characteristics in each of the three original skeletal class patterns in a Japanese population. (hokudai.ac.jp)
This retrospective cephalometric study indicates that FR II appliance therapy in skeletal class II malocclusion with retrognathic mandible during active growth phase brings about the correction of anteroposterior maxillo-mandibular relationship that remains stable over long term. (jioh.org)
Retrusion of the mandible (lower jaw) and/or mandibular teeth.A clockwise rotation of the mandible with increased vertical component can create a Class II skeletal arrangement. (langleybracesandorthodontics.com)
The maxillary teeth can be protrusive, the maxilla can be protrusive, the mandible can be retrusive, the mandibular teeth can be retrusive, the maxilla can be retrusive and the mandible can be retrusive, etc… , and vertical dimension can affect these relationships as well. (langleybracesandorthodontics.com)
The more growth available, the more lower mandible jaw movement occurs and with less growth the lower mandibular teeth will move forward relative to the lower jaw. (langleybracesandorthodontics.com)
This approach can effectively promote maxillary growth and inhibit mandibular growth but is associated with side effects such as labial proclination of the maxillary incisors, clockwise rotation of the mandible, and an increase in the height of the lower third of the face due to the loss of anchorage. (e-kjo.org)
The craniofacial characteristics that showed more resemblance between parents and offspring were middle facial height, shorter anterior cranial base and mandibular prognathism. (dovepress.com)
Maxillary hypoplasia is caused by underdevelopment of the maxillary bones, which produces midfacial retrusion and creates the illusion of mandibular prognathism. (smbalaji.com)
Some orthodontic problems that cause the position and volume of the maxillary bones may recur: mandibular prognathism, open occlusion, deep occlusion, mandibular retrusion. (ortodont-clujnapoca.ro)
The clinical dental examination, based on the concepts proposed by Arnett Gunson, revealed a Class III dentofacial deformity, a Class III occlusal relationship, anteroposterior maxillary deficiency, bilateral and anterior crossbite with mandibular prognathism. (actascientific.com)
Malocclusion9
Thumbsucking can also cause the maxillary central incisors to tip labially and the mandibular incisors to tip lingually, resulting in an increased overjet and anterior open bite malocclusion, as the thumb rests on them during the course of sucking. (wikipedia.org)
Methods: Fourteen Class II malocclusion subjects in growing age with mandibular retrusion were selected. (journalcra.com)
2 The most prevalent feature of this malocclusion is mandibular retrusion. (bhmedsoc.com)
But predominantly has dental effects like the retroclination biphasic treatment of Class II division 1 malocclusion using Twin Block appliance coordinated with fixed orthodontics of maxillary incisors and proclination of mandibular incisors which aid in correction of incisor relationship. (bhmedsoc.com)
Oromaxillofacial surgical treatment may be indicated for the patient with skeletal class II malocclusion, where whether or not mandibular advance is associated with interventions of the maxilla. (bvsalud.org)
Background: To evaluate the profile changes following orthopedic/orthodontic treatment with the Herbst Miniscope® appliance in subjects affected with Class II malocclusion with mandibular retrusion. (unisa.it)
Moreover, maxillary retrusion was found to be the most contributory factor to a skeletal Class III malocclusion. (pocketdentistry.com)
Class II malocclusion is defined by a molar tooth relationship where the lower mandibular molar is back relative to the upper maxillary molar. (langleybracesandorthodontics.com)
Edward H. Angle described class III malocclusion as one in which the mandibular first molar is positioned mesially relative to the maxillary first molar (Angle 1900). (aestheticadvantage.com)
Skeletal Class II3
Results Retrusion in the supine position under general anesthesia was observed in all skeletal classes, and it was significantly greater in skeletal Class II, compared to skeletal Class I and Class III. (hokudai.ac.jp)
Patient with skeletal class II deformity, with lack of mandibular definition and submandibular flaccidity, underwent bimaxillary advancement orthognathic surgery with advancement genioplasty to correct chin retrusion. (ijodontostomatology.com)
Skeletal Class II is usually characterized by mandibular retrusion and the gold standard for treatment is orthognathic surgery but borderline Class II cases can also be treated with some other protocols such as growth modification in adolescents and camouflage treatment in adults. (kongresous.com)
Incisors11
In addition to proclination of the maxillary incisors, mandibular incisors retrusion will also happen. (wikipedia.org)
Although the second option would resolve the anterior crossbite, the mandibular incisors would be tipped back even more, which could jeopardize the dental-periodontal relationship in the lower incisor region. (jco-online.com)
5,7 Our solution was to use a transparent thermoformed retainer in the mandibular arch to maintain the lingual inclination of the compensated lower incisors while the Class III elastics were applied ( Fig. 2 ). (jco-online.com)
The change of the alveolar bone crest in this incisors might affect the maxillary and mandibular bone height post-treatment. (ugm.ac.id)
She had a low lip line upon smiling, displaying half the clinical crown height of the maxillary incisors along with the mandibular teeth. (pocketdentistry.com)
There was anterior crowding, with the maxillary lateral incisors blocked in, and the maxillary and mandibular canines blocked out. (pocketdentistry.com)
The maxillary and mandibular incisors were upright, and the soft-tissue analysis confirmed lip retrusion with an increased value of the Holdaway line to the tip of the nose ( Fig 4 , Table I ). The skeletal age as assessed from the lateral cephalometric radiograph was 12 years 8 months. (pocketdentistry.com)
modification of dental eruption and improvement of relationship of maxillary and mandibular incisors, profile (Flores-Mir & Major, 2006). (bvsalud.org)
In comparison with the tooth-anchored groups, the bone-anchored groups showed significantly more increases in Sella-Nasion-Subspinale (°), Subspinale-Nasion-Supramentale(°) and significantly fewer increases in mandibular plane angle and the labial proclination angle of upper incisors. (e-kjo.org)
IMPA (angle of lower incisors and mandibular plane) decreased in groups with facemasks and increased in other groups. (e-kjo.org)
However, strengthening anchorage could not inhibit mandibular growth better and the lingual inclination of lower incisors caused by the treatment is related to the use of a facemask. (e-kjo.org)
Orthodontic treatment1
Cephalometric superimposition on cranial base is the accepted method for evaluating mandibular displacement during orthodontic treatment and/or growth. (glassbox.tv)
Advancement3
SAM is a device designed to optimize the mandibular advancement manoeuvre during DISE. (vecmedical.com)
It can also be used in dental clinics to register the construction bite for the fabrication of the mandibular advancement device. (vecmedical.com)
Doctors quote:" During the growth phase, teenagers are the perfect candidates for using Invisalign + ITMA (mandibular advancement), this enables us to perform the leveling, the intercuspation of the teeth and the adaptation of the bone base more easily. (invisaligngallery.com)
Orthognathic surgery1
Introduction In orthognathic surgery, we often experience that model mounting by the occlusal bite record taken at centric relation under the conscious condition in the sitting position does not always correctly replicate the actual maxilla-mandibular relationship under general anesthesia. (hokudai.ac.jp)
Chin retrusion5
Age-related chin retrusion and resorption can alter the shape and projection of the chin, disrupting facial harmony. (jcadonline.com)
Hyaluronic acid-based dermal fillers offer a temporary, non-surgical option to correct mild to moderate chin retrusion and resorption. (jcadonline.com)
In this case series of three patients, we sought to describe a modified injection technique of the chin with hyaluronic acid-based filler using a tapered lateral to medial approach aimed at correcting mild to moderate chin retrusion and resorption. (jcadonline.com)
The technique focuses on re-volumizing mild to moderate chin retrusion and resorption by restoring age-related losses from bone and the deep fat compartments. (jcadonline.com)
This injection technique is indicated for patients who present with mild to moderate chin retrusion and resorption. (jcadonline.com)
Correction2
Once correction was achieved and orthopedics, most especially time, potential, and confirmed by mandibular manipulation, they used direction of growth (Bishara, Peterson, & Bishara, bionator only during sleep, eight to ten hours a day. (bvsalud.org)
Depending on the amount of skeletal discrepancy, surgical correction may consist of mandibular retraction, maxillary protraction, or a combination of both procedures. (aestheticadvantage.com)
Maxilla2
A physical misalignment of the upper (maxilla) and lower (mandibular) jaw bones in which either or both recede relative to the frontal plane of the forehead. (nih.gov)
The classic features of Apert syndrome, including the broad skull, bulging in the temporal area, and retrusion and vertical shortening of the maxilla. (medscape.com)
Teeth2
Central incisor teeth are the teeth that mostly undergone more movement during retrusion. (ugm.ac.id)
This can force the mandibular teeth forward, stressing the gum tissues enough to risk the need for gum grafting (take a patch of tissue from the palate to be placed over the lower mandibular anterior teeth roots. (langleybracesandorthodontics.com)
Midline1
The maxillary dental midline was deviated slightly to the patient's right in relation to the facial midline, whereas the mandibular midline was deviated to the left, leading to a 3-mm dental midline discrepancy ( Figs 1 and 2 ). (pocketdentistry.com)
Tratamento1
O paciente portador de maloclusão esquelética de Classe II pode ter indicação de tratamento cirúrgico bucomaxilofacial, com avanço mandibular associado ou não a intervenções na maxila. (bvsalud.org)
Bone1
Reduction in chin size is due to age-related mandibular bone resorption, resulting in loss of mandibular height and length. (jcadonline.com)
Distraction2
Typical airway changes after mandibular distraction. (medscape.com)
An effective surgical intervention is mandibular distraction osteogenesis (MDO). (sciencegate.app)
Restraining the maxillary1
The skeletal effects are acceleration of mandibular growth and restraining the maxillary growth. (bhmedsoc.com)
Arch3
It has been maintained that because of large adenoids, nasal breathing is obstructed leading to mouth breathing and an 'adenoid face', characterized by an incompetent lip seal, a narrow upper dental arch, increased anterior face height, a steep mandibular plane … From the first theory in 1940s, many different ideas pertaining to how a face develops has intrigued the mind of researchers and clinicians alike. (glassbox.tv)
She displayed severe Class III antero-posterior relationships, a reverse anterior overjet, maxillary transverse constriction, and wide buccal corridors, with moderate crowding in the maxillary arch and minimal crowding in the mandibular arch. (jco-online.com)
The arch-length deficiencies were 10.5 mm in the maxillary arch and 6.5 mm in the mandibular arch. (pocketdentistry.com)
Displacement1
Headgear is usually worn at night and is used to treat a backward displacement of the lower jaw (mandibular retrusion). (vunder-ortho.ch)
Facial1
Class II skeletal and dental disparities due to mandibular retrusion have been termed as a major type of facial eccentricity. (jioh.org)
Crouzon1
Typical appearance of a patient with Crouzon syndrome, with maxillary retrusion, exorbitism, and pseudoprognathism. (medscape.com)
Lower1
The patient had a straight profile with a tendency to upper and lower lip retrusion. (pocketdentistry.com)
Growth2
The acceleration of mandibular growth that is attained with functional appliances does not have the capability to increase the mandibular length beyond that which is so far genetically determined. (bhmedsoc.com)
Because of our limited ability to influence mandibular growth and the possibility of separating maxillary sutural attachments, treatment has shifted to the maxillary protraction paradigm. (pocketdentistry.com)
Relationship1
A class III dental relationship can exist when the maxillary/mandibular relationship is normal. (aestheticadvantage.com)
Stable1
It offers a titratable, stable and reproducible manoeuvre respecting the patient's mandibular natural movement. (vecmedical.com)
Study1
4°) due to mandibular retrusion and a cervical maturation stage between CS2 and CS3 were included in the study. (unisa.it)
Subjects1
Mandibular retrusion in subjects was corrected by functional appliance therapy. (journalcra.com)
Force1
Action potentials of the masticatory muscles decreased in almost all the muscles and values for the bite force and mandibular opening capacity increased. (minervamedica.it)