Cephalometric Appraisal Research Articles

Overbite changes in the Begg and edgewise techniques

A radiographic cephalometric appraisal was made of certain tooth movements occurring in the treatment of deep-overbite cases utilizing the Begg and edgwise techniques. Emphasis was placed upon those tooth movements which appear to affect overbite correction. The four teeth selected for this investigation were the maxillary central incisor, the maxillary first molar, the mandibular central incisor, and the mandibular first molar. Standard planes of reference were constructed from which measurements of angular and linear tooth changes were made. In addition, superimposition was made upon the anterior cranial fossa to observe changes due to general facial growth, intramaxillary and intramandibular growth, and orthodontic treatment.

A cephalometric appraisal of mandibular growth related to cranial base morphology

A cephalometric appraisal of mandibular growth related to cranial base morphology

A cephalometric appraisal of changes in the maxillofacial complex resulting from palatal suture expansion utilizing fixed appliance therapy

This retrospective study evaluated the nasolabial changes in patients who underwent surgically assisted rapid maxillary expansion (SARME) using two different approaches. Nineteen patients were included in the study, divided into two groups according to the kind of surgical approach performed: group 1 (n = 9), SARME performed through the standard Le Fort I circumvestibular approach followed by the alar base cinch, and group 2 (n = 10), SARME performed through a subtotal vestibular approach associated to a V-shaped incision at the maxillary midline in the labial frenulum region, without alar base cinch. Measurements of width, length, and nasal projection as well as upper lip length were taken from cone beam tomographic images obtained before surgery (T1) and 6 months postoperatively (T2). Both groups presented an increase in the alar base width postoperatively (P < 0.05). The approach used in group 2 resulted in smaller changes in the alar base width as measured at the superior alar curvature (P < 0.05). Nasal length and projection and upper lip length were not altered by SARME. The type of surgical approach influenced nasolabial changes, but did not eliminate increase in width of the alar base.

A cephalometric appraisal of the Chinese (Cantonese)

1. 1. Lateral cephalometric x-ray films of thirty normal Chinese (Cantonese) male adults were analyzed. 2. 2. The sample was selected from more than 300 adult Chinese in Hong Kong. 3. 3. The criteria for selection were Cantonese males between 18 to 33 years, with clinically excellent occlusion, pleasing or acceptable profile, and no previous orthodontic treatment. 4. 4. Part 1 of the investigation used the Downs' analysis. 6 Results confirmed Wong's 4 findings that the Chinese present a Class II facial pattern when compared to Caucasian standards. Statistical tests for significance of difference between means of the two samples compared were carried out. All measurements, except the A-B plane, were found to be significantly different (P < 0.001) from the Caucasian standards. 5. 5. Part 2 of the investigation used a modified Alabama analysis. 10 Standards for Chinese were established, and the results were also tested statistically. 6. 6. Part 3 of the investigation was on the soft-tissue profile. The Chinese lips were found to be protrusive in relation to the esthetic plane and the subnasale-pogonion plane.

A radiographic cephalometric appraisal of the proportional relationship of the molar and incisor heights in hypodivergent, hyperdivergent, and normal patients

A radiographic cephalometric appraisal of the proportional relationship of the molar and incisor heights in hypodivergent, hyperdivergent, and normal patients

A roentgenographic cephalometric appraisal of the tooth movements contributing to overbite correction in treatments utilizing an anterior high-pull headgear

A roentgenographic cephalometric appraisal of the tooth movements contributing to overbite correction in treatments utilizing an anterior high-pull headgear

A cephalometric appraisal of maxillary development related to cranial base morphology

A cephalometric appraisal of maxillary development related to cranial base morphology

A Cephalometric Appraisal of Overbite Correction

A Cephalometric Appraisal of Overbite Correction

Anchorage variation with the light-wire technique

1. 1. A cephalometric appraisal has been presented of various anchorage changes resulting from the use of the Begg light-wire technique. 2. 2. Routine treatment results do not lend support to the opinion that it is customary for bite opening to be dependent upon rapid elevation of anchor molar teeth into the freeway space. 3. 3. Initial bite opening and subsequent posttreatment closure of the FMA is not necessarily a constant treatment phenomenon. 4. 4. With the Begg technique, extensive modifications to the mandibular occlusal curve can be maintained following active treatment.

Canine retraction

Distal wires are formed on the plaster casts so that the free ends rest on the buccal tubes of the banded maxillary permanent first molars. This greatly increases the stability of the removable appliance in the mouth. Wires are also bent to contact the mesial surfaces of the premolars to prevent them from drifting mesially when first premolars have been extracted in either the maxillary or the mandibular arch. Springs move the canines distally into the extraction areas in either one or both arches, as has been described. They may be moved entirely back to the second premolars in some cases or only part of the way back, depending upon the cephalometric appraisal and the operator's judgment. This, then, leaves the four incisors as an island to be moved back as a unit after bands and appliances have been placed on the teeth. Each maxillary removable appliance generally has a flat bite plane or ridge for the lower incisors to occlude against. The springs on the mandibular removable appliance may be formed in the same manner as on the maxillary appliance, and mandibular appliances must have occlusal rests on the permanent first molars. At times in either the maxillary or mandibular appliance it may be necessary to have only unilateral springs. Patients almost always apply extraoral traction during this phase of treatment. These appliances are never referred to as “bite plates” to the patients but, rather, as removable appliances, since that is what they are—tooth-moving appliances.

A roentgenographic cephalometric appraisal of the tooth movements contributing to overbite change in the Begg and edgewise techniques

A roentgenographic cephalometric appraisal of the tooth movements contributing to overbite change in the Begg and edgewise techniques

A cephalometric appraisal of the constancy of facial growth along the Y axis: By G. Russell Frankel, Washington University School of Dentistry, St. Louis, Mo.

A cephalometric appraisal of the constancy of facial growth along the Y axis: By G. Russell Frankel, Washington University School of Dentistry, St. Louis, Mo.

A roentgenographic cephalometric appraisal of girls at menarche: By Arnold G. Greene

A roentgenographic cephalometric appraisal of girls at menarche: By Arnold G. Greene

A cephalometric appraisal of mandibular molar movement: By Charles J. Vieth, St. Louis University, St. Louis, Mo.

A cephalometric appraisal of mandibular molar movement: By Charles J. Vieth, St. Louis University, St. Louis, Mo.

Cephalometric Appraisal Of The Open-bite Case

Abstract No Abstract Available. Read before the Midwestern Component of the Angle Society, New Orleans, January, 1963.

A cephalometric appraisal of hard and soft tissue changes in Class II, Division 1 (angle) malocclusions following orthodontic therapy: By Raymond T. Matsunaga, Tufts University School of Dental Medicine, Department of Graduate Orthodontics, Boston, Mass.

A cephalometric appraisal of hard and soft tissue changes in Class II, Division 1 (angle) malocclusions following orthodontic therapy: By Raymond T. Matsunaga, Tufts University School of Dental Medicine, Department of Graduate Orthodontics, Boston, Mass.

A myometric and cephalometric appraisal of the tongue: By John C. Gorman, Washington University, St. Louis, Mo.

A myometric and cephalometric appraisal of the tongue: By John C. Gorman, Washington University, St. Louis, Mo.

A cephalometric appraisal of cranial and facial relationships at various stages of human fetal development

A cephalometric appraisal of cranial and facial relationships at various stages of human fetal development

A cephalometric appraisal of cranial and facial relationships at various stages of human fetal development: By Jorge C. Mestre, Jr., D.D.S., Eastman Dental Dispensary, Rochester, New York

A cephalometric appraisal of cranial and facial relationships at various stages of human fetal development: By Jorge C. Mestre, Jr., D.D.S., Eastman Dental Dispensary, Rochester, New York

The lingual arch as a source of anchorage in Class II treatment: A cephalometric appraisal of forty treated cases

A cephalometric and clinical appraisal of forty treated Class II (Angle) malocclusion cases selected from my private practice has been presented. In all of these cases the maxillomandibular relationship was corrected by the use of intermaxillary elastics, using the mandibular removable lingual arch as the source of anchorage. No extractions were performed and headcaps were not used either directly to the maxillary arch or in reinforcement of the mandibular anchorage. The following methods were employed to determine tooth movement that may have occurred in the mandibular arch as a result of the use of intermaxillary elastics: 1. 1. The angulation of the lower incisors to the lower border of the mandible was recorded on the pretreatment and posttreatment cephalometric roentgenograms to determine the extent of tipping that may have resulted. 2. 2. The measurement (in millimeters) of the labial incisal tip of the lower incisors to the nasion-pogonion reference line was recorded on the pre- and postcephalometric roentgenograms to determine the extent of forward movement of the incisors on the mandibular base. 3. 3. Tracings of the pretreatment and posttreatment cephalometric roentgenograms were made in each case by superimposing mandible on mandible, using pogonion and the lower border of the mandible as the fixed areas. The extent of forward movement of the mandibular incisors was measured in millimeters. 4. 4. A clinical study was also performed on the pre- and posttreatment mandibular models to measure expansion of the intercuspid width and changes in arch length of the premolar area.