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Skeletal and dental response to Herbst appliance therapy
80
Reviews
und
abstracts
Class I groups have straighter noses. Anterior nasal spine in the skeletal Class II group is much larger, compared to the other two groups, making the nasolabial angle more obtuse. The total length of the maxilla is significantly larger in the skeletal Class II group, when compared to the Class I group. Male noses are larger in length and depth than female noses, but the trend is the same in all groups. T. M. Gruber
Steiner Cephalometric the Chinese Steven Washington
Standards
for Chronic Electrode Placement in the Study of the Lateral Pterygoid Muscle
Jung Universit.v,
St. Louis.
Missouri,
1981
This investigation employed the Steiner cephalometric analysis for twenty-seven subjects of pure Chinese ancestry, with a mean age of 13% years, who had clinically acceptable occlusions. The fifteen variables of the Steiner analysis were measured, recorded, and statistically assessed. Standards were developed for the group. Comparing Chinese with Caucasian standards, it is noted that the Chinese exhibit a relatively more prognathic lower face-maxilla and mandible-with a pronounced labioversion of upper and lower incisors and a Class II tendency. The mandibular length was found to be longer, but inclination of mandibular and occlusal planes to cranial base was comparable for Chinese and Caucasian. A larger Holdaway ratio was observed, but this was thought to be normal for the harmonious, balanced Chinese facial pattern. The thesis emphasized that new norms must be used in any diagnostic and clinical study for Chinese patients.
Skeletal and Dental Response Appliance Therapy W. R. Mercer Faculty of Dentistry, Canuda,
University
2. The forward growth of the maxilla was significantly reduced. 3. The convexity of the skeletal facial profile was significantly reduced. 4. There was a significant inhibition of normal buccal segment eruption. 5. Normal temporomandibular joint relationships were achieved in three cases at the end of the treatment. 6. Mandibular growth direction at pogonion was influenced in all cases.
cf Toronto,
to Herbst
S. C. Gruza of Dentistry,
Fuculty Canada.
Ontario,
1981
This study was carried out in order to investigate the effects of a modified Herbst appliance on dentofacial growth. The experimental group consisted of six adolescent patients with Class II, Division 1 malocclusions. Cephalometric radiographs, temporomandibular radiographs, photographs, and dental casts were taken both before and after treatment for analysis. The following results were obtained: 1. A significant increase in mandibular growth was measured on both lateral cephalograms and 45 degree oblique cephalograms.
of Toronto,
Toronto.
Ontwio,
An EMG technique for chronically recording simultaneously from both heads of the lateral pterygoid muscle in the macaque monkey was developed in two juvenile monkeys (Mucacafusciculuris). The fine-wire EMG electrode longevity was found to be at least 12 weeks, providing accurate EMG recordings throughout that length of time. Electromyographic activity within the two heads of the lateral pterygoid muscle was related to vertical jaw position. It was found that, although the superior and inferior heads of the lateral pterygoid muscle functioned both during jaw-opening and jaw-closing movements, many instances were observed in which the superior head acted only during jaw-closing movements while the inferior head acted only during jaw-opening movements, indicating functional independence.
An Evaluation and Treatment Planning Technique for Surgical Orthodontic Cases T. Ft. McIntyre Fuculty of Dentistry,
Toronto,
Univrrsity
1981
Canada.
Univer.sity
of
Toronto,
Toronto.
Ontario,
1981
With the ability to alter skeletal relationships, soft-tissue changes subsequent to surgical procedures play an important role in both the initial assessment and the proposed treatment of such a case. These three major factors illustrate the need for a diagnostic and treatment-planning protpcol specific to combined surgical orthodontic treatments. A clinical facial evaluation and a cephalometric evaluation utilizing the Burlington horizontal-vertical template were presented to provide the basic diagnostic data. The logical progression to the accumulation of diagnostic data, to a diagnosis, to a list of treatment
Reviews
und
abstracts
Class I groups have straighter noses. Anterior nasal spine in the skeletal Class II group is much larger, compared to the other two groups, making the nasolabial angle more obtuse. The total length of the maxilla is significantly larger in the skeletal Class II group, when compared to the Class I group. Male noses are larger in length and depth than female noses, but the trend is the same in all groups. T. M. Gruber
Steiner Cephalometric the Chinese Steven Washington
Standards
for Chronic Electrode Placement in the Study of the Lateral Pterygoid Muscle
Jung Universit.v,
St. Louis.
Missouri,
1981
This investigation employed the Steiner cephalometric analysis for twenty-seven subjects of pure Chinese ancestry, with a mean age of 13% years, who had clinically acceptable occlusions. The fifteen variables of the Steiner analysis were measured, recorded, and statistically assessed. Standards were developed for the group. Comparing Chinese with Caucasian standards, it is noted that the Chinese exhibit a relatively more prognathic lower face-maxilla and mandible-with a pronounced labioversion of upper and lower incisors and a Class II tendency. The mandibular length was found to be longer, but inclination of mandibular and occlusal planes to cranial base was comparable for Chinese and Caucasian. A larger Holdaway ratio was observed, but this was thought to be normal for the harmonious, balanced Chinese facial pattern. The thesis emphasized that new norms must be used in any diagnostic and clinical study for Chinese patients.
Skeletal and Dental Response Appliance Therapy W. R. Mercer Faculty of Dentistry, Canuda,
University
2. The forward growth of the maxilla was significantly reduced. 3. The convexity of the skeletal facial profile was significantly reduced. 4. There was a significant inhibition of normal buccal segment eruption. 5. Normal temporomandibular joint relationships were achieved in three cases at the end of the treatment. 6. Mandibular growth direction at pogonion was influenced in all cases.
cf Toronto,
to Herbst
S. C. Gruza of Dentistry,
Fuculty Canada.
Ontario,
1981
This study was carried out in order to investigate the effects of a modified Herbst appliance on dentofacial growth. The experimental group consisted of six adolescent patients with Class II, Division 1 malocclusions. Cephalometric radiographs, temporomandibular radiographs, photographs, and dental casts were taken both before and after treatment for analysis. The following results were obtained: 1. A significant increase in mandibular growth was measured on both lateral cephalograms and 45 degree oblique cephalograms.
of Toronto,
Toronto.
Ontwio,
An EMG technique for chronically recording simultaneously from both heads of the lateral pterygoid muscle in the macaque monkey was developed in two juvenile monkeys (Mucacafusciculuris). The fine-wire EMG electrode longevity was found to be at least 12 weeks, providing accurate EMG recordings throughout that length of time. Electromyographic activity within the two heads of the lateral pterygoid muscle was related to vertical jaw position. It was found that, although the superior and inferior heads of the lateral pterygoid muscle functioned both during jaw-opening and jaw-closing movements, many instances were observed in which the superior head acted only during jaw-closing movements while the inferior head acted only during jaw-opening movements, indicating functional independence.
An Evaluation and Treatment Planning Technique for Surgical Orthodontic Cases T. Ft. McIntyre Fuculty of Dentistry,
Toronto,
Univrrsity
1981
Canada.
Univer.sity
of
Toronto,
Toronto.
Ontario,
1981
With the ability to alter skeletal relationships, soft-tissue changes subsequent to surgical procedures play an important role in both the initial assessment and the proposed treatment of such a case. These three major factors illustrate the need for a diagnostic and treatment-planning protpcol specific to combined surgical orthodontic treatments. A clinical facial evaluation and a cephalometric evaluation utilizing the Burlington horizontal-vertical template were presented to provide the basic diagnostic data. The logical progression to the accumulation of diagnostic data, to a diagnosis, to a list of treatment