A tensor analysis to evaluate the effect of high-pull headgear on Class II malocclusions

Ngan, Peter; Scheick, John; Florman, Michael

doi:10.1016/0889-5406(93)70008-c

Cited by 8 publications

(3 citation statements)

References 19 publications

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“…Downward rotation of the mandible is one of the mechanisms causing anterior open bite and is because of the extruded posterior teeth (1–3) and vertical overgrowth of the maxilla (4–6). To treat one type of mandibular downward rotation, intrusion of the posterior teeth are tried with a high‐pull headgear (7, 8), bite block (9–12) or skeletal anchorage (13–16),while surgical impaction of the maxilla (2, 17–19) is recommended as treatment procedure. As a consequence of these procedures, the mandible performs an upward rotation (autorotation) to close the bite (16, 19).…”

Section: Introductionmentioning

confidence: 99%

Daily chewing gum exercise for stabilizing the vertical occlusion

Masumoto

Yamaguchi

Fujimoto

2009

J of Oral Rehabilitation

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We investigated the effects of a chewing gum exercise program on occlusal conditions and evaluated compliance of subjects. Thirty-five healthy adult volunteers (26 males and nine females) were asked to chew gum for 10-15 min before or after three meals daily for four weeks. Occlusal conditions were recorded as occlusal parameters, such as occlusal contact area, occlusal contact force, and pressure using dental prescale films. These parameters were evaluated by an Occluzer before the exercise period commenced, after four weeks of exercise, and then one month after the end of the exercise period. These parameters were statistically compared using one-way ANOVA. We found that: (i) after four weeks of exercise, anterior and posterior occlusal contact areas and forces were significantly (P < 0.05) increased and the increments were significantly (P < 0.05) higher in the anterior occlusal contact area and force than in the posterior occlusal contact area and force, (ii) the anteroposterior ratio of occlusal contact area and force increased, but not markedly, (iii) increased parameters had significantly (P < 0.05) decreased within one month after the end of the four-week exercise period, (iv) most participants did not complain for discomfort or stress during the exercise. The chewing gum exercise program could increase occlusal contact area and force and also move the anteroposterior occlusal balance forward. Patient compliance with the exercise is likely high enough to keep them exercising.

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Section: Introductionmentioning

confidence: 99%

Daily chewing gum exercise for stabilizing the vertical occlusion

Masumoto

Yamaguchi

Fujimoto

2009

J of Oral Rehabilitation

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“…It is assumed that the growth in the Class II, Division 1 patients would have continued in this way in the absence of therapeutic effects [8,30]. Horizontal orientation of the tensors of maximum growth was much more pronounced than in the controls, in the girls even more so than in the boys.…”

Section: Discussionmentioning

confidence: 99%

“…Das verstärkte Wachstum im Oberkiefer führt bei den untersuchten Klasse-II/1-Patienten zu einer Vorverlagerung des A-Punktes und zum sagittalen Zurückbleiben des B-Punktes, wobei angenommen wird, dass sich das Wachstum der Klasse-II/1-Patienten in Abwesenheit therapeutischer Einflüsse so fortgesetzt hätte [8,30]. Die Tensoren des maximalen Wachstums verlaufen viel horizontaler als bei den Vergleichsgruppen, bei den Mädchen sogar noch stärker als bei den Jungen.…”

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Tensor Analytical Evaluation of the Effects of a Skeletonized Activator in the Treatment of Class II, Division 1 Patients

Eckardt

Gebert²,

Harzer

2001

Journal of Orofacial Orthopedics / Fortschritte der Kieferortho

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Prior to treatment the participants suffering from Class II, Division 1 malocclusion exhibited distinct growth deficits in vertical direction. In the control group, the principal direction of mean growth was found to be anterior-inferior. Under the influence of the activator, growth was found to develop in the same direction as in the controls, so that anterior positioning of the lower jaw and an increase in lower facial height were attained.

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Use of the boundary element method for biological morphometrics

McAlarney

1995

Journal of Biomechanics

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A tensor analysis to evaluate the effect of high-pull headgear on Class II malocclusions

Cited by 8 publications

References 19 publications

Daily chewing gum exercise for stabilizing the vertical occlusion

Daily chewing gum exercise for stabilizing the vertical occlusion

Tensor Analytical Evaluation of the Effects of a Skeletonized Activator in the Treatment of Class II, Division 1 Patients

Use of the boundary element method for biological morphometrics

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