Results 251 to 260 of about 741,238 (303)

Lip bumper therapy for gaining arch length

American Journal of Orthodontics and Dentofacial Orthopedics, 1991
With the use of pretreatment and posttreatment lateral cephalograms and study models, lip bumper therapy for two groups of 20 patients was evaluated. One group was treated with lip bumpers fabricated from stainless steel round wire covered with shrink tubing and activated every 2 to 3 months.
C T, Nevant, P H, Buschang, R G, Alexander, J M, Steffen   +3 more
openaire   +2 more sources

Effect of molar rotation on arch length

Clinical Orthodontics and Research, 2001
The aim of this study was to evaluate the effect of maxillary first molar rotation on arch length in patients whose Class II, division 1 malocclusion was treated with a straight‐pull headgear. The sample included 19 children who represent a subset of a population enrolled for 2 years in a prospective clinical trial of Class II treatment.
J L, McDonald, F S, Shofer, J, Ghafari
openaire   +2 more sources

The relationship of arch length to alterations in dental arch width

American Journal of Orthodontics and Dentofacial Orthopedics, 2000
An accurate method is presented for forecasting alterations in arch length related to various width increases in each dental arch. It is based on combined beta and hyperbolic cosine functions which express the expanded dental arches with correlation coefficients of r = 0.98, between measured data and representations of the dental arch.
W P, Hnat, S, Braun, A, Chinhara, H L, Legan   +3 more
openaire   +2 more sources

Subapical osteotomy to increase mandibular arch length

American Journal of Orthodontics, 1978
Anterior mandibular subapical osteotomy offers an alternative method of managing selected malocclusions which are associated with minimal to moderate crowding. Persons with a Class II deep bite, dentoalveolar retrusion, normal chin prominence, and deep labiomental fold are potentially good candidates for such treatment.
openaire   +2 more sources

The Influence of Maxillary Incisor Inclination on Arch Length

British Journal of Orthodontics, 1999
This ex vivo study was designed to investigate Andrews' hypothesis that there is a space implication when incisors are torqued correctly. A working model was constructed to allow acrylic typodont incisors of varying known values of inclination to be substituted into the model.
E A, O'Higgins, R H, Kirschen, R T, Lee
openaire   +2 more sources

Integral Arch Bridge of Unlimited Length

2019
When it comes to the construction and maintenance of bridges, integral constructions have many economic advantages. The abutment areas of conventional integral bridges with lengths over 70 m often cause problems due to the length variations caused by temperature changes of the concrete in particular.
Georg Gaßner, Kerstin Fuchs, Johann Kollegger   +2 more
openaire   +1 more source

Functional maintenance of arch-length.

ASDC journal of dentistry for children, 1984
This article discussed on overall concept of the etiology of arch-length loss, general indications and contraindications for Functional Space Maintenance and described in detail the methods for constructing a Fixed Functional Space Maintainer utilizing stainless steel crowns for abutments and pontics.
N P, Martinez, H G, Elsbach
openaire   +1 more source

Effects of muscular anchorage appliances on deficient mandibular arch length

American Journal of Orthodontics, 1971
Abstract Four cases have been reported to illustrate the change in arch length and the improvement in arch form that can be achieved with the use of a mandibular muscle anchorage appliance (lip bumper). In selected patients with crowded lower arches, the use of such an appliance, properly timed and in conjunction with an accurate diagnosis and ...
A H, Sather, S B, Mayfield, D H, Nelson
openaire   +2 more sources

The effect of maxillary first molar derotation on arch length

American Journal of Orthodontics and Dentofacial Orthopedics, 1997
In the correction of Class II malocclusions, derotation of the maxillary first molars is required to obtain an idealized Class I relation. Because of its trapezoidal shape, the maxillary first molar is believed to provide an arch length gain attendant to its derotation, which may subsequently be used to resolve deficiencies mesial to it.
S, Braun, B, Kusnoto, C A, Evans
openaire   +2 more sources

Effect of maxillary incisor angulation and inclination on arch length

American Journal of Orthodontics and Dentofacial Orthopedics, 1987
This article discusses the quantitative effects of angulation of incisors on dental arch length. The incisors are approximated mathematically to rectangular shapes, which enables the authors to calculate the change in arch length when teeth are tipped and to describe graphically the effect of other influencing parameters.
W, Hussels, R S, Nanda
openaire   +2 more sources