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At least 793 records · Page 44Linked to original sources
PubMed2006

Determining the limits of orthodontic treatment of overbite, overjet, and transverse discrepancy: a pilot study.

INTRODUCTION: Because of the severity of some malocclusions, it is not always possible to treat them without a combination of orthodontics and orthognathic surgery. However, many insurance carriers have difficulty in deciding whether such treatment should be covered. The purpose of this study was to develop a simple method that can be used by insurance carriers to determine when a malocclusion is not correctable by orthodontics alone. METHODS: Twenty-eight orthodontists independently evaluated 30 sets of pretreatment dental models (10 with overjet from -6 to 12 mm, 10 with overbite from 60% to 100%, and 10 with transverse discrepancies from single tooth to total arch crossbite) to determine whether the conditions were orthodontically treatable. They were instructed to assume that growth was complete and that the treatment would not seriously compromise facial esthetics. RESULTS: It was the opinion of the orthodontists that a positive overjet greater than 8 mm, a negative overjet of -4 mm or greater, and a transverse discrepancy greater than 3 mm were not orthodontically treatable. However, most orthodontists believed that they could treat all overbite patients without surgery. CONCLUSIONS: These data can serve as a simple guideline for helping insurance carriers determine the need for orthognathic surgery.

Feasibility Studies↗
PubMed1991

The efficacy of two-stage titanium implants as orthodontic anchorage in the preprosthodontic correction of third molars in adults--a report of three cases.

Orthodontic movement of teeth is often required to satisfactorily treat a variety of oral rehabilitation problems. Considerable limitations in the clinical application of orthodontic treatment may result from the lack of teeth suitable for anchorage. Three patients with edentulous posterior segments are presented illustrating how implants can be utilized for preprosthodontic correction of impacted third molars rendering them suitable as bridge abutments. The patients have been followed for 8-10 years. Two-stage titanium implants were used as orthodontic anchorage as no dental anchorage was available. Edgewise orthodontic mechanics were used to move the third molars mesially with forces up to 2.5 N (about 250 g). No movement of the implants occurred and they were radiologically and clinically intact at the end of the orthodontic loading and were, therefore, subsequently used as bridge abutments.

Adolescent↗
PubMedDate not supplied

Early orthopedic treatment for Class III skeletal pattern.

An eight-year-old female, Class III due to maxillary retrusion with brachyfacial growth pattern was treated with a functional regulator appliance (FR-3). By initiating treatment at an early age, developing skeletal imbalances were corrected. At postretention six years she had balanced profile and stable functional occlusion.

Cephalometry↗
PubMed1995

An evaluation of mandibular asymmetry in adults with unilateral posterior crossbite.

A retrospective study was conducted to determine whether mandibular symmetry in adults with untreated unilateral posterior crossbite was different from that found in adults with untreated Class I malocclusions. Thirty adults, 18 years or older, with a unilateral posterior crossbite were compared with 30 adults exhibiting Angle Class I malocclusions. Skeletal and dental symmetry were assessed with submentovertex (SMV) radiographs, whereas condylar position within the glenoid fossa was analyzed with horizontally corrected tomograms. Relative to a mandibular coordinate system, the mandibular first molar on the crossbite side was found to be more lateral and relatively distal in comparison to the contralateral side. Skeletally, the mandible showed no asymmetry. Relative to the cranial floor, the mandible was "rotated" so that the condyle on the crossbite side was positioned relatively posteriorly in comparison to the contralateral side. A relative posterior positioning of the glenoid fossa was inferred, since there was no demonstrable mandibular skeletal asymmetry or condylar displacement within the fossa as shown on corrected tomograms in the crossbite group as compared with the Class I group. The results question whether it is appropriate to correct unilateral posterior crossbites in adults by orthodontic tooth movement alone, given the skeletal remodeling in the temporomandibular joint, which may have already occurred.

Adolescent↗
PubMed1975

[Dentofacial orthopedics and orthopedic surgery].

The authors describe five cases of surgical correction of dysmorphisms of the maxillaries requiring orthodontic treatment before surgery. Pre-operative orthodontic treatment of the adult has the advantage of enabling the arches to be aligned, facilitating the operation when the osteotomized fragments are positioned and resulting in immobilisation in a good position.

Adolescent↗
PubMed1989

[Secondary prevention of mesial bite in infants with maxillary clefts by correcting early deciduous prenormal incisors].

A new application of the inclined plane principle for the management of mesial bite in a child aged 14 months is reported. It was of interest to note that, inspite of the presence of Robin's sequence associated with cleft palate and postnormal mandible and inspite of posteriorly directed stresses on the mandible generated by sucking, the deciduous incisors were prenormal at the very time of their eruption. In light of the growth arresting effect of palatal clefts the authors emphasize the importance of regular orthodontic care in cleft patients beyond early orthodontic treatment throughout dental development in order to prevent the occurrence of developmental anomalies.

Cleft Palate↗