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At least 379 records · Page 21Linked to original sources
PubMed1996

The performance of bonded magnets used in the treatment of anterior open bite.

This investigation examined the magnetic flux and repulsive force of neodymium-iron-boron (Nd-Fe-B) magnets based on Nd2Fe14B with acrylic coatings in different orientations. The flux was measured with a Hall probe and the force measured by electronic scales with the magnets mounted on a laboratory jack. Results show that there were no magnetic losses after embedding the magnets in acrylic bite-blocks, although there were significant flux losses when the magnet blocks were directly heated. The alignment of the magnets over each other was of the utmost importance and significantly affected the repulsive force between the magnets. When the magnets were mounted in an articulator to simulate jaw movement, the force levels between the magnets was further reduced as a result of the effects of the rotation of the articulator. It is concluded that Nd-Fe-B type magnets embedded in acrylic can be used to give predictable repulsive forces in the mouth. The dramatic reduction in force levels when the magnets are not in optimal alignment, however, makes their effectiveness in aiding intrusion of teeth doubtful.

Acrylic Resins↗
PubMed1996

The nonsurgical treatment of a Class II open bite malocclusion.

This case was treated by residents in the postgraduate orthodontic program at the University of Florida under the supervision of Dr. Hocevar. A treatment regimen that he developed to increase the strength and endurance of the masticatory muscles was used. The patient performed prescribed daily clenching and chewing exercise with resilient posterior bite-blocks and wore a hard acrylic posterior biteplane the remainder of the time. It was hoped that this approach would increase the chances of treatment success and stability.

Adolescent↗
PubMed1995

Mandibular resorption due to systemic sclerosis. Case report of surgical correction of a secondary open bite deformity.

Systemic sclerosis (SSc) is a connective-tissue disorder of unknown origin causing a multisystem disease. While erosions of the distal phalanges are commonly described, resorption of the mandible has been considered an unusual finding. However, systematic radiographic screening of different groups of patients suffering from SSc revealed a resorption incidence of 20-33% of the examined mandibles. Women especially seem to be affected, and the male/female ratio is 1/7. Bilateral condylysis due to SSc has been described in seven cases, or 13.7% of the reported cases. To the best of our knowledge, this is the fourth report of surgical correction of secondary dysgnathia due to systemic sclerosis and the first with a 2-year follow-up period.

Adult↗
PubMed1985

Orthodontic treatment and tongue surgery in a class III open-bite malocclusion. A case report.

Cases such as this are a real challenge to clinical orthodontists. They require patience as well as proper diagnosis and treatment planning. The orthodontist must also help the patient psychologically by treating the teeth and surrounding structures and by treating the patient as an individual. It is the feeling of both the Author and the Plastic surgeon in this case, Dr. Fernando Ortiz Monasterio, that this type of surgery would be successful in most non-pathological macroglossia cases. It appears that the sutured areas might be said to develop more dense epithelial tissue, not allowing the tongue to expand and readapt so readily to the position of the teeth in the mandibular arch. This is indicated in the present case, as is demonstrated by the decrease in width of the mandibular arch from the first molar area to the anterior part of the mouth. It should be noted that orthognathic surgery was not as widely used at the time that this patient was studied and treated as it is today. If this case had presented for the first time this year, it is likely that the treatment plan of most orthodontists would have combined orthognathic and tongue surgery, with orthodontics to lessen trauma to the supporting structures of the teeth from the extreme and complicated mechanics which would have to be used in treatment. The psychological aspects of this case were of tremendous importance; the treatment results have undoubtedly changed his life completely (Fig. 10). Once unable to speak clearly with his oversize tongue, he has since gone on to complete his education and is now a successful orthodontist.

Adult↗