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Biomedical subjects

L C Fish

Publications and source records attributed to L C Fish.

26 records · Page 2Linked to original sources
PubMed1980

Surgical superior repositioning of the maxilla: what to do with the mandible?

During superior repositioning of the maxilla (SRM), the mandible autorotates forward and upward at pogonion, with the condyle as the center of rotation. Thus, in each instance when planning surgical superior repositioning of the maxilla one must decide, on the basis of esthetics and cephalometric prediction criteria, the magnitude of autorotation and the contribution of this rotation toward the desired occlusal and esthetic result. In many instances the maxilla can be moved somewhat posteriorly or anteriorly, and thus simultaneous mandibular surgery is not required to achieve the desired result. In some cases, however, simultaneous mandibular advancement or set-back is required to achieve the desired occlusal and esthetic result. This article discusses the specifics of making the decision regarding what to do with the mandible when superiorly repositioning the maxilla.

Adolescent↗
PubMed1978

Surgical-orthodontic correction of vertical maxillary excess.

Superior repositioning of the maxilla via maxillary ostectomy has proved to be useful method of treating patients with vertical maxillary excess. It is indicated primarily in patients with lip incompetence, excessive exposure of maxillary anterior teeth, long lower facial height, contour-deficient chin, and either Class I or Class II malocclusion. We have used this procedure as routine treatment for vertical maxillary excess over the past 5 years. Timing of the surgery is not so important in non-open-bite patients, and the procedure can be done with equal success before any orthodontic intervention, during orthodontic treatment, and following all orthodontic procedures. Timing is primarily dependent upon the orthodontist's desires. Since the surgery can produce a much simpler orthodontic problem, thus reducing treatment time and allowing a better over-all result, we recommend that it be done as early in treatment as possible. Clinically, the over-all improvement in facial appearance and the predictability and stability of the results have made this a most versatile and effective procedure when carried out with good planning, proper execution and attention to detail.

Adolescent↗
PubMed1978

The surgical-orthodontic correction of maxillary deficiency.

To date surgeons have primarily emphasized advancement of the retrusive or retodisplaced maxilla. There has been no emphasis on combined surgical-orthodontic treatment sequencing in this deformity. Moreover, the maxilla may be deficient not only anteroposteriorly but also vertically and/or transversely. Frequently, when the maxilla is deficient, two or three of these spatial components of the deformities coexist to various degrees. Thus, the term maxillary deficiency is used here to describe the general nature of the skeletal deformity.

Adolescent↗
PubMed1978

Mandibular deficiency syndrome. I. Clinical delineation and therapeutic significance.

The mandibular deficiency syndrome is a constellation of abnormalities, including a spectrum of skeletal, neuromuscular, occlusal, and esthetic conditions. The extremes of this syndrome exhibit different skeletal and esthetic morphology and growth patterns. Different orthodontic and surgical approaches must be considered for optimal functional and esthetic correction in the three different facial types. Differentiation between cases with low, medium, and high mandibular plane angles and knowledge of the growth tendencies will permit different surgical and orthodontic considerations for each of the three basic morphologic types. Predictable functional and esthetic results can then be expected.

Adolescent↗
PubMed1978

Mandibular deficiency syndrome. II. Surgical considerations for mandibular advancement.

Eight factors which contribute to the successful surgical correction of the deficient mandible have been briefly discussed. Consideration of the recommendations made will permit surgeons to avoid pitfalls, regardless of the specific surgical technique used to advance the mandible, and will result in improved treatment results. The type of mandibular deficiency syndrome and its severity will dictate which factors need to be considered in a given case. A modified sagittal osteotomy is described as our preferred surgical technique to achieve these objectives and minimize untoward sequelae.

Child↗