Reviews and abstracts
Thesis abstracts Temporomandibular Joint: MRI Findings Related to Success and Failure of Disc Surgery J.M. Cohen, P-L Westesson, and R.H. Tallents Rochester, N.Y.: Eastman Dental Center and University of Rochester, 1990
by posterior clefts, with noncleft patients having the smallest tongues. A significant sex-linked effect was noted.
Correction of Open Bite Malocclusions Using Multiloop Edgewise Archwires: A Cephalometric Evaluation G.A. Nalchajian Rochester, N.Y.: Eastman Dental Center, 1990
Posttreatment images of 30 operated joints were studied in 21 patients to gain information about the significance of imaging findings relative to the clinical symptom of pain after surgical treatment. Twenty-three joints were treated with surgical disk repositioning and 7 joints with discectomy. Twenty joints were imaged after surgery because of recurrence of pain in the operated joint, and 10 joints were imaged beause of pain in the contralateral joint. Low signal intensity tissue interpreted as fibrous tissue was observed in the joint capsule and/or in the joint space in 13 of the 20 painful joints and in 3 of the 10 nonpainful joints. Fibrous tissue was more extensive in the painful joints than in nonpainful joints. The disk was found to be displaced in 11 of the 23 joints that had surgical disk repositioning. Recurrence of disk displacement was seen in both painful (9 of 17 joints) and nonpainful joints (2 of 6 joints). This study suggests that extensive fibrous tissue in the joint capsule and in the joint space was associated with recurrence of pain after disk surgery.
Proportionality of the Cross-Sectional Areas of the Maxillae and Tongues of Normal and Cleft Palate Patients Under Three and One Half Years of Age R.G. Keim Rochester, N.Y.: Eastman Dental Center, 1990
This study was designed to compare the cross-sectional areas of the tongue and maxillae of palatally normal and cleft palate patients. By measuring frontal laminagraphs taken through the maxillary tuberosities through manual planimetry, the means for the crosssectional areas of the cleft side maxilla, noncleft side maxilla, normal maxillae, and tongue were generated. The sample consisted of 39 normal patients, 22 posterior clefts and 18 unilateral clefts of the lip, palate and alveolar process. All patients in the current sample were under 31/2 years old. No significant differences were found between cleft side maxillae, maxillae on the side opposite the cleft, right and left posterior cleft maxillae, and total maxillary areas of each group. Unilateral cleft patients had the largest tongues, followed
This study was designed to evaluate the effect of treatment with the Multiloop Edgewise Arch Wire (MEAW) technique in 24 patients with anterior open bite malocclusions. Eight adult and 16 adolescent patients were evaluated before, immediately after, and 2 years posttreatment for 48 skeletal and dental measurements to characterize the nature of the changes that had taken place. Treatment brought about few significant skeletal changes, but several significant dental changes. Both upper and lower teeth showed significant tipback and overbite increased to positive overlap in all patients after treatment. Incisors erupted moderately, whereas molars either maintained their positions or intrnded relative to their bases. Most changes tended to relapse somewhat after treatment but remained significantly changed two years after discontinuation of treatment.
Maturational Evaluation of Fusion of the Mid-Palatal Suture B. Revelo Rochester, N.Y.: Eastman Dental Center, 1990
The study was designed to determine whether a correlation exists between skeletal maturation and closure or fusion of the midpalatal suture. Thirty-nine male patients and 45 female patients from the Orthodontic Department were studied. An occlusal radiograph of the upper jaw and a left hand-wrist radiograph were taken on one occasion for each patient. Measurements of length and associated percentage of fusion were recorded for the total and partial anteriorposterior dimensions of midpalatal suture. Fishman's Skeletal Maturation Indicators (SMI's) were used to establish maturational age. There is a statistically significant correlation between maturational development and initiation and progression of fusion of the midpalatal suture. No significant sex difference was found in the patterns of fusion. Fusion begins in the posterior with 50% closure at the termination of adolescence at SMI II. On basis of these results, midpalatal expansion