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A Comparison Of Overbite Relapse To Age, Interincisal Angle And Lower Face Height In Class Ii Deepbite Cases, James E. Macalpine

Loma Linda University Electronic Theses, Dissertations & Projects

Patients with deep skeletal or dental bites before treatment have been noted to have a greater tendency towards relapsing to this deepbite following orthodontic treatment than do patients whose malocclusion showed a more ideal overbite relationship before treatment.

This study utilized patients selected from Rocky Mountain Data Systems for their deepbite trends. Three areas were compared to overbite relapse, 1) age, 2) interincisal angle 3) lower face height.

Results of this study indicate that overbite cases that have the most problems in retention were skeletal deepbites. This study also indicates that there was no disadvantage to early treatment, that the …

Evaluation Of A Precision Filing Test For Predicting Dental Technic Performance, Douglass Roberts

Loma Linda University Electronic Theses, Dissertations & Projects

A precision filing test involving the reduction of a steel cylinder to a perfect cube with the use of a hand file and bench vise was devised as a diagnostic tool for the early detection of freshman students having technic difficulties. The test was administered to 188 freshman dental students in three classes at Loma Linda University, School of Dentistry. Subjective and objective scores were then statistically compared with subsequent technic and clinic grades of the students. The simple linear correlations between the predictor test variable and criterion grades were statistically significant for one class and for the combined classes …

The Prediction Of Circumferential Tooth Measurements As An Aid In Orthodontic Banding, Roland D. W. Neufeld

Loma Linda University Electronic Theses, Dissertations & Projects

A correlation was established among the circumferential measurements of the teeth in a given individual. The maxillary central incisor was selected as the predictor tooth to predict the remaining teeth in the set. The circumferences of the teeth were predicted within + two band sizes 69% of the time. Agreement in prediction percentages was found using measurements taken intraorally.

Growth Augmentation With Activators, John R. Sibley

Loma Linda University Electronic Theses, Dissertations & Projects

This research was performed to determine if bony changes could be effected by activator treatment and how stable this treatment is.

From a sample of twenty-seven cases with before activator treatment cephalometric radiographs. Rocky Mountain Data Systems provided growth projections, with and without edgewise treatment, for the period of time each patient was in treatment. These forecasts were compared to the post-treatment cephalograms to analyze the orthopedic effects of activator treatment with normal growth and with edgewise therapy.

Nine of the twenty-seven case treated sample responded to recall for post-treatment cephalograms and were analyzed for relapse.

It was apparent that …