Thesis (M.Sc.D.)--Boston University School of Graduate Dentistry, 1972. (Orthodontics) / Bibliography included. / The present study was undertaken to document the incidecnce of the relapse phenomena taking place up to two years after completion of active orthodontic therapy. This paper was limited specifically to the post treatment changes of the mandibular plane. The study was carried out on the records of thirty-six patients treated in the orthodontic clinic at Boston University School of Graduate Dentistry. Original, final, and two year post treatment cephalograms, pano-graphs, and study models were evaluated and compared for each patient. Observations of the compiled data revealed that twelve of the thirty-six patients showed a decrease in the mandibular plane angle during treatment, while ten patients showed an increase. Further analysis of the results revealed that the majority (70%) of the patients with the increased mandibular plane angle showed a decrease during the retention period, reverting back to or toward pretreatment values. Of the twelve patients experiencing a decrease during treatment, the post treatment results were more varied, and no definite trends could be observed. Further study is needed to determine if an increase in the mandibular plane angle during orthodontic treatment is nonphysiologic and, therefore, more susceptible to relapse.
| Identifer | oai:union.ndltd.org:bu.edu/oai:open.bu.edu:2144/29789 |
| Date | January 1972 |
| Creators | Fischer, Craig W. |
| Publisher | Boston University |
| Source Sets | Boston University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
| Rights | This work is being made available in OpenBU by permission of its author, and is available for research purposes only. All rights are reserved to the author. |
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