Date of Graduation

2004

Document Type

Thesis

Degree Type

MS

Committee Chair

John Thomas

Abstract

Hypothesis: There is no statistically significant difference between counts of Porphyromonas gingivalis, Treponema denticola, and Bacteroides forsythus, organism morphotypes, and probing depths and plaque scores in orthodontic patients with poor oral hygiene. Thirteen patients were included in the study. Before orthodontic appliances were placed (as baseline) and for four months a BANA test, plaque score, probing depths, and microscopy analysis were performed. Data were analyzed with ANOVA and Tukey HSD. Significant differences were found among patients for the BANA and plaque score. Significant differences were found among visits for the BANA, plaque score, and probing depth. There was an increase in plaque score, probing depth, BANA scores, small spirochetes, large spirochetes, non-motile rods, fusiforms, and filaments. For the subsequent visits results suggest that patients undergoing orthodontic therapy have an increase in plaque accumulation, probing depth, and microbial activity that may be associated with periodontal destruction.

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