Preventive effect of ozone on the development of white spot lesions during multibracket appliance therapy

OBJECTIVE: To test the null hypotheses: (1) there is no difference in the caries protective effect of ozone and Cervitec/Fluor Protector during multibracket (MB) appliance therapy, and (2) DIAGNOdent and quantitative light-induced fluorescence (QLF) are not superior to a visual evaluation of initial caries lesions. MATERIALS AND METHODS: Twenty right-handed patients with a very poor oral hygiene who required full MB appliance therapy were analyzed during 26 months. In a split-mouth-design, the four quadrants of each patient were either treated with ozone, a combination of Cervitec and Fluor Protector, or served as untreated controls. The visible plaque index (VPI) and white spot formation were analyzed clinically. DIAGNOdent and QLF were used for a quantitative assessment of white spot formation. RESULTS: The average VPI in all four dental arch quadrants amounted to 55.6% and was independent of the preventive measure undertaken. In the quadrants treated with Cervitec/Fluor Protector, only 0.7% of the areas developed new, clinically visible white spots. This was significantly (P < .05) less than in the quadrants treated with ozone (3.2%). The lesions detected with QLF only partially corresponded to the clinically detected white spots, while DIAGNOdent proved to be unable to detect any changes at all. CONCLUSIONS: The caries protective effect of Cervitec/Fluor Protector during MB therapy was superior to ozone, and a visual evaluation of initial caries lesions was superior to both DIAGNOdent and QLF.

Survival of palatal miniscrews used for orthodontic appliance anchorage: a retrospective cohort study

INTRODUCTION The purpose of this study was to examine the overall success of miniscrews inserted in the paramedian palatal region for support of various appliances during orthodontic treatment. METHODS The patients received 1 or 2 miniscrews in the paramedian anterior palate of 8.0-mm length and 1.6-mm diameter placed during orthodontic treatment by the same experienced orthodontist. RESULTS In total, 196 patients (121 girls, 75 boys; median age, 11.7; interquartile range, 3.7) who received 384 miniscrews were evaluated. Two hundred four miniscrews were used with rapid palatal expansion appliances, 136 with appliances for distalization of posterior teeth, and 44 with other appliances, such as transpalatal arches for tooth stabilization. The overall survival of the miniscrews was excellent (97.9%) in the cases examined. Cox regression analysis showed no difference in the overall survival rates of miniscrews loaded with different appliances for sex (hazard ratio, 0.95; 95% confidence interval, 0.71-1.27; P = 0.73) after adjusting for appliance and age. CONCLUSIONS This study shows that miniscrews placed in the paramedian anterior palate for supporting various orthodontic appliances have excellent survival.

Competence-Mapping CDE : Resultate einer Umfrage im Herbst 2009

Anlässlich einer CDE Retraite im Frühjahr 2009 wurde die Frage der Entwicklung von Kompetenzen am CDE diskutiert. Eine Schlussfolgerung war, dass es notwendig sei, eine systematischeren Umgang mit diesem Thema zu entwickeln. Eine Arbeitsgruppe wurde eingesetzt, welche einen Vorschlag erarbeitete, wie ein Kompetenz-Mapping durchgeführt werden sollte. Im Herbst 2009 wurde entsprechend diesem Vorschlag unter den Mitarbeitenden des CDE eine Umfrage zur Erfassung des Ist-Zustandes betreffend Kompetenzen durchgeführt.

Herbst [Illustration]

Isaak Lewitan

Herbst [Illustration]

Isaak Lewitan

Herbst [Illustration]

Isaak Lewitan

Herbst

Theodor Zlocisti

Herbst-Abendstimmung [Illustration]

Samuel Hirszenberg

Morphological Considerations in Lingual Appliance Design: A Descriptive Study

Submitted in partial fulfillment of the requirements for a Certificate in Orthodontics, Dept. of Orthodontics, University of Connecticut Health Center, 1986