Dentale Anomalien bei palatinaler Eckzahnverlagerung unter besonderer Berücksichtigung der Zahnbreiten im Oberkiefer

Fäßler, Hannelore (2006): Dentale Anomalien bei palatinaler Eckzahnverlagerung unter besonderer Berücksichtigung der Zahnbreiten im Oberkiefer. Dissertation, LMU München: Faculty of Medicine

Abstract

AIM: The aim of this retrospective trial was to investigate differences in mesiodistal and vestibulo-oral crown sizes of naturally, fully-erupted permanent maxillary teeth between patients with and without palatal canine displacement. PATIENTS AND METHOD: 115 patients (mean age: 14 years 10 months; females: 77 males: 38) treated in the Department of Orthodontics, University of Munich were included in the study. 65 of the patients showed at least one palatally-displaced canine. Diagnosis and the location of the displacement were determined on the basis of standardized radiographs and confirmed by surgical documentation. Each maxillary tooth's mesiodistal and vestibulo-oral width was measured using a dial caliper on each dental cast. Excluded were partially-erupted teeth and surfaces with caries or restorations that had to be measured. An analysis of available space was made by evaluating the pre-treatment dental casts of all patients included in the study. RESULTS: Comparing the tooth widths of patients with unilateral canine displacement with the corresponding contralateral quadrants, we noted a statistically significant difference, namely that the central and lateral incisors and the canines of the affected side were narrower than those of the non-affected side in the same patient. Moreover, the displaced upper canines showed an increase in vestibulo-oral dimension. Overall tooth width (including all tooth groups) in patients with palatally-displaced canines was significantly less than that in the control group. However, when comparing the crown diameters of unilaterally- and bilaterally-affected patients, no differences in tooth-size were observed. The space-analysis showed excessive dental-arch space in patients with a palatally-displaced canine. CONCLUSION: Patients affected by palatal canine displacement showed significantly smaller maxillary tooth size.

• Item Type: Theses (Dissertation, LMU Munich)
• Keywords: Eckzahn, Verlagerung, Zahnbreiten, Oberkiefer, palatinal
• Subjects: 600 Technology, Medicine > 610 Medical sciences and medicine; 600 Technology, Medicine
• Faculties: Faculty of Medicine
• Language: German
• Date of oral examination: 9. January 2006
• 1. Referee: Rudzki-Janson, Ingrid
• Signature of the printed copy: 0700/UMD 11422