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document
Investigation of maxillary tooth sizes in patients with palatal canine displacement . 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 .
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Intervention_Other
standardized radiographs
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Intervention_Other
dial caliper
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Outcome_Physical
maxillary tooth sizes
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Outcome_Physical
tooth widths
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Outcome_Physical
vestibulo-oral dimension
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Outcome_Other
Overall tooth width
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Outcome_Physical
crown diameters
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Outcome_Physical
tooth-size
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Outcome_Physical
dental-arch space
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Participant_Condition
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 .