Verlagerungsgrad der 3. Molaren im Unterkiefer in Bezug auf das skelettale Wachstumsmuster und Geschlecht bei kieferorthopädischen Patienten
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Philipps-Universität Marburg
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Abstract
Background: Wisdom teeth are frequently extracted as a preventive measure to circumvent the eventuality of later complications. The extraction of mandibular wisdom teeth in particular is regarded as one of the most high-risk procedures in dentistry. The mandible, in contrast to the maxilla, has greater growth potential and develops over a longer period of time. The position of the wisdom teeth in the mandible depends on the space available in the bone. Mandibular growth is influenced by gender and the skeletal growth pattern, which is classified into brachyfacial ("short face"), mesofacial, and dolichofacial ("long face"). So far, there is no clear consensus within the available publications regarding the interaction between gender, skeletal growth pattern, and the position of mandibular wisdom teeth.
Aim: This dissertation aims to investigate the correlation between the degree of impaction of mandibular wisdom teeth, the skeletal growth pattern, and gender.
Materials and methods: X-rays (orthopantomogram (OPG), lateral cephalometric radiograph (LCR)) and gypsum models of 111 patients were evaluated retrospectively. An index was created to determine the degree of impaction of third molars in the mandible, and patients were categorized according to their impaction, gender, and skeletal growth pattern. Only data from patients who had reached the cervical vertebral maturation (CVM) stage VI, which indicates completed skeletal growth based on the cervical vertebrae visible on the LCR, were used. The Chi-squared test was used for the statistical analysis. The level of significance was set at p = 0,05.
Results: This study was able to confirm the hypotheses that the brachyfacial growth pattern significantly correlates with both a lower rate of mandibular third molar impaction and the male gender (p ≤ 0,05). The hypothesis of a correlation between gender and the degree of impaction of mandibular wisdom teeth could not be confirmed (p > 0,05).
Perspective: For future research in this area, the conduction of a similar study with a larger study population is recommended. If a clear and definitive correlation between the position of mandibular wisdom teeth and a specific growth pattern or gender can be demonstrated, this would provide essential information for determining the timing of mandibular wisdom tooth extraction and would also help to refine the prognosis for the functional development of these teeth.
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Dates
Created: 2025Issued: 2025-06-04Updated: 2025-06-04
Faculty
Medizin
Publisher
Philipps-Universität Marburg
Language
ger
Data types
DoctoralThesis
Keywords
KieferorthopädieMandibleZahnretentionGenderTooth ImpactionUnterkieferGeschlechtThird MolarWeisheitszahnOrthodontics
DFG-subjects
Retentio dentisVerlagerung
DDC-Numbers
610
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Krishnan, Leena Lalitha (0009-0004-0920-2490): Verlagerungsgrad der 3. Molaren im Unterkiefer in Bezug auf das skelettale Wachstumsmuster und Geschlecht bei kieferorthopädischen Patienten. : Philipps-Universität Marburg 2025-06-04. DOI: https://doi.org/10.17192/z2025.0264.