Radiomorphometric analysis of edentulous posterior mandibular ridges in the first molar region: a cone-beam computed tomography study
Küçük Resim Yok
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Korean Acad Periodontology
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Purpose: The aim of our study was to determine the prevalence and degree of lingual concavities in the first molar region of the mandible to reduce the risk of perforating the lingual cortical bone during dental implant insertion. Methods: A total of 163 suitable cross-sectional cone-beam computed tomography images of edentulous mandibular first molar regions were evaluated. The mandibular morphology was classified as a U-configuration (undercut), a P-configuration (parallel), or a C-configuration (convex), depending on the shape of the alveolar ridge. The characteristics of lingual concavities, including their depth, angle, vertical location, and additional parameters, were measured. Result: Lingual undercuts had a prevalence of 32.5% in the first molar region. The mean concavity angle was 63.34 degrees +/- 8.26 degrees, and the mean linear concavity depth (LCD) was 3.03 +/- 0.99 mm. The mean vertical distances of point P from the alveolar crest (Vc) and from the inferior mandibular border were 9.39 +/- 3.39 and 16.25 +/- 2.44, respectively. Men displayed a larger vertical height from the alveolar crest to 2 mm coronal to the inferior alveolar nerve (Vcb) and a wider LCD than women (P<0.05). Negative correlations were found between age and buccolingual width at 2 mm apical to the alveolar crest, between age and Vcb, between age and Vc, and between age and LCD (P<0.05). Conclusions: The prevalence of lingual concavities was 32.5% in this study. Age and gender had statistically significant effects on the lingual morphology. The risk of lingual perforation was higher in young men than in the other groups analyzed.
Açıklama
Anahtar Kelimeler
Alveolar Ridge, Cone-Beam Computed Tomography, Dental Implants, Edentulous Jaw, Mandible
Kaynak
Journal Of Periodontal And Implant Science
WoS Q Değeri
Q2
Scopus Q Değeri
Q3
Cilt
50
Sayı
1
