Evaluation of Changes in Nasopalatine Canal Morphology According To Dentition Status by Computed Tomography

Öz

Objective: The nasopalatine canal (NPC) is one of the important anatomic structures in anterior maxilla. The aim of this study was to evaluate the changes in NPC morphology according to dentition status in the maxillary anterior region by computed tomography (CT). Methods: Computed tomography images of 100 patients were screened retrospectively. Images were divided into two groups by dental status: an edentulous group (EG) of 50 patients who have edentulous premaxilla and a control group (CG) of 50 patients who have all incisor teeth in the premaxillary region. After recording the age, sex, and dentition status of the patients, the NPC diameter, NPC length, incisive foramen (IF) diameter, and angle between the NPC and palatine bone were measured in sagittal sections, and the number of NPCs was determined in axial sections. Results: There was no significant difference between NPC angle and dentition status (p=0.151). The NPC diameter was significantly higher in the EG (p=0.002), as was the IF diameter (p=0.041). In addition, NPC length was significantly higher in the CG (p<0.001). A statistically significant and negative correlation was found between age and NPC length (p<0.001), and a positive correlation was found between age and NPC diameter (p=0.004). In addition, no statistically significant difference was found between sex and other parameters (p>0.05). Conclusion: The NPC length and diameter vary according to the age and dentition status of the patient. Changes in this anatomic structure should be evaluated pre-operatively in elderly patients by three-dimensional radiographic evaluation.

Anahtar Kelimeler

• Computed tomography
• nasopalatine canal
• anatomy
• dentition
• incisive foramen

Nazopalatin Kanal Morfolojisinin Dentisyon Durumuna Göre Değişiminin Bilgisayarlı Tomografi ile İncelenmesi

Öz

Amaç: Nazopalatin kanal maksiller anterior bölgedeki önemli anatomik oluşumlardan biridir. Bu çalışmanın amacı nazopalatin (NP) kanal morfolojisinin dentisyon durumuna göre değişimini bilgisayarlı tomografi (BT) ile incelemektir. Yöntem: Toplam 100 hastaya ait bilgisayarlı tomografi görüntüleri retrospektif olarak taranmıştır. Bilgisayarlı tomografi görüntüleri iki gruba ayrıldı: maksiller ön bölgesi dişsiz olan (DG) 50 hasta ve maksiller ön bölgede diş kaybı olmayan, kontrol grubu (KG) olarak adlandırılan 50 hasta. Hastaların yaş, cinsiyet ve dentisyon durumları not edildikten sonra sagittal kesit üzerinde NP kanal uzunluğu, insiziv foramen çapı, NP kanal çapı ve NP kanal ile sert damak arasındaki nazopalatin kanal açısı ölçülmüştür. Aksiyal kesitler üzerinde ise NP kanal sayısı tespit edilmiştir. Bulgular: Nazopalatin açısı ile dentisyon durumu arasında istatistiksel olarak anlamlı bir fark bulunmamıştır (p=0,151). IF çapı DG da istatistiksel olarak anlamlı derecede daha yüksek bulunmuştur (p=0,041). Nazopalatin kanal uzunluğu ise KG da anlamlı derecede yüksek bulunmuştur (p<0,001). Yaş ve NP uzunluğu arasında anlamlı derecede negatif (p<0,001), yaş ve NP kanal çapı arasında ise anlamlı derecede pozitif korelasyon tespit edilmiştir (p=0,004). Buna karşılık cinsiyet ve parametreler arasında anlamlı bir fark bulunmamıştır (p>0,05). Sonuç: Nazopalatin kanal uzunluğu ve çapı hastaların yaşı ve dentisyon durumuna göre değişmektedir. İleri yaştaki hastalarda üç boyutlu radyografilerle bu anatomik yapıların değişimi preoperative olarak değerlendirilmelidir.

Anahtar Kelimeler

• Bilgisayarlı tomografi
• nazopalatin kanal
• anatomi
• dentisyon
• insiziv foramen

Kaynakça

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