“Tehlikeli Bölge” Gerçekten Tehlikeli mi?– Endodonik Bakış Açısı

Yıl 2022, Cilt: 11 Sayı: 3, 411 - 419, 04.10.2022

Deniz Yanık Şelale Özel

https://doi.org/10.53424/balikesirsbd.1107580

Öz

Amaç: Çalışmanın amacı konik ışınlı bilgisayarlı tomografi (KIBT) kullanarak tehlikeli bölgenin (TB) dentin kalınlığını belirlemede panoramik radyografinin doğruluğunu değerlendirmek ve mandibular azı dişlerinin dentin kalınlıklarını farklı seviyelerde incelemektir. Gereç ve Yöntem: Çalışma için 250 mandibular azı dişi seçildi. Panoramik radyografide dentin kalınlıkları ölçüldü. KIBT görüntüsünde mesiobukkal (MB), meziolingual (ML) ve distal köklerin dentin kalınlıkları ölçüldü. Referans noktası mandibular molarların furkasyonunun 3 mm, 4 mm ve 5 mm altı olarak belirlendi. İstatistiksel analiz yapıldı. Bulgular: CBCT ve panoramik arasındaki fark MB için 0,5 mm, ML için 0,48 mm ve distal için 0,43 mm idi. 3 mm ve 5 mm arasındaki dentin kalınlığındaki fark istatistiksel olarak anlamlı değildir (P>.05), oysa 4 mm furkasyon seviyesi her bir kök kanalı için 3 mm ve 5 mm'de önemli ölçüde daha düşüktü. Bu çalışma, panoramik radyografide tehlike bölgesinde 0,5 mm distorsiyon oluştuğunu göstermiştir. Sonuç: Çalışmamız panoramik radyografide 1 mm'den az olan dentin kalınlığının distorsiyon nedeniyle perforasyona daha yatkın olduğunu göstermiştir. Dentin kalınlığı furkasyonun 4 mm altında en düşük seviyedeydi. Sonuçlarımız, periapikal radyografinin bulunmadığı kliniklerde veya kurumlarda klinisyenlere yol gösterici olacaktır.

Anahtar Kelimeler

Konik ışınlı bilgisayarlı tomografi, Panoramik radyografi, Mandibular molar, Endodonti, Kök kanal şekillendirmesi

Is “Danger Zone” Really Dangerous? - An Endodontic Perspective

Öz

Aim: To evaluate the accuracy of panoramic radiography in determining dentin thickness of danger zone (DZ) using cone-beam computed tomography (CBCT) imaging to examine the dentin thicknesses of the mandibular molars at different levels. Materials and Methods: For the study, 250 mandibular molars were selected. Dentine thicknesses were measured on panoramic radiography. On the CBCT view, dentine thicknesses of mesiobuccal (MB), mesiolingual (ML), and distal roots were measured. The reference point was determined as 3 mm, 4 mm, and 5 mm below the furcation of mandibular molars. Statistical analysis was performed. Results: The discrepancy between CBCT and panoramic was 0.5 mm for MB, 0.48 mm for ML, and 0.43 mm for distal. The difference in the dentin thickness between 3 mm and 5 mm is not statistically significant(P>.05), whereas the 4 mm furcation level was significantly lower in either 3 mm and 5 mm for each root canal. This study showed that 0.5 mm distortion occurred in the danger zone on panoramic radiography. Conclusion: Our study showed that the dentin thickness of less than 1 mm in panoramic radiography is more prone to perforation because of distortion. The dentin thickness was lowest at 4 mm below the furcation. Our results can be a guide the clinicians in clinics or institutions where periapical radiography is not available.

Anahtar Kelimeler

Cone-beam computed tomography, Panoramic radiography, Mandibular molar, Endodontics, Root canal preparation

Kaynakça

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