Investigation of Neutron Interaction Parameters of NiTi and CuNiTi Dental Wire and Screw Materials Using Experimental and Simulation Techniques

Öz

This study investigates the interactions that may occur when NiTi and CuNiTi dental orthodontic wire and screw materials, which are widely used in dentistry, are exposed to neutron radiation. A comprehensive analysis was carried out using both experimental and simulation approaches, and the results are presented. Monte Carlo simulations performed using the GEANT4 code were employed to calculate key neutron attenuation parameters, including the effective removal cross-section, half-value layer, mean free path, and radiation shielding efficiency for both epithermal and fast neutrons. In addition, dose measurement experiments were conducted for all materials using an Am–Be fast neutron source and a portable BF₃ neutron detector to determine their fast neutron absorption capacities. The obtained results were also compared with those of paraffin, a reference material commonly used for neutron shielding. Overall, the findings indicate that both NiTi and CuNiTi alloys exhibit notable absorption capacities for fast and epithermal neutrons.

Anahtar Kelimeler

• Neutron 1
• GEANT4 2
• Dental Wire 3
• NiTi alloy 4
• CuNiTi alloy 5.

Deneysel ve Simülasyon Teknikleri Kullanılarak NiTi ve CuNiTi Diş Teli ve Vida Malzemelerinin Nötron Etkileşim Parametrelerinin İncelenmesi

Öz

Bu çalışma, diş hekimliğinde yaygın olarak kullanılan NiTi ve CuNiTi ortodontik tel ve vida malzemelerinin nötron radyasyonuna maruz kaldığında meydana gelebilecek etkileşimleri araştırmaktadır. Hem deneysel hem de simülasyon yaklaşımları kullanılarak kapsamlı bir analiz yapılmış ve sonuçlar sunulmuştur. GEANT4 kodu kullanılarak gerçekleştirilen Monte Carlo simülasyonları, hem epitermal hem de hızlı nötronlar için etkili uzaklaştırma kesiti, yarı değer tabakası, ortalama serbest yol ve radyasyon kalkanlama verimliliği dahil olmak üzere temel nötron zayıflama parametrelerini hesaplamak için kullanılmıştır. Ek olarak, tüm malzemeler için Am–Be hızlı nötron kaynağı ve taşınabilir bir BF₃ nötron dedektörü kullanılarak doz ölçüm deneyleri yapılmış ve hızlı nötron soğurma kapasiteleri belirlenmiştir. Elde edilen sonuçlar, nötron kalkanlama için yaygın olarak kullanılan bir referans malzeme olan parafinin sonuçlarıyla da karşılaştırılmıştır. Genel olarak, bulgular hem NiTi hem de CuNiTi alaşımlarının hızlı ve epitermal nötronlar için kayda değer soğurma kapasiteleri sergilediğini göstermektedir.

Anahtar Kelimeler

• Nötron
• GEANT4
• Diş Teli
• NiTi Alaşımı
• CuNiTi Alaşımı.

Kaynakça

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