.: ORİJİNAL ARAŞTIRMA
3D Finite Element Analysis of Stress Distribution Conical and Cylindrical Implants by Alveolar Ridge Splitting Technique: Analytical Study
Alveolar Kret Ayırma Tekniği ile Atrofik Çenelere Konik ve Silindirik İmplantların Yerleştirilmesinin 3B Sonlu Eleman Analizi ile Değerlendirilmesi: Analitik Çalışma
Turkiye Klinikleri J Dental Sci. 2022;28(2):260-5
doi: 10.5336/dentalsci.2021-84857
Makale Dili: EN
Tam Metin
Ücretsiz Erişim
ABSTRACT
Objective: Alveolar ridge splitting technique (ARST) is a horizontal bone augmentation technique used in atrophic alveolar ridge. The present study aimed to evaluate the insertion of conical and cylindrical implants with the same surface structure in atrophic alveolar ridges augmented by ARST and to analyze the stress distributions on the implant and adjacent bone surfaces using three dimensional (3D) finite element analysis (FEA). Material and Methods: The thickness of the atrophic alveolar ridge was adjusted to 5 mm. The implants were inserted in the atrophic alveolar ridges that were augmented by ARST with a torque of resistance of 35 Newtons. Stress distributions were evaluated by using FEA. Results: The results indicated that the conical implants resulted in lower strain on the implant and adjacent bone surfaces compared to cylindrical implants. It was also revealed that conical implants had a homogeneous stress distribution on the implant surfaces while the stress in cylindrical implants was mostly concentrated on the neck region. As the diameter of the implants increased, the Von Mises stress values on the adjacent bone surfaces decreased. Conclusion: Although no definitive recommendations can be made regarding the design of the implants used in ARST, the results of the present study indicated that conical implants could be more advantageous than cylindrical implants with regard to stress distribution.
Keywords: Dental implants; finite element analysis; stress; alveolar ridge augmentation
Objective: Alveolar ridge splitting technique (ARST) is a horizontal bone augmentation technique used in atrophic alveolar ridge. The present study aimed to evaluate the insertion of conical and cylindrical implants with the same surface structure in atrophic alveolar ridges augmented by ARST and to analyze the stress distributions on the implant and adjacent bone surfaces using three dimensional (3D) finite element analysis (FEA). Material and Methods: The thickness of the atrophic alveolar ridge was adjusted to 5 mm. The implants were inserted in the atrophic alveolar ridges that were augmented by ARST with a torque of resistance of 35 Newtons. Stress distributions were evaluated by using FEA. Results: The results indicated that the conical implants resulted in lower strain on the implant and adjacent bone surfaces compared to cylindrical implants. It was also revealed that conical implants had a homogeneous stress distribution on the implant surfaces while the stress in cylindrical implants was mostly concentrated on the neck region. As the diameter of the implants increased, the Von Mises stress values on the adjacent bone surfaces decreased. Conclusion: Although no definitive recommendations can be made regarding the design of the implants used in ARST, the results of the present study indicated that conical implants could be more advantageous than cylindrical implants with regard to stress distribution.
Keywords: Dental implants; finite element analysis; stress; alveolar ridge augmentation
ÖZET
Amaç: Alveolar kret ayırma tekniği (AKAT), atrofik çenelerde yatay kemik büyütme yöntemlerinden bir tanesidir. Bu çalışmadaki amacımız, kret ayırma tekniği ile aynı yüzey yapısına sahip konik ve silindirik formdaki farklı çaptaki implantları yerleştirmek, 3 boyutlu sonlu eleman analizi ile komşu kemik yüzeyinde ve implant yüzeylerinde oluşan stres dağılımlarını değerlendirmektir. Gereç ve Yöntemler: Alveolar kretin kalınlığı 5 mm'ye ayarlandoı. Kret ayırma ile genişletilmesi sonucu atrofik alveolar kretlere 35 Newton tork kuvveti ile implantlar yerleştirildi. Stres dağılımları SEA ile değerlendirildi. Bulgular: Konik implantların, implant yüzeyinde ve komşu kemik yüzeyinde oluşturdukları stres değerlerinin silindirik implantlara göre daha az olduğu görüldü. Silindirik implantların boyun bölgesinde stres yoğunlaşırken, konik implantlarda implant yüzeyine homojen dağıldı. İmplantlarda çap arttıkça komşu kemik yüzeyinde oluşan Von Mises stres değeri azaldı. Sonuç: Kret ayırma tekniğinde kullanılacak implant tasarımı ile kesin bilgiler olmasa da çalışmamız bize konik formlu implantların stres dağılımı açısından silindirik formlu implantlara göre daha avantajlı olacağını göstermiştir.
Anahtar Kelimeler: Dental implantlar; sonlu elemanlar analizi; stres; alveolar kret ogmentasyonu
Amaç: Alveolar kret ayırma tekniği (AKAT), atrofik çenelerde yatay kemik büyütme yöntemlerinden bir tanesidir. Bu çalışmadaki amacımız, kret ayırma tekniği ile aynı yüzey yapısına sahip konik ve silindirik formdaki farklı çaptaki implantları yerleştirmek, 3 boyutlu sonlu eleman analizi ile komşu kemik yüzeyinde ve implant yüzeylerinde oluşan stres dağılımlarını değerlendirmektir. Gereç ve Yöntemler: Alveolar kretin kalınlığı 5 mm'ye ayarlandoı. Kret ayırma ile genişletilmesi sonucu atrofik alveolar kretlere 35 Newton tork kuvveti ile implantlar yerleştirildi. Stres dağılımları SEA ile değerlendirildi. Bulgular: Konik implantların, implant yüzeyinde ve komşu kemik yüzeyinde oluşturdukları stres değerlerinin silindirik implantlara göre daha az olduğu görüldü. Silindirik implantların boyun bölgesinde stres yoğunlaşırken, konik implantlarda implant yüzeyine homojen dağıldı. İmplantlarda çap arttıkça komşu kemik yüzeyinde oluşan Von Mises stres değeri azaldı. Sonuç: Kret ayırma tekniğinde kullanılacak implant tasarımı ile kesin bilgiler olmasa da çalışmamız bize konik formlu implantların stres dağılımı açısından silindirik formlu implantlara göre daha avantajlı olacağını göstermiştir.
Anahtar Kelimeler: Dental implantlar; sonlu elemanlar analizi; stres; alveolar kret ogmentasyonu
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