Is Closed-Bar Design a Better Option for All-on-Four Concept ?

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Pervanlı N., Polat C., Koç O.

The 48th Annual EPA Congress, Nevşehir, Türkiye, 11 - 13 Eylül 2025, ss.1-32, (Tam Metin Bildiri)

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Nevşehir
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1-32
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

Is Closed-Bar Design a Better Option for All-on-Four Concept ?

All-on-Four Konsepti İçin Kapalı Bar Tasarımı Daha İyi Bir Seçenek Mi?

 

When tilted implants are incorporated into a multi-implant prosthesis, the distribution of implants and prosthetic rigidity help reduce or modify these bending forces, lowering their negative impact.

Analyse the stress distribution in the implant, bone and prostheses with distal implants placed at 30 and 45 degrees and evaluate the effectiveness of a bar-supported design.

 

  Model I: A straight implant and abutment were placed at a 30° angulation in the maxillary bone, positioned at the level of the second premolar.   

  Model II: The implant placement were identical to Model I. In addition, a palatal bar design was incorporated into the framework at the level of the first molar.   

  Model III: A straight implant and abutment were placed at a 45° angulation in the maxillary bone, positioned at the level of the second premolar.   

  Model IV: The implant placement were identical to Model III. Additionally, a palatal bar design was incorporated into the framework at the level of the first molar