Yıl 2017, Cilt 34, Sayı 1, Sayfalar 8 - 13 2017-01-02

Evaluation of stress distribution characteristics on various bar designs of three-implant-supported mandibular overdentures
Üç-implant-destekli mandibular overdenture protezlerde çeşitli bar tasarımlarının stres iletim karakterlerinin değerlendirilmesi

Emre Tokar [1] , Serdar Polat [2] , Bülent Uludağ [3]

442 1100

Objective: Implant-supported-overdentures, instead of conventional complete dentures, are frequently recommended to rehabilitate patients having edentulous mandible. The aim of this study was to evaluate the stress distribution characteristics of mandibular implant-supported overdentures with four different bar attachment designs.

Materials and Method: A photoelastic mandibular model with three implants (3.75 mm - 13 mm) placed at the interforaminal region was generated from a cast of an edentulous mandible. Four mandibular bar overdenture designs were fabricated: bar-clip, bar-galvano, bar-locator, and bar-ceka. Axial vertical loads (135 N) were applied to the central fossa of the right first molar area for each overdenture design. Stress concentrations were recorded photographically and analyzed visually.

Results: The tested bar attachment designs revealed low and moderate stress levels. The lowest stress was observed with the bar-clip design, followed by bar-locator, bar-ceka, and bar-galvano designs.

Conclusion: The loads were distributed to all of the implants. Studied designs experienced moderate stress levels around the loaded side implant. Bars with distally placed stud attachments and surface treatment with electroforming seems to increase stress levels around the implants.

Amaç: Dişsiz mandibulaya sahip hastaların tedavisinde implant-destekli overdenture protezler konvansiyonel tam protezlerin yerine sıklıkla tercih edilmektedirler. Bu çalışmanın amacı, dört farklı bar tutucu tasarımına sahip üç-implant-destekli mandibular overdenture protezlerin stres iletim karakterlerini incelemektir.

Gereç ve Yöntem: Dişsiz mandibular bir modelden interforaminal bölgesine üç implantın (3.75 mm - 13 mm)  yerleştirildiği bir fotoelastik mandibular model hazırlandı. Bu model üzerine dört farklı bar tasarımı olan mandibular overdenture yapıldı: bar klips, bar-galvano, bar-locator ve bar-ceka. Her bir overdenture tasarımında, sağ birinci molar dişin santral fossasına vertikal yükleme (135 N) yapıldı. Stres konsantrasyonları fotoğrafik olarak kaydedildi ve görsel olarak analiz edildi.

Bulgular: Çalışmada kullanılan bar tutucu tasarımları düşük ve orta derecelerde stres gösterdi. En düşük stres bulgusu bar klips tasarımında bulunurken, bar-locator, bar-ceka ve bar-galvano tasarımları bunu takip etti.

Sonuç: Uygulanan yükler bütün implantlara dağıtılmıştır. Çalışmada değerlendirilen tasarımlar yükleme yapılan taraftaki implantın çevresinde orta derecede strese sebep olmuştur. Bar tutucunun distallerine stud tutucu uygulaması ve elektroforming yüzey işlemi implantların çevresindeki stresi arttırabilir.

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Konular Sağlık Bilimleri ve Hizmetleri
Dergi Bölümü Özgün Araştırma Makalesi
Yazarlar

Yazar: Emre Tokar

Yazar: Serdar Polat

Yazar: Bülent Uludağ

Bibtex @araştırma makalesi { gaziaot273903, journal = {Acta Odontologica Turcica}, issn = {}, eissn = {2147-690X}, address = {Gazi Üniversitesi}, year = {2017}, volume = {34}, pages = {8 - 13}, doi = {10.17214/gaziaot.273903}, title = {Evaluation of stress distribution characteristics on various bar designs of three-implant-supported mandibular overdentures}, key = {cite}, author = {Polat, Serdar and Tokar, Emre and Uludağ, Bülent} }
APA Tokar, E , Polat, S , Uludağ, B . (2017). Evaluation of stress distribution characteristics on various bar designs of three-implant-supported mandibular overdentures. Acta Odontologica Turcica, 34 (1), 8-13. DOI: 10.17214/gaziaot.273903
MLA Tokar, E , Polat, S , Uludağ, B . "Evaluation of stress distribution characteristics on various bar designs of three-implant-supported mandibular overdentures". Acta Odontologica Turcica 34 (2017): 8-13 <http://dergipark.gov.tr/gaziaot/issue/26005/273903>
Chicago Tokar, E , Polat, S , Uludağ, B . "Evaluation of stress distribution characteristics on various bar designs of three-implant-supported mandibular overdentures". Acta Odontologica Turcica 34 (2017): 8-13
RIS TY - JOUR T1 - Evaluation of stress distribution characteristics on various bar designs of three-implant-supported mandibular overdentures AU - Emre Tokar , Serdar Polat , Bülent Uludağ Y1 - 2017 PY - 2017 N1 - doi: 10.17214/gaziaot.273903 DO - 10.17214/gaziaot.273903 T2 - Acta Odontologica Turcica JF - Journal JO - JOR SP - 8 EP - 13 VL - 34 IS - 1 SN - -2147-690X M3 - doi: 10.17214/gaziaot.273903 UR - http://dx.doi.org/10.17214/gaziaot.273903 Y2 - 2016 ER -
EndNote %0 Acta Odontologica Turcica Evaluation of stress distribution characteristics on various bar designs of three-implant-supported mandibular overdentures %A Emre Tokar , Serdar Polat , Bülent Uludağ %T Evaluation of stress distribution characteristics on various bar designs of three-implant-supported mandibular overdentures %D 2017 %J Acta Odontologica Turcica %P -2147-690X %V 34 %N 1 %R doi: 10.17214/gaziaot.273903 %U 10.17214/gaziaot.273903
ISNAD Tokar, Emre , Polat, Serdar , Uludağ, Bülent . "Üç-implant-destekli mandibular overdenture protezlerde çeşitli bar tasarımlarının stres iletim karakterlerinin değerlendirilmesi". Acta Odontologica Turcica 34 / 1 (Ocak 2017): 8-13. http://dx.doi.org/10.17214/gaziaot.273903