Journals / Clinical Dentistry and Research / 2015 / Cilt: 39 - Sayı: 1

MACACA FASCICULARİSLERDE İMPLANT DESTEKLİ SABİT PROTEZLERİN KARŞIT ÇENEDEKİ DIŞ YAPISI VE PERİODONTAL LİGAMENT GENİŞLİĞİNE ETKİSİ

THE EFFECT OF IMPLANT-SUPPORTED FIXED PROSTHESIS ON THE PERIODONTAL LIGAMENT WIDTH AND STRUCTURE IN OPPOSING NATURAL TEETH OF MACACA FASCICULARIS

Pages
4–11
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: PDL widening might reflect a functional response to occlusal forces from the ‘rigidly ankylosed’ implant-supported fixed prosthesis.

📌 3 Key Takeaways

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Objective & Hypothesis:Background and aims: Although rehabilitation of the partially dentate jaw with implant-supported fixed prosthesis has achieved high success rates, little is known regarding their effects on the opposing natural dentition.
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Key Findings & Data:Materials and Methods: Test samples consisted of four healthy adult male Macaca fascicularis with implant-supported 3-unit bridgework at the second premolar-second molar regions of their mandibles – one side for immediate-loading and the other side for delayed-loading, in a split mouth design.
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Conclusion & Impact:Conclusion: PDL widening might reflect a functional response to occlusal forces from the ‘rigidly ankylosed’ implant-supported fixed prosthesis.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Background and aims: Although rehabilitation of the partially dentate jaw with implant-supported fixed prosthesis has achieved high success rates, little is known regarding their effects on the opposing natural dentition. The periodontal ligament (PDL) functions as a dynamic attachment apparatus, and responds to occlusal forces by widening/narrowing and alterations in collagen fiber density/ orientation. This study aimed to determine the effects of occlusal load from implant-borne bridgework on PDL of the opposing natural teeth. Materials and Methods: Test samples consisted of four healthy adult male Macaca fascicularis with implant-supported 3-unit bridgework at the second premolar-second molar regions of their mandibles – one side for immediate-loading and the other side for delayed-loading, in a split mouth design. Another pair of monkeys with natural dentition served as normal controls. After 3 months of functional loading, the animals were sacrificed. Non-decalcified sections were prepared for histomorphometric assessment of PDL structure, cervical and apical widths. Results: PDL collagen fiber density and orientation were similar in both groups and no signs of inflammation were present. The width of PDL of the teeth in the experiment group at the cervical and apical regions were significantly increased compared to control (p<0.05). Conclusion: PDL widening might reflect a functional response to occlusal forces from the ‘rigidly ankylosed’ implant-supported fixed prosthesis.

Özet

Amaç: Kısmi dişsizlik durumlarında implant destekli sabit protezler tedavi seçeneği yüksek başarı oranlarıyla uygulanmasına rağmen bu tedavinin karşıt çenedeki etkileri çok az bilinmektedir. Periodontal ligament dinamik bir ataçman olarak fonksiyon görür ve kollojen liflerin sıklığı ve uzanımını değiştirerek okluzal yükler karşısında kalınlaşıp incelerek yanıt oluşturur. Bu çalışmada implant taşıyıcılı köprülerin olduğu çenenin oluşturduğu okluzal yükün karşıt çenedeki doğal dişlerin PDL durumu üzerindeki etkilerinin araştırılması amaçlanmıştır. Gereç ve Yöntem: İkinci premolar ikinci molar mandibular bölgeye implant yerleştirilen 4 adet yetişkin erkek Macaca fascicularis’e 3 üyeli köprüler yapılmıştır. bir yarım çenedeki implantlara erken yükleme diğer tarafa ise geç yükleme yapılarak iki ayrı tasarım uygulandı. Doğal dişlenmeye sahip bir çift maymunun ise kontrol grubu olarak belirlendi. Fonsiyonel yüklemeden üç ay sonra hayvanlar tıbbi koşullar altında öldürüldü. PDL yapısı,servikal ve apikal genişliğinin histomorfometrik incelemesi için non-dekalsifiye kesitler hazırlandı. Bulgular: PDL kollejen liflerin sıklığı ve uzanımı her iki grupta benzer bulundu ve enflamasyon bulgularına rastlanmadı. Kontrol grubu ile karşılaştırıldığında deney grubundaki dişlerin PDL genişliğinin servikal ve apikal bölgelerde belirgin olarak arttığı belirlendi. (p<0.05) Sonuçlar: Rijit olarak ankiloze olan implant destekli sabit protezlerin oluşturdukları okluzal yüklere PDL genişleyerek fonksiyonel bir cevap verebilir.

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Cite This Article

SİAR, C. H., PUA, C. K., ROMANOS, G., TOH, C. G., NG, K. H. (2015). MACACA FASCICULARİSLERDE İMPLANT DESTEKLİ SABİT PROTEZLERİN KARŞIT ÇENEDEKİ DIŞ YAPISI VE PERİODONTAL LİGAMENT GENİŞLİĞİNE ETKİSİ. Clinical Dentistry and Research, Cilt: 39 - Sayı: 1, 4–11. https://ajindex.com/articles/147370

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