Endodontik Cerrahide Yenilikler
Özet
Endodontik cerrahi, geleneksel kök kanalı yenileme seçeneklerinin yetersiz kaldığı durumlarda, özellikle apikal periodontitis vakalarında uygulanan apikal rezeksiyon ve kök ucu dolgusu işlemlerini kapsayan kritik bir tedavi seçeneğidir. Son yıllarda yaşanan teknolojik gelişmelerle birlikte, geleneksel endodontik cerrahi yerini mikroskop ve ultrasonik uçların kullanıldığı mikrocerrahiye bırakarak başarı oranlarını önemli ölçüde artırmıştır. Geleneksel yöntemlerde 2D grafiler kullanılırken, günümüzde konik ışınlı bilgisayarlı tomografi (KIBT) sayesinde periapikal lezyonların yayılımı ve anatomik ilişkileri üç boyutlu olarak hatasız tespit edilebilmekte ve cerrahi rehberler hazırlanabilmektedir. Operasyon mikroskobunun sağladığı x32'ye varan yüksek büyütme ve aydınlatma, osteotomi boyutunu 10 mm'den 5 mm'nin altına indirerek doku hasarını en aza indirmekte; istmus, mikro kırıklar ve lateral kanallar gibi anatomik varyasyonların detaylı analizine olanak tanımaktadır. Kök ucunun 3-4 mm kesilmesi lateral kanalları %98 azaltırken, retrograd kavite preparasyonu için geleneksel frezler yerine ultrasonik aletlerin ve Er,Cr:YSGG lazerin kullanımı hem mikrosızıntıyı hem de komplikasyonları minimize etmektedir. Kök ucu dolgu materyali olarak biyouyumlu ve antimikrobiyal mineral trioksit agregası (MTA) yaygın olarak tercih edilmekle birlikte, uygulama kolaylığı ve düşük enflamasyon avantajlarıyla Biodentin ve BioAggregate gibi yeni kalsiyum silikat bazlı materyaller de başarıyla kullanılmaktadır.
Endodontic surgery is a critical treatment option encompassing apical resection and root-end filling, particularly applied in apical periodontitis cases where traditional root canal retreatment options are exhausted. With recent technological advancements, traditional endodontic surgery has transitioned into microsurgery utilizing microscopes and ultrasonic tips, significantly increasing success rates. While 2D radiographs were used in traditional methods, cone-beam computed tomography (CBCT) now enables error-free three-dimensional detection of the true extent and anatomical relationships of periapical lesions and allows the fabrication of surgical guides. The high magnification of up to x32 and illumination provided by the operating microscope reduce the osteotomy size from 10 mm to under 5 mm, minimizing tissue damage and allowing detailed analysis of anatomical variations such as isthmuses, microfractures, and lateral canals. Resecting 3-4 mm of the root end reduces lateral canals by 98%, and using ultrasonic instruments or Er,Cr:YSGG laser for retrograde cavity preparation instead of traditional burs minimizes both microleakage and complications. While biocompatible and antimicrobial mineral trioxide aggregate (MTA) is widely preferred as a root-end filling material, new calcium silicate-based materials such as Biodentin and BioAggregate are also successfully used due to their ease of application and low inflammation advantages.
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