Bacterial leakage in endodontics: An improved method for quantification

A laboratory assessment of coronal bacterial leakage in root canals filled with new and conventional sealers

“…1993, Al‐Ghamdi & Wennberg 1994), the use of bacteria as markers in an ex vivo model was introduced to overcome some of the limitations of dye leakage studies (Torabinejad et al. 1990, Michailesco et al. 1996, Barrieshi et al.…”

“…Although the validity of laboratory leakage tests has been criticized , Al-Ghamdi & Wennberg 1994, the use of bacteria as markers in an ex vivo model was introduced to overcome some of the limitations of dye leakage studies (Torabinejad et al International Endodontic Journal, 42, 303-312, 2009 1990, Michailesco et al 1996, Barrieshi et al 1997, Malone & Donnelly 1997. The model used in this study was patterned after that designed by Torabinejad et al (1990) and has been modified and used by several other researchers for coronal leakage studies .…”

Efficacy of Two Contemporary Single-cone Filling Techniques in Preventing Bacterial Leakage

“…Although the use of dyes, radioisotopes, fluid filtration, bacteria, and endotoxin penetration techniques have been used to evaluate the seal of endodontic materials (12)(13)(14), the bacteria leakage model has been advocated as a more clinically relevant model (15). Thus, the purpose of this study was to compare the apical seal of two new single-cone filling systems vs. a gutta-percha warm vertical compaction technique using a bacterial leakage model.…”

A comparison of thermoplasticized injectable gutta-percha techniques in ribbon-shaped canals : adaptation to canal walls

“…LaCombe등 15) 은 근관밀폐효과면에서 측방가압 법이 저온 또는 고온의 열연화 gutta-percha보다 더 우수 하다고 하였다. 근관 충전법의 근관밀폐효과를 평가하기 위한 실험방법 중 가장 일반적인 것은 색소 16) 나 미생물 17) , 방사선 동위원소 Ⅲ. 실험결과 각 군의 절단 수준별 근관내 gutta-percha 평균 면적비 는 Table 2와 같다.…”