Bacterial leakage in coronally unsealed root canals obturated with 3 different techniques.

OBJECTIVE The purpose of this in vitro study was to evaluate the coronal leakage of microorganisms from saliva into root canals filled by 3 obturation techniques. STUDY DESIGN Obturated canals were mounted in an apparatus and then exposed to human saliva. The number of days required for the entire contamination of the root canal was recorded. Evaluation was carried out for 60 days. RESULTS Regardless of the technique used, a significant number of specimens were contaminated after 30 and 60 days. No significant differences were detected among the techniques (P >.05). CONCLUSIONS Results indicated that none of the techniques tested could predictably produce a coronal bacteria-tight seal of the root canal after direct saliva challenge.

[1]  I. N. Rôças,et al.  Coronal leakage of two root canal sealers containing calcium hydroxide after exposure to human saliva. , 1999, Journal of endodontics.

[2]  J. Siqueira,et al.  Recontamination of coronally unsealed root canals medicated with camphorated paramonochlorophenol or calcium hydroxide pastes after saliva challenge. , 1998, Journal of endodontics.

[3]  W. Saunders,et al.  Coronal leakage in teeth root-filled with gutta-percha and two different sealers after long-term storage. , 1997, Endodontics & dental traumatology.

[4]  W. Saunders,et al.  An in vitro study of the coronal leakage of two root canal sealers using an obligate anaerobe microbial marker. , 1996, International endodontic journal.

[5]  C. Cutler,et al.  An in-vitro study of smear layer removal and microbial leakage along root-canal fillings. , 1996, International endodontic journal.

[6]  S. Friedman,et al.  Evaluation of success and failure after endodontic therapy using a glass ionomer cement sealer. , 1995, Journal of endodontics.

[7]  E. Saunders,et al.  Coronal leakage as a cause of failure in root-canal therapy: a review. , 1994, Endodontics & dental traumatology.

[8]  M. Günday,et al.  Dentinal wall adaptation of thermoplasticized gutta-percha in the absence or presence of smear layer: a scanning electron microscopic study. , 1993, Journal of endodontics.

[9]  M. Torabinejad,et al.  Human saliva penetration of coronally unsealed obturated root canals. , 1993, Journal of endodontics.

[10]  M Goldman,et al.  Microleakage--full crowns and the dental pulp. , 1992, Journal of endodontics.

[11]  Gutmann Jl.  Clinical, radiographic, and histologic perspectives on success and failure in endodontics. , 1992 .

[12]  C. E. Brown,et al.  Human saliva coronal microleakage in obturated root canals: an in vitro study. , 1991, Journal of endodontics.

[13]  R. Weller,et al.  A comparison of thermoplasticized injectable gutta-percha obturation techniques. , 1991, Journal of endodontics.

[14]  M. Torabinejad,et al.  In vitro bacterial penetration of coronally unsealed endodontically treated teeth. , 1990, Journal of endodontics.

[15]  C. E. Brown,et al.  A statistical analysis of surgical and nonsurgical endodontic retreatment cases. , 1989, Journal of endodontics.

[16]  S. Madison,et al.  An evaluation of coronal microleakage in endodontically treated teeth. Part III. In vivo study. , 1988, Journal of endodontics.

[17]  S. Madison,et al.  An evaluation of coronal microleakage in endodontically treated teeth. Part I. Time periods. , 1987, Journal of endodontics.

[18]  W. B. Johnson.  A new gutta-percha technique. , 1978, Journal of endodontics.

[19]  F. Yee,et al.  Three-dimensional obturation of the root canal using injection-molded, thermoplasticized dental gutta-percha. , 1977, Journal of endodontics.

[20]  Stephen Cohen,et al.  Pathways of the Pulp , 1976 .

[21]  H Schilder,et al.  Filling root canals in three dimensions. , 1967, Dental clinics of North America.