An Assessment of Microbial Coronal Leakage of Temporary Filling Materials in Endodontically Treated Teeth

Abstract

This in vitro study evaluated the microbial leakage of Cavit, IRM, and Dyract when used as temporary filling materials after root canal treatment. The degree of coronal leakage was assessed by using a microbiological marker consisting of Streptococcus faecalis and Candida albicans. For each of the two organisms, a set of 15 maxillary premolars were prepared chemomechanically and obturated with thermoplasticized gutta-percha. A 3.5-mm thick layer of one of the three temporary filling materials was inserted in the access cavities of the teeth from each group (each group was compromised of five teeth). The control teeth (four positive and four negative) lacked any filling material over the gutta-percha, whereas the orifice and the apical foramen of the negative control were completely sealed with nail polish. Each tooth was placed in a well of a 24-well tissue culture plate and embedded in trypticase soy broth and 0.5% Bactoagar. An organism suspension was inoculated in the access cavity, and microbial penetration was detected as an increase in turbidity of the broth. At the end of 30 days, the results showed that all positive control teeth leaked within 1 week, whereas those that served as negative control remained uncontaminated throughout the test period. With both organisms, IRM started to leak after 10 days, whereas Cavit and Dyract leaked after 2 weeks.

Setting properties and sealing ability of hydraulic temporary sealing materials

“…However, there is no ideal material which meets all the requisites listed above. Hydraulic temporary sealing materials have long been in routine use because they exhibit high sealing property and are premixed for easy use with no inconsistency attributable to mixing 8) . This material sets gradually because it starts setting only when it comes in contact with water.…”

Interim and temporary restoration of teeth during endodontic treatment

“…• temporary restorations in teeth with only an access cavity 52,63,65,67,[84][85][86][87][88][89][90][91][92][93] -with thermocycling 52,63,67,90,91,93 -with loading 92 -with thermocycling and mechanical loading, 84 • extensive interim restorations after thermal stress, 76 • extensive interim restorations with access cavities but no loading or thermocycling, 29 • moderate interim restorations with access cavity, thermocycling and the different interfaces between the materials, and 14,51 • access cavities cut through 'permanent' restorations. 39 Despite the large number of studies that have been carried out, none have examined the integrity of interim restorations after cyclic loading.…”

Evaluación in vitro del grado de microfiltración de tres cementos provisionales

“…La relación del fracaso endodóntico con la microfiltración de ciertos materiales ha estado estrechamente relacionada, cuando el tiempo del cemento provisional en boca excedía el lapso predispuesto por el fabricante 9,11 . La existencia de degeneración aumentaba con el subsecuente ingreso de fluidos orales contaminados a lo largo de la interfase diente-restauración 12 , lo que sucede con relativa frecuencia considerando que la cavidad bucal es un albergue de un gran porcentaje de microorganismos que cooperan con el ecosistema humano 10 , de ahí la importancia de seleccionar adecuadamente el material para sellado temporal 13,14 .…”