Bacterial Microleakage of Barrier Materials in Obturated Root Canals

Intraorifice sealing ability of different materials in endodontically treated teeth

“…The use of a material as an intraorifice barrier could mitigate bacterial filtration if the restoration were lost or unsuitable (7). A variety of experimental models may be used to measure the filtration through filled roots; they include dye penetration (14), fluid transport (15) and bacterial penetration (16). In the present study, glucose penetration (11) was used.…”

An In Vitro Comparison of Bacterial Leakage of Three Common Restorative Materials Used as an Intracoronal Barrier

“…Intracoronal barriers have been placed in endodontically treated teeth to prevent the penetration of bacteria and their byproducts. Although all restorative materials leak to some degree (14), their use as intracoronal barriers is effective in reducing the extent of microleakage (15)(16)(17)(18). This study showed leakage within each of the three experimental groups by 120 days.…”

“…Bonded restorations are also recommended by Howdle et al (19) to minimize leakage. In a recent study, Çelik et al (16) showed that glass ionomer leaks significantly less when compared with dentin-bonding agent/flow-able composite.…”

“…A myriad of commonly used temporary and permanent restorative materials have been studied as intracoronal barriers (15)(16)(17)(18). Characteristics that qualify a restorative material as an ideal intracoronal barrier include ease and speed of placement, sealing efficacy, and high bond strength.…”

Coronal Microleakage of Two Root-end Filling Materials Using a Polymicrobial Marker

“…The combination of gutta percha and a sealer is the most widely used technique in clinical practice (1) to accomplish this. Several studies have shown that a root canal filling shows leakage of microorganisms when the coronal part of the filling is contaminated by oral flora (2,3).…”