Silva-Herzog FD, López AA, Galicia CA, Hernández MM

Language: Spanish
References: 24
Page: 271-276
PDF size: 181.04 Kb.

ABSTRACT

Objective: Using in vitro testing to determine the tensile strength and degree of resistance to fracture from vertical and lateral forces of teeth restored using different types of anchoring.
Hypothesis: There is a relationship between root fracture and the root-post system chosen for restoration.
Methods: We randomly selected 42 single-root teeth with similar characteristics and divided these into three groups, which were subjected to root-canal treatment prior to removal and restoration using cast-metal NPG posts, reinforced Rely X Fiber Post (3M ESPE) and Para Post Fiber Lux (Coltčne/Whaledent) fiberglass resin-post systems, depending on the group. All of the samples were subjected to the corresponding strength tests: vertical and lateral traction, up to the breaking point, i.e., when ejection and/or fracturing of the dental organ, core, and post occurs..
Results: Upon the application of lateral and vertical forces, teeth restored using Rely X fiber posts how greater resistance to fracture than those restored with cast post-and-core and Fiber Para Post Lux.
Conclusions: Though more difficult to dislodge from the conduit, teeth restored with a cast post-and-core system did not prove resistant to vertical and lateral forces, whereas those restored using fiberglass post systems showed better results.

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