Gutta percha points endodontic point material

It should be noted in passing that the possibility of using only one of the materials (eg, gutta percha points or sealer paste) has been considered for endodontic therapy [17]. The concept has been called monoblock . However, though it would be advantages in the clinic if it were feasible, it has not proved possible to develop the approach for practical use. Either gutta percha or sealer alone cannot produce a seal of sufficient soundness or durability to give acceptable clinical results. 

Leakage around calcium hydroxide sealers has been studied experimentally, and findings have generally been satisfactory [34-36]. However, there have been some adverse reports [37], and these variations have been attributed to crucial differences in experimental methods [38]. Leakage appears to be related to both the solubility of the material and the questionable adhesion to both the dentine walls and the gutta percha points. The calcium hydroxide sealer Apexit, for example, was found to have a high solubility when set compared with other types of endodontic sealer [39] and, in some studies, sealer particles have been found to occur with the tissues at a considerable distance from the sample [40,41],... 

The main material used for obmration of the cleaned and disinfected root canal in contemporary endodontics is gutta percha. This is used because it is plastic and will take up the shape of the root canal when pressed into place [74]. A sealant is used in association with these gutta percha points, and its function is to fill any gaps between the points and the canal walls. This has the effect of improving the quality of the overall seal at the tooth root [73]. 

Materials employed as points are usually fabricated from gutta percha, though other materials have been considered (see Sections 10.2 and 10.3). Materials for sealers may be cements, including acid-base cements, or methacrylate monomer-based materials of the type used in composite resins. However, more commonly in modem endodontics, cements based on tricalcium silicate systems that set by hydration processes are used. This chapter discusses the wide variety of possible materials that can be used for this purpose, with some indication of the clinical effectiveness. 

Gutta percha is the most widely used material for endodontic points, for the reasons already described. However, other materials have been used, of which until recently, silver was the most important [13], and silver points had the advantage of being inherently bactericidal. 

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See also in sourсe #XX -- [ ]

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