Resumen

VALENZUELA ARANGUIZ, V. et al. Effects of the root planning in the dentin adhesión: a SEM study. Avances en Periodoncia [online]. 2010, vol.22, n.1, pp.19-25. ISSN 2340-3209.

The aim of this in vitro study was to analize some characteristics of dentinary adhesion over root surfaces exposed to periodontal disease an treated with root planning by observing the samples at SEM. 30 teeth were classified in three groups. Group 1: Teeth with periodontal disease treated only by root planning. Group 2: Teeth with periodontal disease treated by root planning and 34% fosforic acid etching. Group 3: Teeth with periodontal disease treated by root planning at and an adhesive composite restoration. Results: Group 1 presented a thick smear layer over all the treated surface. Group 2 presented an irregular adhesive layer. Group 3 showed a 15.9 µm thick layer that looks as an hybrid layer, composite tags were not found in this group. Conclusions: Dentine adhesion over teeth with periodontal disease and treated by root planning is achieved over a thick smear layer, which is not removed by fosforic acid. Hybrid layer and composite tags were not formed, so it is assumed that adhesion does not occur.

Palabras clave : Adhesion; hybrid layer; root planning; smear layer; root dentin.

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