Comparative Study of Dentine Permeability after Apicectomy and Surface Treatment with 9.6 µm TEA CO2 and Er:YAG Laser Irradiation

Failure of apicectomies is generally attributed to dentine surface permeability as well as to the lack of an adequate marginal sealing of the retrofilling material, which allows the percolation of microorganisms and their products from the root canal system to the periodontal region, thus compromising periapical healing. The purpose of this study was to evaluate dentine and the marginal permeability after apicectomy and surface treatment with 9.6 µm TEA CO2 or Er:YAG 2.94 µm laser irradiation. Sixty-five single rooted human endodontically treated teeth were divided into five experimental groups: group I (control), apicectomy with high speed bur; group II, similar procedure to that of group I, followed by dentinal surface treatment with 9.6 µm CO2 laser; group III, similar procedure to group I followed by dentinal surface treatment with Er:YAG laser 2.94 µm; group IV, apicectomy and surface treatment with CO2 9.6 µm laser; and group V, apicectomy and surface treatment with Er:YAG laser 2.94 µm. The analysi...