Abstract
This study aims to evaluate the influence of additives chitosan, zirconia and hydroxyapatite on bond strength of calcium aluminate cement (CAC) to the root-end filling. A hundred bovine incisors will be selected and instrumented up size 120 K file and adapted to a device to perform the apicectomy and root-end preparation (1.5 mm in diameter and 2 mm deep). The teeth will be divided into f…