Shear Resistance of Bonded Brackets in Enamel Treated with Different Deproteinizing Agents

Hernández-Zabaleta D.; Coronel-Zubiate F.T.; Chávez N.A.T.; Salazar O.P.; Torres E.A.J. · Journal of International Dental and Medical Research (2025)

Resumen

During orthodontic treatment, tensile, shear and torsional forces are applied to align and level the teeth. The present investigation, the shear strength of brackets bonded to enamel treated with different deproteinizing agents such as sodium hypochlorite, papain and hydrogen peroxide, which were used to remove proteins and improve adhesion, was compared. The teeth were collected from different dental treatment offices in the city of Chachapoyas over a period of 4 months. The teeth were washed and stored in sterile bottles with 0.9% sodium chloride (NaCl), which was changed every 7 days until the time of use. The sample was divided into eight test groups which were subjected to different deproteinizing agents, including a control group. Once the deproteinization had been carried out, the brackets were bonded to the vestibular surfaces of the teeth and finally their shear strength was evaluated with the Brookfield texturometer machine. The results showed that the deproteinizing agents with the highest resistance to bracket detachment were papain extracted from papaya serrana (Vasconcellea pubescens A. DC) and 10% Brix 3000 papain gel. While the other deproteinizing agents had no significant difference with respect to the control group. © (2025), (University of Dicle). All rights reserved.

Instituciones: Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas