Gupta Ekta, Gurrala Chaitanya, Chaugule Tejas A, Abdul Qadeer Salman, Padmapriya C V, Sharma Mayank
Department of Orthodontics and Dentofacial Orthopeadics, Siddhpur Dental College and Hospital, Patan, Gujarat, India.
Department of Orthodontics and Dentofacial Orthopeadics, Sibar Institue of Dental Sciences, Guntur, Andhra Pradesh, India.
J Pharm Bioallied Sci. 2024 Feb;16(Suppl 1):S183-S185. doi: 10.4103/jpbs.jpbs_447_23. Epub 2024 Feb 29.
Acid etching enamel improves resin-enamel adhesion and adhesive characteristics, but has pros and cons. The effects of laser etching on the bonding of orthodontic brackets vary depending on the wavelength, power output, exposure duration, and energy delivered.
This study used a new 1064-nm diode laser to irradiate 30 freshly extracted human premolars. They were divided into three groups: group A, group B, and group C. Acid etching was used for 1 min to bond bracket to tooth surface, and Indian ink was used for 30 s. Group C uses acid etching for 1 min following 30 s of laser irradiation with Indian ink.
In comparison to the other groups, group C's acid etching after laser irradiation has considerably stronger bond strength ( = 0.05). Orthodontic brackets in group B exhibited considerably poorer shear bond strength than those in the other groups.
Acid etching improves the adhesion of orthodontic composite resin to human enamel following laser irradiation, but can interfere with the adhesion of composite resin.
酸蚀牙釉质可改善树脂与牙釉质的黏附力及黏附特性，但有其利弊。激光蚀刻对正畸托槽黏结的影响因波长、功率输出、照射持续时间和传递能量的不同而有所差异。
本研究使用新型1064纳米二极管激光照射30颗新鲜拔除的人类前磨牙。将其分为三组：A组、B组和C组。使用酸蚀1分钟将托槽黏结至牙面，并使用印度墨水30秒。C组在使用印度墨水进行30秒激光照射后再进行1分钟酸蚀。
与其他组相比，C组激光照射后进行酸蚀的黏结强度明显更强（P = 0.05）。B组正畸托槽的剪切黏结强度明显低于其他组。
激光照射后进行酸蚀可改善正畸复合树脂与人类牙釉质的黏附力，但可能会干扰复合树脂的黏附。
