Temperature rise of the post and on the root surface during ultrasonic post removal

Abstract

There were significant differences in temperature rise as a function of ultrasonic device, location on the tooth and cooling method utilized for post removal.

Effect of Dentin Thickness on Root Surface Temperature of Teeth Undergoing Ultrasonic Removal of Posts

“…When ultrasonically activating a post, care should be taken to ensure that it does not overheat (4 -7). Most authors recommend using a cooling water spray to minimize heat production in the post (3)(4)(5)(6)(7)(8).…”

Analysis of Temperature Rise and the Use of Coolants in the Dissipation of Ultrasonic Heat Buildup During Post Removal

“…Although caution is required in drawing conclusions about simultaneous use of coolants and instrumentation in this study because that was not tested, there is ample evidence to show that irrigation during post removal has a significant impact on the heat transfer to the external root (5)(6)(7)(8)(9)12). The data in this study show that there is a small statistical probability (8.4%) of damaging an individual tooth with as little as 20 seconds of continuous dry ultrasonic instrumentation.…”

“…As evidence accumulates in the literature for the considerable heat buildup and transfer that occur during ultrasonic vibration in the removal of posts, a number of studies during the past few years have cautioned the practitioner regarding the need for adequate coolant to counter heat buildup (5)(6)(7)(8)(9)12). There is far less evidence for how to reliably accomplish this goal in light of the clinical reality that many practitioners will use ultrasonic vibratory energy for various periods of time without any coolant.…”

“…To date, a small number of investigators and authors have cautioned that ultrasonic energy can be harmful because intense heat can be generated within a metallic object (5)(6)(7)(8)(9).…”

Osteotomías craneomaxilofaciales con sistemas ultrasónicos

“…La principal desventajas de la cirugía ortognática con sistema ultrasónico es el aumento del tiempo quirúrgico y control de la presión que exige el inserto sobre el hueso ya que el aumento en esta fase pueden aumentar la temperatura y dañar tejidos 22,28 , aunque Schütz et al 17 , ya mostraron que esta temperatura no sería relevante.…”