An investigation of heat transfer to the implant-bone interface when drilling through a zirconia crown attached to a titanium or zirconia abutment

Numerical and Experimental Analyses on the Temperature Distribution in the Dental Implant Preparation Area when Using a Surgical Guide

“…The rise in temperature is an important problem during the preparation for dental implant placement, and has been investigated by several researchers and clinicians. Among researchers, experimental measurement is the predominant method adopted for the measurement of temperature increase . However, this experimental method only enables the temperature to be determined at several points, and these limited data cannot provide information related to the temperature distribution in the entire surgical field.…”

“…The system used for assessment of temperatures, constructed using thermocouples and a thermometer, requires calibration in ice water, boiling water, or other standard temperature environment, performed prior to delivery from the factory . In research investigating heat associated with dental implants, thermocouples are usually used directly for temperature measurement without calibration . Although errors in temperature measurements cannot be avoided, they can only affect the absolute value.…”

“…Among researchers, experimental measurement is the predominant method adopted for the measurement of temperature increase. [23][24][25] However, this experimental method only enables the temperature to be determined at several points, and these limited data cannot provide information related to the temperature distribution in the entire surgical field. In the present study, to determine the temperature increase at different locations in both the depth and radial directions, additional thermocouples were placed in the area assessed, providing more detailed information regarding the distribution of heat, compared with existing methods.…”

“…26 In research investigating heat associated with dental implants, thermocouples are usually used directly for temperature measurement without calibration. [23][24][25][26] Although errors in temperature measurements cannot be avoided, they can only affect the absolute value. The temperature increment, i.e., relative value, was used in the present study, and is unaffected by systematic errors relating to the measurement device.…”

Evaluation of Heat Transfer to the Implant-Bone Interface During Removal of Metal Copings Cemented onto Titanium Abutments

“…If the adhesive bond of the cement cannot be broken, the restoration can be removed by drilling through the restoration screw access channel or sectioning the restoration with a high-speed dental handpiece. 1 These interventions may generate frictional heat, and overheating the implant-bone interface along the implant body may result in bone necrosis leading to implant failure. 2 Studies have been published on the effect of zirconia crown removal on heat transfer to the implant-bone interface, but equivalent studies on metal crown removal have not.…”