Editorial Type:
Article Category: Other
 | 
Online Publication Date: 01 Jun 2015

Implant Fixture Heat Transfer During Abutment Preparation

BDS, MSc,
BDS, MSc,
BDS, PhD,
DDS, MSc, PhD, and
BDentSc, MA, PhD
Page Range: 264 – 267
DOI: 10.1563/AAID-JOI-D-13-00056
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The purpose of the study was to evaluate the effect of water flow rate on the heat transmission in implants during abutment preparation using a diamond bur in a high-speed dental turbine. Titanium-alloy abutments (n = 32) were connected to a titanium-alloy implant embedded in an acrylic resin within a water bath at a controlled temperature of 37°C. The specimens were equally distributed into 2 groups (16 each) according to the water flow rate used during the preparation phase. Group 1 had a water flow rate of 24 mL/min, and group 2 had a water flow rate of 40 mL/min. Each abutment was prepared in the axial plane for 1 minute and in the occlusal plane for 1 minute with a coarse tapered diamond bur using a high-speed dental handpiece. Thermocouples embedded at the cervix of the implant surface were used to record the temperature of heat transmission from the abutment preparation. Heat generation was measured at 3 distinct times (immediately and 30 seconds and 60 seconds after the end of preparation). Statistical analyses were carried out using 2-way analysis of variance and the Student t test. Water flow rates (24 mL vs 40 mL) and time interval had no statistically significant effect on the implant's temperature change during the abutment preparation stage (P = .431 and P = .064, respectively). Increasing the water flow rate from 24 to 40 mL/min had no influence on the temperature of the implant fixture recorded during preparation of the abutment.

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Figure.

Experimental setup for temperature measurements through implant fixture during abutment preparation. A indicates implant abutment; R, rubber dam; W, water bath; I, implant embedded in the Teflon casing; T, thermocouple; S, Teflon casing; B, acrylic block


Contributor Notes

Corresponding author, e-mail: drimplant_prostho@yahoo.com
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