Effects of the temperature of cooling water during high-speed and ultrahigh-speed tooth preparation

Influence of Water Cooling on Root Surface Temperature Generated During Post Space Preparation

“…Water cooling, which is used by dentists during various procedures, is mandatory during high-speed tooth preparation, ultrasonic scaling, or ultrasonic removal of posts (9)(10)(11)(12)(13)(14)(15). We propose that water cooling should be used during post space preparation, because it significantly decreases the temperature on the external surface of the root and enhances the safety of the procedure.…”

Irrigation rates and handpieces used in prosthodontic and operative dentistry: Results of a survey of North American dental school teaching

“…It has been shown that the temperature of the cooling water during high-speed and ultra-highspeed tooth preparation affects the pulpal temperature, with injury to the pulp occurring at water temperatures above 34°C. 6 Other work supported this conclusion, reporting that no cooling effects were found with water temperatures in the range of 38°C to 43°C. 7 It was also noted that intermittent tooth cutting and a coolant water temperature of 30°C to 32°C were beneficial to the tooth.…”

“…Of these factors, the type of dental bur, the handpiece speed, the applied load, and the type of coolant and its flow rate all strongly affect the cutting efficiency 1,2,14‐18 . Despite their clinical importance, specific information on these factors in the literature is limited, although undergraduate texts do allude to the importance of bur selection, handpiece speed, and coolants in dental cutting, notably with regard to conserving pulpal health 6‐8 …”

“…The literature clearly indicates that water cooling during cutting procedures is mandatory to protect pulpal health, 1‐7 but the survey responses to questions on water coolant flow rates suggest that North American dental schools do not emphasize the importance of water cooling. In fact, less than 1 in 5 (18.9%) of North American schools make specific recommendations on coolant flow rates.…”

“…The principle of water cooling during cutting procedures has been advocated for decades, 1‐5 and adherence to this recommendation prevents partial or complete necrosis of the pulpal tissues during or subsequent to preparative procedures. It has been shown that the temperature of the cooling water during high‐speed and ultra‐highspeed tooth preparation affects the pulpal temperature, with injury to the pulp occurring at water temperatures above 34°C 6 . Other work supported this conclusion, reporting that no cooling effects were found with water temperatures in the range of 38°C to 43°C 7 .…”