Coupland's elevators

Coupland's elevators (also known as chisels)[1][2] are instruments commonly used for dental extraction.

They are used in sets of three each of increasing size and are used to split multi-rooted teeth and are inserted between the bone and tooth roots and rotated to elevate them out of the sockets.

[3] The instruments were designed by Dr Douglas C W Coupland who qualified as a dental surgeon in Toronto in 1922 and spent most of his career practising dentistry in Ottawa where he specialised in dental extraction.

[4] Coupland designed the instruments in the 1920s; they were manufactured by the Hu-Friedy company and sold from the early 1930s initially as sets of eight or twelve which were later reduced to three.

[2] Coupland also designed a set of dental suckers with interchangeable tips.