Robert Nasmyth FRCSEd, FRSE (7 November 1791 – 12 May 1870) was a Scottish dental surgeon from Edinburgh who was Surgeon-Dentist to Queen Victoria in Scotland.

This was used for maxillary reconstruction after tumour excision and was "devised by my friend Mr. Nasmyth of Edinburgh... to have metal caps fitted to the teeth of the upper and lower jaws soldered or riveted together at their bases which shall have the effect when applied of preventing the remaining fragment of bone and chin being dragged to the opposite side".

Dr. Henry A Dewar, a Boston dentist wrote to Nasmyth asking that he provide details of the technique which he used to fill cavities.

Nasmyth gave a detailed reply on 5 August 1838 and this was published in the Boston Medical and Surgical Journal later that year.

[12] In the introduction to Nasmyth's article, the editor writes that it describes "the important branch of filling teeth in which many decided improvements have been made, which are as yet but little known in this country or in Europe...".

[12] Nasmyth's reputation with the technique of gold filling and his closeness to the Goodsir family has contributed to speculation about the origin of a gold dental filling in skeletal remains found in King William Island in Arctic Canada and believed to be those of a member of the ill-fated Franklin expedition.

[18] In 1842, he was elected a Fellow of the Royal Society of Edinburgh, his proposer being George Augustus Borthwick.

He had been brought up by an uncle, whose bookbinding business he entered, but when that failed became, at the age of 33, a dental apprentice to his younger brother Robert.

Moving to London, he qualified as a Member of the Royal College of Surgeons (RCS), set up practice and was appointed Surgeon-Dentist to the Queen.

5, Charlotte Square, regarded as one of the most prestigious addresses in Edinburgh,[24] close to his colleague and friend from student days Professor James Syme who lived at No.