304 OPERATION OF RlSODONTRYrf. 



Mr. T. A. Rogers read the following paper from J. Bellisario, 

 D.U.S.:— 



147, Philip Street, Sydney, N.S.W., 

 July 20, 1860. 



Mr. President and Gentlemen, — I wish to 

 direct the attention of the society to the value of 

 the late Dr. HuUihen's operation of risodontrypy 

 in the treatment of the dental pulp in certain 

 stages. It is particularly applicable to those cases 

 in which the pulp has been under treatment, 

 capped, and permanently filled; and I have 

 selected from my note-book one of many inter- 

 esting cases to illustrate the practice. 



I was consulted by a gentleman on the 8th of 

 January, 1859, about an anterior lower molar; it 

 was diseased on the posterior approximating sur- 

 face, the pulp exposed at a point, and he had 

 experienced two or three slight attacks of tooth- 

 ache. I removed perfectly the carious parts of 

 the sides of the cavity, leaving that in contiguity 

 to the pulp undisturbed ; filled the cavity with 

 cotton wool, for the purpose of seeing in what 

 condition the pulp was, and directed the patient 

 to see me the following day. 



On removing the cotton, it was much dis- 

 coloured on that part which came in contact with 

 the pulp cavity, and slightly offensive. I used 

 astringents and stimulants for five weeks, three 

 times a day, before getting the discharge under; 



