170 ANIMAL DENTISTRY. 



superior maxillary branch of the fifth cranial nerve near its 

 exit ivoni the infraorhital foramen. 



ist step. — Clip, shave and disinfect a liberal space at seat 

 of operation. 



2nd step. — ]\Iake a longitudinal (parallel to long axis of 

 skull) incision two inches long- through the skin and muscles 

 directly over the root of the affected tooth. 



3rd step. — Separate the soft tissues from the bone from 

 the incision to the gingival margin in the mouth. 



4th step. — Saw through the skull along the interdentium 

 on each side of the tooth ; then chisel the bone fiap loose 

 superiorly. 



5th step. — Pry the released plate of bone loose with the 

 chisel, and remove with the forceps. 



6th step. — Release and elevate the tooth by prying with 

 chisel and mallet. 



7th step. — Close incision with sutures and arrest hem- 

 orrhage by packing from wnthin the mouth. 



8th step. — Remove crown of opposing molar to prevent 

 packing of food into the cavity. 



After-care. — Remove the packing in twenty-four hours. 

 Irrigate daily with mild antiseptic solution, and keep in- 

 cision well protected with clay paste. 



(4) REMOVAL OF TEETH BY SPLITTING WITH CHISEL. 



This operation is indicated for the removal of the first 

 superior or first inferior molars when the crowns cannot be 

 held in the forceps. It is performed in the recumbent posi- 

 tion with the aid of a mouth speculum. Recently an inven- 

 tor has placed upon the market a tooth chisel shaped like 

 a horseshoe, that can be used to chisel any molar tooth. 

 Such an instrument is of service in splitting and removing 

 badly diseased fangs when major methods are unwarranted, 

 and to serve as a wedge to dislodge the remaining fangs of 



