Buck Method.

Dieffenbach Method.—Dieffenbach’s method is very similar to the above, but is applicable only to cases where the entire lower lip is involved and is extirpated (see [Fig. 218]). The wound is sutured as in [Fig. 219]. The secondary wounds are either sutured as in Buck’s method or they are covered immediately by Thiersch grafts (author’s method).

Dieffenbach allowed these secondary wounds to heal by granulation.

Fig. 218. Fig. 219.

Dieffenbach Method.

Jäsche Method.—Jäsche’s method is to be preferred to that of the foregoing author. After a cuneiform excision of the defect he adds two curved incisions extending downward at either side to insure mobility of the parts, as shown in [Fig. 220].

In bringing the wound together, as shown in [Fig. 221], he overcomes the large secondary defects of the operation last considered by suturing the skin margins.