Oral surgery retractor with V shaped notch is:

 # Oral surgery retractor with V shaped notch is:

A. Obwegeser retractor

B. Langenbeck retractor

C. Minnesota retractor

D. Austin retractor

The correct answer is A. Obwegeser retractor.

Obwegeser Coronoid/ Ramus Retractor: 

• The retractor is similar to the Langenbeck's retractor except that the edge of the retracting blade is forked, forming a 'V' shaped notch, so as to engage the anterior border of the ramus of the mandible and aid in good tissue retraction. 

• Uses: - To retract the soft tissues along the anterior border of the ramus during sagittal split or ramus osteotomy - To retract the tissues from the anterior border of the ramus during coronoidectomy procedures. 

Langenbeck's Retractor:

 It has a long handle and an 'L' shaped blade. This retractor is most commonly used in oral surgery. It is available in different sizes with various blade widths. The instrument can be single or double ended. It is used to retract the soft tissues, incision edges, to allow view of the deeper structures. 

Austin's Retractor: It is a short right-angled retractor used for retracting the cheek, tongue and the mucoperiosteal flaps.