title: Tunneling under the digastricus muscle increases salivary duct exposure and completeness of excision in mandibular and sublingual sialoadenectomy in dogs.
abstract: OBJECTIVE
  To document the extent of rostral salivary duct and glandular tissue excision achieved through a conventional lateral approach before and after tunneling under the digastricus muscle.
  
  
  METHODS
  Experimental cadaveric study.
  
  
  METHODS
  Dog cadavers (n = 8).
  
  
  METHODS
  Bilateral mandibular and sublingual sialoadenectomy was performed in 8 cadavers using a conventional lateral approach and the point of proposed salivary duct transection was marked with Evans blue dye. Remaining salivary duct was then tunneled under the digastricus muscle and dissection continued rostrally. The most rostral point of the gland/duct complex was marked before transection of the salivary duct. Once removed, the distance between the 2 marks was measured and recorded. Completeness of glandular tissue excision was confirmed by dissection and gross examination.
  
  
  RESULTS
  The tunneling technique improved rostral exposure and increased the median (IQR) length of salivary duct excision by 1.8 (0.35) cm. Residual polystomatic sublingual salivary tissue remained in all cadavers after simulated resection without tunneling under the digastricus muscle. After tunneling, complete removal of rostral salivary tissue was achieved in 13 of 15 procedures.
  
  
  CONCLUSIONS
  Tunneling under the digastricus muscle increases the length of rostral salivary duct and glandular tissue that can be removed through a conventional lateral approach.
authors: Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, OH 43210, USA.
authors: Andrew
authors: A
authors: Marsh
authors: Christopher
authors: C
authors: Adin
mesh_terms: D000818:Animals; D004285:Dogs / Q000601:surgery*; D005260:Female; D008297:Male; D008334:Mandible / Q000601:surgery; D009060:Mouth Floor / Q000601:surgery; D009334:Neck Muscles / Q000601:surgery*; D018987:Salivary Ducts / Q000601:surgery*; D012469:Salivary Glands / Q000601:surgery*