Regional anesthesia of the infraorbital and inferior alveolar nerves during noninvasive tooth pulp stimulation in halothane-anesthetized dogs

Marjorie E. Gross From the Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211.

Search for other papers by Marjorie E. Gross in
Current site
Google Scholar
PubMed
Close
 DVM, MS
,
Eric R. Pope From the Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211.

Search for other papers by Eric R. Pope in
Current site
Google Scholar
PubMed
Close
 DVM, MS
,
Dennis O’Brien From the Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211.

Search for other papers by Dennis O’Brien in
Current site
Google Scholar
PubMed
Close
 DVM, PhD
,
J. R. Dodam From the Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211.

Search for other papers by J. R. Dodam in
Current site
Google Scholar
PubMed
Close
 DVM, PhD
, and
Jennifer Polkow-Haight From the Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211.

Search for other papers by Jennifer Polkow-Haight in
Current site
Google Scholar
PubMed
Close

Click on author name to view affiliation information

Objective

To document that regional anesthesia of the infraorbital and inferior alveolar nerves would abolish reflex-evoked muscle action potentials (REMP) in the digastricus muscle during noninvasive stimulation of tooth pulp in halothane-anesthetized dogs.

Design

Prospective study.

Animals

9 healthy female dogs between 2 and 6 years old.

Procedure

Dogs were anesthetized using halothane. An alligator clip anodal electrode was attached to the tooth to be stimulated, and a platinum needle cathodal electrode was inserted in adjacent gingival mucosa. The cathodal and anodal electrodes were moved to the left upper and lower canine, fourth premolar, and first molar teeth for sequential stimulation. Baseline recording of REMP was made for each tooth. Catheters were inserted percutaneously in the infraorbital and mandibular canals. Saline (0.9% NaCl) solution was injected at each catheterized site in 3 control dogs, and chloroprocaine hydrochloride was injected at each catheterized site in 6 test dogs. Each tooth was stimulated every 10 minutes for 90 minutes (test dogs) or every 10 minutes for 30 minutes and at 90 minutes (control dogs), and REMP was recorded.

Results

REMP was abolished within 10 minutes in all test dogs, except during stimulation of the lower first molar in 1 dog. In 4 dogs, duration of blockade was less than 90 minutes. The REMP was not restored within 90 minutes for the upper teeth in 1 dog and within 2 hours for all teeth in another dog. At 24 hours, REMP was restored for all teeth except the lower left canine in 1 dog. The REMP was restored for the lower left canine in that dog at 96 hours. The REMP was not abolished at any time in control dogs.

Clinical Implications

Regional anesthesia of the infraorbital and inferior alveolar nerves may effectively provide analgesia for dental procedures in dogs. (J Am Vet Med Assoc 1997;211:1403–1405)

Objective

To document that regional anesthesia of the infraorbital and inferior alveolar nerves would abolish reflex-evoked muscle action potentials (REMP) in the digastricus muscle during noninvasive stimulation of tooth pulp in halothane-anesthetized dogs.

Design

Prospective study.

Animals

9 healthy female dogs between 2 and 6 years old.

Procedure

Dogs were anesthetized using halothane. An alligator clip anodal electrode was attached to the tooth to be stimulated, and a platinum needle cathodal electrode was inserted in adjacent gingival mucosa. The cathodal and anodal electrodes were moved to the left upper and lower canine, fourth premolar, and first molar teeth for sequential stimulation. Baseline recording of REMP was made for each tooth. Catheters were inserted percutaneously in the infraorbital and mandibular canals. Saline (0.9% NaCl) solution was injected at each catheterized site in 3 control dogs, and chloroprocaine hydrochloride was injected at each catheterized site in 6 test dogs. Each tooth was stimulated every 10 minutes for 90 minutes (test dogs) or every 10 minutes for 30 minutes and at 90 minutes (control dogs), and REMP was recorded.

Results

REMP was abolished within 10 minutes in all test dogs, except during stimulation of the lower first molar in 1 dog. In 4 dogs, duration of blockade was less than 90 minutes. The REMP was not restored within 90 minutes for the upper teeth in 1 dog and within 2 hours for all teeth in another dog. At 24 hours, REMP was restored for all teeth except the lower left canine in 1 dog. The REMP was restored for the lower left canine in that dog at 96 hours. The REMP was not abolished at any time in control dogs.

Clinical Implications

Regional anesthesia of the infraorbital and inferior alveolar nerves may effectively provide analgesia for dental procedures in dogs. (J Am Vet Med Assoc 1997;211:1403–1405)

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 398 398 79
PDF Downloads 39 39 7
Advertisement