Dentaltown August 2014 - (Page 62)
implant
feature
C
Course of the Nerve
The cranial nerve V (trigeminal nerve) provides sensory
innervation to the face. The second division, the maxillary
nerve (V 2 ), exits the skull from the foramen rotundum.
After giving off numerous branches, the maxillary nerve
eventually enters the face through the infra-orbital canal
where it ends at the infra-orbital nerve. The infra-orbital
nerve supplies sensory branches to the lower eyelid, the side
of the nose, and the upper lip including the anterior part of
the alveolar ridge at the side of innervation.
Indications include wound closure, pain relief and anesthesia for debridement. Contraindications include any allergy
or sensitivity to the anesthetic agent, evident of infection at
the injection site, distortion of anatomical landmarks and
uncooperative patients. One disadvantage to the procedure
is that the technique is performed by blind palpation of the
infra-orbital foramen.
Discussion
The majority of local anesthetic agents share the same
basic chemical structure, which consists of an aromatic ring,
linked to an intermediate chain. (The intermediate chain
between the aromatic and hydrophilic segments is either an
ester or an amide.) This is linked to a hydrophilic amine
segment as seen in figure 1 .
The chemical structure of this intermediate group classifies the agent into the amide group or the ester group. This
structural difference determines the pathway by which the
agent is metabolized and its allergic potential. The toxicities associated with local anesthetics are cardiovascular
and neurologic. Methemoglobinemia can occur with use of
these agents, though it is rarely clinically significant.
continued on page 64
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AUGUST 2014 » dentaltown.com
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Table of Contents for the Digital Edition of Dentaltown August 2014
Dentaltown.com Highlights
Howard Speaks: And the Band Played On... Again
Professional Courtesy: You’re Doing it Wrong
Continuing Education Update
Overtreatment
All on 7, but Only 6 Used for Provisional
Needle Stick Protocol
Shade Matching Single Units
The D-Word
Continuing Education: I Like Big Abutments (and I Cannot Lie)
Guided Bone Leveling for Optimum Implant Results
Application of Extra-oral Infraorbital Nerve Block in Implant for Upper Anterior Region
Product Profile: MIS Implants
Drs. Dennis and Marie Stiles
Design Solutions for Restorative Artistry
Imaging in Missing Laterals Case
Maximizing Effi ciency and Flexibility with an Open-architecture Scanner
You Should Know: Mouth Monsters
You Should Know: GumChucks
Continuing Education: Emergency Medications Every Dentist Should Know
Ad Index
New Products
Industry News
Perio Reports
Perio Program Series Step 4: Implement the Plan
Dentally Incorrect
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