Module 14 Flashcards
what is the deposition of local anesthetic solution in to the cancellous bone that supports the teeth
intraosseous anesthesia
what are the 3 types of intraosseous anesthesia
- periodontal ligament injection
- intraseptal injection
- intraosseous injection
what injection involves anesthetizing the terminal nerve endings at site and at apex of the tooth, along with bone, soft tissue, and apical and pulpal tissues in the area of injection
periodontal ligament injection
what are the indications for periodontal ligament injection
- pulpal anesthesia of one to two teeth
- to avoid bilateral IANB
- patients who dislike soft tissue anesthesia
- adjunctive technique after nerve block if partial anesthesia is present
what are the contraindications of periodontal ligament injection
- infection or inflammation at site
- patients who require numb sensation to be at ease
what are the advantages of periodontal ligament injections
- no anesthesia to lip, tongue, other soft tissues
- minimum dose of LA necessary (0.2 mL per root)
- rapid onset
- less traumatic than conventional block injections
what are the disadvantages of periodontal ligament injections
- leakage of LA in patient’s mouth / bad taste
- excessive pressure or overly rapid injection could break glass carpule
- excessive pressure can cause tissue damage
- potential for extrusion exists if too much pressure or volume are used
what needle is used for the periodontal ligament injection
27 short
where does insertion occur in the periodontal ligament injection
along long axis of tooth to be treated, interproximally near the roots
what is the target area of the periodontal ligament injection
depth of gingival sulcus, weding the needle between the root and interproximal bone
what is the specific technique for the periodontal ligament injection
- bevel toward root
- advance apically until resistance
- deposit 0.2 mL at minimum of 20 sec
what injection anesthetizes the terminal nerve endings at the site of injection and adjacent to hard and soft tissues
intraseptal injections
what are the indications for intraseptal injections
- when pain and heme control are needed for soft tissue and osseous periodontal treatment
- some minor restorative procedures on mandibular teeth
what are contraindications of intraseptal injections
infection or severe inflammation at injection site
what are the advantages of intraseptal injections
- no anesthesia of lip, tongue
- minimum dose of LA necessary
- minimized bleeding during surgical procedure
- atraumatic
- useful on periodontally involved teeth (avoids infected pockets)
what are the disadvantages of intraseptal injections
- leakage of LA in patient’s mouth / bad taste
- multiple tissue punctures may be necessary
- short pulpal anesthesia
what needle is used in intraseptal injections
27 short
where does insertion occur in the intraseptal injection
center of interdental papilla adjacent to the tooth being treated
what is the target area of intraseptal injections
center of interdental papilla
what is the specific technique for intraseptal injections
- bevel toward apex
- penetrate at 45 degree angle to long axis of tooth until contact with bone
- deposit 0.4 ml in no less than 20 sec
PDL and Intraseptal injections both provide the same amount of pulpal anesthesia. PDL and Intraseptal injections both require slow deposition of anesthetic solution, at a minimum of 20 sec.
a - the first statement is TRUE, the second statement is FALSE
b - the first statement is FLASE, the second statement is TRUE
c - both statements are TRUE
d - both statements are FALSE
b - the first statement is FALSE, the second statemEnt is TRUE
PDL injections provide much more pulpal anesthesia than the inraseptal injections
what injection involves anesthetizing the terminal nerve endings at the site of injection and in adjacent hard and soft tissues, along with bone, soft tissue, and root structure in the area of the injection
intaosseous injection
what is the indication for intraosseous injections
pain control for treatment on single or multiple teeth in a quadrant
what is the contraindication of intraosseous injections
infection or severe inflammation at injection site
what are the advantages of intraosseous injections
- no anesthesia of lip, tongue
- minimum dose of LA necessary
- immediate onset
what are the disadvantages of intraosseous injections
- requires specidal device (X-Tip or Stabident system)
- high incidence of heart palpitations when using LA w/ vasoconstrictor (plain recommended, if must use vaso then 1:200,000 epi)
what is the specific technique of intraosseous injections
- infiltate first
- perforate cortical plate 2 mm apical to gingival margin at area of interdental papilla, distal to tooth being treated (AVOID MENTAL FORAMEN)
- hold guide sleeve in place as drill is withdrawn, sleeve remains in place w/ adequate anesthesia
- injection delivered via sleeve w/ regular local anesthetic syringe
- dosage varies
what type of injection involves anesthetizing the terminal nerve endings at the site of injection in the pulp chamber and canals of the involved tooth
intrapulpal injection
what are the indications for intrapulpal injections
when pain control is necessary for removal of pulp tissue or other endodontic treatment in the absence of adequate anesthesia after repeated attempts with other techniques
what are the contraindications for intrapulpal injections
NONE
what are the advantages of intrapulpal injections
- no anesthesia of lip, tongue
- minimum volume of LA
- immediate onset
what are the disadvantages of intrapulpal injections
- traumatic (often associated w/ brief, intense pain)
- short duration (15-20 min)
- short pulpal anesthesia
what needle is used for the intrapulpal injection
25 or 27 short
what is the specific technique of intrapulpal injections
- insert needle into pulp chamber
- insert firmly for pharmacologic and pressure anesthesia
- deposit 0.2 - 0.3 mL
