LA overview Flashcards

Question

what do you need for LA?

Answer 1

syringe handle and bung syringe barrel cartridge expiry date & batch

Answer 2

infiltration- short 25mm | block - long 35mm

Answer 3

``` collect syringe handle and needle collect selected LA cartridge unpack everything record details for decontamination make up syringe handle attach rubber bung -broader end toward handle load cartridge in needle barrel connect syringe handle and LA needle with cartridge -bung end into needle click in place, pull to check prepare needle for use -pull back safety sheath, point away, click sheath into place remove disposable cap by pulling away from needle make needle safe by re-sheathing -1 click re-use, 2 clicks lock ```

Answer 4

``` check medical history position in chair dry mucosa- guaze/cotton wool apply topical for 1-2 mins -pea size on cotton wool ```

Answer 5

reduction of tension

Answer 6

keep needle out of view

Answer 7

``` stretch mucosa puncture quickly position needle tip at target point bevel towards bone aspirate inject slowly >30s ```

Answer 8

needle length influences discomfort needle diameter influences discomfort temperature influences discomfort

Answer 9

reflection of mucosa below apex of tooth

Answer 10

pulpal anaesthesia limited to 1 or 2 teeth soft tissue supra-periosteal

Answer 11

infection may limit effect | dense bone may limit effect

Answer 12

high success rate technically easy atraumatic

Answer 13

``` stretch cheek puncture mucosa with correct bevel of needle - open towards bone advance needle until over apex of tooth if contact bone, withdraw slightly aspirate ```

Answer 14

``` remove syringe from mouth slide sheath down to 1st click replace cartridge if need further injections massage local into tissues wait 2 mins test by sticking probe down PDL ```

Answer 15

short needle penetrate 5-10mm palatal to centre of crown apply pressure behind injection site insert needle at 45 angle to injection site w/ bevel angled toward soft tissue advance needle, slowly deposit as soft tissue is penetrated advance needle until contact bone depth of penetration few mm 0.2-0.4ml needed blanching tissue immediately

Answer 16

posterior portion of hard palate and overlying soft tissues as far as 1st premolar and medially to midline

Answer 17

anterior portion of hard palate (soft & hard) | bilaterally from mesial of right 1st premolar to mesial of left 1st premolar

Answer 18

``` take handle off 2 clicks orange box cartridge blue lock bin after use handle sterilised bung clinical waste ```

Answer 19

foramen | should be between apices of lower premolars

Answer 20

``` coronoid notch of mandibular ramus posterior border of mandible pterygomandibular raphe lower premolar teeth of opposite side site = region of mandibular formamen ```

Answer 21

coronoid notch

Answer 22

posterior border of mandible

Answer 23

increased onset time increased lingual nerve injury no change in intravascular injection

Answer 24

halfway between coronoid notch and raphe

Answer 25

thumb placed at anterior notch needle entry junction of buccal pad of fat/pterygomandibular raphe syringe lies over contra lateral 5-6 advance to bony contact, withdraw 1mm -1mm needle visible if no bony contact reposition distally if bony contact too soon, reposition mesially when in correct position withdraw from bony contact aspirate inject slowly -for lingual anaesthesia withdraw when last 1/3 solution

Answer 26

``` ask px how it feels -rubbery -numb -tingly -swollen/fat IDB tongue & lower lip to midline should feel different ability to sense pressure will remain test mucosa with probe ```