Occ Flashcards
Draw Posselt’s Curve
- Retruded contact
- intercuspal position
- edge-to-edge
- max protrusion
- rest
- max hinge opening
- Max opening
8&9 Max lateral excursion
Teeth intercuspal position
Draw contact
Mx Palatal Cusps in Pits/MR of Md
Md Bu cusps in pits/MR Mx
\/\/\/\/\/\/\/\/\/\/
Class 1 C & M Angle Classification
LHS
-\/–\/\/
/--/\/\
Class 2 C & M Angle Classification
LHS
\/—\/\/
-/-–/\/\
Class 3 C & M Angle Classification
LHS
–\/—\/\/
/-–/\/\
Teeth Eruption Time
Primary
NXI
6mth
Teeth Eruption Time
Permanent
MAIN
6yrs, 9-10, 11-12, 12-13, 18-25
Facebow - cant in occ
Superior to dot made intercondylar axis
Lateral excursion:
Working & non-working side
Movement Right:
Working = right: rotate, down, forward, lateral non-working= left: orbiting, down, forward, medial
Articulator:
15o Bennet angle= non working side, sagittal plane
Balancing side:
mvmt FROM direction md moves (not to)
Retruded condylar axis:
both condyle in retrusion
Michigan Splint steps:
- Impression > alginate of both arches
- Transfer records > facebow
- Mount Cast on articulator (semi-adj)
- Block out undercuts
- Splint fabrication > Flat Occ= point contact for Bu cusp Md and premolars, - Canine and Incisor contact narrow ant ledge
>Ant ramp= guide canine/ant lateral (protrusive mvmt) - Intraoral adj> Firm and comfortable fit
>Occ table= even bilateral contact in retrusion and long centric
>Ant ramp= guidance w/o molar contact
-Pt Instruction = Sleep,OH,storage
-Review = long term mngmt, adjt after restorations
Draw scammons growth curve
200,100,0
Age B,10,20
Lymph, General, Neural
Boy growth:
Starts later, lasts longer, peaks higher
Butler Theory:
Md= Lat incisors
Mx=central
Scissor Bite
MxMd-MdMx (\/^.^\/)
Cross Bite
Md bu cusps more bu (mx bu cusp in pits/MRs of Md)
-\/\/-\/\/
/\/-–/\/\
M. of Mastication:
Masseter
Temporalis
Medial Pterygoid
Lateral Pterygoid
Masseter Origin and Insert:
Deep: Origin=Zygomatic Arch Insert=Upper Ramus Superficial: Origin=Zygomatic Process of Mx Insert=Lateral Md Ramus [Function: Elevate, protrude, ipsilateral excursion]
Temporalis Origin and Insert:
Origin= Parietal bone
Insert= Medial Coronoid process
[Function: Elevate, retrude, ipsilateral excursion]
Medial Pterygoid Origin and Insert:
Origin= Lateral Pterygoid plate of Sphenoid
Insert= Medial Md Angle
[Function: Elevate, protrude, Unilateral excursion]
Lateral Pterygoid Origin and Insert:
Superior: Origin= Greater wing of sphenoid Insert= Anterior capsule Articular disc/condyle Inferior: [Function: Elevate, retrude] Origin= lateral pterygoid plate Insert= Pterygoid fovea condyle [Function: depress, protrude, contralateral excursion]
Anterior Digastric motor innervated by:
V
44 Lat on opp tooth= what force is induced on bu 44?
Tensile
Ant 2/3 tongue
Chorda tympani
TW:
Att: Flat, well defined borders, shiny if active, matched facet on opposite arch, parallel striations
Abr: cross-hatch pattern, scratch marks
Ero: smooth, scooped out
Attrition:
Diurnal = centric
nocturnal= eccentric
Lateral and protrusive
GORD
stomach reflux
Cause: Mucosal erosion, Barrets oesophagus, adenocarcinoma
Day GORD:
High Saliva, heartburn (conscious trigger), primary (vol:swallowing) and secondary peristalsis active
Night GORD:
Low saliva, no heartburn, no swallowing, secondary peristalsis response.
GORD tmt:
remove cause, medical/GP, NG, defences (saliva, remin)
Defer rest until resolved
Age of calcification:
1=3mth 2=5mths Mx2=1yr 3=5mth 4=1.5-2.5yrs 5=2.5-3.4 6=birth 7=2.5-3.5 8=7-12yrs
How long to crowns take to develop?
4 years
6s=3yrs
By 8y.o crowns all done
How long for roots to develop?
I=4-5yrs CPM=7-8yrs 6s=6yrs By 9y.o 6s all done Every 1/4 progression + 1 yr to age
Hypodontia
Missing teeth
oligodontia
missing 6+ teeth
Hyperdontia
extra (supernumery) teeth
