The document discusses occlusion and dynamic occlusion. It defines occlusion as the relationship between all components of the masticatory system during normal function, parafunction, and dysfunction. Dynamic occlusion refers to the occlusal contacts made as the mandible moves relative to the maxilla, guided by muscles and anterior/posterior guidance mechanisms. It describes different occlusal contacts that occur in centric position, protrusive position, and lateral positions on working and non-working sides.

3. Ahsen Saeed, 1010

4. INTRODUCTION

5. JABLONSKI (1982)
It is relationship between all components of masticatory
system in normal function, parafunction and dysfunction
including morphology, and functional features of contacting
surfaces of opposing teeth and restorations, occlusal trauma,
neuromuscular physiology, psychophysiological state and the
diagnosis, prevention and treatment of functional disorders.
DYNAMIC OCCLUSION (Davies and Gray)
Refers to the occlusal contacts that are made whilst
mandible is moving relative to the maxilla, the mandible being
guided by muscles of mastication and anterior and posterior
guidance mechanism of mandible, Anterior guidance of teeth
which may touch during eccentric movement of mandible,
posterior guidance, TMJ.

15. Flush terminal
Distal step
Mesial step

52. CENTRIC
POSITION
PROTRUSIVE
POSITION
LATERAL POSITION
Working Nonworking
Anterior and
posterior teeth
contact
All maxillary and
mandibular teeth
contact
Posterior
teeth make
contact
Posterior
teeth make
contact.

53. CENTRIC
POSITION
PROTRUSIVE
POSITION
LATERAL POSITION
Working Nonworking
Posterior tooth
make contact.
Anterior teeth may
or may not contact.
Canine and
posterior teeth
disclude .
Teeth contact
(mostly
desirable
canine,
premolar,
mesiobuccal
cusp of 1st
molar)
No tooth
contacts.

55. CENTRIC POSITION PROTRUSIVE
POSITION
LATERAL POSITION
Working Nonworking
Only posterior tooth
make contact.
Anterior tooth have a
space of minimum 30
microns.
Canine and posterior
teeth disclude .
Mesial inclines of
mandibular first
premolar buccal cusps
may contact.
Maxillary
canine
guide the
mandible.
Posterior
teeth
disclude.
No tooth
contacts.

56. In lateral position, working side In protrusive position

62. ANY