OCCLUSION
Figure 8 The interferences between the occlusal
slopes of lateral teeth (red lines) which force the
mandible to move towards the left side
Figure 10 The slopes of lateral teeth to be reduced on
balancing and working arches.(red dotted lines) on the
left laterotrusive path of the mandible
achieved by dental prosthesis or orthodontic
devices (Gupta et al, 2012). Occlusal adjustments
techniques can be applied on natural teeth or on
the teeth of fixed prostheses applied on the natural
or implant abutments. The purpose of occlusal
adjustments is to obtain a functional occlusion, not
an ideal one. The ideal occlusion is not a practical
functional occlusion; it is a theoretical, fictional
one. The occlusal equilibration in the case of
complete dentures is made somehow differently
from the one made on natural dental arches. It
is coordinated according to the Gysi‘s occlusal
prosthetic concept: occlusal support on at least
three points on all functional paths: right, left
sideways and protrusive.
Objectives
The objectives of the oclusal equilibration are:
- To improve the functional mandibulo-maxillary
interrelations and of physiologic dento-periodontal
stimuli.
- To remove occlusal trigger factors and muscle
spasms joined with pain and functional discomfort.
- To remove the pain dysfunction TMJ syndrome,
The steadiness of an equilibrated occlusal function
before any prosthetic treatment,
- The used dental crowns can be contoured with a
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Figure 9 The interferences between occlusal slopes
of lateral teeth (red lines) which force the mandible to
move forward on the sagittal closing arch
Figure 11 The slopes of lateral teeth to be reduced
on the balancing and working arches (red dotted
lines) on the left laterotrusive path of the mandible
Figure 12 The cusps crests of the lateral teeth
to be reduced (red points) on the protrusive
movement path of the mandible
view to improve masticatory efficacy and periodontal
tissues protection,
- The stabilization of therapeutical results of orthodontic
treatments.
The main targets of occlusal adjustments
A. Primary occlusal trauma which affects odontal
tissues: teeth and dental pulp, periodontium,
temporomandibular joints, neuromuscular system,
oral mucosa.
B. Secondary occlusal trauma which affects
physiological teeth mobility aa well as hard and soft
support tissues of the teeth.
C. Generally occlusal adjustments are suggested to be
STOMA.EDUJ (2015) 2 (1)