Accurate registration of occlusal vertical dimension
is very important for the fabrication of complete denture.1 Increased or decreased vertical can result in aesthetic problems, speech difficulties, muscular discomfort and temporomandibular joints problems.14 Many techniques of recording occlusal vertical dimension
has been documented in dental literature but unfortunately none is accurate.15-22 The present study was carried out on the relatively stable landmarks to the find out an accurate method of recording occlusal vertical dimension
in edentulous subjects.
However, the method of the gothic arch tracings does not guarantee the correct occlusal vertical dimension
. Radiographic evaluation of the TMJ (in centric relation and in maximal opening) is necessary for determining the proper occlusal vertical dimension
in both methods (Figures 17-19).
Occlusal vertical dimension
is not exactly the same as the lower facial height because denture bases/flanges do not reach the inferior border of the mandible.
Influence of occlusal vertical dimension
on the masticatory performance during chewing with maxillary splints.
Okeson, "Does altering the occlusal vertical dimension
produce temporomandibular disorders?
When no pre-extraction records are available, one cannot even determine accurately, as a starting point, the position the mandible should occupy to restore the occlusal vertical dimension
The AvaDent denture technique uses an Anatomical Measuring Device (AMD) that can be adjusted to the desired occlusal vertical dimension
. This AMD maintains this dimension while centric relation is recorded using the incorporated gothic arch tracing plate and stylus.
Eating difficulties may result from unstable dentures, incorrect occlusal vertical dimension
or blunt teeth which results from excessive abrasion of occlusal surface as a result of adjusted occlusion or prolonged wear.
The two major factors that concern patients with extensive tooth surface loss are increasing occlusal vertical dimension
and esthetic modification to the present situation where some patients cannot visualize the new situation even when seen on animated software or modified photographs for illustrated purposes
Also, horizontal bone loss in posterior mandibular area, super eruption of teeth #19, and 30, loss of occlusal vertical dimension
, underdeveloped alveolar ridges, and bilateral infe- rior expansion of the maxillary sinus were noticed (Figure 3, and 4).
Brzoza and coworkers9 had also carried out a similar study to predict occlusal vertical dimension
through cephalometery in edentulous patients.