Tooth Selection For Partial
Dr.Mohammad Al Sayed
Types of teeth
1.Acrylic denture base:
1.Good bond with denture base resin.
2.Easily recontoured and polished.
3.May be used with space limited.
4.Reduce wear of opposing restorations and
5.Reduce the stresses transferred to the ridge by
1.Law abrasion resistance.
2.May stain during use.
2.Porcelain denture teeth
1.Increases abrasion resistance.
2.Increased stain resistance.
1.Abrade the opposing natural and artificial teeth.
2.Cannot be used in close bite cases.
3.More susceptible to fracture.
4.Mechanical bond is required to denture base
5.Polishing of ground surfaces is difficult.
6.Clicking during function.
In anterior teeth is to be replaced metal packing
with porcelain or resin facing may be used. It is
usually used with metallic denture bases.
1.Metal packing increase strength.
2.Can be used when there is insufficient
interocclusal space to use resin denture teeth.
1.May exhibit flat appearance, lacking of depth.
2.Metal backing may affect shade.
3.Difficulty in fabrication of metal backing due to
occlusion and articulation.
It is an acrylic or porcelain teeth in the form of a tube have
a channel in its base to fit a post on the metal
1.Used as a single anterior or posterior tooth replacement,
where space is available , with good esthetics.
2.No need for flasking and processing the denture teeth.
The tube teeth are cemented to the metal posts.
1.It requires enough space mesiodistally and
2.It is used with metallic denture base, which cannot be
1.Can be used where space is limited for
posterior teeth replacement.
2.Increased resistance to fracture and
1.May be unaesthetic; acrylic or composite
veneer will improve it.
2.Difficult to adjust occlusion and
Factors affecting selection of RPD teeth:
1.The size, form and shade should resemble that
of the remaining natural teeth.
2.Amount of available space; artificial teeth are
placed within the available space
incisogingival and mesiodistal.
3.Mechanical properties; the anterior teeth
selection is affected by the opposing
occlusion, abrasion resistance, resistance to
fracture, bond strength to denture base and
ease of adjustment.
4.Cusp height of opposing teeth; cusp height of the
artificial teeth should be equal to or slightly
greater than the opposing teeth.
5.Condition of the supporting tissues in
distal extension base; if it is poor the
occlusal forces is reduced by:
a. Using a small teeth faciolingually.
b. Decreasing the number of posterior
c. Space teeth with diastimas.
d. Sharpening of the occlusal surface to
increase the masticatory efficiency.
e. Using acrylic teeth.