The vali
The validity of pressure
indicating film for the measurement of occlusal forces transmitted to distal
extension removable partial denture made by dual impression technique.
Manal R Alammari, Lana A
Shinawi and Seham B Tayel
Oral and Maxillofacial Dep.
King Abdulaziz University Saudi Arabia
[email protected], [email protected], [email protected],
Abstract: The
study aimed to measure clinically the occlusal force, and the force transmitted
underneath two different distal extension removable partial dentures fabricated
according to different types of dual impression technique. Ten male patients with mandibular class I Kennedy classification
recruited, two metal frameworks were made for each (fluid wax impression (Denture A) and selected pressure
impression (Denture B). Both dentures were fabricated according to altered cast
technique, and then pressure indicating film (PIF) was used to record the
occlusal force as well as the force transmitted to supporting tissues beneath
each denture at the molar region. The processed (PIF) and color
calibration swatch were scanned. Photoshop program was used to get the color
density and to determine the amount of pressure. The force beneath denture (A)
was significantly lower than that measured in denture (B) at 5% level (P=0.008). High-localized
pressure transmission was observed in the PIF opposite molar region in the
distal extension RPD (B).The PIF enables to measure in vivo the
pressure distribution under distal extension base of RPD. Furthermore,
functional impression using fluid wax could be the impression of choice to
minimize load induced by RPD, it provides more even force distribution and
be more temperate to supporting oral tissues.
[Manal R Alammari, Lana A Shinawi and Seham B Tayel. The
validity of pressure indicating film for the measurement of occlusal forces
transmitted to distal extension removable partial denture made by dual
impression technique. J Am Sci 2012;8(10):367-372]. (ISSN:
1545-1003).http://www.jofamericanscience.org. 54
Keywords: Dual impression technique,
pressure-indicating film, bite force, RPD. Full Text 54
