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. 2012 Jul;4(3):157-63.
doi: 10.4103/0975-1483.100021.

Effect of a disintegration mechanism on wetting, water absorption, and disintegration time of orodispersible tablets

Rm Pabari  1 , Z Ramtoola
Affiliations

Effect of a disintegration mechanism on wetting, water absorption, and disintegration time of orodispersible tablets

Rm Pabari et al. J Young Pharm. 2012 Jul.

Abstract

The aim of this study was to evaluate the influence of disintegration mechanism of various types of disintegrants on the absorption ratio (AR), wetting time (WT), and disintegration time (DT) of orodispersible tablets (ODTs). ODTs were prepared by direct compression using mannitol as filler and disintegrants selected from a range of swellable, osmotic, and porous disintegrants. Tablets formed were characterized for their water AR, WT, and DT. The porosity and mechanical strength of the tablets were also measured. Results show that the DT of formulated ODTs was directly related to the WT and was a function of the disintegration mechanism of the disintegrant used. The lowest WT and DT were observed for tablets formulated using the osmotic disintegrant sodium citrate and these tablets also showed the lowest AR and porosity. The wetting and disintegration of tablets containing the highly swellable disintegrant, sodium starch glycollate, was slowest despite their high water AR and high tablet porosity. Rapid wetting and disintegration of ODTs were therefore not necessarily related to the porosity of the tablets.

Keywords: Absorption ratio; disintegration time; orodispersible tablets; porosity; wetting time.

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Conflict of interest statement

Conflict of Interest: None declared.

Figures

Figure 1
Figure 1
Appearance of FDTs formulated using various disintegrants (a and b) before wetting and (c–i) after wetting in water-containing rhodamine B.
Figure 2
Figure 2
Water absorption ratio of FDTs formulated using various disintegrants. Data expressed as mean ± SD (n = 6)
Figure 3
Figure 3
Correlation between water absorption ratio and wetting time of FDTs formulated using various types of disintegrants
Figure 4
Figure 4
Correlation between wetting and disintegration times of FDTs formulated using various types of disintegrants.
See this image and copyright information in PMC

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