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Comparative Study
. 2017 Jul 10:27:185.
doi: 10.11604/pamj.2017.27.185.9098. eCollection 2017.

Evaluation of wetting ability of five new saliva substitutes on heat-polymerized acrylic resin for retention of complete dentures in dry mouth patients: a comparative study

Abdul Habeeb Bin Mohsin  1 , Varalakshmi Reddy  2 , Praveen Kumar  2 , Jeevan Raj  2 , Siva Santosh Babu  2
Affiliations
Comparative Study

Evaluation of wetting ability of five new saliva substitutes on heat-polymerized acrylic resin for retention of complete dentures in dry mouth patients: a comparative study

Abdul Habeeb Bin Mohsin et al. Pan Afr Med J. .

Abstract

Introduction: The aim of this study was to evaluate & compare the wetting ability of five saliva substitutes & distilled water on heat-polymerized acrylic resin. Contact angle of the saliva substitute on denture base can be taken as an indicator of wettability. Good wetting of heat-polymerized acrylic resin is critical for optimum retention of complete dentures.

Methods: Two hundred & forty samples of heat-polymerized acrylic resin were fabricated using conventional method. 240 samples divided into 6 groups with 40 samples in each group. Advancing & Receding contact angles were measured using Contact Angle Goniometer & DSA4 software analysis.

Results: Anova test was carried out to test the significance in difference of contact angle values in the six groups. The mean of advancing angle values & mean of receding angle values of all the six groups has shown statistically significant difference between the groups. The mean of angle of hysteresis values of all the six groups are statistically not significant between the groups. A multiple comparison using Bonferroni's test was carried out to verify the significance of difference between the contact angles in a pair of groups. Statistically significant difference was seen when Aqwet (Group II) was compared to Distilled water (Group I), Wet Mouth (Group III), E-Saliva (Group IV), Biotene (Group V), and Moi-Stir (Group VI).

Conclusion: The contact angles of five saliva substitutes and distilled water were measured and compared. Group II (AQWET) has the lowest advancing and receding contact angle values and the highest angle of hysteresis on heat-polymerized acrylic resin. Based on contact angle values, Group II (AQWET) has the best wetting ability on heat-cured acrylic resins. The ability of saliva to wet the denture surface is one of the most important properties for complete denture retention in dry mouth cases.

Keywords: Wettability; denture; retention; saliva; xerostomia.

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Figures

Figure 1
Figure 1
Five salivary substitutes & distilled water
Figure 2
Figure 2
Sample size and distribution
Figure 3
Figure 3
Sample preparation: (A) cutting of wax sample using carver; (B) wax sample measuring 30x30mm; (C) measuring thickness of wax sample using wax gauge; (D) samples stored in air-tight container
Figure 4
Figure 4
240 heat-cure samples divided into 6 groups
Figure 5
Figure 5
Advancing and receding contact angles were measured using contact angle goniometer DSA25 and software DSA4
Figure 6
Figure 6
Measurement of advancing and receding contact angles on the sample using goniometer syringe
Figure 7
Figure 7
Illustration of advancing and receding contact angles: (A) advancing angle; (B) receding angle
See this image and copyright information in PMC

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