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. 2022 Dec;13(Suppl 2):S462-S465.
doi: 10.4103/japtr.japtr_262_22. Epub 2022 Dec 30.

Estimation of wettability of topical fluoride gel on anterior and posterior teeth: An in vitro study

Kiran Srinivas  1 , S Balaji Ganesh  2 , S Jayalakshmi  2
Affiliations

Estimation of wettability of topical fluoride gel on anterior and posterior teeth: An in vitro study

Kiran Srinivas et al. J Adv Pharm Technol Res. 2022 Dec.

Abstract

The surface area determination has a vital role in measuring the properties of liquid and solid substances. Fluoride is a potent remineralizing agent of the teeth. The surface area is measured using a goniometer. The main aim of this study is to estimate the wettability of topical fluoride gel on the anterior and posterior teeth surfaces. Topical acidulated phosphate fluoride (APF) gel was taken in small quantities. Anterior and posterior teeth were collected, and their superficial unaltered enamel sections were used as the surface where the contact angle (CA) is determined. The surface wettability is determined using Ossila goniometer to measure CA. Each stage was mounted on a mechanical stage of the goniometer. A calibrated microsyringe was used to dispense drops of the APF gel over the surface of the specimen Group A (anterior tooth cut section) and Group B (posterior tooth cut section). This procedure is repeated for all specimen samples. The mean of CAs of the anterior teeth (88.41°) was greater when compared with the mean of posterior teeth (80.36°) CA. P value found using the paired t-test of SPSS software is found to be 0.271 (>0.05), hence statistically not significant. The greater the CA, the lower is the degree of wettability on the teeth surfaces. The mean CA of the topical fluoride APF gel on the anterior tooth surface is greater when compared to the posterior tooth surface. This signifies that greater wettability is seen on posterior tooth surfaces.

Keywords: Contact angle; goniometer; hydrophilic; hydrophobic; innovative measurement; wettability.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
The Ossila goniometer, where the anterior teeth are kept for the analysis of the contact angle (wettability) of the topical fluoride gel
Figure 2
Figure 2
The ossila goniometer, where the posterior teeth are kept for the analysis of the contact angle (wettability) of the topical fluoride gel
Figure 3
Figure 3
The above figure depicts the analysis of the average contact angle of the topical fluorides on the tooth substrate using the Ossila goniometer
Graph 1
Graph 1
The above graph represents the correlation between the type of teeth (anterior and posterior) with the mean of the average contact angle estimated on individual teeth surfaces. The mean of the contact angles of the anterior (88.41°, blue) and posterior tooth (80.35°, red) was found. The mean of the contact angles of the anterior teeth is greater in comparison with the posterior tooth. The anterior teeth have less wettability when compared to the posterior teeth as contact angle is inversely proportional to wettability
See this image and copyright information in PMC

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