Effect of Morinda Citrifolia as storage solution on the surface roughness of heat cure acrylic resin - An Invitro Study

Dr. Jailance Lathief; Dr. Vidyashree Nandini; Dr. Shafath Ahmed; Dr. Cholan Ramanujam

Volume : VII, Issue : VI, June - 2018

Effect of Morinda Citrifolia as storage solution on the surface roughness of heat cure acrylic resin - An Invitro Study

Dr. Jailance Lathief, Dr. Vidyashree Nandini, Dr. Shafath Ahmed, Dr. Cholan Ramanujam

Abstract :

Denture cleansing is important to increase denture longevity, maintain the health of oral mucosa and improve patient�s quality of life. Chemical disinfectants have been widely used as denture cleansers which effectively remove organic and inorganic matter from denture surface. Another important consideration is that the mechanical and physical properties of acrylic resin should remain un–altered. Morindacitrifolia L has been found to have antibacterial efficacy but its effect on the surface roughness of heat cure acrylic resin has not been studied.

Objectives

To evaluate and compare the surface roughness of polished heat cure acrylic resin after storage in distilled water and solution of Morindacitrifolia L (NONI).

Material and methods

Ten disc shaped specimens (2mm thickness x 5mm diameter) was faicated using heat cure acrylic resin and divided into 2 groups. All the specimens were polished and baseline surface roughness (R_a) values were measured using surface roughness tester (Profilometer). Group 1specimens (n=5) was stored in distilled water (Control group) and Group 2 specimens (n=5) was immersed in a solution of Morindacitrifolia L (Noni) for 2 weeks. Surface roughness (R_a) measurements after immersion was measured using surface roughness tester (Profilometer). The results obtained were statistically analysed using Mann–Whitney test to compare between the groups and Wilcoxon signed rank test was used to compare the time points between groups.

Results

Statistical analysis results of Mann–Whitney test showed, at baseline the mean rank value of water and Noni as 6.0�m and 5.0�m and after 2 weeks the mean rank value of water and Noni was 6.40�m and 4.60�m respectively. There is no statistical difference between both the groups as the p–value (0.602 and 0.347) is higher than p<0.05. The statistical analysis results of Wilcoxon signed rank test showed mean rank value of water at baseline and after 2 weeks as 2.00�m and 4.50�m and of Noni was 2.67�m and 3.50�m respectively. There was no statistical difference between the time points of water and Noni as the p–value (0.686 and 0.897) is higher than p<0.05.

Conclusion

Surface roughness values of heat cure acrylic resin at baseline and after immersion in water and Noni was similar and statistically there was no significant difference between the groups.