ABSTRACT
Statement of the Problem: Melanin pigmentation of the gingiva is a crucial esthetic problem. A variety of methods have been used for gingival depigmentation
Purpose: The purpose of this study was to compare the results of two treatment modalities: scalpel technique and cryotherapy with liquid nitrogen in treatment of gingival pigmentation
Materials and Method: Twenty patients with chief complaint of gingival pigmentation participated in our study. 10 patients were treated with cryotherapy and remaining 10 participants were undergone the scalpel technique surgery. We evaluated acquiescence and comfort of the patients, degree of depigmentation, based on the area of pigmentation shown by gridlines option in Microsoft Paint software, and the presence or absence of gingival recession before and one month after treatment. Data was analyzed using Mann-Whitney and Chi-Square tests. A significance level of p
Results: Mean value and standard deviation of depigmentation for group A and group B was 96.17 +/- 2.51 and 95 +/- 2.48, respectively. The difference was not statistically significant [p= 0.225]. There was no association between the treatment modality and the gingival recession [p= 0.303] or the treatment modality and the patient satisfaction [p= 0.346]. No significant difference was found between gingival recession measures before and after the operation in the two treatment modalities
Conclusion: Surgical blade and cryosurgery with liquid nitrogen had no significant difference in treatment of physiologic gingival pigmentation. Both Techniques are acceptable in the treatment of gingival pigmentation
ABSTRACT
Mechanical method of plaque control is still considered the most effective method in reducing microbial dental plaque, however, considering the limitations of this technique in children, the assistance of chemical plaque control methods have been suggested. The purpose of this study was to compare the effects of Meridol and kids Irsha mouth rinses on plaque accumulation in 7-9 year-old school children, referred to Community Dental Health Department of Zahedan Dental School in 2010. A double-blind clinical trial was conducted. Fifty samples were randomly allocated to four groups including Meridol, Kids Irsha, chlorhexidine [positive control] and normal saline [negative control]. Prophylaxis was done for all samples, and plaque index was determined for each sample after 48 hours on days 0 and 30. Samples used mouth rinses every day during this period. The data was analyzed with SPSS-17 using Kruskal-Wallis, Mann-Whitney and Sign tests. In this study, a significance level of p< 0.05 has been considered. At the end of the study, 45 samples attended for plaque index documentation. Plaque index was reduced significantly in all four groups on day 30 compared to day 0. Meridol, Kids Irsha, and saline groups did not show any significant difference with each other with respect to plaque reduction percentage between days 0 and 30, whereas chlorhexidine showed significant difference with Meridol, Kids Irsha and Saline [p=0.001]. The effect of Meridol and Kids Irsha mouth rinses on plaque reduction was not significant compared to that of Chlorhexidin