Journal of Dentistry, Shiraz University of Medical Sciences
Volume:13 Issue: 1, 2012

Statement of Problem: Nowadays, fissure sealants are commonly used for sealing the occlusal pit and fissures. However, flowable composites which are more resistance to wear and have a lower amount of shrinkage might be a good substitute for sealants.

The aim of this study was to compare the amount of micro-leakage between two types of fissure sealants, clinpro and embrace, and two kinds of flowable composites, Filtek flow and Flows-Rite.

60 intact extracted maxillary permolars were selected and divided into 4 groups. In each group, occlusal fissures of the samples were sealed with fissures sealants (clinpro or Embrace) or flowable composites (Filtek flow or Flows-Rite). The apex and furcation of all the teeth were sealed by sealing wax and then the root and crown of the samples were covered by two layers of nail varnish to 1 mm next to the sealant margin. The teeth were immersed in 0.5% fuchsine for 24 hours; then, the teeth were washed and cut off parallel to the linear axis. The microleakage of the samples was studied under the stereomicroscope with a magnification of 16x. Finally, data were analyzed using the Kruskal-Wallis test.

There was no significant difference between the amount of microleakage of fissure sealants (clinpro and embrace) and flowable composites (filtek flow and Flows-Rite).

Under the circumstances of this study and with respect to the clinical situation, it seems that both flowable composite and fissure sealants are suitable materials for pit and fissure sealing.

Statement of Problem: In most cases of periodontal therapy, antibiotics are suggested as an adjuvant. It is necessary to evaluate the effect of systemic administration of antibiotics in treatment of periodontal diseases and introduce a cost-effective method for management of periodontal infections in individuals who have no access to periodontal therapy.

This study aimed to compare the effect of antibiotics alone, scaling and root planing (SRP) alone or SRP combined with antibiotics as gold standard approach in improvement of PPD of patients with chronic periodontitis.

This was an experimental study conducted on 44 patients with chronic peridontitis. They were randomly assigned to three groups as follows: 1- SRP Group receiving scaling and root planing alone. 2- AB Group that received antibiotic. 3- Combination Group that received SRP and antibiotic. Clinical measurements including probing depth (PPD), gingival bleeding index (GBI) and plaque index (PI) were performed at base line and 3 months after the treatment. Statistical analyses were performed using covariance analysis kolmogrove-smirnov test and ANOVA test.

All 3 groups showed a significant reduction in PPD, GBI and PI 3 months after treatment (p <0.05 in all 3 groups) Improvement in PPD measures in the combination group was statistically significant (p =0.0001). The difference between the groups was not significant with respect to GBI reduction (p >0.05).

In chronic periodontitis, systemic antibiotic therapy alone was as effective as mechanical therapy alone in reduction of PPD, but systemic administration of antibiotic in combination with scaling and root planning showed the most improvement in PPD measures.