the topical application of CoQ10 as an adjunct to non-surgical periodontal therapy improve the clinical and immunologic outcomes, but it not considered a strong modality for periodontal therapy. Tumor Necrosis Factor- α could be considered as strong laboratorymarker for periodontal disease activity. In addition, conventional periodontal therapy remains the cornerstone as basicand initial periodontal therapy.

ABSTRACT

Aim: This study aims to evaluate the effect of and compare between the piezosurgical ridge splitting and osseodensification in implant primary stability.

Subjects and Methods: 28 implants were divided into two groups. Group I: 14 implants in sites received piezosurgery technique. Group II: 14 implants in sites received osseodensification technique. Then, all implants were evaluated clinically for primary stability after implant insertion by Osstell mentor magnetic resonance device and radiographically for peri-implant bone density.

Results: unpaired t-test between the two groups showed moderate statistical significant difference in group II when compared with group I in both primary stability and bone density

Conclusion: The primary stability in both piezosurgical ridge splitting and osseodensification techniques is within normal range but in favor of osseodensification technique suggesting that osseodensification enhance the bone density thereby improve the implant primary stability.

Abstract

Aim: The aim of this study is to investigate the DNA ploidy and S-Phase Fraction (SPF) of some Salivary Gland Tumors (SGTs) in Egyptian patients and to investigate the correlation between these two biological parameters and the presumptive behavior of these neoplasms.

Methods: Flow cytometric analysis of DNA pliody and S-Phase Fraction (SPF) was done in 50 fresh tumor tissue sections of SGTs which diagnosed as 15 benign and 35 malignant tumors.

Results: 93.3% of the benign SGTs tumors were diploid, while only 34% of malignant tumors were diploid and 66% were aneuploid. The malignant SGTs had higher SPF than the benign tumors but with no significant difference. There was no significant correlation of ploidy status or SPF with the tumor grades of mucoepidermoid carcinomas.

Conclusion: DNA aneuploidy may be a key indicator for tumors activity and malignancy in SGTs, while the SPF has a minor role in the evaluation of SGTs activity.