There are histological and functional differences between human deciduous and permanent periodontal ligament (PDL) tissues. The aim of this study was to determine the differences between these two types of tissue at the molecular level by comparing their gene expression patterns. PDL samples were obtained from permanent premolars (n = 38) and anterior deciduous teeth (n = 31) extracted from 40 ...

Complete reconstruction of damaged periodontal pockets, particularly regeneration of periodontal ligament (PDL) has been a significant challenge in dentistry. Tissue engineering approach utilizing PDL stem cells and scaffolding matrices offers great opportunity to this, and applying physical and mechanical cues mimicking native tissue conditions are of special importance. Here we approach to re...

BACKGROUND Eczematous skin changes overlying port-wine stains have been reported to improve with pulsed-dye laser (PDL) treatment. However, PDL has not as yet been evaluated for the treatment of atopic dermatitis (AD; eczema). AIM To evaluate in a controlled trial the effects and safety of PDL treatment in children with AD who had chronic localized lesions. METHODS Twelve children with loca...

OBJECTIVES The non-homogenous aspect of periodontal ligament (PDL) has been examined using finite element analysis (FEA) to better simulate PDL behavior. The aim of this study was to assess, by 2-D FEA, the influence of non-homogenous PDL on the stress distribution when the free-end saddle removable partial denture (RPD) is partially supported by an osseointegrated implant. MATERIAL AND METHO...

introduction: solar lentigines are among commonest cosmetic problems. there are many topical therapies suggested to treat these lesions including cryotherapy, chemical peeling with tri chloro acetic acid (tca) and laser therapy with q-switched lasers as well as long pulsed lasers. considering possible treatment side effects (pih, scar) with cryotherapy and peeling in iranian patients (darker sk...

Background and aim : The clinical management of verrucae vulgaris is often challenging and no treatment is always effective. Early studies have suggested that pulsed-dye laser (PDL) may be highly effective in the treatment of verrucae through obliteration of dilated vessels in papillary dermis. The objective of this study was to compare safety and efficacy of 585 nm with 595 nm PDL in the...

Gingival fibroblasts function as accessory immune cells and are capable of synthesizing cytokines in response to lipopolysaccharides (LPS) from Gram-negative microbes. Recently, we have isolated, cloned, and characterized two cell lines which exhibit characteristics of periodontal ligament (PDL) cells. In this report, we demonstrate that PDL cells showing osteoblast-like phenotype are not LPS-r...

After ligature of the pancreatic duct (PDL), the body weight of rats decreased for several days, but began to increase from day 7, returning to that at the time of the operation on day 14. In these PDL animals, the weight gain was not due to improved digestion resulting from duodenal leakage of pancreatic enzymes or a compensatory increase of proteolytic enzyme activities in the intestinal muco...