AIM To radiographically compare periapical repair of roots with infected root canals obturated in one-step or with calcium hydroxide (Ca(OH)2) intracanal medication in two steps. METHODOLOGY Standardized preoperative periapical radiographs were taken of 72 roots of vital dogs' teeth. All roots were then aseptically instrumented to ISO size 45. As negative controls, 12 roots were aseptically o...

For a long time, the problem of phosphogypsum disposal was not given due attention, which led to accumulation huge reserves this environmentally hazardous waste. Transportation in dumps and its storage requires significant capital investment operating costs, as well allocation large land areas. The harms environment, it leads entry amounts toxic substances into groundwater atmosphere. object st...

Egbuna O, Quinn S, Kantham L, Butters R, Pang J, Pollak M, Goltzman D, Brown E. The full-length calcium-sensing receptor dampens the calcemic response to 1 ,25(OH)2 vitamin D3 in vivo independently of parathyroid hormone. Am J Physiol Renal Physiol 297: F720 –F728, 2009. First published May 27, 2009; doi:10.1152/ajprenal.00164.2009.—1 ,25(OH)2 vitamin D3 [1,25(OH)2D3] increases serum Ca concent...

Apexification is a widely used technique to manage immature permanent teeth and can be performed either using calcium hydroxide (Ca(OH)2) or mineral trioxide aggregate (MTA). This paper illustrates a case report of a unsuccessful apexification with Ca (OH)2 of amaxillary incisor that was then treated by an apical barrier made of MTA.

Alcohol dispersions of Ca(OH)2 nanoparticles, the so-called nanolimes, are emerging as an effective conservation material for the consolidation of stone, mortars, and plasters present in old masonry and/or mural paintings. To better understand how this treatment operates, to optimize its performance and broaden its applications, here we study the nano and microstructural characteristics, carbon...

INTRODUCTION Several case reports on endodontic regeneration involving immature permanent teeth have recently been published. These case series have used varying treatments to achieve endodontic regeneration including triple antibiotic paste, Ca(OH)(2), and formocresol. However, no study has analyzed the overall results. METHODS In this retrospective study, we collected radiographs from 54 pu...

Designing and preparing chloroprene rubber (CR) with robust mechanical excellent flame retardancy performance are challenging. In this work, a biomimetic design for high flame-retardant CR by synchronous introducing of sacrificial bond (disulfide) crosslinked networks into the chemically network is developed based on two new types vulcanization reactions. Under catalysis Mg(OH)2, dynamic cross-...

Kappaphycus alvarezii is a carrageenan-producing red seaweed that widely cultivated in Nusa Lembongan waters, Bali, Indonesia. Carrageenan generally extracted using an alkaline base,. iIn this study three different types of alkali were used to extract carrageenan originating from Waters. This aims determine the quality extraction. The alkalis KOH, NaOH, Ca(OH)2, and distilled water as control. ...

Many stresses are associated with increased accumulation of reactive oxygen species (ROS) and polyamines (PAs). PAs act as ROS scavengers, but export of putrescine and/or PAs to the apoplast and their catabolization by amine oxidases gives rise to H2O2 and other ROS, including hydroxyl radicals ((•)OH). PA catabolization-based signalling in apoplast is implemented in plant development and progr...