Concentration of hydrogen ions in several calcium hydroxide pastes over different periods of time

Brazilian Dental Journal
Morgana Eli ViannaBrenda Paula Figueiredo de Almeida Gomes

Abstract

The purpose of this in vitro study was to measure the concentration of hydrogen ions (pH) of calcium hydroxide [(Ca(OH)2] pastes combined with different vehicles over 7 periods of time. The Ca(OH)2 was manipulated with the following vehicles: i: sterile water; ii: iodoform plus sterile water; iii: local anesthetics (Lydocaine 2% with 1: 100,000 epinephrine); iv: polyethyleneglycol; v: glycerin; vi: 2.0% chlorhexidine gel; vii: camphorated paramonochlorophenol (CMCP); viii: (CMCP) + glycerin; and ix: polyethyleneglycol plus CMCP. The pastes were made on a glass plate to toothpaste consistency and the pH was measured at the following times: 5 min, 1, 24, 48 h; 7, 14 and 28 days. The data were statistically analyzed (Kruskal-Wallis at p<0.05). At 5 min, 1 and 24 h, the pH of all tested pastes ranged from 13.05 to 11.16. At 48 h and 7 days the pH of all tested pastes ranged from 11.66 to 8.92. At 14 and 28 days almost all pastes had pH means lower than 10. In conclusion, the mean pH of all tested calcium hydroxide pastes decreased with the time. Pastes made with aqueous vehicles (especially with sterile water), followed by oily vehicles (especially with CMCP + glycerin), held the highest pH means over the periods of time tested.

References

Jul 1, 1975·Journal of the British Endodontic Society·G S Heithersay
Jun 1, 1989·Endodontics & Dental Traumatology·H J StaehleW Hoppe
Jan 1, 1966·The Journal of the American Dental Association·A L Frank
Jan 1, 1980·Journal of Endodontics·L TronstadI Riis
Feb 1, 1993·Journal of Endodontics·K E Safavi, F C Nichols
Nov 7, 1999·International Endodontic Journal·L R Fava, W P Saunders
Jul 9, 2003·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·María Gabriela PaciosMaría Elena López
Mar 18, 2005·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Fabrício B TeixeiraMartin Trope
Jan 24, 2006·Brazilian Dental Journal·Morgana Eli ViannaFrancisco José de Souza Filho
Sep 26, 2006·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Brenda Paula Figueiredo de Almeida GomesFrancisco José de Souza Filho
Jan 24, 2007·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Ali Cağin YücelDilek Güvenç
Apr 29, 2008·Brazilian Dental Journal·Francisco José de Souza-FilhoBrenda Paula Figueiredo de Almeida Gomes

❮ Previous
Next ❯

Citations

Feb 18, 2014·Journal of the Indian Society of Pedodontics and Preventive Dentistry·Divya S SharmaRina Verma
Dec 18, 2013·Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons·Darceny Zanetta-BarbosaAntônio Cesar Perry de Carvalho
Dec 21, 2010·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Juliana M da SilvaOscar F Pessoa
Sep 25, 2014·Brazilian Dental Journal·Victor Eduardo de Souza BatistaGraziela Garrido Mori

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Journal of Applied Oral Science : Revista FOB
Cláudia de Moura CarreiraJosé Luiz Lage-Marques
Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc
Raul C PallottaManoel E de Lima Machado
Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc
Zahed Mohammadi, Paul V Abbott
© 2021 Meta ULC. All rights reserved