Characterization, mechanistic analysis and improving the properties of denture adhesives

Autor: Andrew M. Middleton, Nasim Annabi, Nima Roohpour, Mehdi Kazemzadeh-Narbat, Ali Khademhosseini, Nona Khadivi, Ali Tamayol, Afsoon Fallahi
Rok vydání: 2017
Předmět:
Hydrogen bonding
Materials science
Surface Properties
medicine.medical_treatment
Dental Cements
02 engineering and technology
In Vitro Techniques
Medical and Health Sciences
Article
03 medical and health sciences
0302 clinical medicine
Engineering
Rheology
Denture adhesives
Tensile Strength
Materials Testing
Spectroscopy
Fourier Transform Infrared
medicine
General Materials Science
Composite material
Fourier transform infrared spectroscopy
Dental/Oral and Craniofacial Disease
Saliva
General Dentistry
Spectroscopy
Tensile testing
chemistry.chemical_classification
Lap shear
Adhesion mechanism
Temperature
030206 dentistry
Polymer
Adhesion
Hydrogen-Ion Concentration
021001 nanoscience & nanotechnology
Denture Retention
Characterization (materials science)
chemistry
Mechanics of Materials
Fourier Transform Infrared
Dentistry
Cohesion
Adhesive
Dentures
0210 nano-technology
Salivation
Zdroj: Fallahi, A; Khadivi, N; Roohpour, N; Middleton, AM; Kazemzadeh-Narbat, M; Annabi, N; et al.(2018). Characterization, mechanistic analysis and improving the properties of denture adhesives. Dental Materials, 34(1), 120-131. doi: 10.1016/j.dental.2017.09.015. UCLA: Retrieved from: http://www.escholarship.org/uc/item/6xm9s47b
Dental materials : official publication of the Academy of Dental Materials, vol 34, iss 1
ISSN: 1879-0097
Popis: © 2017 The Academy of Dental Materials Objective Denture adhesives are widely used to avoid the detachment and sliding of dentures. However, the adhesion properties can be affected by variation in mouth conditions such as the level of salivation. The objective of this study was to understand the effect of environmental conditions on the adhesion properties of a commercially available denture adhesive named as Poligrip®Free manufactured by GlaxoSmithKline Ltd., UK and to identify the reasons for the observed variation in its adhesion strength. Methods The failure mechanisms of denture adhesive have been assessed through using different physical, mechanical and thermal characterization experiments. All methods were used in different pH, temperatures, and salivation conditions and at the end, a strategy was proposed to overcome the failure of the paste in hyposalivation as well. Results In vitro models mimicking the denture gingival interface were designed to evaluate the adhesion properties of the investigated adhesive. Changes in the adhesion strength in response to three major factors related to the oral conditions including level of salivation, pH, and temperature were measured. The results of lap shear, tensile test, and internal interactions suggested a cohesion failure, where the lowest adhesion strength was due to hyposalivation. Fourier transform infrared spectroscopy (FTIR) and rheological analysis confirmed the importance of hydrogen bonds and hydration in the adhesion strength of the paste. Significance The investigated scenarios are widely observed in patient using denture adhesives and the clinical reports have indicated the inconsistency in adhesion strength of the commercial products. After identifying the potential reasons for such behavior, methods such as the addition of tripropylene glycol methyl ether (TPME) to enhance internal hydrogen bonds between the polymers are proposed to improve adhesion in the hyposalivation scenario.
Databáze: OpenAIRE
Externí odkaz: