Effect of Hydration on the Strain Gradients in Dental Hard Tissues after Heat and Cold Application

Dehydration-induced shrinkage of dentin as a potential cause of vertical root fractures

“…Numerous authors have already addressed the factor ''moisture content of dentin'' which decreases with patient's age (Arola and Reprogel, 2005), after endodontic treatment (Soares et al, 2007;Kishen and Asundi, 2005) and after bleaching (Betke et al, 2006) making these teeth more brittle than vital teeth (Kishen and Asundi, 2005;Jameson et al, 1993). Dehydrated dentin however has been shown to have a decreased toughness (Arola and Reprogel, 2005;Jameson et al, 1993) and fatigue crack growth resistance (Bajaj et al, 2006) and shows higher strains after the application of heat and cold stimuli (Shrestha et al, 2010). Furthermore, water loss may result in shrinkage of dentin which can cause the development of deleterious stresses.…”

Optical interferometry for dental hard tissue mechanics

“…We used this system to study the role of free water and bound water on dentin mechanics. [4][5][6][7] The experiments showed that the free water in the dentin surface, porosities, and tubules are lost rapidly during partial dehydration. Loss of free water resulted in distinct patterns of residual strains in dentin.…”

Microtissue engineering root canal dentine with crosslinked biopolymeric nanoparticles for mechanical stabilization

“…, Shrestha et al . ). The purpose of this study is to employ DMI to evaluate the strain distribution pattern in root dentine following canal enlargement with instruments/chemical irrigation and followed by root canal dentine surface engineered with crosslinked CSnp.…”

“…It provides whole-field strain information of specimens in real time with high sensitivity of 0.417 micrometre per fringe order (Kishen & Asundi 2005a,b, Post & Han 2008. This method has been applied to study the inplane mechanical and thermal strain distribution on dental structures (Wang & Weiner 1998, Wood et al 2003, Kishen & Asundi 2005a,b, Kishen et al 2006, Shrestha et al 2010. The purpose of this study is to employ DMI to evaluate the strain distribution pattern in root dentine following canal enlargement with instruments/chemical irrigation and followed by root canal dentine surface engineered with crosslinked CSnp.…”