Intracoronal stress transfer through enamel following RBC photopolymerisation: A synchrotron X-ray study

Al-Jawad, Maisoon; Addison, Owen; Sirovica, Slobodan; Siddiqui, Samera; Martin, Richard A.; Wood, David; Watts, David C.

doi:10.1016/j.dental.2018.07.005

Cited by 2 publications

(6 citation statements)

References 64 publications

(73 reference statements)

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“…[ 3 4 5 ] Research has indicated that restorative composites pose stress transfer to the enamel. [ 11 20 21 ] Laboratory investigations, such as cuspal deflection methods,[ 22 23 24 25 ] asserted that some strain is exerted on the tooth’s hard tissue, but it could not be quantified. The strain induced at the lattice level was studied using Synchrotron X-ray diffraction in this study.…”

Section: Discussionmentioning

confidence: 99%

“…This methodology was adopted because it primarily focuses on the strain fostered in the crystalline structure without altering the sample to powders or liquids. [ 11 12 26 ]…”

Section: Discussionmentioning

confidence: 99%

“…This type of diffraction does not require the samples to be powdered which can affect the results, hence was chosen. [ 11 12 ]…”

Section: Introductionmentioning

confidence: 99%

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Comparison and evaluation of the effect of polymerization of resin-modified glass ionomer cement and dual-cure resin cement on the crystalline structure of dentin using synchrotron X-ray diffraction and its clinical correlation with postoperative sensitivity

Jei¹,

Balaji²,

Muthukumar³

2023

J Indian Prosthodont Soc

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Aim: To compare the effect of polymerization of resin-modified glass ionomer cement and dual-cure resin cement on the crystalline structure and to correlate it clinically with postoperative sensitivity. Settings and Design: The evaluation of crystalline strain in the dentin slabs was done using Synchrotron X-ray diffraction. The post operative sensitivity was measured clinically using Schiff’s sensitivity scale. Materials and Methods: A total of 44 extracted and noncarious premolars were collected. Dentin slabs of dimensions 2 mm × 2 mm × 1.5 mm were prepared from the buccal aspect of the extracted teeth. The dentin slabs were then divided into two groups, Group A dual-cured resin cement and Group B resin-modified glass ionomer cement was applied. The dentin slabs first underwent synchrotron X-ray diffraction before and after the application of cement. Forty-two patients who were undergoing complete metal fixed prostheses on vital posterior abutments were selected. In this, 21 vital abutments were included in each group. Tooth preparation and fabrication of complete metal prostheses were done in the conventional manner and cemented using the 2 luting cements in Groups A and B, respectively. Dentinal hypersensitivity was measured using Schiff ’s scale, postcementation, after 1 week and 1 month. Statistical Analysis: Independent t-test was done for comparing the two cements in two cements in terms of lattice strain. Mann–Whitney U-test was done for comparing the cements with respect to dentinal hypersensitivity. Spearman’s correlation coefficient was used for clinical correlation between dentinal hypersensitivity and crystalline strain. Results: The lattice strain generated in dual cure resin cement was higher than that in resin-modified glass ionomer cement and was statistically significant. Postcementation hypersensitivity was higher in dual-cured resin than resin-modified glass ionomer cement but was not statistically significant in the follow-up visits. Spearman’s correlation coefficients did not reveal any significant clinical correlation between lattice strain and dentinal hypersensitivity. Conclusion: Dual cure resin cements generate greater lattice strain as compared to resin modified glass ionomer cements.

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Section: Discussionmentioning

confidence: 99%

“…This methodology was adopted because it primarily focuses on the strain fostered in the crystalline structure without altering the sample to powders or liquids. [ 11 12 26 ]…”

Section: Discussionmentioning

confidence: 99%

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Comparison and evaluation of the effect of polymerization of resin-modified glass ionomer cement and dual-cure resin cement on the crystalline structure of dentin using synchrotron X-ray diffraction and its clinical correlation with postoperative sensitivity

Jei¹,

Balaji²,

Muthukumar³

2023

J Indian Prosthodont Soc

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“…In a comparative study of a human tooth and animal rostrum in a whale, more texture was present in human enamel, suggesting a different biomineralisation process [ 266 ]. Besides phase and texture analyses, WAXS can also be used to study the mechanical properties of materials, such as the measurement of the crystallographic strain of HAp before and after resin-based composite photo-polymerisation [ 380 ] with the determination of the evolution of lattice parameters in enamel.…”

Section: Synchrotron (Circular Particle Accelerator)mentioning

confidence: 99%

“… Timeline of the synchrotron studies carried out on human teeth. Timeline showing studies that have been performed on human teeth, with the details of some research done over the past decades covering different modalities and applications, e.g., WAXS, SAXS, tomography, X-ray fluorescence spectroscopy, and PIC mapping, the details in the figure are from these references [ 31 , 39 , 56 , 57 , 77 , 78 , 89 , 121 , 169 , 170 , 171 , 172 , 175 , 193 , 195 , 303 , 304 , 310 , 318 , 327 , 328 , 333 , 338 , 344 , 348 , 349 , 353 , 354 , 361 , 363 , 368 , 372 , 376 , 380 , 385 , 392 , 399 , 403 , 404 , 407 , 412 , 413 , 414 , 416 , 419 , 420 , 423 , 425 , …”

Section: Figurementioning

confidence: 99%

Synchrotron X-ray Studies of the Structural and Functional Hierarchies in Mineralised Human Dental Enamel: A State-of-the-Art Review

et al. 2023

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Hard dental tissues possess a complex hierarchical structure that is particularly evident in enamel, the most mineralised substance in the human body. Its complex and interlinked organisation at the Ångstrom (crystal lattice), nano-, micro-, and macro-scales is the result of evolutionary optimisation for mechanical and functional performance: hardness and stiffness, fracture toughness, thermal, and chemical resistance. Understanding the physical–chemical–structural relationships at each scale requires the application of appropriately sensitive and resolving probes. Synchrotron X-ray techniques offer the possibility to progress significantly beyond the capabilities of conventional laboratory instruments, i.e., X-ray diffractometers, and electron and atomic force microscopes. The last few decades have witnessed the accumulation of results obtained from X-ray scattering (diffraction), spectroscopy (including polarisation analysis), and imaging (including ptychography and tomography). The current article presents a multi-disciplinary review of nearly 40 years of discoveries and advancements, primarily pertaining to the study of enamel and its demineralisation (caries), but also linked to the investigations of other mineralised tissues such as dentine, bone, etc. The modelling approaches informed by these observations are also overviewed. The strategic aim of the present review was to identify and evaluate prospective avenues for analysing dental tissues and developing treatments and prophylaxis for improved dental health.

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Intracoronal stress transfer through enamel following RBC photopolymerisation: A synchrotron X-ray study

Cited by 2 publications

References 64 publications

Comparison and evaluation of the effect of polymerization of resin-modified glass ionomer cement and dual-cure resin cement on the crystalline structure of dentin using synchrotron X-ray diffraction and its clinical correlation with postoperative sensitivity

Comparison and evaluation of the effect of polymerization of resin-modified glass ionomer cement and dual-cure resin cement on the crystalline structure of dentin using synchrotron X-ray diffraction and its clinical correlation with postoperative sensitivity

Synchrotron X-ray Studies of the Structural and Functional Hierarchies in Mineralised Human Dental Enamel: A State-of-the-Art Review

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