Non-destructive assessment of cavity wall adaptation of class V composite restoration using swept-source optical coherence tomography

Senawongse, Pisol; Pongprueksa, Pong; Harnirattisai, Choltacha; Sumi, Yasunori; Otsuki, Masayuki; Shimada, Yasushi; Tagami, Junji

doi:10.4012/dmj.2011-061

Cited by 8 publications

(8 citation statements)

References 35 publications

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“…6). Therefore, our OCT observations are in line with those of a recent study [22] and white areas at the adhesive interface did not represent reflection artefacts but the real presence of gaps inside the restoration.…”

Section: Discussionsupporting

confidence: 81%

“…It is a high-resolution analysis that enables the visualization beyond the surface, without entering into contact with the tissue of interest. Several studies have used this technology in the dental field to judge on the internal adaptation of fissure sealants, class I cavities, defects inside the mass of composite restorations and degree of demineralization of caries-affected dentin [18][19][20][21][22]. However, no study has assessed the effect of marginal gaps on gap depth, justifying why the present investigation can add interesting information to the existing literature.…”

Section: Introductionmentioning

confidence: 37%

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Failure analysis of adhesive restorations with SEM and OCT: from marginal gaps to restoration loss

et al. 2015

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Objective The objective of this study was to analyse the failure mode of adhesive interfaces by comparing OCT and scanning electron microscope (SEM) analysis of class V restoration margins located on enamel and dentin. Materials and methods Three groups were tested that differed in the application of a 3-step etch-and-rinse adhesive system (OptiBond FL) prior to cavity filling with restorative composite resin (Clearfil AP-X). After tooth restoration and polishing, the samples were loaded in a fatigue machine, and adhesive interfaces were evaluated with OCT and SEM. Results Important and complementary information could be obtained with OCT analysis in respect to how marginal defects can propagate inside the cavity, compromising the restoration's long-term performance. A self-etching effect was observed with OptiBond FL due to the presence of an acidic primer (GPDM) within its composition. Our results could show that areas of bonding and gaps coexisted within the same restoration. Conclusions When marginal imperfections, or noncontinuous margins, were detected by SEM, also imperfections beneath the surface could be observed at the toothrestoration interface with OCT. Restoration loss occurred above the borderline of 50 % of marginal gaps on enamel and dentin. Clinical relevance Marginal discrepancies of adhesive restorations can propagate inside the cavity and lead to restoration loss.

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Section: Discussionsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 37%

Failure analysis of adhesive restorations with SEM and OCT: from marginal gaps to restoration loss

et al. 2015

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“…This technique was initially used in ophthalmology 10) , in which it has been well developed and is clinically used, but it has also been continuously benefiting other areas, such as cardiology, gastroenterology, dermatology, and cellular engineering [11][12][13] . In recent years, some studies have suggested the usability of OCT in dentistry, for example, for the treatment of caries and adaptation of restorations 14,15) . However, there have been no studies regarding the measurement of RDT by OCT.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the remaining dentin thickness using optical coherence tomography for crown preparation

et al. 2014

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This study aimed to investigate the maximum depth imaging and optical properties of the dentin near the pulp by using optical coherence tomography (OCT) and to explore the possibility of measuring the remaining dentin thickness (RDT). Human third molars were used. In experiment 1, the cuspal dentin blocks (0.50-mm to 1.75-mm thickness) were prepared. Each specimen was scanned using OCT. OCT images could be obtained for all specimens with 1.00-mm or less thicknesses. In experiment 2, dentin-pulp complex slices (0.50-mm and 1.00-mm RDT) were prepared. Each specimen was scanned using OCT and micro-computed tomography, and compared. The resulting length change rates of OCT images for the 0.50-mm RDTs were significantly lower than those of the 1.00-mm RDTs. Within the limitations of this study, OCT was effective for measuring the 1.00-mm or less RDT and preventing pulpal injury, while considering the length change rate of OCT image as a variable.

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“…SS-OCT was used and validated as an alternative noninvasive method to assess marginal gap of resin composite fillings [31,32]. A clinical study [33] analysed resin composite direct restorations with SS-OCT in a group of 52 patients.…”

Section: Resultsmentioning

confidence: 99%

OCT Application in Direct Dental Restorations Marginal Fit Evaluation

Popescu¹,

Lascu²,

Gîngu³

et al. 2019

Rev. Chim.

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To apply OCT analysis in secondary caries and marginal gap detection and evaluation for direct dental restorations is the aim of the paper. 15 extracted teeth with pre-existing direct dental restorations were analysed through OCT to evaluate marginal fit of restorations. The OCT system used wasmanufactured by Thorlabs (OCS1300SS), powered by a swept laser source with central 1310 nm wavelength, 100 nm spectral bandwidth and 12 mW average power. The occlusal area of the teeth was sampled pictured in 10 mm width, 10 mm distance and 3 mm depth. OCT was used also to evaluate in micrometers (mm) the maximum marginal gap between dental filling and tooth. OCT analysis of the marginal fit of direct dental restorations after A scan examination revealed that amalgam had the smallest marginal gap (width 210 mm, depth 90 mm), followed by glass ionomer (width 350 mm, depth 280 mm), and composite (width 520 mm, depth 300 mm). OCT analysis revealed that for marginal fit evaluation amalgam had best performance, followed by glass ionomer, and ultimately, by resin composite. OCT could be used as an alternative method to appreciate the marginal fit of direct dental restorations giving details that could help dentists to take best treatment decision, whether to repair or to replace the restorations.

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Non-destructive assessment of cavity wall adaptation of class V composite restoration using swept-source optical coherence tomography

Cited by 8 publications

References 35 publications

Failure analysis of adhesive restorations with SEM and OCT: from marginal gaps to restoration loss

Failure analysis of adhesive restorations with SEM and OCT: from marginal gaps to restoration loss

Measurement of the remaining dentin thickness using optical coherence tomography for crown preparation

OCT Application in Direct Dental Restorations Marginal Fit Evaluation

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