Exploiting optical coherence tomography to evaluate wear in spiral dental polishing systems

Kamylla Yolanda de Souza e Silva; Cecília Maria Cruz Falcão; Luana Osório Fernandes; Anderson Stevens Leonidas Gomes; Anderson Stevens Leonidas Gomes

doi:10.1364/AO.476769

Applied Optics
Vol. 62,
Issue 8,
pp. C8-C13
(2023)
•https://doi.org/10.1364/AO.476769

Exploiting optical coherence tomography to evaluate wear in spiral dental polishing systems

Kamylla Yolanda de Souza e Silva, Cecília Maria Cruz Falcão, Luana Osório Fernandes, and Anderson Stevens Leonidas Gomes

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Kamylla Yolanda de Souza e Silva, Cecília Maria Cruz Falcão, Luana Osório Fernandes, and Anderson Stevens Leonidas Gomes, "Exploiting optical coherence tomography to evaluate wear in spiral dental polishing systems," Appl. Opt. 62, C8-C13 (2023)

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- Medical Optics, Microscopy, and Biotechnology
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About this Article
History
- Original Manuscript: September 27, 2022
- Revised Manuscript: December 5, 2022
- Manuscript Accepted: December 5, 2022
- Published: January 6, 2023
Virtual Issues
Applied Optics Latin America Optics and Photonics 2022 (2022)

Abstract

This study aimed to evaluate the behavior of spiral polishing systems in restorative materials through optical coherence tomography (OCT). Performance of spiral polishers specific to resin and ceramics were evaluated. The surface roughness of restorative materials was measured, and images of the polishers were acquired by OCT and stereomicroscope. Surface roughness was reduced in ceramic and glass-ceramic composite polished with a system specific to resin (${{p}}\; \lt \;{0.01}$). Surface area variation was observed on all polishers, except for the medium-grit polisher tested in ceramic (${{p}}\; \lt \;{0.05}$). Similarity between images obtained through OCT and stereomicroscopy presented a Kappa inter- and intra-observer of 0.94 and 0.96, respectively. Then, OCT was able to evaluate wear areas in spiral polishers.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Polishing System	Grit	Polisher Color	Lot
To composite resin	Step 1–Medium (MR)	Gray	RCO543204M
To composite resin	Step 2–Fine (FR)	White	RCO543204F
To ceramic	Step 1–Medium (MC)	Wine	P543204M
To ceramic	Step 2–Extra fine (EFC)	White	P543204XF

Restorative Material	Manufacturer	Shade	Type	Filler Content (Vol %)	Particle Sizes	Lot
Composite resin	Ivoclar Vivadent, Schaan, Liechtenstein	A1	Nanohybrid	55–57	40 nm–3 µm	X49044
Ceramic	Dentsply Sirona, Bensheim, Germany	A1C	–	$\approx 30$	–	75970
Composite glass-ceramic	FGM Dental Products, Joinvile, Brazil	A1-LT	Nanohybrid	58	40 nm–5 µm	020518

Polisher	Restorative Material		Acronym
MR	Composite resin (R)	Medium-grit resin polisher $X$ composite resin	MR-R
FR	Composite resin (R)	Fine-grit resin polisher $X$ composite resin	FR-R
MC	Ceramic (C)	Medium-grit ceramic polisher $X$ ceramic	MC-C
EFC	Ceramic (C)	Extra-fine grit ceramic polisher $X$ ceramic	EFC-C
MR	Composite glass-ceramic (GC)	Medium-grit resin polisher $X$ composite glass-ceramic	MR-GC
FR	Composite glass-ceramic (GC)	Fine-grit resin polisher $X$ composite glass-ceramic	FR-GC
MC	Composite glass-ceramic (GC)	Medium-grit ceramic polisher $X$ composite glass-ceramic	MC-GC
EFC	Composite glass-ceramic (GC)	Extra-fine grit ceramic polisher $X$ composite glass-ceramic	EFC-GC

	Ra
Material	Control	Polished	$p$ -value
Composite resin	0.493 (0.237)	0.324 (0.223)	0.09
Ceramic	0.747 (0.064)	0.210 (0.076)	$< 0.01$
Composite glass-ceramic $x$ polishing system to composite resin	0.226 (0.033)	0.048 (0.024)	$< 0.01$
Composite glass-ceramic $x$ polishing system to ceramic	0.215 (0.063)	0.178 (0.078)	0.15

	Area ( ${m m}^{2}$ )
Polisher	T0	T5	T10
MR-R	$0.620 (0.069)^{a}$	$0.441 (0.100)^{b}$	$0.400 (0.080)^{b}$
FR-R	$0.674 (0.081)^{a}$	$0.406 (0.148)^{b}$	$0.447 (0.127)^{b}$
MC-C	$0.795 (0.185)^{a}$	$0.595 (0.161)^{a}$	$0.622 (0.129)^{a}$
EFC-C	$0.593 (0.127)^{a}$	$0.434 (0.108)^{b}$	$0.428 (0.104)^{b}$
MR-GC	$0.718 (0.045)^{a}$	$0.693 (0.140)^{a, b}$	$0.598 (0.061)^{b}$
FR-GC	$0.826 (0.139)^{a}$	$0.687 (0.141)^{a, b}$	$0.649 (0.117)^{b}$
MC-GC	$0.828 (0.080)^{a}$	$0.660 (0.078)^{b}$	$0.654 (0.084)^{b}$
EFC-GC	$0.900 (0.083)^{a}$	$0.747 (0.049)^{b}$	$0.749 (0.138)^{b}$

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