Cargando…

Trueness of the Inner Surface of Monolithic Crowns Fabricated by Milling of a Fully Sintered (Y, Nb)-TZP Block in Chairside CAD–CAM System for Single-visit Dentistry

A single-visit zirconia restoration can be easily achieved if direct milling of a fully sintered zirconia block can be performed without much effort. However, no studies have yet been reported regarding the evaluation of the trueness of crown fabricated from chairside-milling of a fully sintered zir...

Descripción completa

Detalles Bibliográficos
Autores principales: Cho, Jun-Ho, Yoon, Hyung-In, Han, Jung-Suk, Kim, Dae-Joon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6803933/
https://www.ncbi.nlm.nih.gov/pubmed/31590370
http://dx.doi.org/10.3390/ma12193253
_version_ 1783461062895468544
author Cho, Jun-Ho
Yoon, Hyung-In
Han, Jung-Suk
Kim, Dae-Joon
author_facet Cho, Jun-Ho
Yoon, Hyung-In
Han, Jung-Suk
Kim, Dae-Joon
author_sort Cho, Jun-Ho
collection PubMed
description A single-visit zirconia restoration can be easily achieved if direct milling of a fully sintered zirconia block can be performed without much effort. However, no studies have yet been reported regarding the evaluation of the trueness of crown fabricated from chairside-milling of a fully sintered zirconia block in the chairside computer-aided design and computer-aided manufacturing (CAD–CAM) system for single-visit dentistry. This in vitro study aimed to evaluate the trueness of crowns fabricated by milling a fully sintered zirconia block in the chairside CAD–CAM system and investigate the clinical implications for single-visit chairside restoration. Crowns were fabricated either by chairside-milling a fully sintered block of niobium oxide containing yttria-stabilized tetragonal zirconia polycrystals ((Y, Nb)-TZP) without the sintering process (n = 12) in a chairside single-visit dentistry system (Chairside group) or by laboratory-milling a partially sintered 3 mol% block of yttria-stabilized tetragonal zirconia polycrystals (3Y-TZP) followed by the sintering process (n = 12) in a conventional laboratory system (Labside group). Crown fabrication time, milling tool diameter and the trueness of each crown were evaluated. All trueness values of both groups were within the clinically acceptable range, although a significant difference between the Chairside (43.0 ± 3.67 μm) and Labside groups (37.4 ± 2.41 μm) was observed (P < 0.05). Mean fabrication time was 0.52 h and 1.42 h for Chairside and Labside groups, respectively. A decrease in the tool diameter was observed for the Chairside group.
format Online
Article
Text
id pubmed-6803933
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-68039332019-11-18 Trueness of the Inner Surface of Monolithic Crowns Fabricated by Milling of a Fully Sintered (Y, Nb)-TZP Block in Chairside CAD–CAM System for Single-visit Dentistry Cho, Jun-Ho Yoon, Hyung-In Han, Jung-Suk Kim, Dae-Joon Materials (Basel) Article A single-visit zirconia restoration can be easily achieved if direct milling of a fully sintered zirconia block can be performed without much effort. However, no studies have yet been reported regarding the evaluation of the trueness of crown fabricated from chairside-milling of a fully sintered zirconia block in the chairside computer-aided design and computer-aided manufacturing (CAD–CAM) system for single-visit dentistry. This in vitro study aimed to evaluate the trueness of crowns fabricated by milling a fully sintered zirconia block in the chairside CAD–CAM system and investigate the clinical implications for single-visit chairside restoration. Crowns were fabricated either by chairside-milling a fully sintered block of niobium oxide containing yttria-stabilized tetragonal zirconia polycrystals ((Y, Nb)-TZP) without the sintering process (n = 12) in a chairside single-visit dentistry system (Chairside group) or by laboratory-milling a partially sintered 3 mol% block of yttria-stabilized tetragonal zirconia polycrystals (3Y-TZP) followed by the sintering process (n = 12) in a conventional laboratory system (Labside group). Crown fabrication time, milling tool diameter and the trueness of each crown were evaluated. All trueness values of both groups were within the clinically acceptable range, although a significant difference between the Chairside (43.0 ± 3.67 μm) and Labside groups (37.4 ± 2.41 μm) was observed (P < 0.05). Mean fabrication time was 0.52 h and 1.42 h for Chairside and Labside groups, respectively. A decrease in the tool diameter was observed for the Chairside group. MDPI 2019-10-05 /pmc/articles/PMC6803933/ /pubmed/31590370 http://dx.doi.org/10.3390/ma12193253 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Cho, Jun-Ho
Yoon, Hyung-In
Han, Jung-Suk
Kim, Dae-Joon
Trueness of the Inner Surface of Monolithic Crowns Fabricated by Milling of a Fully Sintered (Y, Nb)-TZP Block in Chairside CAD–CAM System for Single-visit Dentistry
title Trueness of the Inner Surface of Monolithic Crowns Fabricated by Milling of a Fully Sintered (Y, Nb)-TZP Block in Chairside CAD–CAM System for Single-visit Dentistry
title_full Trueness of the Inner Surface of Monolithic Crowns Fabricated by Milling of a Fully Sintered (Y, Nb)-TZP Block in Chairside CAD–CAM System for Single-visit Dentistry
title_fullStr Trueness of the Inner Surface of Monolithic Crowns Fabricated by Milling of a Fully Sintered (Y, Nb)-TZP Block in Chairside CAD–CAM System for Single-visit Dentistry
title_full_unstemmed Trueness of the Inner Surface of Monolithic Crowns Fabricated by Milling of a Fully Sintered (Y, Nb)-TZP Block in Chairside CAD–CAM System for Single-visit Dentistry
title_short Trueness of the Inner Surface of Monolithic Crowns Fabricated by Milling of a Fully Sintered (Y, Nb)-TZP Block in Chairside CAD–CAM System for Single-visit Dentistry
title_sort trueness of the inner surface of monolithic crowns fabricated by milling of a fully sintered (y, nb)-tzp block in chairside cad–cam system for single-visit dentistry
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6803933/
https://www.ncbi.nlm.nih.gov/pubmed/31590370
http://dx.doi.org/10.3390/ma12193253
work_keys_str_mv AT chojunho truenessoftheinnersurfaceofmonolithiccrownsfabricatedbymillingofafullysinteredynbtzpblockinchairsidecadcamsystemforsinglevisitdentistry
AT yoonhyungin truenessoftheinnersurfaceofmonolithiccrownsfabricatedbymillingofafullysinteredynbtzpblockinchairsidecadcamsystemforsinglevisitdentistry
AT hanjungsuk truenessoftheinnersurfaceofmonolithiccrownsfabricatedbymillingofafullysinteredynbtzpblockinchairsidecadcamsystemforsinglevisitdentistry
AT kimdaejoon truenessoftheinnersurfaceofmonolithiccrownsfabricatedbymillingofafullysinteredynbtzpblockinchairsidecadcamsystemforsinglevisitdentistry