Abrasive machining of porcelain and zirconia with a dental handpiece

Yin, Ling; Jahanmir, Said; Ives, L. K.

doi:10.1016/s0043-1648(03)00195-9

Cited by 115 publications

(109 citation statements)

References 24 publications

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“…Their ability to yield relatively smooth surfaces, which minimizes plaque deposition and tissue inflammation, is another important reason for their preference in dental applications. Therefore, the degree of surface roughness of dental ceramics and its effect on biocompatibility have been widely studied [1][2][3][4][5][6][7][8][9]. Surface roughness also determines the degree of abrasion caused by one tooth on another.…”

Section: Introductionmentioning

confidence: 99%

Effect of various treatment and glazing (coating) techniques on the roughness and wettability of ceramic dental restorative surfaces

Aksoy¹,

Polat

et al. 2006

Colloids and Surfaces B: Biointerfaces

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Surface treatment procedures such as grinding and polishing are needed to provide the ceramic dental restorative materials with proper fitting and occlusion. The treated surfaces are customarily glazed to improve the strength and smoothness. Though smoothness and wetting of the dental surfaces are important to minimize bacterial plaque retention, influence of the surface treatment and glazing procedures on the final surface roughness and its correlation to wettability are overlooked.In this work, effect of various treatment (diamond fraising, stoning, sanding and aluminum oxide and rubber polishing) and glazing (auto and overglazing) techniques on the final roughness and the resulting wettability of dental ceramic surfaces were investigated using scanning electron microscopy (SEM) observations and atomic force microscopy (AFM) scans, 75 scans per sample. The surfaces were characterized and assigned an average roughness measure, R a . The wettability of the same surfaces was evaluated using micro-contact angle measurements (25 micro-bubbles placed on a grid on each surface) to correlate the final surface roughness and wettability.The results show that overglazing prevails over surface irregularities from different treatment procedures and provides homegeneously smooth surfaces with mean R a < 10 nm. It also produces uniformly wetted surfaces with low contact angles around 20 • . The autoglazed surfaces are less smooth (mean R a around 50 nm) and displays sporadic topographic irregularities. They display larger and less uniform contact angles ranging between 35 • and 50 • . The results suggest that overglazing should be preferred after surface treatment to obtain a smooth and well-wetted dental ceramic surface.

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Section: Introductionmentioning

confidence: 99%

Effect of various treatment and glazing (coating) techniques on the roughness and wettability of ceramic dental restorative surfaces

Aksoy¹,

Polat

et al. 2006

Colloids and Surfaces B: Biointerfaces

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show abstract

“…The rougher the diamond grit the more severe the chip damage which will depend on the type of ceramic. Hence, a 180 m coarse diamond mounted on a turbine at 260,000 rpm and 2 N load induced severe edge chip damage on a glass-infiltrated alumina but only minor to negligible chipping on zirconia [13,17,18]. The threshold diamond grit size for negligible edge chip damage on a glass-infiltrated alumina was reported to be 40 m [17].…”

Section: Results 3y-tzp Wasmentioning

confidence: 99%

“…dental technician and dentist. In that respect, extensive research was performed by Yin et al [13][14][15][16][17][18][19] reporting on edge chip damage of several dental ceramics created by grinding with diamond burs under controlled pressure, feed rate, grit size (180, 40, 10 m) and water coolant. Her findings indicated that the average chip width decreased with the fracture toughness of the ceramic material except for a glass-infiltrated alumina.…”

Section: Results 3y-tzp Wasmentioning

confidence: 99%

Grinding damage assessment on four high-strength ceramics

et al. 2016

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d e n t a l m a t e r i a l s 3 2 ( 2 0 1 6 ) [171][172][173][174][175][176][177][178][179][180][181][182] Available online at www.sciencedirect.com ScienceDirect j o u r n a l h o m e p a g e : w w w . i n t l . e l s e v i e r h e a l t h . Conclusions. Reshaping a ceramic framework post sintering should be avoided with final diamond grits of 75 m as a general rule. For alumina and the glass-infiltrated alumina, using a 54 m diamond still induces chip damage which may affect strength. Removal of such damage from a reshaped framework is mandatory by using sequentially finer diamonds prior to the application of veneering ceramics especially in critical areas such as margins, connectors and inner surfaces.

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“…Given that the nanohardness values for the fiber glass and the zirconia ferrule are 9 GPa and 14 GPa [2], respectively, machining of these ceramics often involves diamond abrasives, which are much harder than most ceramics, in order to achieve material removal. However, diamond abrasives unavoidably induce microscratches in the machined ceramic surfaces [8][9][10]. Thus, efforts have been made to develop applications of soft abrasives to improve the surface quality, including silica, iron oxide and magnesium oxide for polishing of sapphire, quartz and silicon single crystal, in which the mechanochemical mechanisms were considered to function [11][12][13][14].…”

Section: Discussionmentioning

confidence: 99%

Influences of nanoscale abrasive suspensions on the polishing of fiber-optic connectors

Yin

Huang

Chen

2004

Int J Adv Manuf Technol

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Effects of different nanoscale abrasive suspensions on the geometrical quality including fiber and ferrule surface roughness, fiber height, radius of curvature and apex offset, and the optical performance in terms of return and insertion losses in polishing of fiber connectors were investigated using a commercial fiber-connector polishing machine. Significant differences in geometrical and optical qualities were found among the suspensions investigated. The results indicate that a colloidal silica suspension of grit size of 50 nm gave a much better geometrical quality than conventionally used alcohol, consequently yielding a more attractive optical performance than the designated return loss of 45 dB and insertion loss of 0.3 dB.

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Abrasive machining of porcelain and zirconia with a dental handpiece

Cited by 115 publications

References 24 publications

Effect of various treatment and glazing (coating) techniques on the roughness and wettability of ceramic dental restorative surfaces

Effect of various treatment and glazing (coating) techniques on the roughness and wettability of ceramic dental restorative surfaces

Grinding damage assessment on four high-strength ceramics

Influences of nanoscale abrasive suspensions on the polishing of fiber-optic connectors

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