IRIS publication 66826522
Effect of pre-heating on the viscosity and microhardness of a resin composite
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TY - JOUR - Lucey, S; Lynch, CD; Ray, NJ; Burke, FM; Hannigan, A - 2010 - Unknown - Journal of Oral Rehabilitation - Effect of pre-heating on the viscosity and microhardness of a resin composite - Validated - Altmetric: 2 () - 37 - 4 - 278 - 282 - P>The effect of pre-heating resin composite on pre-cured viscosity and post-cured surface hardness was evaluated. Groups of uncured specimens were heated to 60 degrees C and compared with control groups (24 degrees C) with respect to viscosity and surface hardness. Mean (SD) viscosities of the pre-heated specimens (n=15) were in the range of 285 (13)-377 (11) (Pa) compared with 642 (35)-800 (23) (Pa) at ambient temperature. There was a statistically significant difference between the two groups (P < 0 center dot 001). Mean (SD) Vickers microhardness (VHN) of the pre-heated group (n=15) was 68 center dot 6 (2 center dot 3) for the top surface and 68 center dot 7 (1 center dot 8) for the bottom surface measured at 24 h post curing (specimen thickness=1 center dot 5 mm). The corresponding values for the room temperature group were 60 center dot 6 (1 center dot 4) and 59 center dot 0 (3 center dot 5). There was a statistically significant difference between corresponding measurements taken at the top and bottom for the pre-heated and room temperature groups (P < 0 center dot 001). There was no significant difference between top and bottom measurements within each group. Pre-heating resin composite reduces its pre-cured viscosity and enhances its subsequent surface hardness. These effects may translate as easier placement together with an increased degree of polymerization and depth-of-cure. - 10.1111/j.1365-2842.2009.02045.x DA - 2010/NaN ER -
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@article{V66826522, = {Lucey, S and Lynch, CD and Ray, NJ and Burke, FM and Hannigan, A}, = {2010}, = {Unknown}, = {Journal of Oral Rehabilitation}, = {Effect of pre-heating on the viscosity and microhardness of a resin composite}, = {Validated}, = {Altmetric: 2 ()}, = {37}, = {4}, pages = {278--282}, = {{P>The effect of pre-heating resin composite on pre-cured viscosity and post-cured surface hardness was evaluated. Groups of uncured specimens were heated to 60 degrees C and compared with control groups (24 degrees C) with respect to viscosity and surface hardness. Mean (SD) viscosities of the pre-heated specimens (n=15) were in the range of 285 (13)-377 (11) (Pa) compared with 642 (35)-800 (23) (Pa) at ambient temperature. There was a statistically significant difference between the two groups (P < 0 center dot 001). Mean (SD) Vickers microhardness (VHN) of the pre-heated group (n=15) was 68 center dot 6 (2 center dot 3) for the top surface and 68 center dot 7 (1 center dot 8) for the bottom surface measured at 24 h post curing (specimen thickness=1 center dot 5 mm). The corresponding values for the room temperature group were 60 center dot 6 (1 center dot 4) and 59 center dot 0 (3 center dot 5). There was a statistically significant difference between corresponding measurements taken at the top and bottom for the pre-heated and room temperature groups (P < 0 center dot 001). There was no significant difference between top and bottom measurements within each group. Pre-heating resin composite reduces its pre-cured viscosity and enhances its subsequent surface hardness. These effects may translate as easier placement together with an increased degree of polymerization and depth-of-cure.}}, = {10.1111/j.1365-2842.2009.02045.x}, source = {IRIS} }
Data as stored in IRIS
AUTHORS | Lucey, S; Lynch, CD; Ray, NJ; Burke, FM; Hannigan, A | ||
YEAR | 2010 | ||
MONTH | Unknown | ||
JOURNAL_CODE | Journal of Oral Rehabilitation | ||
TITLE | Effect of pre-heating on the viscosity and microhardness of a resin composite | ||
STATUS | Validated | ||
TIMES_CITED | Altmetric: 2 () | ||
SEARCH_KEYWORD | |||
VOLUME | 37 | ||
ISSUE | 4 | ||
START_PAGE | 278 | ||
END_PAGE | 282 | ||
ABSTRACT | P>The effect of pre-heating resin composite on pre-cured viscosity and post-cured surface hardness was evaluated. Groups of uncured specimens were heated to 60 degrees C and compared with control groups (24 degrees C) with respect to viscosity and surface hardness. Mean (SD) viscosities of the pre-heated specimens (n=15) were in the range of 285 (13)-377 (11) (Pa) compared with 642 (35)-800 (23) (Pa) at ambient temperature. There was a statistically significant difference between the two groups (P < 0 center dot 001). Mean (SD) Vickers microhardness (VHN) of the pre-heated group (n=15) was 68 center dot 6 (2 center dot 3) for the top surface and 68 center dot 7 (1 center dot 8) for the bottom surface measured at 24 h post curing (specimen thickness=1 center dot 5 mm). The corresponding values for the room temperature group were 60 center dot 6 (1 center dot 4) and 59 center dot 0 (3 center dot 5). There was a statistically significant difference between corresponding measurements taken at the top and bottom for the pre-heated and room temperature groups (P < 0 center dot 001). There was no significant difference between top and bottom measurements within each group. Pre-heating resin composite reduces its pre-cured viscosity and enhances its subsequent surface hardness. These effects may translate as easier placement together with an increased degree of polymerization and depth-of-cure. | ||
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DOI_LINK | 10.1111/j.1365-2842.2009.02045.x | ||
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