COMPARISON OF POLYMERIZATION SHRINKAGE IN METHACRYLATE AND SILORANE-BASED COMPOSITES CURED BY DIFFERENT LEDS

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PAHLEVAN AIOB; HASANI TABATABAEI MASOUMEH; ARAMI SAKINEH; ATAEI MOHAMMAD; VALIZADEH SARA

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Journal: Journal of Dental Medicine Year:2013 | Volume:26 | Issue:1 (74) Page(s): 27-32

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Title

COMPARISON OF POLYMERIZATION SHRINKAGE IN METHACRYLATE AND SILORANE-BASED COMPOSITES CURED BY DIFFERENT LEDS

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Keywords

POLYMERIZATIONQ3

COMPOSITE RESINQ3

SILORANEQ2

METHACRYLATEQ2

LED DENTAL CURING LIGHTSQ2

Abstract

Background and Aims: POLYMERIZATION shrinkage in METHACRYLATE-based composite is one of the most important factors in composite restorations failure. SILORANE-based composite is introduced to compensate this drawback and claimed to have low shrinkage. The aim of this study was to evaluate the POLYMERIZATION shrinkage of these two composites.Materials and Methods: In this experimental study, 5 disk shape samples for each resin composites were placed in the centre of metallic ring bonded to microscopic glass slab. Top surface of ring was covered by glass cover slip. Glass slab and sample were placed on a special LVDT holder in order to light cure from bottom surface and to measure the POLYMERIZATION shrinkage. In this study, Deflecting Disk method and LVDT (linear variable differential transducer) was used for dimensional change measurement of resin composites. In this study two LED curing units were used for composite POLYMERIZATION.Results: Mean of POLYMERIZATION shrinkage in Z250 cured with LED and High Power LED was 11.15±0.08 mm and 11.51±0.17 mm, respectively (P=0.094), and in P90 cured with LED and High Power LED was 1.08±0.06μm and 1.16±0.12 mm, respectively (P=0.019).Conclusion: SILORANE base composite (P90) showed significantly less POLYMERIZATION shrinkage than METHACRYLATE base composite (Z250). For the two types of composite, there was no significant difference between the two curing unites in POLYMERIZATION shrinkage.

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APA: Copy

PAHLEVAN, AIOB, HASANI TABATABAEI, MASOUMEH, ARAMI, SAKINEH, ATAEI, MOHAMMAD, & VALIZADEH, SARA. (2013). COMPARISON OF POLYMERIZATION SHRINKAGE IN METHACRYLATE AND SILORANE-BASED COMPOSITES CURED BY DIFFERENT LEDS. JOURNAL OF DENTAL MEDICINE, 26(1 (74)), 27-32. SID. https://sid.ir/paper/25452/en

Vancouver: Copy

PAHLEVAN AIOB, HASANI TABATABAEI MASOUMEH, ARAMI SAKINEH, ATAEI MOHAMMAD, VALIZADEH SARA. COMPARISON OF POLYMERIZATION SHRINKAGE IN METHACRYLATE AND SILORANE-BASED COMPOSITES CURED BY DIFFERENT LEDS. JOURNAL OF DENTAL MEDICINE[Internet]. 2013;26(1 (74)):27-32. Available from: https://sid.ir/paper/25452/en

IEEE: Copy

AIOB PAHLEVAN, MASOUMEH HASANI TABATABAEI, SAKINEH ARAMI, MOHAMMAD ATAEI, and SARA VALIZADEH, “COMPARISON OF POLYMERIZATION SHRINKAGE IN METHACRYLATE AND SILORANE-BASED COMPOSITES CURED BY DIFFERENT LEDS,” JOURNAL OF DENTAL MEDICINE, vol. 26, no. 1 (74), pp. 27–32, 2013, [Online]. Available: https://sid.ir/paper/25452/en

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