Sains Malaysiana 47(4)(2018): 781-787

http://dx.doi.org/10.17576/jsm-2018-4704-17

 

Effects of Polishing Techniques on the Staining of Two Nano-Tooth Coloured Materials

(Kesan Penggilapan ke atas Pewarnaan Dua Bahan Tampalan Berwarna Gigi Nano)

 

KUI FEI TEO¹, ZURYATI AB-GHANI²* & ZAID HAMEED MOHAMMED ALI²

 

¹Pusat Pakar Pergigian Seremban, Pejabat Kesihatan Pergigian Daerah Seremban, Jln Za'aba,

70100 Seremban, Negeri Sembilan, Malaysia

 

²School of Dental Sciences, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan Darul Naim, Malaysia

 

Received: 11 May 2017/Accepted: 16 November 2017

 

ABSTRACT

 

Surface polishing affect the staining of nano-tooth coloured materials. Here we studied the effect of tea and coffee staining on polished nano-composite resin and nano-ormocers. Eighty-four discs (5 × 2 mm) of Filtek Z350 and Ceram X were fabricated using acrylic molds and polished with either: (1) Sof-lex (2) Enhance/Pogo (3) control (no polishing-Mylar). After polishing, the tests materials were immersed in either tea or coffee (n=7), for 48, 96 and 168 h at 37°C. The colour difference (ΔE) values were assessed with a spectrophotometer (Cecil CE 2021 UV/VIS), the data were analysed using Kruskal-Wallis Test. The results showed that polishing significantly affected the ΔE values of both materials (p<0.05). In all groups, Ceram X showed less staining than Filtek Z350. Both Filtek Z350 and Ceram X also reacted differently in coffee and tea. Significant ΔE values for Filtek Z350 obtained with different polishing techniques exposed to coffee in ascending order: Sof-lex < Enhance/Pogo < Mylar strip. For Ceram X, significant ΔE values obtained in exposure to tea in ascending order: Pogo < Mylar < Sof-lex. Mylar caused more staining in Filtek Z350 whilst Sof-Lex caused the least staining. However, in Ceram X, Enhance/Pogo caused the least staining. In conclusion, Ceram X is more colour stable than Filtek Z350. It may be suggested to always use the polishing system produced by the same company that produces the restorative material for better staining resistant.

 

Keywords: Nano-tooth coloured dental materials; polishing techniques; staining

 

 

ABSTRAK

 

Penggilap permukaan boleh mempengaruhi pewarnaan bahan tampalan berwarna gigi nano. Kajian ini dibuat  untuk mengesan pewarnaan teh dan kopi pada resin nano komposit dan nano-ormocers yang digilap. Lapan puluh empat cakera bersaiz 5 × 2 mm, yang dibuat daripada Filtek Z350 dan Ceram X menggunakan acuan akrilik, digilap dengan: (1) Sof-lex (2) Enhance/Pogo (3) kawalan (tiada penggilap-Mylar). Selepas penggilapan, bahan-bahan ujian direndam ke dalam teh atau kopi (n=7), selama 48, 96 dan 168 jam pada suhu 37°C. Perbezaan warna (ΔE) dinilai menggunakan spektrofotometer (Cecil CE 2021 UV/VIS), data dianalisis menggunakan Kruskal-wallis Test. Keputusan analisis menunjukkan penggilapan mempengaruhi nilai pewarnaan kedua-dua bahan tampalan berwarna gigi nano (p<0.05). Dalam semua kumpulan, Ceram X menunjukkan kesan perwarnaan yang lebih berbanding Filtek Z350. Filtek Z350 dan Ceram X juga bertindak balas secara berbeza dalam kopi dan teh. Perbezaan bacaan signifikan ΔE bagi Filtek Z350 di dalam kopi adalah seperti berikut: Sof-lex < Enhance/Pogo < Mylar strip manakala perbezaan bacaan signifikan ΔE di dalam teh untuk Ceram X adalah Pogo < Mylar < Sof-Lex. Penggunaan mylar strip sahaja ke atas Filtek Z350 menyebabkan lebih banyak pewarnaan, manakala Sof-Lex menyebabkan pewarnaan berkurangan. Penggunaan Enhance/Pogo ke atas Ceram X menyebabkan pewarnaan berkurangan. Kesimpulannya, Ceram X adalah lebih stabil dalam kesan pewarnaan berbanding dengan Filtek Z350. Cadangan mungkin boleh dibuat untuk sentiasa menggunakan sistem penggilap yang dihasilkan oleh syarikat yang sama yang menghasilkan bahan tampalan bagi mengekalkan warna lebih lama.

 

Kata kunci: Bahan tampalan warna gigi nano; pewarnaan; teknik penggilapan

 

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*Corresponding author; email: zuryati@usm.my