Sains Malaysiana 41(8)(2012):1051 –1056

Effectiveness of Self-Etching Primer Versus Conventional Etch and Bond

Technique in Fixed Orthodontic Treatment

(Keberkesanan Teknik Primer Pengasidan Sendiri Berbanding Teknik Pengasidan

serta Pengikatan Konvensional pada Rawatan Ortodontik Tetap)

A.    Noor Sam & A.A.A. Asma*

Department of Orthodontic, Faculty of Dentistry, Universiti Kebangsaan Malaysia

Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia

Received: 20 April 2011 / Accepted: 15 March 2012

ABSTRACT

A good adhesive is an important factor to consider in orthodontic bonding. Frequent bracket failure prolongs treatment duration and causes inconvenience to patient and operator. This study aimed to compare the effectiveness of two bonding agents, i.e. the self etching primer (SEP) and the conventional etch and bond (CEB) by monitoring the incidence, time and sites of bracket failure. Eighty orthodontic patients were recruited after informed consent were obtained. A randomized split mouth technique was used where one side was bonded with CEB agent, while the other side was bonded using SEP agent. All bonded brackets were examined every 4 weeks for 20 months. Incidence of bracket failure was noted and comparison between the two groups was done using paired t-test. Time and frequent site of failure were also assessed. Out of 1314 brackets, only 33 brackets were debonded with 16 from SEP group and 17 from CEB group which statistically insignificant (p>0.05). Almost 55% of bracket failure occurred during the first 3 months after bonding for both adhesives with lower premolars was most the frequent site to fail in both adhesives (39.4%). Bracket bonded on the left side failed significantly compared to the right side. In conclusion, both self-etching primer and conventional acid-etch bonding agents are equally effective in retaining brackets clinically. Bracket failure mostly occurres during the first 3 months after bonding. The premolar brackets and the left side are mostly debonded when compared to other sites.

Keywords: Bonding agent; bracket failure; orthodontic treatment; self etching primer

ABSTRAK

Perlekatan yang baik adalah faktor penting yang perlu diberikan perhatian di dalam pengikatan ortodontik. Braket yang kerap tertanggal akan memanjangkan tempoh rawatan dan menyebabkan ketidakselesaan kepada pesakit dan perawat. Tujuan kajian ini adalah untuk melihat keberkesanan dua agen pengikat iaitu primer pengasidan sendiri dan pengasidan dan pengikatan konvensional dengan memerhatikan kejadian, masa dan tempat braket tertanggal. Lapan puluh orang pesakit ortodontik terlibat di dalam kajian ini setelah mendapat kebenaran. Teknik split mouth secara rawak telah digunakan dengan sebahagian mulut menggunakan agenCEB dan sebahagian lagi menggunakan agenSEP. Semua braket akan dipantau setiap 4 minggu sehingga tempoh 20 bulan. Kejadian braket tertanggal akan direkod dan perbandingan antara kedua-dua kumpulan akan dibuat menggunakan paired t-test. Masa dan tempat yang kerap braket tertanggal juga dinilai. Daripada 1314 braket, hanya 33 braket yang tertanggal, dengan 16 daripadaSEP dan 17 dariCEB dan tiada perbezaan statistik yang signifikan antara keduanya (p>0.05). Hampir 55% braket tertanggal pada 3 bulan pertama selepas perlekatan dan braket premolar bawah paling kerap tertanggal bagi kedua-dua agen perlekatan (39.4%). Braket yang dilekatkan pada sebelah kiri tanggal secara signifikan berbanding sebelah kanan. Kesimpulannya, kedua-dua agen perlekatan SEP dan CEB adalah berkesan untuk perlekatan braket secara klinikal. Kegagalan braket paling banyak berlaku pada tempoh 3 bulan pertama. Braket pada gigi premolar dan di sebelah kiri adalah tempat yang paling kerap tertanggal.

Kata kunci: Agen perlekatan; kegagalan braket; rawatan ortodontik; primer pengasidan sendiri

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*Corresponding author; email: asmaabdullah@yahoo.com