Sealing ability of materials used as protective cervical barrier in internal tooth bleaching

Abstract

Introduction: The use of a protective cervical barrier (PCB) is very well established to perform a safe internal bleaching; however, there is still no consensus on which material has the best sealing ability. Objective: This in vitro study aimed to evaluate the apical and linear sealing of different PCB materials placed during internal bleaching. Material and methods: This study had two study factors: PCB positioning, divided at two levels (cement-enamel junction [CEJ] Response variables were apical and linear sealing obtained through dye penetration and analyzed with a digital microscope. Data were subjected to two-way analysis of variance followed by Tukey test (p<0.05). Results: The main factor for both apical and linear sealing was the type of material (p<0.01), regardless of their position. RC and ZPC presented the worst sealing values (p<0.05). The Spearman

Colorimetric Comparison of Internal Bleaching with and without Removing Mineral Trioxide Aggregate (MTA) on Induced Coronal Tooth Discoloration by MTA

“…Various materials such as glass ionomer, MTA, CEM-cement, and resin-modified glass ionomer have been suggested as cervical barriers [ 35 ]. A suitable cervical barrier should have the ability to seal properly and be removed easily after bleaching without any negative effects on the bond of restoration [ 35 , 36 ].…”

Association between bleaching techniques for the treatment of teeth with chromatic alteration - Case report

“…Therefore, in cases where there only exists chromatic change, as is the case reported here, internal dental bleaching is an advantageous option. External root resorption is one of the possible adverse effects of internal bleaching described in the literature (Neuvald & Consolaro, 2000;Ordoñéz-Aguilera et al, 2017). This resorption is assumed to be related to the release and penetration of the reactive molecules of hydrogen peroxide in the dentinal tubules, reaching the periodontal tissues, which triggers an inflammatory reaction (Abbott & Heah, 2009;Lado EA, Stanley HR, 1983).…”

“…To avoid external root resorption, it is recommended to make a cervical barrier prior to the insertion of the bleaching material, which would prevent the flow of the product to the root canal and, consequently, the inflammatory reaction (Abbott & Heah, 2009;Ordoñéz-Aguilera et al, 2017). The literature describes the success of the technique in a study with 255 teeth treated with internal bleaching with the making of a cervical protective barrier, in which no case of external root resorption was observed (Abbott & Heah, 2009).…”

<p>Penatalaksanaan diskolorisasi gigi pasca perawatan endodontik dengan teknik walking bleach</p><p>Management of post-endodontic tooth discolouration with the walking bleach technique</p>

“…Untuk menghindari pigmentasi lebih lanjut, lapisan pelindung harus berwarna putih atau berwarna gigi. 1,2 Penelitian yang dilakukan oleh Ordoñéz-Aguilera et al 9 merekomendasikan digunakannya GIC sebagai barrier bleaching internal karena mempunyai sealing ability yang baik dan dapat digunakan sebagai base untuk restorasi akhir. Penelitian tersebut juga menunjukkan bahwa resin composite dan zinc fosfat memiliki sealing ability yang buruk sehingga harus dihindari sebagai barrier bleaching internal.…”

“…Resorpsi akar servikal juga lebih sering terjadi pada gigi pasca trauma, pasien usia muda, penggunaan konsentrasi tinggi hidrogen peroksida yang dikombinasikan dengan panas, penempatan barrier yang tidak mumpuni, dinding servikal tipis, dan adanya microcrack yang terlihat pada daerah servikal. 2,9,10 Resiko resorpsi akar servikal dapat dikurangi dengan aplikasi kalsium hidroksida intrakoronal selama 7-14 hari. Penelitian in vitro menunjukkan bahwa penempatan pasta bleaching pada kamar pulpa dapat menurunkan pH hingga 6,5 pada permukaan akar gigi yang memicu terjadinya aktivitas osteoklas dan menyebabkan resorpsi akar servikal.…”