Internal bleaching presented to you by hossam faisal 2. Download citation update on materials used in intracoronal bleaching intracoronal bleaching has emerged as a popular technique to bleach discoloured, endodontically treated anterior teeth. The teeth were instrumented with waveone system and obturated with gutta percha and divided into four groups n 27 according to the bleaching materials used. The aim of this in vitro study was to compare the bleaching efficacy of 10% carbamide peroxide, 10% hydrogen peroxide and 2g sodium perborate as bleaching agents on the artificially discolored human primary maxillary. Intracoronal bleaching of endodontically treated teeth. An in vitro comparison of the bleaching efficacy of 35%. Internal bleaching is an effective and minimally invasive way of bleaching nonvital teeth.
This prospective study was done at the restorative dentistry. In the present in vitro study, the efficacy of intracoronal bleaching was evaluated after preparation of dentin with 37% phosphoric acid and er,cr. Although the bleaching agents used are effective in this process, chemical alterations in dentin structure with subsequent changes in biomechanical properties have been reported, especially the decrease in its microhardness. Camilo1 1department of dentistry, dental school, state university of montes claros, minas gerais, brazil. Retrograde pulpitis external root resorption 0 explanations. Two patients of mine have a central incisor that has had endo done.
Dentin bond strength and nanoleakage of the adhesive. Bleaching is an established, simple, costeffective and conservative method for improving the color of the discolored teeth. Causes of intrinsic local stains, indicating nonvital bleaching 5. Mta was set in acrylic molds with a 4 mm high central hole and a 6 mm diameter. The association of external cervical resorption with. Pdf intracoronal bleaching of discolored nonvital teeth. Although intracoronal bleaching is the treatment of choice, the prognosis, however, depends on the type of sealer and duration of discoloration 49.
Feasibility of nonthermal atmospheric pressure plasma for. Which of the following is the most probable postoperative complication of intracoronal bleaching for a tooth that has not been adequately obturated. Which of the following is the most probable postoperative. Microhardness of intracoronal dentin exposed to bleaching. Heithersay analyzed cervical resorption cases and reported that 24. The bleaching procedure used was the same as that for group 2. Effect of intracoronal bleaching agents on ultrastructure.
Thirty extracted primary canines were stained using rabbit blood and randomly divided into two groups of 15 teeth each. Effect of acid etching and laser treatment of dentin. The purpose of this study was to evaluate, in vitro, the efficacy of 10 percent carbamide peroxide used as an intracoronal bleaching agent in bloodstained primary teeth. To avoid such a result, many researchers proposed that the use of hydrogen peroxide for intracoronal bleaching purpose should be avoided and protection of cervical and periodontal tissues must be emphasized in bleaching treatments. Fracture strength of incisor crowns after intracoronal. The lower front tooth had extruded because of severe gum disease. The lightening of the color of a tooth through the application of a chemical agent to oxidize the organic pigmentation in the tooth is referred to as bleaching 4. Pdf this clinical study compared the effectiveness of bleaching nonvital teeth with an open pulp chamber during bleaching using 10%. Current techniques for intracoronal bleaching of stained rootfilled teeth employ oxidative bleaching with hydrogen peroxide. Effect of intracoronal bleaching on external cervical root. Intracoronal bleaching of endodontically treated teeth there are many situations to perform intracoronal bleaching. Treatment considerations for dentists and their patients ada council on scientific affairs introduction over the past two decades, tooth whitening or bleaching has become one of the most popular esthetic dental treatments note.
Intracoronal bleaching of discolored nonvital teeth using. Intracoronal bleaching is a conservative alternative to the. Recently, intracoronal bleaching of pulpless discolored teeth can be performed with the association of laser irradiation to hydrogen and carbamide peroxide and can even be accomplished in one session. Before and after photos on extracoronal and intracoronal teeth splinting performed in our gum disease treatment office. Extraradicular diffusion of hydrogen peroxide and ph. The application of nonthermal atmospheric pressure plasma to intracoronal bleaching could be a novel and efficient therapy in the bleaching of haemorrhagically stained teeth. Internal bleaching is commonly used in discolored endodontically treated anterior teeth. Extracoronal and intracoronal teeth splinting nyc dentist. Intracoronal definition of intracoronal by medical. Pdf clinical efficacy of 35% carbamide peroxide and.
With increasing insistence on conserving the integrity of remaining tooth structure, it is the responsibility of the clinician to contain restorations only to the extent of lost tooth structure polesel, 2014. A wire and bonding splint was placed behind these lower front teeth and then the incisal edge of this tooth was reduced to make it level with. Several techniques have been used within the last 170 years to lighten discolored endodontically treated teeth. However, it has been shown that hydrogen peroxide and hydroxyl radicals, the byproducts of the bleaching process, diffuse from the pulp chamber to the. Effects of different intracoronal bleaching methods on. Abstract intracoronal bleaching of nonvital teeth with 30% hydrogen peroxide is occasionally associated with external cervical root resorption. Intracoronal dentin specimens were exposed to bleaching b, bleaching and light activation bl, or no bleaching nb, followed by f2%, f5%, or no exposure nf. The bond strengths returned to normal levels with the sa applications or by waiting 2 weeks, regardless of the application period of. Clinical reports3444 and histologic studies30,31,45 have shown that intracoronal bleaching may induce external root resorption table 163 and figure 169. Bleaching agents may affect surface properties of mineral trioxide aggregate mta as a coronal barrier. The objective of this study was to compare the efficacy and safety of 35% carbamide peroxide cp and sodium perborate sp as intracoronal bleaching agents in discoloured nonvital teeth. Intracoronal bleaching of discolored nonvital teeth article pdf available in operative dentistry 284. For example, stains made by metallic ions are difficult to remove with bleaching treatment. Aim to evaluate the extraradicular ph and hydrogen peroxide hp diffusion when either 35% carbamide peroxide cp, 35% hp or sodium perborate sp is used for intracoronal bleaching of arti.
Intracoronal bleaching of discoloured intact pulpless anterior teeth with 3%30% hydrogen peroxide hp is considered an ideal choice to refurbish esthetics as well as. T1 comparison of 10% carbamide peroxide and sodium perborate for intracoronal bleaching. Bleaching teeth treated endodontically long fr ner i c ef cacy of intracoronal bleaching clin north am 27 657 670 1983. Ysgg laser separately and compared with the conventional method in which no surface preparation is used. Intracoronal bleaching was performed with 37% carbamide peroxide whiteness super endo, dentscare. The relationship of cementum to the enamel at the cementoenamel junction may have clinical significance. The purpose of this study was to investigate surface properties of mta after exposure to intracoronal bleaching agents. This is the first study to report the effect of hpspe combination on the marginal integrity of adhesive permanent restorations following intracoronal bleaching. In the walking bleach technique, the most commonly used bleaching agents are hydrogen peroxide and sodium perborate, either alone or in combination. Fracture strength of incisor crowns after intracoronal bleaching with sodium percarbonate. This is probably caused by the oxidizing agent, particulary 30 to 35% hydrogen peroxide. The exact mechanism by which bleaching induced root resorption occurs is not yet fully understood. Although some studies investigated the efficacy of laser irradiation during intracoronal bleaching, no study has been conducted to investigate the.
Internal whitening or intracoronal whitening offers some advantages over more invasive treatments, as. The teeth were instrumented with waveone system and obturated with gutta percha and divided into four groups according to the bleaching materials used. Intracoronal whitening of endodontically treated teeth. In vitro assessment of a gel base containing 2% chlorhexidine as a sodium perborates vehicle for intracoronal bleaching of discolored teeth. Intracoronal bleaching was performed with sodium perborate sultan healthcare, englewood, nj. A commonly cited risk associated with it is external cervical resorption ecr, which is a potentially.
The efficacy of bleaching depends on the penetration of the bleaching agent into dentinal tubules. Microhardness of intracoronal dentin exposed to bleaching and fluoride treatment. Both bleaching treatments significantly reduced the bond strength to the dentin in the self. Sealing ability of mta used as cervical barrier in. After obturation, a 2 mm intermediate base was placed 1 mm below the buccal amelo. Pdf microhardness of intracoronal dentin exposed to. An in vitro of 35% carbamide peroxide with established. This report shows a clinical case of an endodontically treated tooth submitted to bleaching using led light and infrared lllt therapy. Intracoronal bleaching is an established, simple, costeffective, and conservative method of improving the shade of discolored anterior teeth that have received root canal treatment. Effect of intracoronal bleaching on external cervical root resorption author links open overlay panel diane heller dmd 1.
The implication of the study is that the risk of microleakage is increased when resin restorations are done immediately after bleaching. Tooth bleaching techniques today mostly employ hydrogen peroxide as the active agent. Evaluation of extraradicular diffusion of hydrogen. Marginal integrity of aesthetic restorations following. The successful use of 37% carbamide peroxide gel during the. Extra radicular diffusion of hydrogen peroxide associated with intracoronal teeth bleaching was evaluated. Aprtl 1992 effect of intracoronal bleaching on external cervical root resorption diane heller, dmd, joseph. Extracoronal definition of extracoronal by medical. Comparison of the bleaching efficacy of three different. Bs decreased immediately after intracoronal bleaching for both sound and pre. Aim to evaluate the bleaching efficacy of 35% carbamide peroxide, 35% hydrogen peroxide and sodium perborate for intracoronal bleaching of root filled discoloured teeth methodology extracted premolars were artificially stained using whole blood then root canal treatment was performed. Comparison of 10% carbamide peroxide and sodium perborate. N2 the purpose of this study was to compare 10% carbamide peroxide to the combination of sodium perborate and water as intracoronal bleaching.
1484 246 778 716 225 1663 602 1329 1152 631 1395 1291 1101 743 1657 1016 1033 735 1384 724 385 1044 1581 272 1266 341 525 177 385 401 1315 233 106 662 628