Incidence of external root resorption and esthetic results in 58 bleached pulpless teeth (original) (raw)
Related papers
Incidence of invasive cervical resorption in bleached root-filled teeth
Australian Dental Journal, 1994
lnvasive cervical resorption, a form of external root resorption, has been reported to be associated with intra-coronal bleaching of root-filled teeth and this has raised concerns about carrying out such bleaching procedures. The purpose of the present study was to examine the incidence of invasive cervical resorption in root-filled teeth which had been bleached using a standardized technique. Three observers examined records and radiographs from a total of 158 patients, whose bleaching treatment had been carried out in a specialist endodontic practice. The sample comprised 204 teeth with a review period of between 1 and 19 years. One-hundredand-fifty-one teeth (77.94 per cent) had an associated history of traumatic injury. All teeth had been treated with a combination of thermocatalytic and 'walking bleach' procedures using 30 per cent hydrogen peroxide. In 54.41 per cent of teeth, guttapercha and AH26 root-fillings were kept at the height of the cemento-enamel junction while 18.63 per cent were below and 26.96 per cent were above the CEJ. Sealing cement was not placed over the gutta-percha and AH26 root-fillings in any of the teeth in the study. It was found that a total of four teeth from the sample group (1.96 per cent) had developed invasive cervical resorption during the review period. All of these teeth had a history of traumatic injury and the level of gutta-percha was at the CEJ. The incidence of resorption found in this study of root-filled teeth using a combined thermocatalytic and 'walking bleach' technique is lower than previously reported and indicates a relatively low risk of invasive cervical resorption using the technique outlined.
Bleaching of Non Vital Anterior Tooth, Noninvasive Technique: A Case Report
Discoloration of the anterior tooth, can result in considerable cosmetic detriment in patients. Treatment of such cases pose challenge for the dental practitioners. A variety of treatment options for discolored non vital teeth are bleaching, crowns or veneers. Bleaching offers a simple and conservative approach in removal of intrinsic stain. This article describes a case of non vital bleaching which was performed on a root canal treated tooth with no reversible discoloration or cervical root resorption.
Randomized clinical trial of 2 nonvital tooth bleaching techniques: A 1-year follow-up
The Journal of Prosthetic Dentistry, 2017
Central (69%) and lateral (20%) maxillary incisors are the teeth most affected by trauma 1 and may be discolored because of the deposition of black ferric sulfide in the dentin tubules after hemolysis of red blood cells and/ or when endodontic filling materials are left in the pulp chamber for extended periods. 2 For patients with discolored endodontically treated teeth, intracoronal bleaching is a conservative esthetic treatment that may delay additional restorative treatment. 3 However, external cervical resorption has been reported after intracoronal bleaching with hydrogen peroxide (HP). 4,5 This foreign body reaction and hard tissue destruction at the cementoenamel junction (CEJ) area has been associated with the diffusion of HP through dentin tubules and cementum microperforations. Moreover, resorptions seem related to higher concentrations of the bleaching agent and longer exposure times. 6 In addition, the application of heat to accelerate the bleaching effect (the so-called thermocatalytic technique) has also resulted in cervical resorption. 7-17 However, long-term 16-and 19-year follow-ups have shown that resorption can be avoided or minimized to 1.9% of teeth 18,19 when a cervical biomechanical seal is placed to prevent the diffusion of bleaching agent to the
Review Article Nonvital Tooth Bleaching: A Review of the Literature and Clinical Procedures
Tooth discoloration varies in etiology, appearance, localization, severity, and adhesion to tooth structure. It can be defined as being extrinsic or intrinsic on the basis of localization and etiology. In this review of the literature, various causes of tooth discoloration, different bleaching materials, and their applications to endodontically treated teeth have been described. In the walking bleach technique the root filling should be completed first, and a cervical seal must be established. The bleaching agent should be changed every 3-7 days. The thermocatalytic technique involves placement of a bleaching agent in the pulp chamber followed by heat application. At the end of each visit the bleaching agent is left in the tooth so that it can function as a walking bleach until the next visit. External bleaching of endodontically treated teeth with an in-office technique requires a high concentration gel. It might be a supplement to the walking bleach technique, if the results are not satisfactory after 3-4 visits. These treatments require a bonded temporary filling or a bonded resin composite to seal the access cavity. There is a deficiency of evidence-based science in the literature that addresses the prognosis of bleached nonvital teeth. Therefore, it is important to always be aware of the possible complications and risks that are associated with the different bleaching techniques. (J Endod 2008; 34:394 -407)
External root resorption after bleaching: A case report
Oral Surgery, Oral Medicine, Oral Pathology, 1991
COLLEGE OF DENTISTRY, UNIVERSITY OF KING SAUD An external root resorption occurred after bleaching and was diagnosed radiographically in a 26-year-old female dental assistant. The resorption was noticed 6 months after bleaching. The involved tooth had no history of trauma. An attempt to stop the resorption by using calcium hydroxide failed. The perforation was corrected surgically with amalgam.
Response of human pulps after professionally applied vital tooth bleaching
International Endodontic Journal, 2010
Aim To evaluate in vivo the microscopic pulpal response in sound human premolar teeth subjected to vital tooth bleaching with a 38% hydrogen peroxide (H 2 O 2) bleaching gel (Opalescence X-tra Boost) catalysed or not by a halogen light source. Methodology Twelve pairs of sound maxillary and/ or mandibular premolar teeth from 12 to 18-year-old patients were selected and randomly assigned to the following experimental (n = 10) and control (n = 4) groups: group 1: bleaching gel + halogen light; group 2: bleaching gel; group 3: no treatment (control). The teeth were extracted 2-15 days after bleaching and were subjected to routine laboratory processing for histological analysis of the pulpal response under light microscopy. Results In almost all specimens of the experimental groups, the pulp tissue exhibited histological characteristics of normality. Only one specimen in each group exhibited some dilated and congested blood vessels among a discrete number of mononuclear inflammatory cells in the peripheral pulp region related to the buccal surface of the tooth. These specimens had a slight disruption to the odontoblastic layer, which characterized discrete tissue disorganization. Some deposition of reactionary dentine occurred in only one specimen of group 2. Conclusions Professionally applied vital tooth bleaching with a 38% H 2 O 2 gel with or without activation by a halogen light source did not cause damage to the pulp tissue of sound human premolar teeth.
Nonvital Tooth Bleaching: A Review of the Literature and Clinical Procedures
Journal of Endodontics, 2008
Tooth discoloration varies in etiology, appearance, localization, severity, and adhesion to tooth structure. It can be defined as being extrinsic or intrinsic on the basis of localization and etiology. In this review of the literature, various causes of tooth discoloration, different bleaching materials, and their applications to endodontically treated teeth have been described. In the walking bleach technique the root filling should be completed first, and a cervical seal must be established. The bleaching agent should be changed every 3-7 days. The thermocatalytic technique involves placement of a bleaching agent in the pulp chamber followed by heat application. At the end of each visit the bleaching agent is left in the tooth so that it can function as a walking bleach until the next visit. External bleaching of endodontically treated teeth with an in-office technique requires a high concentration gel. It might be a supplement to the walking bleach technique, if the results are not satisfactory after 3-4 visits. These treatments require a bonded temporary filling or a bonded resin composite to seal the access cavity. There is a deficiency of evidence-based science in the literature that addresses the prognosis of bleached nonvital teeth. Therefore, it is important to always be aware of the possible complications and risks that are associated with the different bleaching techniques. (J Endod 2008; 34:394 -407)
2008 Plotino - Nonvital Tooth Bleaching: A Review of the Literature and Clinical Procedures
Tooth discoloration varies in etiology, appearance, localization, severity, and adhesion to tooth structure. It can be defined as being extrinsic or intrinsic on the basis of localization and etiology. In this review of the literature, various causes of tooth discoloration, different bleaching materials, and their applications to endodontically treated teeth have been described. In the walking bleach technique the root filling should be completed first, and a cervical seal must be established. The bleaching agent should be changed every 3-7 days. The thermocatalytic technique involves placement of a bleaching agent in the pulp chamber followed by heat application. At the end of each visit the bleaching agent is left in the tooth so that it can function as a walking bleach until the next visit. External bleaching of endodontically treated teeth with an in-office technique requires a high concentration gel. It might be a supplement to the walking bleach technique, if the results are not satisfactory after 3-4 visits. These treatments require a bonded temporary filling or a bonded resin composite to seal the access cavity. There is a deficiency of evidence-based science in the literature that addresses the prognosis of bleached nonvital teeth. Therefore, it is important to always be aware of the possible complications and risks that are associated with the different bleaching techniques. (J Endod 2008; 34:394 -407)
2021
The discoloration of permanent teeth has a significant aesthetic and social impact. Treatment options for discolored non-vital teeth are restoration, bleaching, crowns, laminate and veneers. However, the method for preparation of crown or veneer has a significant disadvantage as an invasive technique. The intervention should include minimal damage to the tooth structure and should not affect future restoration options. Compared with dental crowns, the advantage of bleaching is that it provides a simple conservative method that can remove stains and whiten discolored teeth without destroying the tooth structure. This article presents a case report of combined (internal and external) bleaching techniques for non-vital discolored teeth, which can be considered as a clinically effective method that is beneficial to patients and clinicians. It needs a periodic evaluation to obtain good functionality and