View clinical trials related to Tooth, Nonvital.
Filter by:In fixed prosthodontic treatment, deflection of gingival tissues for diagnosis or making an impression is one of the important phases. Gingival displacement is defined as "displacement of gingival tissues both in vertical and lateral dimensions". Lateral retraction displaces the tissues so that an adequate bulk of impression material can be interfaced with the prepared tooth. Vertical retraction exposes the uncut portion of the tooth apical to the finish line Conventional gingival retraction cord technique may injure the healthy epithelial lining and result in postoperative gingival recession The diode laser has been used for displacing gingiva to make a deļ¬nitive impression. Rather than displacing gingival tissue, it removes the epithelial lining from the sulcus. The aim of the Study is to compare between the Ultrapak retraction cord and diode laser regarding the amount of vertical and lateral retraction and patient comfort.
Objective: The objective of this study will be to evaluate the effectiveness of different endodontic treatment techniques in postoperative symptoms, apical repair, longevity of rehabilitations, and oral health-related quality of life. Methods: This prospective, randomized, double-blind clinical study was approved at the Research Ethics Committee (nº 2.353.996) and will consist of a sample of 350 patients who will be attended in the clinics of the Federal University of Fluminense/Institute of Health of Nova Friburgo (UFF/ISNF), in which they will be selected based on eligibility criteria. Patients aged up to 18 years, with teeth with necrotic pulps and radiographic evidence of periapical lesion will be included. These patients will be randomly divided into 8 groups: I (35 patients): unirradicular teeth will be submitted to endodontic treatment with foraminal enlargement, instrumentation with reciprocating rotation, sodium hypochlorite as irrigant, lateral condensation filling with MTA Fillapex; II (35 patients): unirradicular teeth will be submitted to endodontic treatment with foraminal enlargement, instrumentation with reciprocating rotation, sodium hypochlorite as irrigant, photobiomodulation (aPDT and LLLT), lateral condensation filling with MTA Fillapex; III (35 patients): unirradicular teeth will be submitted to endodontic treatment with foraminal enlargement, instrumentation with reciprocating rotation, chlorhexidine as irrigant, lateral condensation filling with MTA fillapex; IV (35 patients): unirradicular teeth will be submitted to endodontic treatment with foraminal enlargement, instrumentation with reciprocating rotation, sodium hypochlorite as irrigant, lateral condensation filling with AH Plus; V (35 patients): unirradicular teeth will be submitted to endodontic treatment with foraminal enlargement, instrumentation with reciprocating rotation, sodium hypochlorite as irrigant, cryotherapy with saline solution, lateral condensation filling with MTA Fillapex; VI (35 patients): unirradicular teeth will be submitted to endodontic treatment with foraminal enlargement, instrumentation with reciprocating rotation, sodium hypochlorite as irrigant, cryotherapy with saline solution, lateral condensation filling with AH Plus; VII (35 patients): unirradicular teeth will be submitted to endodontic treatment with foraminal enlargement, instrumentation with reciprocating rotation, sodium hypochlorite as irrigant, ozone therapy, lateral condensation filling with MTA Fillapex; VIII (35 patients): unirradicular teeth will be submitted to endodontic treatment with foraminal enlargement, instrumentation with reciprocating rotation, sodium hypochlorite as irrigant, ozone therapy, lateral condensation filling with AH Plus; IX (35 patients): molars will be submitted to endodontic treatment with foraminal enlargement, instrumentation with reciprocating rotation, conventional irrigation with sodium hypochlorite, lateral condensation filling with MTA fillapex; X (35 patients): molars will be submitted to endodontic treatment with foraminal enlargement, instrumentation with reciprocating rotation, passive ultrasonic irrigation with sodium hypochlorite, lateral condensation filling with MTA fillapex. The analysis of the postoperative symptoms will be performed by the visual analog pain scale at 1th, 2th, 3th, 4th, 5th, 6th, 7th, 14th and 30th days and by the clinical evaluation of edema in 48 and 72 hours. The periapical lesion repair will be evaluated clinically and radiographically at 3, 6, 12, 18 and 24 months. The longevity of rehabilitations will be performed clinically and radiographically for 24 months. In addition, patients will respond a quality of life questionnaire (OHIP-14) on the day of endodontic treatment, on the 7th day and on the 30th day. Data analysis: The data will be inserted into a statistical program (SPSS), obtaining the frequencies of the characterization variables of the sample. The appropriate tests will be used to compare the means of the groups.
- To evaluate and compare the degree of tooth discoloration in tooth crowns induced by Neo MTA versus white MTA over time. - Evaluation of the effectiveness of Neo MTA as coronal plug in revascularization of immature teeth with necrotic pulp.
extrusion of infected dentin into the periapical tissue has been suggested as a major source of pain after endodontic treatment. Although debris extrusion is an inevitable finding even when instrumentation is limited to the confines of the canal, different armamentarium seem to be associated with different amounts of debris extrusion. Studies on the effect of various rotary files on post-endodontic pain are very few and have yielded conflicting results with some favoring full-sequence and others leaning towards reciprocal rotary systems. This study aims at assessing the intensity of post-endodontic pain following two different rotary systems, Reciproc and race. Methods: in this single-blind, parallel-grouped randomized clinical trial a total of 150 otherwise healthy patients aged between 20 to 50 years old with a pulpal status of irreversible pulpitis for one tooth in the upper or lower molar region were analyzed. A clinician performed the endodontic treatment in two groups, a group instrumented using race and a third group with instrumentation performed using Reciproc rotary systems.
Caries disease is still the leading cause of severe tooth decay. Since this can lead to tooth loss, it is important that appropriate treatment is advised to help prevent damage and maintain tooth health. Faced with major coronary destruction, several times it becomes necessary to perform the endodontic treatment, aiming to maintain the element in the buccal cavity for longer. It is known that an excellent restorative treatment with poor endodontic treatment and the inverse has a direct impact on the (in) success of the treatment. In this context, the proper cleaning of the root canals is highlighted, aiming the removal of bacteria and toxins. Acceptable restorations are those that provide adequate reestablishment of anatomy, function, proximal contacts, and occlusal stability. Traditionally, indirect restorations would be indicated in cases of extensive coronary destruction, because it was believed that they would present greater resistance and longevity when compared to direct restorations. However, contemporary dentistry admits that, thanks to adhesive and conservative principles, this difference between direct and indirect procedures in terms of longevity is not significant. The classic restorative procedure in cases of endodontically treated teeth with great loss of coronary structure involves the use of intraradicular retainers, followed by the creation of core and restoration through total crowns. Removal of healthy tissue for the use of posts can weaken the remaining dental structure and increase the risk of root perforations. In this sense, endocrown restorations show superiority when compared to those made with intraradicular retainers. Although the indications are favorable for the use of endocrown restorations, the clinical evidence available on the subject is still scarce. In this double-blind randomized clinical trial, patients who need and meet the inclusion criteria will will be allocated to one of the three restorative groups available, being endocrown restoration in semi-direct composite resin, direct restoration in composite resin retained on the post and ceramic crown retained in the post. Patients will be monitored annually after completion of restorative treatment outcome. In addition to treatment longevity, other secondary outcomes will be evaluated, such as patient satisfaction, impact on quality of life and cost-effectiveness of the proposed treatments.
This study will be a controlled, randomized, parallel group trial where the survival rate of direct and indirect restorations on removable partial denture abutment teeth will be assessed. For this, individuals with widely destroyed teeth and need for endodontic treatment, with at least one remaining dentin wall, adjacent to edentulous spaces in Kennedy Classes I and II will be selected. After the minimum period of one year the teeth will be reassessed through clinical and radiographic examination annually. All patients will receive oral hygiene instructions, caries disease control and endodontic treatment according to the need of each case. Prior to post cementation, patients will receive endodontic treatment through routine techniques that include use of rubber dam, mechanized instrumentation with NaOCl 2%, gutta percha and endodontic cement filling and condensation by the McSpadden technique. The preparation for post space will be done with a specific bur compatible with the diameter of root canal, and the same preparation cast post and cores. The glass-fiber posts (will be cleaned with 70% alcohol and receive silane application. The clinical protocol for direct restoration and confection of the composite resin core will occur in the same way, using the same materials: the dental structure will be etched with 37% phosphoric acid and rinsed, followed by the adhesive system and fabrication of the restoration by incremental technique according to the manufacturer's recommendations. It is important to emphasize that the direct restorative procedure will be carried out in the same consultation of the glass-fiber post cementation. In order to make the cast metal cores, the indirect impression technique will be done with prefabricated pins associated with addition silicone. In this technique, the lightweight material will be inserted into root canal and then, the pin will be introduced into the canal. Next, a prefabricated tray with the heavy and light material will be positioned for removal of the assembly, being removed after the setting time determined by the manufacturer. The mold obtained will be sent to the dental technician for cast post and core fabrication. All posts will be cemented under rubber-dam isolation using self-adhesive resin cement. In teeth where randomization is a metalceramic crown, first the composite resin or metal core will be prepared with a 3216 drill, in order to obtain 1.5mm wear on the proximal and free faces and 2mm on the occlusal surface. The margin design in form of a chamfer, preferably at the gingival level whenever possible. The impression procedure will be carried out using a molding cap and polyether, which will be removed in a tray with irreversible hydrocolloid. A temporary crown will also be made for the patient. The metallic infrastructure will be tested in order to verify its adaptation and transferred in irreversible hydrocolloid molding for later ceramic application. After application of the ceramic, the laying and adaptation of the prosthetic piece will be conferred, being the crown luted with self-adhesive resin cement. Once the restoration / crown of the abutment tooth has been made, the treatment will continue with the preparation of the removable partial denture. The teeth will always be prepared in the mesial proximal area. The delivery of the removable partial denture will be considered the baseline of the study. At this moment, the necessary adjustments and subsequent control of the prosthesis will be made after 24, 72 hours, a week and 15 days in order to check for possible flaws. After 6 months and 1 year of delivery of the removable partial denture, all patients will be recalled for clinical and radiographic evaluation of prostheses / restorations and oral hygiene conditions. This monitoring will be conducted by two evaluators until the end of the trial. All clinical procedures will follow pre-established protocols and the data of each patient and intervention will be recorded in the individual patient file.
1. RATIONALE All-ceramic endocrowns are bonded to the tooth using adhesive resins creating strong bonds to the tooth structure resulting in strengthening effect and reducing the need for post and core. various CAD/CAM materials can be used for the fabrication of endocrowns including lithium-disilicate reinforced glass-ceramics, feldspathic ceramics, in ceram alumina and in ceram spinell as well as hybrid ceramics and composites. Fewer data are available on the clinical performance of the different materials used for endocrowns. With the rapid innovation in the dental restorative materials clinicians are sometimes confused when selecting the best restorative material to restore an endodontically treated tooth with an endocrown. This is due to lack of data with regard to clinical performance of these restorations as well as the degree of patient satisfaction. 2. OBJECTIVES P= Endodontically treated teeth indicated for endocrown I1= Feldspathic endocrown I2= Hybrid endocrown C= IPS e.max Endocrown O= Clinical performance Research question In patients with endodontically treated teeth requiring endocrown restorations, what are the clinical performance and the level of patient satisfaction of cerasmart endocrown versus lithium disilicate (e-max) ceramic endocrowns?
The elimination of pathogenic microorganisms from the root canal system is one of the main points in order to have success in endodontic treatment. The objective of this study is to perform a randomized controlled clinical trial to compare the effectiveness of success in endodontic treatment of primary teeth when combined with photodynamic therapy. Will be selected 30 primary teeth of children aged between 3 and 6 years. The teeth will be divided into two groups: group I control, which will be applied the conventional endodontic treatment and group II to be held endodontic treatment with application of photodynamic therapy. In both groups will be made microbiological evaluations before and after endodontic treatment and clinical and radiographic evaluations will be conducted in the day, 1 month, 3 months and 6 months after treatment comparing the treatment performed in both groups.
There are few randomized controlled trials comparing intraradicular posts used to restore endodontically treated teeth, especially considering cast posts and glass fiber posts. The investigators study will evaluate the clinical success rates of endodontically treated teeth restored with glass fiber posts or cast posts and metal ceramic crown. Individuals included in this study should present any tooth with endodontic treatment and need of intraradicular retention (post) on maxilla or mandible according to inclusion and exclusion criteria. Individuals will be randomly allocated into two groups: (1) endodontically treated teeth restored with fiber post and composite resin core and metal ceramic crown or (2) endodontically treated teeth restored with cast post and core and metal ceramic crown. A sample size calculation will be performed to establish the number of posts needed for comparison. All crowns and posts will be cemented with self-adhesive cement. Individuals will be examined by calibrated examiners, in years 1 to 3. The reason of failure will be categorized as root fracture, fracture of the post, post debonding, clinical and/or radiographical evidence of a gap between restoration and tooth or endodontic failure, tooth extraction, secondary caries, or marginal defects. The confidence level will be set in 95%.