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At least 559 records · Page 31Linked to original sources
PubMed1998

[Effect on preparing curved artificial root canal with five handle endodontic instruments II comparision of shaping ability]

OBJECTIVE:To compared the shaping ability of five handle endodontic instruments. METHODS: The canal shape of prepared artificial root canals with five handle endodontic instruments were observed by light-microscope. RESULTS: Apical zips,elbows and perforations were not found. Ledges occurred in speciments of K-Flex group and they were relating to resinous plugs.The apical transportatins were relating to resinous plugs.The apical transportations of K-Flex group and H file group are much greater than other groups. CONCLUSION: Unifile or K file is first choice to prepare curved artificial root canals with routine preparation technique by comprehensive evaluaion of the cutting ability and shaping ability of five handle endodontic instruments.

Journal Article↗
PubMed2002

Changes of pH produced by immersion of endodontic sealers.

When evaluating the antimicrobial effect of endodontic sealers it is important to study the variation of pH, since this is one of the properties that may inhibit the microbial growth and influence biocompatibility. The aim of this study was to evaluate the capacity of several endodontic sealers without calcium hydroxide to modify the pH of the solution in which they were immersed. The sealers used were: Endomethasone C-Septodont (EC), Bio Seal-Ogna (BS), Diaket-Espe (D), Procosol-StarDental (P), AH26-Dentsply (AH), Ketac Endo-Espe (KE), AHPlus-Dentsply (AHP), Endion-Voco (E), Endomethasone-Septodont (EM), EZ Fill-Essential Dental Systems (EZ). Samples of each material were placed in tubes with phosphate saline solution (PBS). The pH was determined at 2, 5, 12, 20, 30, 60, and 90 days. A tube with solution alone was taken as control. Statistical analysis of the results was performed by ANOVA. Material, sample, time and material-time interaction elicited statistically significant differences (p < 0.05). The variation of pH produced by immersion of endodontic sealers depends on the composition of the material.

Analysis of Variance↗
PubMed1992

Surgical management of endodontically treated teeth.

Surgical endodontics has become an important treatment modality in modern dentistry. The evolution and development of this modality has suffered from decades of empiricism, as techniques, concepts, and root-end filling materials were advocated without supporting scientific evidence. The techniques and concepts of periodontal surgery and oral and maxillofacial surgery were long assumed to directly apply to endodontic surgery. Evidence now suggests that certain procedures adopted from other specialties are not indicated for surgical endodontics and, in fact, may be counterproductive. During the past year, the most important developments have emerged in the area of surgical wound healing as it relates to soft tissue management procedures. New techniques and concepts that enhance rapid wound healing and decrease untoward postsurgical sequelae have been proposed.

Animals↗
PubMed2004

Contemporary endodontic surgery.

During the past decade, endodontics has seen a dramatic shift in the application of periradicular surgery and the role it plays in endodontic treatment. With the introduction of enhanced magnification, periradicular ultrasonics and other associative technologies, teeth that might otherwise be extracted now have a chance for retention. This article describes the role of these advances in contemporary endodontic surgery.

Humans↗
PubMed2004

The success of endodontic therapy--healing and functionality.

Current, relevant knowledge on the outcome of endodontic therapy is key to clinical decision making, particularly when endodontic treatment is weighed against tooth extraction and replacement. Inherent to reviewing the outcome is a definition of "success" in relation to the goals of therapy. As the specific goal set out by the individual patient may either be healing/prevention of disease (apical periodontitis) or just functional retention of the tooth, the potential for both healing and functionality is reviewed. Based on selected follow-up studies that offer the best evidence, the chance of teeth without apical periodontitis to remain free of disease after initial treatment or orthograde retreatment is 92 percent to 98 percent. The chance of teeth with apical periodontitis to completely heal after initial treatment or retreatment is 74 percent to 86 percent, and their chance to be functional over time is 91 percent to 97 percent. Thus there does not appear to be a systematic difference in outcome between initial treatment and orthograde retreatment. The outcome of apical surgery is less consistent than that of the nonsurgical treatment. The chance of teeth with apical periodontitis to completely heal after apical surgery is 37 percent to 85 percent, with a weighted average of approximately 70 percent. However, even with the lower chance of complete healing, the chance for the teeth to be functional over time is 86 percent to 92 percent. Considering the favorable outcome, conservative endodontic therapy, both nonsurgical and surgical, is definitely justified and should be attempted when a good restorative and periodontal prognosis is projected, unless the patient is not motivated to retain the tooth.

Follow-Up Studies↗
PubMed1992

Endodontic retreatment.

Endodontic failure is a difficult diagnosis to confirm. Various other pathologic entities that must be ruled out by radiographs and tests have been discussed. Because of significant and, as yet, unresolved problems with surgical endodontic treatment, conservative retreatment should be given priority in treatment planning. Specialized techniques that can be used successfully to remove endodontic posts, gutta-percha silver cones, Thermafil, and paste filling materials from root canals have been discussed as well.

Diagnosis, Differential↗
PubMedDate not supplied

Management of endodontic failures: case selection and treatment modalities.

General dentists should realize that endodontic failures can be retreated successfully, avoiding tooth loss. Retreatment of endodontic failure and initial root canal therapy share similar biologic principles and treatment objectives. The criteria for successful root canal therapy are important factors that must be understood before teeth are retreated. This article demonstrates three retreatment modalities for managing endodontic failures as an alternative to tooth extraction.

Dental Restoration Failure↗
PubMed2005

Management of periodontitis associated with endodontically involved teeth: a case series.

The pulp and the periodontal attachment are the two components that enable a tooth to function in the oral cavity. Lesions of the periodontal ligament and adjacent alveolar bone may originate from infections of the periodontium or tissues of the dental pulp. The simultaneous existence of pulpal problems and inflammatory periodontal disease can complicate diagnosis and treatment planning. The function of the tooth is severely compromised when either one of these is involved in the disease process. Treatment of disease conditions involving both of these structures can be challenging and frequently requires combining both endodontic and periodontal treatment procedures. This article presents cases of periodontitis associated with endodontic lesions managed by both endodontic and periodontal therapy.

Adolescent↗
PubMed2005

Clinical evaluation of antibiotic prophylaxis before endodontic treatment of necrotic teeth.

AIM: The efficacy of antibiotic prophylaxis before endodontic treatment of necrotic teeth in the prevention of post-treatment flare-up pain and swelling was evaluated. METHODS: A total of 47 teeth with diagnosis of pulpal necrosis were selected in 39 patients, independently from the pre-operative symptomatology (painful or asymptomatic). Teeth were randomly divided into 2 groups. The first group (n=23) was given an antibiotic prophylaxis with 2 g amoxicillin 1 h before every appointment; the second group (n=24) did not receive any treatment (control group). The endodontic therapy was performed by shaping canals using the crown-down technique with hand devices, 5% sodium hypochlorite irrigations and 2 intermediate medications with Ca(OH)(2). Obturation was performed using randomly the vertical obturation technique or the no-stop wave technique. At the end of each appointment a questionnaire was given to each patient. The patient had to indicate if pain (absent, light, mild, severe) or swelling were present at 4, 8, 12, 24 h after every appointment. Data were statistically analysed with the Mann-Whitney, Wilcoxon and chi2 test. RESULTS: Only a case of flare-up pain and swelling was found in a patient of the study group. The statistical analysis showed that there were no significant differences between the 2 groups. CONCLUSIONS: An accurate endodontic treatment of necrotic canals is sufficient to guarantee an adequate control of post-treatment pain, with no need of antibiotic prophylaxis.

Adult↗
PubMed2005

Fiber optic fluorescence microprobe for endodontic diagnosis.

Successful endodontic therapy requires total debridement as well as complete obturation of the root canal to the cemento-dentinal junction. The goal of this study was to investigate the feasibility of using quantitative fluorescence spectroscopy for the detection and localization of pathological dentin, pulpal remnants, and microorganisms within the root canal. Specific aims were to identify: 1) characteristic excitation/emission spectra for healthy dentin, decayed dentin, enamel, and pulp; 2) the potential of specific spectral data for differentiating between these tissues; and 3) the potential of spectral data for detecting the presence and identifying four common endodontic pathogens. Fluorescence spectra were determined in the tissues of permanent human teeth, extirpated healthy and necrotic pulps, and four endodontic pathogens. Excitation/emission spectra were collected at 366 nm, 405 nm, and 440 nm excitation. Marked differences in spectral signatures between the different tissues under investigation were observed. We postulate that the differences in fluorescence spectra of decayed vs. healthy dentin are due to the loss of mineralized tissue components and increased organic presence and water in these tissues. Pulpal tissue showed distinctly different fluorescence spectra from healthy and decayed dentin, providing a basis for differentiating between tissue categories. Each bacterial species demonstrated distinct spectral emission patterns.

Dental Caries↗
PubMed2005

[Persistant complaints after endodontic treatment].

A 51-year-old man was referred to an oral and maxillofacial surgeon because of persistent complaints after endodontic treatment of tooth 22. Apical endodontic surgery was performed and periapical tissue was examined histopathologically, showing an osteosarcoma. In retrospect, signs of malignancy were already present on the radiograph taken prior to the endodontic treatment.

Bone Neoplasms↗
PubMedDate not supplied

Clinical evaluation of the use of fiber posts and direct resin restorations for endodontically treated teeth.

PURPOSE: Restoration of root-treated teeth is routinely performed in clinical practice with a choice of therapeutic options, considering many factors to provide optimal mechanical properties, esthetics, and longevity. The aim of the present work was to present a preliminary clinical report on the use of fiber posts and direct resin composites for restoring root-treated teeth. MATERIALS AND METHODS: Thirty-eight anterior and 62 posterior endodontically treated teeth were selected from 3 private prosthodontic offices. The protocol used included endodontic treatment, with translucent fiber posts (DT post) bonded to the post-space using a '1-bottle' adhesive (One-Step, Bisco) and a dual-cure resin cement (DuoLink, Bisco). Direct resin restorations were performed using a micro-hybrid resin composite (Gradia Direct, GC) and a layering technique. Both opaque dentin and enamel and translucent enamel shades were used. RESULTS: Patients were recalled after 6, 12, 24, and 30 months, and the restorations assessed according to predetermined clinical and radiographic criteria. These clinician-mediated evaluation methods confirmed the good clinical performance of the restorations. CONCLUSION: Restoration of endodontically treated teeth with fiber posts and direct resin composites is a treatment option, that in the short term conserves remaining tooth structure and results in good patient compliance.

Adolescent↗
PubMed2005

[Prevalence of endodontic yeasts in periapical infections].

In literature, microbiology results of periapical lesions are limited. Only several types are frequently isolated in rebellious cases. These ones include Enterococcus Faecalis and Enterococcus gram. Recently, a gain of interest is focused on discussion concerning endodontic yeasts that is why we developed our research in this way. From the 81 cases of endodontic culture studied, 20% were positive isolating Candida in which 14% weren't C. albicans, for the rest we identify C. glabrata, C.sp., C. kefyr, C. kruseii. The predominance of Candida albicans was justified by their frequency as commensal oral flora, explaining someway the failure of some intracanal endodontic medication.

Adolescent↗
PubMed2005

[Endodontically treated teeth: use of adhesive core build-up procedures].

Endodontically treated teeth can be restored in several ways. The prognosis of these teeth does not only depend on an adequate endodontic treatment, but also on a solid restoration that protects the weakened tooth against fracture. Adhesive core build-up procedures, possibly with the application of new generation glass fibre posts, become more and more in favour. This article is dealing with the considerations that should be made when adhesive core build-up procedures are used and more specific with core build-up procedures for endodontically treated premolars.

Bicuspid↗
PubMed2006

Retrospective clinical and radiologic evaluation of nonsurgical endodontic treatment in human immunodeficiency virus (HIV) infection.

PURPOSE: This retrospective study evaluated the clinical and radiographic status of nonsurgical endodontic treatment (ET) of anterior and posterior teeth in HIV-seropositive patients. METHODS: ET was analyzed in 26 anterior and 34 posterior teeth from 54 consecutive HIV patients (gender ratio 3 Male : 1 Female, mean age 40.2 years, mean CD4 240, CD4<500 in 88%, 12 with AIDS) over a six year period with a minimum of six months follow-up. ET was evaluated as successful, questionable, or failure based upon clinical factors (palpation, mobility, sinus tract, percussion, function, infection/swelling, occlusion, symptoms) and radiographic factors (periodontal ligament space, rarefaction, lamina dura, root resorption, obturation) during post-treatment examinations with a mean follow up of 26 months. RESULTS: Clinical evaluation at follow up found ET outcome was successful in 88%, questionable in 10% (tenderness with percussion, mobility, widened ligament), and a failure in 2% (developed lesion after ET). Periapical lesions were present in 37% of cases (mean lesion size 6.2 mm). Following ET, mean lesion size (1.8 mm) had decreased by 71%. Obturation was evaluated as optimal or acceptable in 68%. Radiographic evaluation was considered successful in 80%, no change in 15%, and a failure in 5%. CONCLUSIONS: Despite obturation deficiencies and the immunocompromised state of the patients, endodontic therapy has a relatively high degree of success in the majority of HIV/AIDS patients. HIV infection and AIDS should not be considered as a contraindication to endodontic therapy in this patient population.

Adult↗
PubMed2006

Clinical evaluation of posterior composite restorations in endodontically treated teeth.

OBJECTIVE: The purpose of this study was to evaluate the two year clinical performance of posterior composite restorations in endodontically treated premolars and molars using a hybrid composite (Filtek Z-250, 3M ESPE) and a total etch bonding system (Single Bond, 3M ESPE). METHOD AND MATERIALS: Thirty-nine class II restorations in endodontically treated premolars (n=11) and molars (n=28) of 27 patients (14 female, 13 male, mean age 36.51) in 16 maxillar and 23 mandibular teeth were placed by one operator. Restorations were evaluated by two experienced investigators at baseline, 12 months, and 24 months according to the modified United States Public Health Service (USPHS) criteria that included retention, color match, marginal discoloration, secondary caries, anatomic form, marginal adaptation, and surface texture. All restorations were able to be evaluated at baseline, 12 months, and 24 months. RESULTS: Paired samples t-test showed only marginal discoloration showed a statistically significant difference (p<0.05) at the end of 24 months, and no other significant differences were observed for the other variables examined over the duration of the study. None of the restored teeth showed periapical pathology at the end of 24 months. CONCLUSION: At two years, limited deterioration in marginal discoloration was detected. The clinical performance of posterior composite restorations in endodontically treated teeth using Filtek Z250 was found clinically acceptable after two years.

Adult↗
PubMed2006

Endodontic diagnosis: clinical aspects.

The objectives of this article are to review classic and current concepts on endodontic diagnosis, to describe the current classification of the pulp and periradicular diseases and to present and discuss the diagnostic tools available for endodontic diagnosis. The "SOAP" approach to endodontic diagnosis is a very efficient and simple method to accomplish accurate diagnosis. SOAP serves as a mnemonic to guide the clinician in data collection and stands for: Subjective, Objective, Assessment, and Plan.

Dental Pulp↗
PubMed2006

[Vertical root fractures in endodontically treated teeth--Part II: Etiology and prevention].

The etiologic factors for vertical fractures in endodontically treated teeth are predisposing factors, such as loss of tooth material, anatomy of the susceptible teeth, moisture loss, previous dentinal cracks, and loss of bone support; and iatrogenic factors, such as excessive removal of radicular dentin as a result of endodontic and prosthetic procedures and improper selection of dowels. Identification of susceptible teeth and roots, proper selection and cementation of dowels, and avoidance of excessive force during condensation of gutta percha and in removal of tooth structure during endodontic and prosthetic procedures, are all measures that can be taken to prevent root fractures.

Dental Restoration Failure↗