Asunto(s)
Apicectomía/efectos adversos , Filtración Dental/etiología , Obturación Retrógrada/efectos adversos , Preparación del Conducto Radicular/instrumentación , Terapia por Ultrasonido/efectos adversos , Distribución de Chi-Cuadrado , Fracaso de la Restauración Dental , Recubrimientos Dentinarios , Humanos , Funciones de Verosimilitud , Diente Molar , Distribución Aleatoria , Retratamiento , Materiales de Obturación del Conducto Radicular , Preparación del Conducto Radicular/efectos adversos , Estadística como Asunto , Diente no VitalRESUMEN
Sixty-one maxillary central incisors were collected, cleaned, and divided into six groups of 10 teeth, with one tooth as a control. Half of the teeth were resected with a high-speed bur and half with a slow-speed bur, and prepared for retrofillings. Retrofillings of EBA cement and Ketac cement were placed in 10 teeth, each of the high-speed and slow-speed groups. Similarly++, zinc containing amalgam was placed in 10 teeth of the high-speed group, and zinc-free amalgam was placed in 10 teeth in the slow-speed group. A single operator completed all retrofills. They were stored in physiological saline for 10 yr. After that period, the apical portions were photographed at X 30 magnification and evaluated by the authors for marginal discrepancies, root crazing, staining, voids, and roughness. Overall, EBA cement++ and amalgam rated better than Ketac cement in every category except root crazing. Perhaps, as some studies have suggested, EBA cement may replace amalgam as the retrofill material of choice.
Asunto(s)
Adaptación Marginal Dental , Obturación Retrógrada , Materiales de Obturación del Conducto Radicular , Óxido de Aluminio/química , Aleaciones Dentales/química , Amalgama Dental/química , Almacenaje de Medicamentos , Estudios de Evaluación como Asunto , Cementos de Ionómero Vítreo/química , Humanos , Ensayo de Materiales , Variaciones Dependientes del Observador , Materiales de Obturación del Conducto Radicular/química , Propiedades de Superficie , Factores de Tiempo , Zinc/análisisRESUMEN
The authors describe the case of a patient who had tenderness when biting and mild sensitivity to palpation as well as a radiopaque lesion attached to the mesial root of a mandibular first molar. Evidence pointed to a benign cementoblastoma. The dentist redid the original endodontic treatment and surgically removed the lesion, leaving the involved tooth intact. The authors suggest that in certain cases, it may be possible to remove benign cementoblastomas affecting molars without extracting the involved teeth.
Asunto(s)
Neoplasias Mandibulares/cirugía , Tumores Odontogénicos/cirugía , Adolescente , Humanos , Masculino , Diente Molar , Reoperación , Tratamiento del Conducto RadicularRESUMEN
Variations in the morphology of roots and root canal systems create challenges which the dental practitioner must be able to recognize. Endodontic therapy is predictable and successful only to the extent that the root canal system can be debrided, disinfected and sealed against future contamination. In order to accomplish these goals it is necessary to become familiar with the variability of the system we seek to treat.
Asunto(s)
Diente Premolar/anomalías , Cavidad Pulpar/anomalías , Diente Molar/anomalías , Tratamiento del Conducto Radicular/métodos , Diente Premolar/diagnóstico por imagen , Cavidad Pulpar/diagnóstico por imagen , Humanos , Mandíbula , Maxilar , Diente Molar/diagnóstico por imagen , RadiografíaRESUMEN
Endodontic treatment of maxillary and mandibular anteriors does not generally offer strenuous challenges to the skilled practitioner. Most cases are relatively straightforward and can be treated without complication. Anatomical and developmental variations do exist in these teeth, however, which can add an enormous degree of technical complexity, and even doom endodontic treatment to failure. The prudent clinician must be aware of these variations, modify treatment procedures accordingly, and inform the patient of these possible causes of treatment failure.
Asunto(s)
Diente Canino/anomalías , Incisivo/anomalías , Tratamiento del Conducto Radicular/métodos , Diente Canino/diagnóstico por imagen , Diente Canino/crecimiento & desarrollo , Dens in Dente/diagnóstico por imagen , Dens in Dente/terapia , Dientes Fusionados/diagnóstico por imagen , Dientes Fusionados/terapia , Humanos , Incisivo/diagnóstico por imagen , Incisivo/crecimiento & desarrollo , Mandíbula , Maxilar , RadiografíaRESUMEN
Proper management of permanent incisors with horizontal root fractures includes careful diagnosis, continued re-evaluation and a conservative treatment approach. The location of the root fracture and pulpal vitality status both play important roles in proper treatment decisions. A thorough examination, judicious treatment and follow-up on the part of both dentist and patient can result in long term retention of many of these traumatized teeth.
Asunto(s)
Dentición Permanente , Incisivo/lesiones , Fracturas de los Dientes/terapia , Raíz del Diente/lesiones , Curación de Fractura , Humanos , Incisivo/diagnóstico por imagen , Ferulas Periodontales , Pulpotomía , Radiografía , Tratamiento del Conducto Radicular/métodos , Fracturas de los Dientes/diagnóstico por imagen , Raíz del Diente/diagnóstico por imagenAsunto(s)
Enfermedades de la Pulpa Dental/etiología , Resorción Radicular/etiología , Avulsión de Diente/complicaciones , Enfermedades de la Pulpa Dental/terapia , Humanos , Pronóstico , Tratamiento del Conducto Radicular , Resorción Radicular/terapia , Avulsión de Diente/diagnóstico , Avulsión de Diente/terapiaRESUMEN
Cleaning and shaping the root canal system is the most tedious and demanding phase of endodontic therapy. Using a predetermined endodontic preparation allows for a routine approach to instrumentation and produces high-quality results with better efficiency. Schilder states, "Inherent in the concept of cleaning and shaping is the fact that each root canal system, like each carious lesion, is different from another and that, within certain prescribed guidelines no two root canal preparations should be exactly alike, anymore than any two intracoronal preparations are exactly alike." The concept of predetermined preparation does not conflict with Schilder's statement, it merely refines prescribed instrumentation guidelines and establishes instrumenting parameters. The goals of endodontic instrumentation are to: (1) instrument with control so that there is enlargement without deviation from the original canal; (2) instrument to a size that is consistent with total mechanical and chemical debridement; (3) debride the root canal system from its coronal orifice to the periodontal ligament, regardless of canal curvature; and (4) create a canal shape that tapers from the coronal orifice to the apical opening. The authors will discuss each endodontic goal as it is accomplished in the predetermined preparation. Techniques for instrumenting to the predetermined sizes are also described.
Asunto(s)
Preparación de la Cavidad Dental/métodos , Tratamiento del Conducto Radicular/métodos , Preparación de la Cavidad Dental/instrumentación , Preparación de la Cavidad Dental/normas , Humanos , Tratamiento del Conducto Radicular/instrumentación , Tratamiento del Conducto Radicular/normasRESUMEN
Oral trauma is a common event. It has been estimated that up to 20% of the United States population has sustained injuries to the teeth. In a perspective study, Andreasen reported that one of every two Danish children had sustained an oral injury by age 14. This article will discuss the different types of injuries that can happen to permanent teeth, endodontic management of these injuries, and possible complications. Exarticulations (totally avulsed teeth) will not be thoroughly discussed.
Asunto(s)
Tratamiento del Conducto Radicular , Fracturas de los Dientes/terapia , Traumatismos de los Dientes , Hidróxido de Calcio , Exposición de la Pulpa Dental , Humanos , Avulsión de Diente/terapia , Raíz del Diente/lesionesRESUMEN
The authors provide a pictorial review of technical errors in endodontic instrumentation. Examples of separated instruments, abrupt constriction, laceration, canal transportation, and control zone errors are provided. The potential problems and effect on prognosis associated with these errors are explained.
Asunto(s)
Tratamiento del Conducto Radicular/efectos adversos , Tratamiento del Conducto Radicular/instrumentación , Instrumentos Dentales/efectos adversos , HumanosRESUMEN
Apical closure of nonvital teeth can be achieved by appropriate endodontic intervention. A case is reported in which apical maturation appears to have occurred without treatment and in the presence of sporadic drainage from a sinus tract stoma.