ABSTRACT
PURPOSE: The aims of the present study were to compare the image quality and visibility of tooth cracks between conventional methods and swept-source optical coherence tomography (SS-OCT) and to develop an automatic detection technique for tooth cracks by SS-OCT imaging. METHODS: We evaluated SS-OCT with a near-infrared wavelength centered at 1,310 nm over a spectral bandwidth of 100 nm at a rate of 50 kHz as a new diagnostic tool for the detection of tooth cracks. The reliability of the SS-OCT images was verified by comparing the crack lines with those detected using conventional methods. After performing preprocessing of the obtained SS-OCT images to emphasize cracks, an algorithm was developed and verified to detect tooth cracks automatically. RESULTS: The detection capability of SS-OCT was superior or comparable to that of trans-illumination, which did not discriminate among the cracks according to depth. Other conventional methods for the detection of tooth cracks did not sense initial cracks with a width of less than 100 μm. However, SS-OCT detected cracks of all sizes, ranging from craze lines to split teeth, and the crack lines were automatically detected in images using the Hough transform. CONCLUSIONS: We were able to distinguish structural cracks, craze lines, and split lines in tooth cracks using SS-OCT images, and to automatically detect the position of various cracks in the OCT images. Therefore, the detection capability of SS-OCT images provides a useful diagnostic tool for cracked tooth syndrome.
Subject(s)
Cracked Tooth Syndrome , Image Interpretation, Computer-Assisted , Tomography, Optical Coherence , Tooth Fractures , ToothABSTRACT
The digital workflow in dentistry allows for complete digital processing of the restoration starting with the digital impression using an intraoral scanner to until the fabrication of final reconstruction. Recent advances in 3D printing technologies opened new possibilities also for dental technicians through which wax-up and casting procedures in the laboratories could be eliminated. In this clinical report, a technique is described where the pattern was fabricated using additive manufacturing for pressed lithium disilicate onlay restorations. (AU)
O fluxo de trabalho digital em odontologia permite o processamento digital completo da restauração começando com a impressão digital usando um scanner intraoral até a fabricação da peça final. Os avanços recentes nas tecnologias de impressão 3D abriram novas possibilidades também para os técnicos em prótese dentária através dos quais os procedimentos de cera e fundição nos laboratórios poderiam ser eliminados. Neste relato de caso clínico, descreve-se uma técnica onde o padrão foi fabricado usando a fabricação de aditivos para restaurações do tipo onlay em dissilicato de lítio injetadas. (AU)
Subject(s)
Humans , Male , Adult , Printing, Three-Dimensional , Cracked Tooth Syndrome/diagnostic imaging , Inlays/methodsABSTRACT
A Síndrome do Dente Trincado (SDT) caracteriza-se por uma fratura incompleta do esmalte que pode se estender até a dentina com ou sem comprometimento pulpar. Geralmente não é detectada a olho nu ou através de imagens radiográficas, o que torna o seu diagnóstico difícil para o cirirgião dentista...
Subject(s)
Humans , Male , Female , Cracked Tooth Syndrome/diagnosis , Cracked Tooth Syndrome/therapy , Dental Restoration RepairABSTRACT
<p><b>OBJECTIVE</b>To study the effective method of early treatment on cracked tooth.</p><p><b>METHODS</b>Sixty cracked teeth were randomly divided into Group A and Group B. Teeth of Group A were treated by means of occlusal adjustment and filling. Teeth of Group B were treated by employing porcelain complete veneer crown. Curative effect was evaluated every half a year and last 2 years.</p><p><b>RESULTS</b>The achievement ratio of Group A and Group B was 53.33% and 83.33%. There was significant difference between them (P<0.01).</p><p><b>CONCLUSION</b>Porcelain complete veneer crown is a better method to treat cracked tooth. It can decrease the occurrence of pulpitis and fracture.</p>
Subject(s)
Humans , Cracked Tooth Syndrome , CrownsABSTRACT
Sugere-se nesta oportunidade, uma técnica de tratamento de dentes fraturados, utilizando-se protocolo de adesão dentinária, compósitos e coroa protética, unindo e contendo os fragmentos fraturados. São apresentados quatro casos com acompanhamento por até 20 anos após o tratamento, demonstrando a efetividade terapêutica longitudinal
Subject(s)
Humans , Male , Female , Tooth Fractures , Dentin-Bonding Agents , Dental Restoration, Permanent , Cracked Tooth SyndromeSubject(s)
Dentistry, Operative/methods , Dental Restoration, Permanent/methods , Dentin-Bonding Agents/classification , Anesthesia, Dental/classification , Anesthesia, Dental/methods , Dental Caries/classification , Dental Caries/diagnosis , Dental Caries/physiopathology , Dental Caries/drug therapy , Composite Resins , Dentin Permeability , Dentin Sensitivity , Diagnosis, Oral/methods , Infection Control , Cracked Tooth Syndrome/etiology , Smear LayerABSTRACT
El dolor orofacial (DOF) es un problema común en el población y representa una condición potencialmente deteriorante y debilitante. Un diagnóstico correcto es la base principal para un manejo adecuado; en pacientes con DOF esta tarea puede ser pequeña y simple, o bien convertirse en una experiencia complicada y frustrante para ambos, clínico y pacinetes. Sin embargo, el conocimiento por parte del clínico de todas las posibles condiciones de dolor que pueden afectar la región orofacial facilitará el proceso diagnóstico. Es importante destacar que es muuy difícil diagnosticar algo que no se conoce y aunque "las cosas comunes ocurren comúnmente" no es extraño encontrar pacientes con patologías "raras", de poca ocurrencia, que el clínico ha olvidado o no conoce. El hecho de que el clínico no considere todos estos aspectos durante la evaluación clínica puede llevarlo fácilmente a confundirse, lo que finalmente terminará en un diagnóstico incorrecto, mal manejo clínico y posiblemente consecuencias devastadoras para los pacientes. Esta es una serie de tres artículos que tienen como propósito presentar una revisión de la literatura de las condiciones que se han considerado para establecer el diagnóstico diferencial del dolor orofacial. Los dolores asociados a las estructuras intracraneales (cefaleas por tumores cerebrales), extracraneales (dientes, ojos, senos paranasales, entre otros) y el dolor sicogénico serán discutidos en este primer artículo
Subject(s)
Humans , Diagnosis, Differential , Facial Pain , Brain Neoplasms , Burning Mouth Syndrome , Eye , Facial Pain , Salivary Glands/physiopathology , Headache Disorders , Mouth Mucosa , Lymph Nodes/physiopathology , Pain Measurement , Paranasal Sinuses , Pharynx , Cracked Tooth Syndrome/complications , Cracked Tooth Syndrome/diagnosis , Somatoform Disorders , Tension-Type Headache , Tongue , ToothacheABSTRACT
As fraturas verticais de raiz e rachaduras dentárias representam um desafio à terapia conservadora, especialmente por apresentarem grandes dificuldades de diagnóstico. O presente trabalho aborda aspectos como etiologia, sinais, prevençäo e manejo clínico dessas afeçöes