Dental anxiety, cardiovascular changes and patient preconceptions toward implants and root canal treatments: An observational study.

Background: There is little information about dental anxiety and the patient's vital signs during dental procedures. This study evaluates and compare patient anxiety levels and cardiovascular changes before and during root canal treatment (RCT) and single-tooth implant procedures. Material and Methods: Preoperative data and pre-treatment considerations were recorded. HR and SpO2 were monitored during treatment procedures at five points. Data were analyzed accordingly using Mann Whitney or X2 tests. 80 patients met the inclusion criteria. Results: Anxiety and fear scores were strongly correlated (p< 0.001). Both treatments resulted in low levels of dental anxiety and fear. Patients with a prior dental bad experience presented higher anxiety scores in the implant treatment group (p< 0.05). Implant treatment was considered a more time-consuming and more painful procedure than root canal treatment (p< 0.05). No significant relation was found between the level of anxiety with HR and SpO2. Conclusions: No significant relation was found between the level of dental anxiety with HR and SpO2. Single-implant treatment was pre-considered to be a more time-consuming and more painful procedure when compared with a RCT. HR was higher at the initial stages and decreased as both procedures finished. Key words:Dental anxiety, endodontics, dental implants, oximetry, heart rate.

Evaluación del transporte apical producido en molares inferiores instrumentados con el sistema Mtwo / No disponible

Introducción: El objetivo del estudio fue evaluar el transporte apical después de la instrumetnación con sistema Mtwo 40/.04. Material y métodos: Se utilizó la técnica de superposición radiográfica para evaluar el transporte apical producido a 0,5 mm de la longitud de traajo en molares divididos según el ángulo de curvatura. Se usaron los conductos mesiales de 40 molares mandibulares divididos en dos grupos en función del ángulo de curvatura. Grupo A (n=40): ángulos de 0 a 24º y grupo B (n=40): ángulos de 24 a 56º. La prueba de Mann-Whitney se utilizó para las comapraciones por pares. El nivel de significación estadística se fijó en p<0,05. Resultados: La media de transporte apical para el grupo A fue de 0,17±0,04 mm, mientras que el valor para el grupo B fue de 0,19±0,03 mm. No se encontraron diferencias estadísticamente significativas entre los dos grupos. Conclusiones: Bajo las condiciones del estudio no existen diferencias en cuanto a transporte apical entre los distintos tipos de curvatura (AU)

Introduction: The aim of this study was to evaluate the apical transportation after instumetnation with 40/.04 Mtwo system. Methods. We used the overlay technique to assess radiographic apical transport produced 0.5 mm of working length in molars divided by the angle of curvature. We used the mesial canals of 40 mandibular molars divided into two groups depending on the angle of curvature. Group A (m=40): angles form 0 to 24º. Results: Mean apical transportation for group A was 0,17±0,04 mm, while the value for group B was 0,19±0,03 mm. There were no statistically significant differences between the two groups. Conclusions: Under the study conditions there are no differences in apical transport between different types of curvature (AU)

A comparison of apical transportation between FlexMaster and Twisted Files rotary instruments.

INTRODUCTION: The aim of this study was to evaluate apical transportation in root canals after the use of Twisted Files (TF; SybronEndo, Orange, CA) and FlexMaster (VDW, Munich, Germany) #40/04 rotary files. METHODS: A double-digital radiographic technique was used to compare apical transportation between the TF and FlexMaster systems. Each rotary system was used to instrument mesial canals from 80 extracted mandibular molars. The central axes of the file imaged before instrumentation (#15 K-file) and the master apical rotary file (#40/04) were superimposed digitally. AutoCAD 2008 (Autodesk Inc, San Rafael, CA) was used to measure apical transportation at 0.5 mm from the working length (WL). The data were analyzed using the Student's t test, and significance was set at P < .05. RESULTS: The mean amount of apical transportation at 0.5 mm from the WL was 0.17 ± 0.09 mm for the FlexMaster group and 0.19 ± 0.12 mm for the TF group. No statistically significant differences in apical transportation were found between the 2 groups. CONCLUSIONS: Under the conditions of the study, no statistically significant differences in apical transportation were observed between FlexMaster and TF rotary files.

Invasive cervical resorption: report on two cases.

Invasive cervical resorption is a relatively uncommon form of external root resorption that may lead to tooth loss. This article presents the clinical and radiologic diagnoses and treatment modalities of invasive cervical resorption in 2 patients. In the first case, we did a slow orthodontic forced eruption to make the bone grow coronally. After 6 months, the tooth was extracted and an immediate implant was placed. Eight months later a zirconia crown was cemented. In the second case, we performed root canal treatment followed by a composite reconstruction of the defect. These 2 cases illustrate different approaches based on the extent of the defect.