Aims Mechanical testing has been performed to evaluate the bond strength of root canal fillings to dentin surface of root canal. In this scenario, the push-out testing is widely used, although the results from several studies are sometimes inconsistent (1-4). The variability of specimen’s geometry and thickness; and diameters of tip applying the load are some factors that can to alter the stres...

Study Design Retrospective case series. Objectives The kinematics of the cervical spine has been investigated by many researchers. However, the occupancy of the disk bulges, spinal cord, ligamentum flavum, and the rest of the canal as well as the changes of these structures with motion have not yet been investigated. The goal of this study is to investigate these dynamic changes. Methods The ki...

Two hundred and two operations on patients with a congenital ear malformation are presented. Special emphasis is placed on those patients seen in the past three years. The goal of surgery is normal, or near normal, hearing in the operated ear. The surgical approach is direct to the middle ear, and the mastoid air cell system is not opened. Temporalis fascia is used for the new tympanic membrane...

were seen at the London Chest Hospital from 1964 to 1969. The primary sites were the large intestine (8), opposite lung (4), cervix (3), stomach, oesophagus, pancreas, and larynx (2 each) and anal canal and kidney (1 each). The size of the cavities ranged from I10 to 6-0 cm., and their wall thickness from 0 3 to 2 5 cm. Only in three cases was there an identifiable communication with the bronch...

The aim of this work was to measure the danger zone in mandibular molars, relating to strip perforations that might affect the mesial root during canal instrumentation. One hundred mesial roots were sectioned 2mm below the furcation and the distal concavities were measured with a microscope from the border of the canals to the outer dentin of the root. The average thickness of the danger zone o...

PURPOSE. Retinal nerve fiber layer (RNFL) thickness measured by optical coherence tomography (OCT) can be unreliable in the presence of a myopic tilted disc. The purpose of this study was to investigate the influence of the calculation circle location of spectral domain (SD)-OCT when measuring RNFL thickness in healthy subjects with myopic tilted disc. METHODS. Sixty-nine eyes with myopic tilte...

OBJECTIVES The aims of this study were to conduct a morphometric analysis on the buccal furcation grooves in freshly extracted bifurcated maxillary first premolars (MFPs) and to correlate all anatomical measurements using microcomputed tomography. MATERIALS AND METHODS Twenty-three human MFPs with bifurcated canals were selected for this study. The specimens were analyzed with microcomputed t...

The purpose of this study was to evaluate hardness (indicator for polymerization) and thickness of two types of resin cement at coronal, middle and apical level of tooth root canal. Ten extracted maxillary incisors were instrumented and post space was prepared for cementation of titanium post. Samples were divided into two groups and each group was cemented either of the two types of resin ceme...

OBJECTIVE To evaluate the effect of implant location and skin thickness on the frequency and degree of adverse skin reactions around the abutment. DESIGN Retrospective multivariate analysis of implant position related to skin thickness and clinical variables. SETTING Tertiary referral center. PATIENTS Random sample of 248 patients with bone-anchored hearing aids. INTERVENTIONS Bone-anch...