Objectives. Tutoplast processed human cadaveric ossicular allografts are a safe alternative for ossicular reconstruction where there is insufficient material suitable for autograft ossiculoplasty. We present a series of 7 consecutive cases showing excellent air-bone gap closure following canal-wall-down mastoidectomy for cholesteatoma and reconstruction of the middle ear using Tutoplast process...

zontal segment and pyramidal segment, but it was small at the vertical segment. In infants, the rate was smaller than in adalts except for part of foramen stylomastoidea. 3. The wall of the facial canal was thinest on the side of tympanic cavity especially at the horizontal and pyramidal segment and thinest portion of the canal wall was 0.1 to 0.3mm thick on an average. On the side of the masto...

Conventional aqueous outflow pathway – Comprised of the trabecular meshwork, the juxtacanalicular connective tissue, the endothelial lining of Schlemm’s canal, Schlemm’s canal itself, the collecting channels, and aqueous veins. Flow resistance – The flow resistance (R=DP/Q) of a tissue is the ratio between the pressure drop across that tissue (DP) and the flow rate generated by that pressure dr...

Down’s syndrome (DS) is the most common aneuploidy diagnosed in liveborn babies ( 1/700 live births). While DS is typically associated with recognizable dysmorphic features, clinical anomalies exhibit variable expressivity. The DS phenotype includes many organ systems and affects all three embryonic germ layers. DS is the most frequent chromosomal cause of mental retardation, is a recognized ge...

PURPOSE To design an instrument to selectively remove trabecular meshwork and Schlemm's canal inner wall (SCIW), and demonstrate its effectiveness by histologic analysis of treated cadaveric human tissue. METHODS The design parameters of the instrument were the ability to permanently remove a segment of trabecular meshwork and Schlemm's canal inner wall without causing damage to surrounding t...

BACKGROUND The relationship between impacted mandibular third molar and mandibular canal is important for removal of this tooth. Panoramic radiography is one of the commonly used diagnostic tools for evaluating the relationship of these two structures. OBJECTIVES To evaluate the accuracy of panoramic radiographic findings in predicting direct contact between mandibular canal and impacted thir...

UNLABELLED The search for new instruments to promote an appropriate cervical preparation has led to the development of new rotary instruments such as TripleGates. However, to the best of the authors' knowledge, there is no study evaluating TripleGates effect on the "risk zone" of mandibular molars. OBJECTIVES The aim of this study was to evaluate the effects of a crown-down sequence of Gates-...

The cross-sectional canal morphology and minimum widths of buccal and lingual canal walls were studied in 20 mandibular molars with C-shaped roots and canal orifices. The roots were mounted in clear resin blocks and sectioned transversely at 1-mm intervals. A total of 154 cross-sections were evaluated with an image analyzer. Twelve different longitudinal canal configurations were identified. Th...