This study evaluated in vitro the effect of using the operating microscope on repairing furcation perforations using Vitrebond or mineral trioxide aggregate. Forty-six human molar teeth were mounted into a jig attached to a simulated jaw. The teeth were allocated randomly to four groups (n = 10). Furcal perforations were made in the teeth using an ISO 012 round bur in a slow-speed hand-piece. E...

The anatomical complexity of the root canal system maxillary molars is considered a challenge to endodontic treatment. aim this study was compare different diagnostic methods for identification MB2: clinical examination (CE), dental operating microscope (DOM), digital periapical radiography (DR), cone-beam computed tomography (CBCT) and cross sections (CS). Sixty-one were randomly selected. Ini...

A case is reported in which an arteriovenous malformation was removed from a portion of the basal ganglion and region of the lenticulostriate arteries. The patient made an excellent recovery. The importance of stereoangiography and the operating microscope are emphasised.

An instrument is described that provides a stable magnified image for ophthalmoscopy and a low power operating microscope combined to allow greatly improved fundal inspection and to eliminate the need to change instruments during detachment surgery.

The operative microscope has been a staple instrument in the neurosurgical operating room over the last 50 years. With advances in optoelectronics, options such as robotically controlled high magnification have become available. Such robotically controlled optoelectronic systems may offer new opportunities in surgical technique and teaching. However, traditionally trained surgeons may find it h...

The increasing use of the binocular operating microscope in ophthalmic surgery has highlighted both the desirability of some form of support for the operating surgeon's arms and the need for better fixation of the patient's head. Arm rests attached to the operating chair (Barraquer and Boberg-Ans, I959) or to the operating table (Pierse, I969) have been described. A more sophisticated mobile ar...

Stem cells are characterized by the ability to differentiate and to self-renew. Stem cells derived from human dental pulp have been shown to differentiate into osteoblasts serving as a potential source of autologous bone produced in vitro. The purpose of the present study was to isolate mesenchymal stem cells from dental pulp. Dental pulp was gently extracted from 27 intact human permanent thir...

We demonstrate compact full-field soft X-ray transmission microscopy with sub 60-nm resolution operating at lambda= 2.48 nm. The microscope is based on a 100-Hz regenerative liquid-nitrogen-jet laser-plasma source in combination with a condenser zone plate and a micro-zone plate objective for high-resolution imaging onto a 2048 x 2048 pixel CCD detector. The sample holder is mounted in a helium...