The ablation efficacy of hard dental tissue, in terms of ablated volume per laser energy, is one of the most commonly used parameters for comparing and optimizing Erbium dental lasers. A number of techniques have been applied to measure the ablation of crater volumes. Two of the most common methods use a focusing optical microscope and a laser triangulation technique. The laser triangulation te...

BACKGROUND Osseointegrated endosseous implants are widely used for the rehabilitation of completely and partially edentulous patients, being the final prosthodontic treatment more predictable and the failures extremely infrequent. A case of fracture of an endosseous dental implant, replacing the maxillary first molar, occurring in a middle-age woman, 5 years after placement is reported. MATER...

Stud ies of histopathologic changes in denta l lesions of leprosy patients were reported by Kitami (6), Tochihara and Murakami Cl), Hirashita (~,:I) , T ajiri and Kamio (X), I takura ( .1), Kamio (f.), and Asano (1). Most of the papers of these authors were published during the period before sulfones were used in Japan, On ly the paper of Asano belongs to the later period, when sulfones were em...

This study was designed to explore a new method for the assessment of dental crowding from study models, which would be both valid and reproducible. This was then tested against two previously reported strategies. A single examiner compared the following methods: visual examination, brass wire/callipers, and a reflex microscope with its customized computer program. Sixty study models (30 maxill...

OBJECTIVE The purpose of the study was to examine the substantivity of a new disinfectant against biofilm formation in the dental unit waterlines. MATERIALS AND METHODS Twenty dental units were selected for the study and divided into two groups: Group A (dental unit waterlines treated with the disinfectant) and Group B (untreated dental unit waterlines). Biofilm formation was monitored in bot...

Microscope-based Image-guided Neurosurgery seeks to establish an accurate correlation between preoperative images and the current surgical scene under the microscope through rigid registration. Information, drawn from diagnostic image data, including computerized tomography (CT) and magnetic resonance images (MRIs), can be projected into the operating microscope, overlaying the surgical field i...

INTRODUCTION The aim of this study was to investigate the outcome of root-end surgery. It identifies the effect of the surgical operating microscope or the endoscope on the prognosis of endodontic surgery. The specific outcomes of contemporary root-end surgery techniques with microinstruments but only loupes or no visualization aids (contemporary root-end surgery [CRS]) were compared with endod...