The deviation correction trajectory of the mechanical vertical drilling system (MVDS) is very important because it final embodiment performance. However, impossible to obtain at design stage, except when using simulation methods. In this paper, tool face angle model and other theoretical models were established, respectively, method was created through coupling. Next, used simulate MVDS under t...

Background To ensure accurate implant placement, surgical guides are used to control the steps of placement surgery. Purpose Evaluation accuracy in long span edentulous area by novice clinicians according fully-guided (FG), pilot-guided (PG), and freehand (FH) protocols. Materials methods Maxillary models with four missing teeth from right first canine molar were produced 3-dimensional printing...

PURPOSE To evaluate the effect of deep lateral wall orbital decompression with intraconal fat debulking on strabismus in thyroid-related orbitopathy (TRO) patients using automated Hess screen (AHS). DESIGN Prospective nonrandomized clinical study. PARTICIPANTS Eleven TRO patients (19 surgeries) operated on at the Jules Stein Eye Institute from January, 2004, through December, 2004. METHOD...

Background: Congenital absence of the superior oblique (SO) is a rare cause of strabismus. It should be suspected in a patient with a presumed diagnosis of SO palsy presenting with amblyopia, an unusually large vertical deviation, and a significant horizontal deviation. Case Report: We report a case of an infant presenting at five months of age with a significant right head tilt since birth and...

purpose: to evaluate the clinical manifestations and surgical results in patients with double elevator palsy operated at labbafinejad eye center from 1993 to 2004. methods: the study was conduct on hospital records of 20 patients with double elevator palsy. patients were classified in three groups including primary elevator muscle palsy (9 subjects), primary supranuclear palsy with secondary in...

OBJECTIVE Computer-guided implant placement is a growing treatment modality in partially and totally edentulous patients, though data about the accuracy of some systems for computer-guided surgery is limited. The purpose of this study was to evaluate the accuracy of a laboratory computer-guided system. STUDY DESIGN A laboratory-based computer guiding system (M Guide; MIS technologies, Shlomi,...