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ÐThis paper makes two contributions to the problem of needle-map recovery using shape-from-shading. First, we provide a geometric update procedure which allows the image irradiance equation to be satisfied as a hard constraint. This not only improves the data closeness of the recovered needle-map, but also removes the necessity for extensive parameter(More)
This article concerns the problem of nerve damage associated with implant placement in the posterior mandible. The causes are discussed, with particular emphasis on intrusion of the drill or implant into the nerve canal. Recommendations are made to help the practitioner avoid this too-common complication.
A range of treatment options has been presented regarding the use of dental implants to rehabilitate patients who otherwise have compromised function using conventional tissue-borne prostheses. This patient population offers significant challenges to both the surgeon and the prosthodontist. Generally speaking, IODs retained on two or more endosteal(More)
PURPOSE The aim of this report was to evaluate the outcome and complications of the treatment of numerous patients with mucoceles of lower lip by means of CO(2) laser vaporization. MATERIALS AND METHODS This study included 82 patients with biopsy-confirmed mucocele of the lower lip who were treated with CO(2) laser vaporization from January 1999 to(More)
The Le Fort I maxillary osteotomy so commonly performed today for a variety of reasons had its primitive beginnings in 1867 in the search for a more simple, direct, and less mutilating approach to the nasal cavity for tumor removal. David Cheever, firstly by his successfully repeated downfracture of the right hemimaxilla in one patient, who had complete(More)
ÐThis paper investigates whether surface topography information extracted from intensity images using a recently reported shape-from-shading (SFS) algorithm can be used for the purposes of 3D object recognition. We consider how curvature and shape-index information delivered by this algorithm can be used to recognize objects based on their surface(More)
BACKGROUND Three-dimensional imaging, particularly cone-beam computed tomography (CBCT), has made significant contributions to the planning and placement of implants to replace missing teeth. The accuracy of CBCT data can be used to fabricate a surgical guide that transfers the implant planning information to the surgical site to facilitate implant(More)
This paper reports the application of a recently developed shape-from-shading technique to estimate facial pose. The shape-from-shading algorithm uses a new geometric technique for solving the image irradiance equation together with curvature consistency constraints. Orientation histograms extracted from the the needle-maps delivered by the new(More)