Dental implant drill holes and the shape of a dental implant superstructure are chosen by creating a computer model giving jawbone structural details, gum surface shape information and proposed teeth or dental prosthesis shape information. The computer model shows the bone structure, gum surface and teeth images properly referenced to one another so that implant drill hole positions can be selected taking into consideration proper positioning within the bone as well as proper positioning with respect to the dental prosthesis. Similarly, manufacture of the dental implant superstructure used for fixed dental prosthesis or overdentures can be designed based on knowledge of the actual implant positions referenced to an image of the gum surface and proposed dental prosthesis.

Manufacturing a dental implant drill guide and a dental implant superstructure

The system is for assisting a surgeon in positioning an article relative to a target position. The system includes a computer for determining a surgical plan, sensors for sensing execution of the surgical plan by the surgeon, an advisor for advising the surgeon based upon comparison of the surgical plan and its execution and, selecting of different types of advise to give the surgeon. The system can also have an input for changing the surgical plan in the computer during surgery.

System for advising a surgeon

Over the past forty years, the technological evolution of ceramics for dental applications has been remarkable, as new materials and processing techniques are steadily being introduced. The improvement in both strength and toughness has made it possible to expand the range of indications to long-span fixed partial prostheses, implant abutments and implants. The present review provides a state of the art of ceramics for dental applications.

https://www.mdpi.com/1996-1944/3/1/351/pdf

Ceramics for Dental Applications: A Review

A computer implemented method includes providing a first set of digital data corresponding to an upper arch image of at least a portion of an upper dental arch of a patient, providing a second set of digital data corresponding to a lower arch image of at least a portion of a lower dental arch of the patient, providing bite alignment data representative of the spatial relationship between the upper dental arch and the lower dental arch of the patient, and aligning the upper and lower arch images relative to one another based on the bite alignment data until an aligned upper and lower arch image is attained The aligned upper and lower arch images are moved towards each other until a first contact point is detected and at least one of the upper and lower arch images is moved relative to the other in one or more directions to a plurality of positions for determining optimal occlusion position of the lower and upper dental arches

Methods for use in dental articulation

A computer-implemented method generates a computer model of one or more teeth by receiving as input a digital data set of meshes representing the teeth; selecting a curved coordinate system with mappings to and from a 3D space; and generating a function in the curved coordinate system to represent each tooth.

Efficient data representation of teeth model

It is possible to produce complete crowns, inlays, and onlays as well as fixed prostheses from various materials through use of computer-aided design and manufacturing. This report from France stresses the clinical application of this system. After a long period of research, computer-aided design and computer-aided manufacturing (CAD-CAM) in dentistry has become clinically applicable. This article U exclusively aimed at the clinical practice of dentistry. Setting aside scientific considerations, the practitioner will learn, through this paper, how the system is used.

CAD-CAM in dentistry

A device for determining mandibular motion wherein three light emitting diodes at the vertices of a triangle are temporarily fixed to teeth of the subject, the light emitting diodes are sequentially energized, and two sensors responsive to the light emitting diodes are mounted on a headpiece applied to the head of the subject and are trained on the light emitting diodes.

Device for measuring and analyzing movements of the human body or of parts thereof

The three-dimensional correlation of images of a human organ, especially dental arcades, uses an impression in the occlusive position, providing a reference in the form of three mutually spaced reference points. Three-dimensional views are taken of the impression and the points and views are also taken with the impression removed. Using the images of the reference points as a basis, the sets of views are then correlated to bring them into a single referential system.

Method of correlating the three-dimensional images of human organs and device for implementation of the method

A method and apparatus for taking impressions of a portion of the body which utilizes the projection of a grid of sinusoidal profile onto the body portion of which the impression is to be taken. The projections are phase-shifted and resulting images are memorized and from the memorized images, the variations in intensity resulting from the phase-shift at each given point can be ascertained to enable the configuration of the region to be calculated.

Process and apparatus for taking a medical cast

Ce procede consiste a apposer ou a reperer sur l'organe ou sur l'environnement de l'organe (3) dont la saisie doit etre effectuee, trois points de reference (6) choisis pour etre tous visibles sur les vues obtenues par les differentes saisies, et a effectuer un calcul de correlation des vues obtenues par les differentes saisies pour les ramener dans un meme referentiel, en tenant compte des trois points de reference. The method includes affixing or spot on the body or on the body environment (3) whose input must be performed, three reference points (6) selected for all visible in the views obtained by the different seizures, and performing a correlation calculation views obtained by the different entries to bring them into a single repository, taking into account the three reference points. Application aux saisies optiques de parties de mâchoires en vue de la realisation de protheses dentaires. Application to Optical seized parts of jaws for the production of dental prostheses.

Jean-Louis Blouin

Papers

CAD-CAM in dentistry

Device for measuring and analyzing movements of the human body or of parts thereof

Method of correlating the three-dimensional images of human organs and device for implementation of the method

Process and apparatus for taking a medical cast

Process of correlation to seize three-dimensional organs and means of execution