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Biomedical subjects

N F Guichet

Publications and source records attributed to N F Guichet.

18 recordsLinked to original sources
PubMed1993

From function to esthetics: anterior or occlusal compromises to esthetics.

Increased patient expectations together with improved diagnostic, material, and surgical advances have expanded the boundaries of esthetic dentistry. To optimize functional and esthetic success, existing techniques are being enhanced through careful patient selection and management of the occlusion. During the period from 1991 to 1992, several areas relating anterior or occlusal compromises to esthetics have been identified. These include: dental and skeletal malocclusion, periodontal esthetic defects, restorative materials and laboratory techniques, tooth arrangement and maxillomandibular relations, and implant dentistry. This paper reviews some of the literature on these areas during this period.

Dental Occlusion↗
PubMed1979

The Denar system and its application in everyday dentistry.

The Denar System is far more than just a pantograph and a fully adjustable articulator. These are just a small portion of the system. Today and system includes instruments for occlusal treatment, educational programs, protocol for dentist-laboratory relations, and laboratory support. Prior to the Denar System, effective occlusal treatment was available only to a select few and it was rendered with the expenditure of considerable time and expense by those few dentists who, after many years of concentrated effort, developed the required skills and eventually overcome the obstacles to providing this service. Today, the Denar System provides the profession not only with the tools but also with the means to acquire, in a few short months, basic occlusal treatment and management skills that took predecessors many years of concentrated effort to develop. Because of the continuing efforts of many of our colleagues in dental education there is currently an increasing level of awareness of the role of occlusion in modern dental practice. These significant educational activities can now be supported by commercial organizations, such as the Denar Corporation, who possess the resources needed to develop whatever instruments or services are required to enable more dentists to implement principles of occlusion in their treatments on a routine basis and to enable them to do so within the economic framework of a modern dental practice.

Dental Articulators↗
PubMed1977

Biologic laws governing functions of muscles that move the mandible. Part I. Occlusal programming.

Many factors, other than the proprioceptive inputs originating from occlusal contacts of teeth, program jaw position and the functions of the muscles that move the mandible. However, once the mechanism by which specific occlusal contacts program specific muscle functions is clearly understood, it becomes a relatively simple matter to make an accurate diagnosis and select the most direct approach to treatment. This article is Part I of a series presented in four parts on the "Biologic Laws Governing Functions of Muscles That Move the Mandible."

Biology↗
PubMed1977

Biologic laws governing functions of muscles that move the mandible. Part II. Condylar position.

A model to quantify muscle response to occlusal contacts is useful in developing an understanding of the mechanism by which the occlusion programs muscle function. A knowledge of how the occlusion programs muscle function enables the dentist to develop manipulative skills of the mandible which are necessary for diagnosis and effective occlusal treatment. This article presents complicated neuromuscular responses (reflexes) to occlusal contacts in an oversimplified way and with analogies so that the clinical significance of these neuromuscular reflexes in diagnosis and treatment can be more easily understood.

Biomechanical Phenomena↗
PubMed1977

Biologic laws governing functions of muscles that move the mandible. Part III. Speed of closure--manipulation of the mandible.

The character of the occlusal surfaces of teeth programs the functions of muscles that move the mandible and imposes specifications upon the dentist within which he must work in manipulating the patient's mandible. If he exceeds those specifications, protective responses that inhibit his efforts are elicited in the patient's musculature. A knowledge of the laws governing functions of the muscles that move the mandible enables the dentist to acquire mandibular-manipulation skills necessary for diagnosis and effective occlusal treatment. A model in which the dentist visualizes the patient, the patient's protective reflexes, the components of the patient's gnathostomatic system, and himself as four independent personalities participating in the jaw manipulation is a useful tool in acquiring mandibular-manipulation skills. This article is Part III of a series presented in four parts on the "Biologic Laws Governing Functions of Muscles That Move the Mandible."

Biomechanical Phenomena↗
PubMed1977

Biologic laws governing functions of muscles that move the mandible. Part IV. Degree of jaw separation and potential for maximum jaw separation.

Accurate diagnosis and treatment of the gnathostomatic system require an understanding of both its biomechanics and its physiology. Clinically, the treatment consists of modifying the existing occlusal program to relieve stress from distressed tissues. The objective of treatment is to effect a neuromuscular release of the mandible. This may be accomplished by (1) equilibration of the natural occlusion, (2) orthodontics, (3) restorative procedures, or (4) surgery. Most frequently, however, the treatment entails some combination of these procedures. The criteria for success of treatment are not determined by the method or technique employed but by the neuromuscular response that the treatment produces. The purpose of this article is not to suggest which occlusal scheme produces the most favorable muscle response in the gnathostomatic tissues. Neither is an objective of this article to teach the mandible-manipulation techniques that are needed to identify occlusal irritants, perform occlusal equilibrations, or obtain accurate centric relation recores. The objective of this article is to emphasize that there are definite principles by which the muscles respond to occlusal contacts. Occlusal contacts can excite bruxism and the sequelae to bruxism. Knowledge of the laws which govern functions of the muscles that move the mandible enables the dentist to acquire the mandibular-manipulation skills that are necessary for the effective diagnosis and treatment of occlusal conditions.

Biology↗
PubMed1976

Classification of occlusal carvings.

Laboratory fees associated with the use of fully adjustable articulators are for the time and skill the technicians employ in harmonizing the occlusion to condylar paths of movement and are not based on the instrument used. The classification of occlusal carvings presented in this article for alloy and porcelain restorations aids in establishing accurate communications between the dentist and the laboratory. This classification enables the dentist to accurately specify to the technician the amount of time and skill the dentist wants the laboratory to expend (which affects the laboratory fee) to fabricate the prescribed occlusion.

Classification↗