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Class 433 - Dentistry

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229 Subclasses


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Definition

This class is a specific class under the broader class of Surgery and includes methods directed to or including specific dental steps, e.g., taking impressions of the teeth or gums, adapting a plate or model to a particular mouth formation, mounting teeth on a plate in a particular way, etc.; apparatus, implements, and devices relating to the treatment of teeth or gums, or the replacement of teeth.

Lines with other classes and within this class

APPARATUS

Inasmuch as this class is defined in terms of specific rather than proximate function, many of the apparatus provided for in this class are also provided for broadly in the proximate function classes. Unless otherwise stated, patents claiming such apparatus should be classified as follows: patents with claims reciting structure peculiar to dentistry should be placed as originals in Class 433. Use of the functional adjective "dental" will not in itself cause placement in Class 433. For example, "a dental mirror comprising...", without further peculiar dental structure recited is classified broadly with mirrors in Class 359, Optics: Systems (Including Communication) and Elements (subclass 882 for a mirror with a handle). However, the recitation of means to prevent fogging or accumulation of water from a drill dictates classification in Class 433. Use of nouns peculiar to dentistry such as "a dental handpiece..." or "an articulator comprising...", will cause classification in Class 433. Apparatus and implements classified in Class 433 are generally those of the type used by a dentist. However, Class 433 will take a device which is disclosed as being used by individuals upon their own teeth, if not provided for elsewhere.

METHODS

Methods including steps normally performed by a dentist are classified in Class 433. Methods for making prostheses and appliances and which contain only those steps which are performed by a technician (e.g., molding, die shaping, etc.) are classified in the appropriate manufacturing class. Methods of treating a tooth by application of a named composition are classified in Class 433 if more than the mere application to a tooth is claimed (e.g., an additional step of drilling, cleaning, filling, etc.).

PROSTHESES OR APPLIANCES

Class 433 will take claims to a dental prosthesis or appliance, per se, unless claimed in terms of a particular composition or material and no structural limitations are recited. Patents including a claim to a composition, per se, are classified in the appropriate composition class.

 
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