How Well Do You Know Dental Prosthetics?

Dental Prosthetics: Classification, Impressions, Preparation, and Fixed Crowns

• The evaluation of teeth for prosthetics includes factors such as filling to dent pulp relationship, crown:root ratio, periodontium condition, and endo treatment quality.
• The Wild-Voldrich classification divides dent defects based on topography, transmission of masticatory pressure, size and function, and number and type of missing teeth.
• The I class of dent defects indicates restoration with dental, dentomucosal, mucodental, or mucosal transmission of masticatory forces.
• The II class of dent defects indicates restoration with mucosal, dental, mucodental, or dentomucosal transfer.
• The III class of dent defects indicates restoration with mucosal, dental, mucodental, or dentomucosal transfer.
• Alginate is an irreversible hydrocolloid impression material used to make a working impression in fixed prosthetics, mixed in a ratio of 1:1 by adding powder to water, and has good tear resistance.
• Silicones are hydrophilic impression materials with polydimethylsiloxane as the basic component, providing the most detailed impressions, volumetric stability, and can be cast up to 72 hours.
• Impressions in fixed prosthetics can be made with an individual or perforated metal impression tray, using a one-stage or two-stage technique, and an adhesive to prepare the impression tray.
• Impression trays are divided into prefabricated and individual ones, with sizes 1-3 (S-L) for adults, made of metal or plastic, and are universal for dentulous and edentulous upper and lower jaws.
• Pillars of the second class include upper lateral incisors, lower central incisors, upper first premolar, and lower second premolar.
• Basic preparation rules for prosthetics include preparation from frontal area to distal area, use of high-speed handpiece, proper centered and shape-appropriate diamond drills, and as many carbide drills as possible.
• For the preparation of occlusal surface, diamond bur needle, football ball, round bur, or carbide round bur can be used, reducing the occlusal surface by 0.5-2 mm while maintaining the original cusp-like shape. For frontal teeth, they are tilted vestibularly or orally during preparation, shortened by about 1/5 of the crown's length, and respecting the tooth's shape. The use of retraction cord is necessary for supragingival preparation, while full metal crowns require a circular reduction of 1.2-1.5 mm.

Test your knowledge of dental prosthetics with this informative quiz! From classifications and impressions to preparation and fixed crowns, this quiz covers all the essential topics you need to know. Whether you are a dental student, practitioner, or just curious about the subject, this quiz will challenge and expand your understanding of dental prosthetics. So, put your thinking cap on and give it a go!